/* ============================================================
   Kamoliddin Tilonboyev — Portfolio
   Glassmorphism · Dark cyber theme
   ============================================================ */

:root {
  --bg: #070a14;
  --bg-2: #0a0e1a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);

  --text: #eaf0ff;
  --text-dim: #a9b4cf;
  --text-faint: #6c7793;

  --green: #45f0a0;

  /* ---- Accent slots (overridden per theme) ---- default: Ocean ---- */
  --cyan: #22d3ee;   /* accent 1 (primary) */
  --violet: #3b82f6; /* accent 2 */
  --pink: #6366f1;   /* accent 3 */

  /* Derived from the accent slots above */
  --grad: linear-gradient(120deg, var(--cyan) 0%, var(--violet) 55%, var(--pink) 100%);
  --grad-soft: linear-gradient(120deg,
    color-mix(in srgb, var(--cyan) 18%, transparent),
    color-mix(in srgb, var(--violet) 18%, transparent));

  /* Accent colour for TEXT — bright on dark, darkened on light for contrast */
  --ink-accent: var(--cyan);

  --glass-blur: 14px;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.6);

  --maxw: 1120px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

/* ---------- Color themes (switchable) ---------- */
[data-theme="ocean"]  { --cyan: #22d3ee; --violet: #3b82f6; --pink: #6366f1; }
[data-theme="cyber"]  { --cyan: #00e5ff; --violet: #7c5cff; --pink: #ff5cc8; }
[data-theme="matrix"] { --cyan: #45f0a0; --violet: #14b8a6; --pink: #00e5ff; }
[data-theme="sunset"] { --cyan: #ffd166; --violet: #ff8a3d; --pink: #ff5cc8; }

/* ---------- Light mode (data-mode="light") ---------- */
[data-mode="light"] {
  --bg: #eef1f9;
  --bg-2: #e3e8f4;
  --surface: rgba(255, 255, 255, 0.62);
  --surface-2: rgba(255, 255, 255, 0.85);
  --border: rgba(20, 30, 60, 0.12);
  --border-strong: rgba(20, 30, 60, 0.22);
  --text: #131a30;
  --text-dim: #41506e;
  --text-faint: #6b7488;
  --shadow: 0 20px 50px -26px rgba(20, 30, 60, 0.28);
  /* darker, theme-tinted accent so accent text stays readable on light bg */
  --ink-accent: color-mix(in srgb, var(--violet) 70%, #0a0a18);
}
/* darken the gradient's bright start so big gradient text stays legible on light */
[data-mode="light"] .gradient-text,
[data-mode="light"] .stat-num {
  background: linear-gradient(120deg, color-mix(in srgb, var(--cyan) 55%, #0a0a18), var(--violet) 55%, var(--pink));
  -webkit-background-clip: text; background-clip: text;
}
[data-mode="light"] .bg-wrap {
  background:
    radial-gradient(900px 600px at 80% -10%, color-mix(in srgb, var(--violet) 22%, transparent), transparent 60%),
    radial-gradient(800px 500px at 0% 20%, color-mix(in srgb, var(--cyan) 18%, transparent), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}
[data-mode="light"] .bg-grid {
  background-image:
    linear-gradient(rgba(20,30,60,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,30,60,0.05) 1px, transparent 1px);
}
[data-mode="light"] .blob { opacity: 0.3; }
[data-mode="light"] .navbar.scrolled { background: rgba(255, 255, 255, 0.72); }
[data-mode="light"] .nav-links { background: rgba(255, 255, 255, 0.92); }
[data-mode="light"] .admin-header { background: rgba(255, 255, 255, 0.78); }
[data-mode="light"] .btn-primary,
[data-mode="light"] .filter-chip.active,
[data-mode="light"] .lesson-done.is-done .check,
[data-mode="light"] .brand-mark,
[data-mode="light"] .stat-num { color: #07101a; }
[data-mode="light"] ::selection { background: rgba(59, 130, 246, 0.25); color: #07101a; }
/* terminal & nano stay dark — looks right in both modes */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(124, 92, 255, 0.4); color: #fff; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; position: relative; }
@media (max-width: 700px) { .section { padding: 72px 0; } }

/* ---------- Animated background ---------- */
.bg-wrap {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background:
    radial-gradient(900px 600px at 80% -10%, color-mix(in srgb, var(--violet) 20%, transparent), transparent 60%),
    radial-gradient(800px 500px at 0% 20%, color-mix(in srgb, var(--cyan) 14%, transparent), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  transition: background .5s ease;
}
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 75%);
}
.blob {
  position: absolute; border-radius: 50%; filter: blur(64px); opacity: 0.45;
  will-change: transform; transform: translateZ(0);
}
.blob-1 { width: 420px; height: 420px; background: var(--cyan); top: -80px; left: -60px; animation: float1 18s ease-in-out infinite; }
.blob-2 { width: 480px; height: 480px; background: var(--violet); bottom: -120px; right: -80px; animation: float2 22s ease-in-out infinite; }
.blob-3 { width: 320px; height: 320px; background: var(--pink); top: 45%; left: 55%; opacity: 0.3; animation: float3 26s ease-in-out infinite; }
@keyframes float1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(60px,80px)} }
@keyframes float2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-70px,-50px)} }
@keyframes float3 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-40px,40px) scale(1.15)} }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 100%;
  transform: scaleX(0); transform-origin: 0 0; will-change: transform;
  background: var(--grad); z-index: 200; box-shadow: 0 0 12px rgba(0,229,255,0.6);
}

/* ---------- Glass utility ---------- */
.glass {
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s ease, border-color .3s ease, padding .3s ease;
  padding: 18px 0;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(8, 11, 20, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
  background: var(--grad); color: #07101a; font-weight: 700; font-size: 15px;
  box-shadow: 0 6px 20px -6px rgba(0,229,255,0.5);
}
.brand-name { font-size: 18px; letter-spacing: -0.02em; }
.brand-dot { color: var(--ink-accent); }

.nav-links { display: flex; gap: 6px; }
.nav-links a {
  font-size: 14.5px; font-weight: 500; color: var(--text-dim);
  padding: 8px 14px; border-radius: 10px; transition: color .2s, background .2s; position: relative;
}
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: var(--grad); border-radius: 2px;
}

.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang-toggle {
  display: flex; align-items: center; gap: 4px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 7px 12px; font-family: var(--font-mono); font-size: 13px; font-weight: 500;
  color: var(--text-faint); transition: border-color .2s;
}
.lang-toggle:hover { border-color: var(--border-strong); }
.lang-opt { transition: color .2s; }
.lang-opt.active { color: var(--ink-accent); }
.lang-sep { color: var(--text-faint); }

.menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.menu-btn span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }
.menu-btn.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2){ opacity: 0; }
.menu-btn.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 13px 24px; border-radius: 12px; font-weight: 600; font-size: 15px;
  cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; border: 1px solid transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad); color: #06101a; box-shadow: 0 12px 30px -10px rgba(0,229,255,0.5); }
.btn-primary:hover { box-shadow: 0 18px 40px -10px rgba(124,92,255,0.6); }
.btn-ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--border-strong); background: var(--surface-2); }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; padding-top: 80px; }
.hero-inner { display: flex; flex-direction: column; align-items: flex-start; max-width: 860px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px; padding: 8px 16px; border-radius: 999px;
  font-size: 13.5px; color: var(--text-dim); margin-bottom: 28px; font-weight: 500;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 0 0 rgba(69,240,160,0.7); animation: pulse 2s infinite;
}
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(69,240,160,.6)} 70%{box-shadow:0 0 0 8px rgba(69,240,160,0)} 100%{box-shadow:0 0 0 0 rgba(69,240,160,0)} }

.hero-title {
  font-family: var(--font-display); font-weight: 700; line-height: 1.05;
  font-size: clamp(2.4rem, 6vw, 4.6rem); letter-spacing: -0.03em; margin-bottom: 18px;
}
.hero-title span { display: block; }
.gradient-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-role {
  font-family: var(--font-mono); font-size: clamp(1.1rem, 2.6vw, 1.6rem);
  color: var(--text); margin-bottom: 22px; min-height: 1.6em;
}
.role-prefix { color: var(--text-faint); margin-right: 8px; }
.typed { color: var(--ink-accent); font-weight: 500; }
.caret { color: var(--ink-accent); font-weight: 300; animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-desc { font-size: 1.1rem; color: var(--text-dim); max-width: 640px; margin-bottom: 34px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-socials { display: flex; gap: 12px; }
.social-link {
  display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-dim);
  transition: color .2s, transform .2s, border-color .2s;
}
.social-link:hover { color: var(--ink-accent); transform: translateY(-3px); border-color: var(--ink-accent); }

.scroll-hint { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); }
.mouse { display: block; width: 26px; height: 42px; border: 2px solid var(--text-faint); border-radius: 14px; position: relative; }
.wheel { position: absolute; top: 8px; left: 50%; transform: translateX(-50%); width: 4px; height: 8px; background: var(--cyan); border-radius: 2px; animation: wheel 1.8s infinite; }
@keyframes wheel { 0%{opacity:0;transform:translate(-50%,0)} 30%{opacity:1} 100%{opacity:0;transform:translate(-50%,14px)} }

/* ---------- Section heads ---------- */
.section-head { margin-bottom: 52px; }
.section-kicker {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono);
  font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-accent); margin-bottom: 14px;
}
.section-kicker.center { display: flex; justify-content: center; }
.kicker-num { color: var(--text-faint); }
.section-title {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.1; max-width: 16ch;
}
.section-title.center { max-width: none; text-align: center; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; align-items: start; }
.about-text { padding: 34px; }
.about-text p { color: var(--text-dim); margin-bottom: 16px; }
.about-text p:last-child { margin-bottom: 0; }
.about-text strong { color: var(--text); }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-card { padding: 24px 20px; display: flex; flex-direction: column; gap: 6px; transition: transform .25s, border-color .25s; }
.stat-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.stat-num { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.8rem, 4vw, 2.4rem); background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-label { font-size: 13px; color: var(--text-faint); line-height: 1.4; }

/* ---------- Skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.skill-card { padding: 26px; transition: transform .25s, border-color .25s; }
.skill-card:hover { transform: translateY(-5px); border-color: var(--border-strong); }
.skill-icon { font-size: 26px; margin-bottom: 12px; }
.skill-card h3 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span {
  font-size: 12.5px; font-family: var(--font-mono); padding: 5px 11px; border-radius: 8px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim);
}

.lang-bars { margin-top: 30px; padding: 30px 34px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); }
.lang-bars-title { font-family: var(--font-display); margin-bottom: 20px; font-size: 1.15rem; }
.bar-row { margin-bottom: 16px; }
.bar-row:last-child { margin-bottom: 0; }
.bar-label { display: block; font-size: 14px; color: var(--text-dim); margin-bottom: 8px; }
.bar { height: 8px; border-radius: 6px; background: var(--surface-2); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; border-radius: 6px; background: var(--grad); transition: width 1.2s cubic-bezier(.2,.8,.2,1); }
.bar.animate i { width: var(--w); }

/* ---------- Timeline ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--cyan), var(--violet), transparent); }
.tl-item { position: relative; margin-bottom: 26px; }
.tl-item:last-child { margin-bottom: 0; }
.tl-dot { position: absolute; left: -34px; top: 26px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg-2); border: 3px solid var(--cyan); box-shadow: 0 0 0 4px rgba(0,229,255,0.12); }
.tl-card { padding: 26px 28px; transition: transform .25s, border-color .25s; }
.tl-card:hover { transform: translateX(4px); border-color: var(--border-strong); }
.tl-top { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: baseline; margin-bottom: 4px; }
.tl-card h3 { font-family: var(--font-display); font-size: 1.2rem; }
.tl-date { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-accent); white-space: nowrap; }
.tl-company { color: var(--text-faint); font-size: 14px; margin-bottom: 14px; }
.tl-card ul { display: flex; flex-direction: column; gap: 9px; }
.tl-card li { position: relative; padding-left: 20px; color: var(--text-dim); font-size: 14.5px; }
.tl-card li::before { content: "▹"; position: absolute; left: 0; color: var(--ink-accent); }
.tl-card strong { color: var(--text); }

/* ---------- Projects ---------- */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.project-card { padding: 28px; display: flex; flex-direction: column; transition: transform .25s, border-color .25s; }
.project-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.project-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.project-icon { font-size: 30px; }
.project-period { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }
.project-card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 4px; }
.project-sub { color: var(--ink-accent); font-size: 13.5px; font-family: var(--font-mono); margin-bottom: 14px; }
.project-desc { color: var(--text-dim); font-size: 14.5px; margin-bottom: 18px; flex: 1; }
.project-links { margin-top: 16px; }
.project-links a { font-size: 14px; font-weight: 600; color: var(--ink-accent); transition: opacity .2s; }
.project-links a:hover { opacity: 0.75; }

/* ---------- Education & Certs ---------- */
.edu-grid { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: start; }
.edu-col-title { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 18px; }
.edu-card { padding: 24px 26px; }
.edu-card h4 { font-family: var(--font-display); font-size: 1.1rem; }
.cert-meta { font-size: 12.5px; color: var(--text-faint); font-family: var(--font-mono); }

/* ---------- Certificate carousel (Coursera-style) ---------- */
.cert-block { margin-top: 44px; }
.cert-carousel { position: relative; }
.cert-track {
  display: flex; gap: 22px; overflow-x: auto;
  scroll-snap-type: x mandatory; scroll-behavior: smooth;
  padding: 6px 2px 18px; scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
.cert-track::-webkit-scrollbar { display: none; }
.cert-slide {
  flex: 0 0 min(520px, 86%); scroll-snap-align: center;
  margin: 0; padding: 0; border-radius: 18px; overflow: hidden;
  cursor: zoom-in; transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.cert-slide:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: 0 18px 44px rgba(0,0,0,.35); }
.cert-slide img { width: 100%; height: auto; display: block; background: #fff; }
.cert-slide figcaption { padding: 16px 18px 18px; }
.cert-slide figcaption h4 { font-family: var(--font-display); font-size: 1.02rem; font-weight: 600; margin-bottom: 4px; }
.cert-nav {
  position: absolute; top: 42%; transform: translateY(-50%); z-index: 3;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--bg-elev, rgba(20,20,24,.88)); color: var(--text);
  border: 1px solid var(--border-strong); backdrop-filter: blur(8px);
  font-size: 26px; line-height: 1; cursor: pointer; display: grid; place-items: center;
  transition: background .2s, transform .2s; user-select: none;
}
.cert-nav:hover { transform: translateY(-50%) scale(1.08); }
.cert-prev { left: -10px; }
.cert-next { right: -10px; }
.cert-dots { display: flex; gap: 8px; justify-content: center; margin-top: 4px; }
.cert-dots button {
  width: 8px; height: 8px; border-radius: 50%; border: 0; padding: 0;
  background: var(--border-strong); cursor: pointer; transition: transform .2s, background .2s;
}
.cert-dots button.active { background: var(--ink-accent); transform: scale(1.35); }

/* Certificate lightbox */
.cert-lightbox {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(8,8,12,.92); backdrop-filter: blur(10px);
  display: grid; place-items: center; padding: 28px;
}
.cert-lightbox[hidden] { display: none; }
.cert-lightbox img {
  max-width: 94vw; max-height: 90vh; border-radius: 10px;
  box-shadow: 0 24px 80px rgba(0,0,0,.6); background: #fff;
  animation: clZoom .25s ease;
}
@keyframes clZoom { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: scale(1); } }
.cl-close {
  position: absolute; top: 18px; right: 22px; width: 46px; height: 46px;
  border-radius: 50%; border: 1px solid var(--border-strong);
  background: rgba(30,30,36,.85); color: #fff; font-size: 26px; line-height: 1;
  cursor: pointer; display: grid; place-items: center;
}
@media (max-width: 720px) {
  .cert-slide { flex-basis: 92%; }
  .cert-nav { display: none; }
}

/* ---------- Contact ---------- */
.contact-box { padding: 56px 40px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.contact-desc { color: var(--text-dim); max-width: 560px; margin: 6px auto 30px; font-size: 1.05rem; }
.contact-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-bottom: 28px; }
.contact-form { width: 100%; max-width: 540px; margin: 0 auto 26px; display: flex; flex-direction: column; gap: 12px; text-align: left; }
.cf-row { display: flex; gap: 12px; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 13px 16px; border-radius: 12px; background: var(--surface-2);
  border: 1px solid var(--border); color: var(--text); font-family: var(--font-body); font-size: 15px; outline: none;
  transition: border-color .2s;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--ink-accent); }
.contact-form textarea { resize: vertical; }
.contact-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.contact-form .btn { align-self: center; min-width: 200px; }
.cf-status { text-align: center; font-size: 14px; min-height: 1.2em; margin: 0; }
.cf-status.ok { color: var(--green); }
.cf-status.err { color: #ff7a7a; }
@media (max-width: 540px) { .cf-row { flex-direction: column; } }

.contact-meta { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; font-size: 14px; color: var(--text-faint); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 30px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-brand { font-family: var(--font-display); font-weight: 600; }
.footer-copy { color: var(--text-faint); font-size: 13.5px; }
.footer-top { color: var(--text-dim); font-size: 14px; transition: color .2s; }
.footer-top:hover { color: var(--ink-accent); }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
[data-reveal].in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .skills-grid, .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-links {
    position: fixed; inset: 0 0 0 auto; width: min(82%, 300px); flex-direction: column; align-items: stretch;
    background: var(--bg-2); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    padding: 90px 22px 40px; gap: 4px; transform: translateX(101%); transition: transform .35s ease;
    border-left: 1px solid var(--border); z-index: 110; overflow-y: auto;
    box-shadow: -24px 0 60px rgba(0,0,0,.45);
  }
  .navbar .nav-links.open { transform: translateX(0) !important; }
  .nav-links a { font-size: 16px; padding: 13px 16px; border-radius: 10px; }
  .menu-btn { display: flex; z-index: 115; position: relative; }
  .edu-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .skills-grid, .projects-grid { grid-template-columns: 1fr; }
  .contact-box { padding: 40px 22px; }
  .contact-actions { flex-direction: column; width: 100%; }
  .contact-actions .btn { width: 100%; }
  .tl-card, .about-text { padding: 22px; }
  .brand-name { display: none; }
}

/* ============================================================
   Profile photo (About)
   ============================================================ */
.about-top { display: grid; grid-template-columns: 280px 1fr; gap: 28px; align-items: stretch; margin-bottom: 24px; }
.photo-card { padding: 16px; display: flex; align-items: center; justify-content: center; }
.photo-frame {
  position: relative; width: 100%; aspect-ratio: 1 / 1; border-radius: 16px; overflow: hidden;
  background: var(--grad-soft); border: 1px solid var(--border);
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-fallback {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; font-size: 4rem; color: #06101a; background: var(--grad);
}
.photo-ring { position: absolute; inset: -2px; border-radius: 18px; padding: 2px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: .6; pointer-events: none; }

/* ============================================================
   Theme picker (floating)
   ============================================================ */
.theme-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 120;
  width: 52px; height: 52px; border-radius: 50%; cursor: pointer;
  background: var(--grad); border: none; color: #06101a; font-size: 22px;
  display: grid; place-items: center; box-shadow: 0 10px 30px -8px rgba(0,0,0,.6);
  transition: transform .25s;
}
.theme-fab:hover { transform: rotate(25deg) scale(1.08); }
.theme-panel {
  position: fixed; right: 22px; bottom: 86px; z-index: 120;
  padding: 18px; width: 230px; border-radius: 16px;
  opacity: 0; transform: translateY(12px) scale(.96); pointer-events: none;
  transition: opacity .25s, transform .25s;
}
.theme-panel.open { opacity: 1; transform: none; pointer-events: auto; }
.theme-panel h4 { font-family: var(--font-display); font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--text-faint); margin-bottom: 12px; }
.swatches { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.swatch {
  cursor: pointer; border: 1px solid var(--border); background: var(--surface-2);
  border-radius: 11px; padding: 9px; display: flex; flex-direction: column; gap: 7px; align-items: flex-start;
  transition: border-color .2s, transform .2s;
}
.swatch:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.swatch.active { border-color: var(--text); box-shadow: 0 0 0 1px var(--text) inset; }
.swatch-bar { width: 100%; height: 22px; border-radius: 7px; }
.swatch-name { font-size: 12px; color: var(--text-dim); font-family: var(--font-mono); }
.mode-row { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border); }
.mode-row > span { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--text-faint); font-family: var(--font-display); }
.mode-toggle { display: flex; gap: 4px; cursor: pointer; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; padding: 4px; }
.mode-opt { width: 30px; height: 26px; display: grid; place-items: center; border-radius: 999px; font-size: 14px; opacity: .45; transition: opacity .2s, background .2s; }
.mode-opt.active { opacity: 1; background: var(--grad); }

.sw-ocean  { background: linear-gradient(120deg,#22d3ee,#3b82f6,#6366f1); }
.sw-cyber  { background: linear-gradient(120deg,#00e5ff,#7c5cff,#ff5cc8); }
.sw-matrix { background: linear-gradient(120deg,#45f0a0,#14b8a6,#00e5ff); }
.sw-sunset { background: linear-gradient(120deg,#ffd166,#ff8a3d,#ff5cc8); }

/* ============================================================
   Gallery
   ============================================================ */
.gallery-grid { columns: 3; column-gap: 16px; }
.gallery-item {
  break-inside: avoid; margin-bottom: 16px; border-radius: var(--radius); overflow: hidden;
  position: relative; cursor: pointer; border: 1px solid var(--border); background: var(--surface);
  transition: transform .25s, border-color .25s;
}
.gallery-item:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.gallery-item img, .gallery-item video { width: 100%; display: block; }
.vid-badge { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); z-index: 2; width: 48px; height: 48px; border-radius: 50%; background: rgba(5,8,16,.6); color: #fff; display: grid; place-items: center; font-size: 18px; padding-left: 3px; backdrop-filter: blur(4px); pointer-events: none; }
.lightbox video { max-width: 92vw; max-height: 82vh; border-radius: 14px; border: 1px solid var(--border-strong); background: #000; }
.gallery-item .ph { aspect-ratio: 4/3; display: grid; place-items: center; background: var(--grad-soft); font-size: 2.4rem; }
.gallery-cap {
  position: absolute; inset: auto 0 0 0; padding: 28px 16px 14px;
  background: linear-gradient(transparent, rgba(5,8,16,.85)); color: #fff;
  font-size: 13.5px; opacity: 0; transition: opacity .25s;
}
.gallery-item:hover .gallery-cap { opacity: 1; }
.gallery-cap .g-loc { display: block; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-accent); margin-top: 2px; }
.empty-note { color: var(--text-faint); font-size: 14.5px; padding: 22px; text-align: center; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center;
  background: rgba(4,6,12,.88); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 24px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 92vw; max-height: 82vh; border-radius: 14px; border: 1px solid var(--border-strong); }
.lightbox-cap { position: absolute; bottom: 26px; left: 0; right: 0; text-align: center; color: var(--text-dim); font-size: 14px; }
.lightbox-close { position: absolute; top: 22px; right: 26px; font-size: 30px; color: #fff; cursor: pointer; background: none; border: none; line-height: 1; }

/* ============================================================
   Blog / Travel
   ============================================================ */
.blog-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.blog-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, border-color .25s; }
.blog-card:hover { transform: translateY(-5px); border-color: var(--border-strong); }
.blog-media { position: relative; width: 100%; aspect-ratio: 16/9; background: var(--grad-soft); overflow: hidden; }
.blog-media img, .blog-media video, .blog-media iframe { width: 100%; height: 100%; object-fit: cover; display: block; border: 0; }
.blog-media .ph { width: 100%; height: 100%; display: grid; place-items: center; font-size: 2.6rem; }
.blog-type-tag {
  position: absolute; top: 12px; left: 12px; font-family: var(--font-mono); font-size: 11px;
  padding: 4px 10px; border-radius: 7px; background: rgba(5,8,16,.7); color: var(--cyan);
  backdrop-filter: blur(6px); border: 1px solid var(--border);
}
.blog-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.blog-meta { display: flex; align-items: center; gap: 12px; font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); margin-bottom: 10px; flex-wrap: wrap; }
.blog-meta .b-loc { color: var(--ink-accent); }
.blog-card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 8px; }
.blog-card p { color: var(--text-dim); font-size: 14.5px; }
.blog-card.text-only .blog-body { padding-top: 24px; }

/* ============================================================
   Responsive for new sections
   ============================================================ */
@media (max-width: 920px) {
  .gallery-grid { columns: 2; }
  .blog-list { grid-template-columns: 1fr; }
  .about-top { grid-template-columns: 220px 1fr; }
}
@media (max-width: 620px) {
  .gallery-grid { columns: 1; }
  .about-top { grid-template-columns: 1fr; }
  .photo-card { width: 100%; max-width: 260px; margin: 0 auto; }
  .theme-fab { right: 16px; bottom: 16px; }
  .theme-panel { right: 16px; bottom: 80px; }
}

/* ============================================================
   Filter bar (gallery + lessons)
   ============================================================ */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.filter-chip {
  cursor: pointer; font-family: var(--font-mono); font-size: 13px; padding: 8px 16px;
  border-radius: 999px; background: var(--surface); border: 1px solid var(--border);
  color: var(--text-dim); transition: color .2s, border-color .2s, background .2s, transform .2s;
}
.filter-chip:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-2px); }
.filter-chip.active { color: #06101a; background: var(--grad); border-color: transparent; font-weight: 600; }

/* ============================================================
   Blog "Read more" + post modal
   ============================================================ */
.blog-readmore {
  margin-top: 14px; align-self: flex-start; cursor: pointer; background: none; border: none;
  color: var(--ink-accent); font-family: var(--font-body); font-size: 14px; font-weight: 600; padding: 0;
  transition: opacity .2s;
}
.blog-readmore:hover { opacity: .7; }

.post-modal {
  position: fixed; inset: 0; z-index: 210; display: none; align-items: flex-start; justify-content: center;
  background: rgba(4,6,12,.85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 40px 20px; overflow-y: auto;
}
.post-modal.open { display: flex; }
.post-modal-inner {
  position: relative; width: 100%; max-width: 760px; border-radius: var(--radius); overflow: hidden;
  animation: popin .35s cubic-bezier(.2,.8,.2,1);
}
@keyframes popin { from { opacity: 0; transform: translateY(20px) scale(.98); } to { opacity: 1; transform: none; } }
.post-close {
  position: absolute; top: 14px; right: 16px; z-index: 3; width: 38px; height: 38px; border-radius: 50%;
  background: rgba(5,8,16,.6); border: 1px solid var(--border); color: #fff; font-size: 24px; cursor: pointer; line-height: 1;
}
.post-close:hover { background: rgba(5,8,16,.9); }
.post-media { width: 100%; max-height: 420px; overflow: hidden; background: var(--grad-soft); }
.post-media img, .post-media video { width: 100%; max-height: 420px; object-fit: cover; display: block; }
.post-media-video { aspect-ratio: 16/9; max-height: none; }
.post-media-video iframe { width: 100%; height: 100%; border: 0; display: block; }
.post-text { padding: 30px 34px 36px; }
.post-text h2 { font-family: var(--font-display); font-size: 1.7rem; margin: 6px 0 16px; line-height: 1.15; }
.post-text p { color: var(--text-dim); margin-bottom: 14px; font-size: 1.02rem; }

/* ============================================================
   Linux page — hero, lessons, terminal
   ============================================================ */
.lx-hero { min-height: auto; padding-top: 150px; padding-bottom: 40px; }

.lesson-search {
  display: flex; align-items: center; gap: 10px; padding: 12px 18px; margin-bottom: 18px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; color: var(--text-faint);
  transition: border-color .2s;
}
.lesson-search:focus-within { border-color: var(--ink-accent); color: var(--ink-accent); }
.lesson-search input {
  flex: 1; background: transparent; border: none; outline: none; color: var(--text);
  font-family: var(--font-body); font-size: 15px;
}
.lesson-search input::placeholder { color: var(--text-faint); }

.lessons-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.lesson-card { padding: 26px 28px; display: flex; flex-direction: column; transition: transform .25s, border-color .25s; }
.lesson-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.lesson-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.lesson-date { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }
.lesson-cat {
  font-family: var(--font-mono); font-size: 11.5px; padding: 4px 10px; border-radius: 7px;
  background: var(--grad-soft); border: 1px solid var(--border); color: var(--ink-accent);
}
.lesson-card h3 { font-family: var(--font-display); font-size: 1.25rem; margin-bottom: 10px; }
.lesson-body { color: var(--text-dim); font-size: 14.5px; flex: 1; }
.lesson-body p { margin-bottom: 10px; }
.lesson-body code, .post-text code {
  font-family: var(--font-mono); font-size: .88em; padding: 2px 6px; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--ink-accent);
}
.lesson-cmds { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.lesson-cmds-label { font-size: 12px; color: var(--text-faint); width: 100%; margin-bottom: 2px; }

.cmd-chip {
  cursor: pointer; font-family: var(--font-mono); font-size: 12.5px; padding: 6px 12px; border-radius: 8px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim);
  transition: color .2s, border-color .2s, transform .2s;
}
.cmd-chip::before { content: "$ "; color: var(--ink-accent); }
.cmd-chip:hover { color: var(--text); border-color: var(--ink-accent); transform: translateY(-2px); }

/* Terminal window */
.term-window { padding: 0; overflow: hidden; }
.term-bar {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  background: rgba(255,255,255,.04); border-bottom: 1px solid var(--border);
}
.term-dot { width: 12px; height: 12px; border-radius: 50%; }
.d-red { background: #ff5f57; } .d-yellow { background: #febc2e; } .d-green { background: #28c840; }
.term-bar-title { margin-left: 10px; font-family: var(--font-mono); font-size: 12.5px; color: var(--text-faint); }

.term {
  height: 440px; overflow-y: auto; padding: 18px 20px; cursor: text;
  font-family: var(--font-mono); font-size: 13.5px; line-height: 1.6;
  background: rgba(3,6,12,.55); color: #d8e0f0;
}
.term::-webkit-scrollbar { width: 9px; }
.term::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 6px; }
.term-line { white-space: pre-wrap; word-break: break-word; }
.term-inputline { display: flex; align-items: baseline; gap: 8px; }
.term-prompt { color: var(--green); white-space: nowrap; }
.term-input {
  flex: 1; background: transparent; border: none; outline: none; caret-color: var(--cyan);
  font-family: var(--font-mono); font-size: 13.5px; color: #eaf0ff; padding: 0;
}
.term-cmd { color: var(--cyan); }
.term-dir { color: #6ea8ff; font-weight: 600; }
.term-file { color: #d8e0f0; }
.term-err { color: #ff7a7a; }
.term-match { background: rgba(255,209,102,.28); color: #ffe7a6; border-radius: 3px; }
.term-dim { color: var(--text-faint); }
.term-logo { color: var(--cyan); }

/* nano editor overlay */
.nano-overlay {
  position: fixed; inset: 0; z-index: 240; display: none; align-items: center; justify-content: center;
  background: rgba(4,6,12,.8); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); padding: 24px;
}
.nano-overlay.open { display: flex; }
.nano-win {
  width: 100%; max-width: 760px; height: min(75vh, 560px); display: flex; flex-direction: column;
  border-radius: 12px; overflow: hidden; border: 1px solid var(--border-strong);
  background: #0b0f1a; box-shadow: var(--shadow); font-family: var(--font-mono);
}
.nano-top { background: #e8e8e8; color: #1a1a1a; font-size: 13px; font-weight: 600; padding: 7px 14px; text-align: center; }
.nano-area {
  flex: 1; width: 100%; resize: none; border: none; outline: none; padding: 16px 18px;
  background: #0b0f1a; color: #e8ecf6; font-family: var(--font-mono); font-size: 13.5px; line-height: 1.6;
}
.nano-bottom { display: flex; gap: 22px; justify-content: center; background: #e8e8e8; color: #1a1a1a; font-size: 12px; padding: 7px 14px; }
.nano-bottom b { color: #000; }

.term-hints { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 18px; }
.term-hints-label { font-size: 13px; color: var(--text-faint); margin-right: 4px; }
.term-note { margin-top: 14px; font-size: 13px; color: var(--text-faint); }

@media (max-width: 760px) {
  .lessons-grid { grid-template-columns: 1fr; }
  .term { height: 360px; font-size: 12.5px; }
  .post-text { padding: 24px 22px 28px; }
}

/* ============================================================
   Library (PDF books) + reader
   ============================================================ */
.books-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.book-card { position: relative; padding: 22px; display: flex; gap: 18px; align-items: flex-start; transition: transform .25s, border-color .25s; }
.book-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.book-cover { flex-shrink: 0; width: 92px; height: 124px; border-radius: 10px; overflow: hidden; background: var(--grad-soft); border: 1px solid var(--border); }
.book-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.book-emoji { width: 100%; height: 100%; display: grid; place-items: center; font-size: 2.6rem; }
.book-info { flex: 1; min-width: 0; }
.book-info h3 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 3px; }
.book-author { color: var(--ink-accent); font-size: 13px; font-family: var(--font-mono); margin-bottom: 10px; }
.book-desc { color: var(--text-dim); font-size: 14px; margin-bottom: 16px; }
.book-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.book-nofile { font-size: 12.5px; color: var(--text-faint); }

.blog-card, .lesson-card { position: relative; }
.pin-badge { position: absolute; top: 10px; right: 12px; z-index: 3; font-size: 14px; filter: drop-shadow(0 2px 4px rgba(0,0,0,.5)); }
.gallery-item .pin-badge, .blog-card .pin-badge { top: 10px; left: 12px; right: auto; }

.reader-modal {
  position: fixed; inset: 0; z-index: 230; display: none; align-items: center; justify-content: center;
  background: rgba(4,6,12,.9); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 24px;
}
.reader-modal.open { display: flex; }
.reader-inner { width: 100%; max-width: 960px; height: 90vh; display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.reader-bar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.reader-title { font-family: var(--font-display); font-weight: 600; font-size: 1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.reader-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.reader-close { background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; line-height: 1; }
.reader-inner iframe { flex: 1; width: 100%; border: 0; background: #2a2a2a; }

@media (max-width: 760px) {
  .books-grid { grid-template-columns: 1fr; }
  .reader-inner { height: 88vh; }
}

/* ============================================================
   Performance — drop backdrop-filter on small repeated cards
   (keeps frosted look on a few large surfaces; far cheaper to
   repaint while scrolling). Composite the fixed navbar.
   ============================================================ */
.stat-card, .skill-card, .tl-card, .project-card, .cert-card, .blog-card,
.lesson-card, .gallery-item, .photo-card, .cmd-chip, .filter-chip,
.lesson-search, .term-window, .book-card {
  backdrop-filter: none; -webkit-backdrop-filter: none;
}
/* NOTE: never put transform on .navbar — it contains the fixed mobile menu,
   and a transformed ancestor breaks position:fixed of its descendants. */
.glass { transform: translateZ(0); }

/* ============================================================
   Mobile overflow safety — never let text/graphics collide
   ============================================================ */
html, body { max-width: 100%; }
.tags span, .cmd-chip, .lesson-body code, .post-text code,
.project-sub, .cert-meta, .term-bar-title, .blog-meta, .lesson-meta {
  overflow-wrap: anywhere; word-break: break-word;
}
.cmd-chip { max-width: 100%; white-space: normal; text-align: left; }
.lesson-body, .blog-card p, .project-desc, .about-text p { overflow-wrap: anywhere; }
img, video, iframe { max-width: 100%; }

/* ============================================================
   Lesson progress + completion
   ============================================================ */
.lesson-progress { padding: 16px 22px; margin-bottom: 20px; }
.prog-top { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: var(--text-dim); margin-bottom: 10px; }
.prog-count { font-family: var(--font-mono); color: var(--ink-accent); font-weight: 600; }
.prog-bar { height: 8px; border-radius: 6px; background: var(--surface-2); overflow: hidden; }
.prog-bar i { display: block; height: 100%; border-radius: 6px; background: var(--grad); transition: width .5s cubic-bezier(.2,.8,.2,1); }
.lesson-foot { margin-top: 16px; }
.lesson-done {
  cursor: pointer; display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-body);
  font-size: 13.5px; font-weight: 600; padding: 8px 16px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-dim);
  transition: color .2s, border-color .2s, background .2s;
}
.lesson-done:hover { border-color: var(--border-strong); color: var(--text); }
.lesson-done .check { display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid var(--text-faint); font-size: 11px; line-height: 1; }
.lesson-done.is-done { background: var(--grad-soft); border-color: transparent; color: var(--green); }
.lesson-done.is-done .check { border-color: var(--green); color: var(--green); }
.lesson-card.done { border-color: color-mix(in srgb, var(--green) 35%, var(--border)); }

/* ============================================================
   Admin panel
   ============================================================ */
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-block { width: 100%; margin-top: 12px; }

.admin-body { min-height: 100vh; }
.admin-lock { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center; padding: 24px; }
.lock-card { padding: 40px 34px; width: 100%; max-width: 400px; text-align: center; display: flex; flex-direction: column; gap: 14px; }
.lock-icon { font-size: 40px; }
.lock-card h1 { font-family: var(--font-display); font-size: 1.5rem; }
.lock-card p { color: var(--text-dim); font-size: 14.5px; }
.lock-card input { padding: 12px 16px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text); font-size: 15px; outline: none; }
.lock-card input:focus { border-color: var(--ink-accent); }
.lock-note { font-size: 12px; color: var(--text-faint); }
.lock-note code, .admin-hint code { font-family: var(--font-mono); background: var(--surface-2); padding: 1px 6px; border-radius: 5px; color: var(--ink-accent); }

.admin-header { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 16px 24px; background: rgba(8,11,20,.7); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.admin-brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-size: 1.05rem; }
.admin-head-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.admin-tabs { display: flex; gap: 8px; flex-wrap: wrap; padding: 18px 24px 0; max-width: 1100px; margin: 0 auto; width: 100%; }
.admin-tab { cursor: pointer; padding: 10px 18px; border-radius: 12px 12px 0 0; background: transparent; border: 1px solid transparent; color: var(--text-dim); font-family: var(--font-body); font-size: 14.5px; font-weight: 500; }
.admin-tab:hover { color: var(--text); }
.admin-tab.active { background: var(--surface); border-color: var(--border); border-bottom-color: transparent; color: var(--text); }
.admin-main { max-width: 1100px; margin: 0 auto; padding: 22px 24px 60px; width: 100%; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.admin-card { padding: 24px 26px; margin-bottom: 20px; }
.admin-card h2 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 14px; }
.admin-hint { font-size: 13px; color: var(--text-faint); margin-bottom: 14px; line-height: 1.5; }

.admin-list { display: flex; flex-direction: column; gap: 8px; max-height: 60vh; overflow-y: auto; }
.admin-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); cursor: pointer; transition: border-color .2s; }
.admin-item:hover { border-color: var(--border-strong); }
.admin-item.active { border-color: var(--ink-accent); }
.admin-item-title { font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-item-actions { display: flex; gap: 4px; flex-shrink: 0; }
.admin-item-actions button { cursor: pointer; width: 28px; height: 28px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim); font-size: 13px; }
.admin-item-actions button:hover { color: var(--text); border-color: var(--border-strong); }
.admin-item-actions button.danger:hover { color: #ff7a7a; border-color: #ff7a7a; }

.admin-form { display: flex; flex-direction: column; gap: 14px; }
.admin-field { display: flex; flex-direction: column; gap: 6px; }
.admin-field > span { font-size: 13px; color: var(--text-dim); }
.admin-field input, .admin-field select, .admin-field textarea {
  padding: 10px 13px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text); font-family: var(--font-body); font-size: 14.5px; outline: none; width: 100%;
}
.admin-field textarea.mono, textarea.mono { font-family: var(--font-mono); font-size: 13px; }
.admin-field input:focus, .admin-field select:focus, .admin-field textarea:focus { border-color: var(--ink-accent); }
.admin-field textarea { resize: vertical; }
.admin-form-actions { display: flex; gap: 10px; margin-top: 4px; }
.admin-export-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }

/* Inbox */
.msg-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; margin-bottom: 12px; }
.msg-top { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.msg-top b { font-size: 15px; }
.msg-top span { font-size: 12px; color: var(--text-faint); font-family: var(--font-mono); }
.msg-email { font-size: 13px; color: var(--cyan); font-family: var(--font-mono); display: inline-block; margin: 2px 0 8px; }
.msg-body { color: var(--text-dim); font-size: 14.5px; white-space: pre-wrap; margin-bottom: 12px; }

/* Analytics */
.astat-row { display: flex; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.astat { flex: 1; min-width: 130px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; display: flex; flex-direction: column; gap: 4px; }
.anum { font-family: var(--font-display); font-weight: 700; font-size: 2rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.alabel { font-size: 13px; color: var(--text-faint); }
.asub { font-family: var(--font-display); font-size: 1rem; margin: 18px 0 12px; }
.abars { display: flex; gap: 8px; align-items: flex-end; height: 120px; padding: 8px 0; }
.abar { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 4px; height: 100%; }
.abar i { display: block; width: 70%; max-width: 34px; background: var(--grad); border-radius: 5px 5px 0 0; min-height: 2px; }
.abar span { font-size: 10.5px; color: var(--text-faint); font-family: var(--font-mono); }
.abar b { font-size: 11px; color: var(--text-dim); }
.apages { display: flex; flex-direction: column; gap: 6px; }
.apage { display: flex; justify-content: space-between; padding: 9px 13px; background: var(--surface); border: 1px solid var(--border); border-radius: 9px; font-size: 13.5px; }
.apage span { font-family: var(--font-mono); color: var(--text-dim); }
.apage b { color: var(--cyan); }

.admin-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); z-index: 320;
  background: var(--grad); color: #06101a; font-weight: 600; padding: 12px 22px; border-radius: 12px;
  box-shadow: var(--shadow); opacity: 0; transition: opacity .25s, transform .25s; font-size: 14px;
}
.admin-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Composer (Instagram/Telegram-style quick post) */
.composer { padding: 22px 24px; margin-bottom: 22px; display: flex; flex-direction: column; gap: 12px; max-width: 680px; }
.composer-title { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.composer-drop { position: relative; border: 1.5px dashed var(--border-strong); border-radius: 14px; min-height: 150px; display: grid; place-items: center; cursor: pointer; overflow: hidden; background: var(--surface); transition: border-color .2s, background .2s; }
.composer-drop:hover, .composer-drop.over { border-color: var(--cyan); background: var(--surface-2); }
.cmp-ph { display: flex; flex-direction: column; align-items: center; gap: 4px; color: var(--text-faint); padding: 20px; }
.cmp-ph .cmp-ic { font-size: 26px; }
.cmp-ph b { color: var(--text); }
.cmp-prev { width: 100%; position: relative; }
.cmp-prev img, .cmp-prev video { width: 100%; max-height: 320px; object-fit: cover; display: block; }
.cmp-x { position: absolute; top: 10px; right: 10px; background: rgba(5,8,16,.75); color: #fff; font-size: 12px; padding: 5px 11px; border-radius: 999px; backdrop-filter: blur(6px); }
.cmp-busy { font-size: 13.5px; color: var(--cyan); }
.composer input, .composer textarea { padding: 11px 14px; border-radius: 11px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text); font-family: var(--font-body); font-size: 15px; outline: none; width: 100%; }
.composer input:focus, .composer textarea:focus { border-color: var(--cyan); }
.composer textarea { resize: vertical; }
.composer-actions { display: flex; align-items: center; gap: 12px; }
.cmp-post { min-width: 110px; }
.cmp-status { font-size: 13.5px; color: var(--text-faint); }

/* Drag & drop zones */
.dropzone {
  border: 1.5px dashed var(--border-strong); border-radius: 12px; padding: 26px; text-align: center;
  cursor: pointer; color: var(--text-faint); transition: border-color .2s, background .2s; background: var(--surface);
}
.dropzone:hover, .dropzone.over { border-color: var(--ink-accent); background: var(--surface-2); color: var(--text); }
.dz-inner { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.dz-icon { font-size: 22px; }
.dz-inner b { color: var(--text); }
.dz-sm { padding: 12px; margin-top: 6px; }
.dz-sm .dz-inner { flex-direction: row; gap: 8px; font-size: 13px; }
.dz-preview { margin-top: 8px; }
.dz-preview img { max-height: 90px; border-radius: 8px; border: 1px solid var(--border); }
.dz-preview span { display: block; font-size: 12px; color: var(--text-faint); margin-top: 4px; word-break: break-all; }
.dz-file { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-dim); }

/* Media library */
.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-top: 18px; }
.media-card { padding: 12px; border-radius: 12px; }
.media-thumb { height: 100px; border-radius: 8px; overflow: hidden; background: var(--surface-2); display: grid; place-items: center; margin-bottom: 8px; }
.media-thumb img { width: 100%; height: 100%; object-fit: cover; }
.media-thumb span { font-size: 2.2rem; }
.media-name { font-size: 13px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.media-meta { font-size: 11px; color: var(--text-faint); margin: 4px 0 10px; overflow: hidden; text-overflow: ellipsis; }
.media-meta code { font-size: 10.5px; }
.media-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.media-actions button { cursor: pointer; flex: 1; padding: 6px 8px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim); font-size: 11.5px; }
.media-actions button:hover { color: var(--text); border-color: var(--border-strong); }
.media-actions button.danger:hover { color: #ff7a7a; border-color: #ff7a7a; }

/* Category rows */
.cat-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
.cat-row, .cat-add { display: grid; grid-template-columns: 56px 1fr 1fr 1fr auto; gap: 8px; align-items: center; }
.cat-add { margin-top: 6px; }
.cat-row input, .cat-add input { padding: 8px 10px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text); font-size: 13px; outline: none; min-width: 0; }
.cat-row input:focus, .cat-add input:focus { border-color: var(--ink-accent); }
.cat-row input[readonly] { color: var(--ink-accent); font-family: var(--font-mono); }
.cat-del { cursor: pointer; padding: 8px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim); }
.cat-del:hover { color: #ff7a7a; border-color: #ff7a7a; }

@media (max-width: 760px) {
  .admin-grid { grid-template-columns: 1fr; }
  .admin-tabs { padding: 14px 16px 0; }
  .admin-main { padding: 18px 16px 50px; }
  .cat-row, .cat-add { grid-template-columns: 48px 1fr 1fr; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ============================================================
   Secondary pages: blog list, single post, share, gallery albums
   ============================================================ */
section.page-hero { padding-top: 124px; }
article.post-page { max-width: 820px; padding-top: 120px; padding-bottom: 80px; }
.post-back { display: inline-block; margin-bottom: 22px; color: var(--text-dim); font-weight: 600; font-size: .92rem; transition: color .2s; }
.post-back:hover { color: var(--ink-accent); }
.post-page .post-media { margin: 0 0 28px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.post-page .post-media img, .post-page .post-media video { width: 100%; display: block; }
.post-page .post-media-video { position: relative; padding-top: 56.25%; }
.post-page .post-media-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.post-title { font-family: var(--font-display); font-size: clamp(1.9rem, 4vw, 2.9rem); line-height: 1.12; margin: 10px 0 18px; }
.post-text .blog-meta { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; color: var(--text-dim); font-size: .9rem; }
.read-time { color: var(--ink-accent); font-weight: 600; }
.post-text p { font-size: 1.08rem; line-height: 1.8; color: var(--text); margin: 0 0 1.15em; }
.post-text strong { color: var(--ink-accent); }

.post-share { margin: 40px 0 10px; padding-top: 26px; border-top: 1px solid var(--border); }
.post-share-label { display: block; font-weight: 600; color: var(--text-dim); margin-bottom: 12px; font-size: .95rem; }
.share-row { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--surface); border: 1px solid var(--border); color: var(--text); cursor: pointer; transition: transform .18s, border-color .18s, color .18s, background .18s; }
.share-btn:hover { transform: translateY(-3px); border-color: var(--ink-accent); color: var(--ink-accent); }
.share-btn.ok { color: var(--green); border-color: var(--green); }

.post-related { margin-top: 52px; }
.post-related h3 { font-family: var(--font-display); font-size: 1.25rem; margin-bottom: 16px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.related-card { display: block; padding: 16px 18px; border-radius: var(--radius); }
.related-card:hover { transform: translateY(-3px); }
.related-date { font-size: .8rem; color: var(--text-dim); }
.related-card h4 { margin-top: 6px; font-size: 1rem; line-height: 1.35; }

/* Blog list grid (blog.html) */
.bl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.bl-card { display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden; position: relative; transition: transform .2s, box-shadow .2s; }
.bl-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.bl-thumb { position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--surface); }
.bl-thumb img, .bl-thumb video { width: 100%; height: 100%; object-fit: cover; }
.bl-thumb .ph { width: 100%; height: 100%; display: grid; place-items: center; font-size: 2.4rem; }
.bl-thumb-text { display: grid; place-items: center; font-size: 2.6rem; background: var(--grad-soft); }
.bl-body { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.bl-body h3 { font-size: 1.15rem; line-height: 1.3; }
.bl-body p { color: var(--text-dim); font-size: .94rem; line-height: 1.6; flex: 1; }
.bl-read { color: var(--ink-accent); font-weight: 600; font-size: .9rem; margin-top: 4px; }
.blog-viewall { margin: 28px auto 0; display: inline-flex; }
a.blog-viewall { width: max-content; }

/* Gallery albums */
.album-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.album-card { display: block; position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; transition: transform .2s, box-shadow .2s; border: 1px solid var(--border); }
.album-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.album-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.album-card:hover img { transform: scale(1.05); }
.album-card .ph { width: 100%; height: 100%; display: grid; place-items: center; font-size: 2.6rem; background: var(--grad-soft); }
.album-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end; padding: 16px 18px; background: linear-gradient(to top, rgba(0,0,0,.78), transparent 65%); }
.album-overlay h3 { color: #fff; font-size: 1.1rem; }
.album-count { color: rgba(255,255,255,.8); font-size: .82rem; margin-top: 2px; }
.album-photos { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.album-photos figure { position: relative; aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; background: var(--surface); }
.album-photos img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.album-photos figure:hover img { transform: scale(1.06); }

/* Album tile captions + album page title */
.album-title { margin-bottom: 24px; }
.album-photos figure figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 8px 10px; font-size: .78rem; color: #fff; background: linear-gradient(to top, rgba(0,0,0,.8), transparent); opacity: 0; transition: opacity .2s; }
.album-photos figure:hover figcaption { opacity: 1; }
.album-photos .vid-badge { position: absolute; top: 8px; right: 8px; }
.lb-count { opacity: .7; margin-left: 8px; font-size: .85em; }

/* Admin: gallery album uploader */
.cmp-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
.cmp-fields input { width: 100%; }
@media (max-width: 560px) { .cmp-fields { grid-template-columns: 1fr; } }
.cmp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); gap: 8px; margin: 12px 0; }
.cmp-thumb { position: relative; aspect-ratio: 1; border-radius: 10px; overflow: hidden; background: var(--surface); border: 1px solid var(--border); }
.cmp-thumb img, .cmp-thumb video { width: 100%; height: 100%; object-fit: cover; }
.cmp-thumb-x { position: absolute; top: 3px; right: 3px; width: 22px; height: 22px; border-radius: 50%; border: 0; background: rgba(0,0,0,.65); color: #fff; cursor: pointer; font-size: .7rem; line-height: 1; display: grid; place-items: center; }
.cmp-thumb-x:hover { background: #e5484d; }

/* Explore digest cards (index → dedicated pages) */
.digest-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.digest-card { position: relative; display: flex; align-items: center; gap: 16px; padding: 22px 24px; border-radius: var(--radius); overflow: hidden; transition: transform .2s, box-shadow .2s, border-color .2s; }
.digest-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.digest-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .16; z-index: 0; }
.digest-card:hover .digest-bg { opacity: .26; }
.digest-icon { position: relative; z-index: 1; font-size: 2rem; width: 56px; height: 56px; display: grid; place-items: center; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); flex-shrink: 0; }
.digest-body { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 3px; min-width: 0; flex: 1; }
.digest-body b { font-family: var(--font-display); font-size: 1.2rem; }
.digest-sub { color: var(--ink-accent); font-size: .86rem; font-weight: 600; }
.digest-teaser { color: var(--text-dim); font-size: .86rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.digest-arrow { position: relative; z-index: 1; color: var(--text-dim); font-size: 1.3rem; transition: transform .2s, color .2s; flex-shrink: 0; }
.digest-card:hover .digest-arrow { transform: translateX(4px); color: var(--ink-accent); }
@media (max-width: 680px) { .digest-grid { grid-template-columns: 1fr; } }