/* ==========================================================================
   TIPSON.PL — Cyber-Tech Design System
   Dark-first, with light theme via [data-theme="light"]
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --bg-0: #04060d;
  --bg-1: #070b16;
  --bg-2: #0b1120;
  --surface: rgba(148, 178, 255, 0.05);
  --surface-2: rgba(148, 178, 255, 0.08);
  --text: #e9efff;
  --text-soft: #aab8d8;
  --muted: #7e8db0;
  --line: rgba(126, 160, 255, 0.14);
  --line-strong: rgba(126, 160, 255, 0.28);

  --c1: #00e5ff;           /* cyan   */
  --c2: #7c5cff;           /* violet */
  --c3: #ff4ecd;           /* magenta*/
  --ok: #3cf0a0;

  --grad: linear-gradient(100deg, var(--c1), var(--c2) 55%, var(--c3));
  --grad-soft: linear-gradient(100deg, rgba(0,229,255,.16), rgba(124,92,255,.16) 55%, rgba(255,78,205,.16));

  --glow-1: 0 0 24px rgba(0, 229, 255, 0.35);
  --glow-2: 0 0 34px rgba(124, 92, 255, 0.35);
  --shadow-1: 0 14px 44px rgba(2, 6, 18, 0.55);
  --shadow-2: 0 24px 70px rgba(2, 6, 18, 0.65);

  --radius: 18px;
  --radius-lg: 26px;
  --nav-h: 68px;

  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.9, 0.28, 1);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-0: #eef2fa;
  --bg-1: #f4f7fd;
  --bg-2: #ffffff;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-2: rgba(255, 255, 255, 0.92);
  --text: #0d1730;
  --text-soft: #37456b;
  --muted: #5d6c92;
  --line: rgba(18, 46, 120, 0.13);
  --line-strong: rgba(18, 46, 120, 0.26);

  --c1: #0090b8;
  --c2: #5f3fe0;
  --c3: #cf2fa0;
  --ok: #0d9f66;

  --grad: linear-gradient(100deg, #00a6cf, #5f3fe0 55%, #cf2fa0);
  --grad-soft: linear-gradient(100deg, rgba(0,166,207,.12), rgba(95,63,224,.12) 55%, rgba(207,47,160,.12));

  --glow-1: 0 6px 24px rgba(0, 144, 184, 0.25);
  --glow-2: 0 6px 30px rgba(95, 63, 224, 0.22);
  --shadow-1: 0 14px 40px rgba(24, 40, 90, 0.12);
  --shadow-2: 0 24px 60px rgba(24, 40, 90, 0.16);
  color-scheme: light;
}

/* ---------- Base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.45s var(--ease), color 0.45s var(--ease);
}

::selection { background: rgba(0, 229, 255, 0.28); color: #fff; }
[data-theme="light"] ::selection { background: rgba(0, 144, 184, 0.22); color: #06121f; }

::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--c2), var(--c1)); border-radius: 8px; border: 2px solid var(--bg-1); }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 22px; position: relative; }

/* ---------- Ambient background ---------- */
#bg-net {
  position: fixed; inset: 0; z-index: -3;
  width: 100%; height: 100%;
}

.bg-aurora {
  position: fixed; inset: 0; z-index: -4; pointer-events: none;
  background:
    radial-gradient(52vw 40vh at 12% -6%, rgba(124, 92, 255, 0.16), transparent 62%),
    radial-gradient(46vw 38vh at 92% 8%, rgba(0, 229, 255, 0.13), transparent 60%),
    radial-gradient(56vw 44vh at 50% 112%, rgba(255, 78, 205, 0.10), transparent 64%),
    var(--bg-0);
  transition: background 0.45s var(--ease);
}
[data-theme="light"] .bg-aurora {
  background:
    radial-gradient(52vw 40vh at 12% -6%, rgba(95, 63, 224, 0.10), transparent 62%),
    radial-gradient(46vw 38vh at 92% 8%, rgba(0, 166, 207, 0.10), transparent 60%),
    radial-gradient(56vw 44vh at 50% 112%, rgba(207, 47, 160, 0.07), transparent 64%),
    var(--bg-0);
}

.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(rgba(126, 160, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 160, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 35%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 35%, transparent 78%);
}
[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(rgba(18, 46, 120, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 46, 120, 0.055) 1px, transparent 1px);
}

/* ---------- Scroll progress ---------- */
#scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: var(--grad); z-index: 1200;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  background: rgba(6, 10, 20, 0.72);
  background: color-mix(in srgb, var(--bg-0) 62%, transparent);
  border-bottom: 1px solid var(--line);
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.nav.scrolled { box-shadow: var(--shadow-1); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }

.logo {
  display: flex; align-items: center; gap: 11px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.32rem;
  letter-spacing: 0.06em; text-decoration: none; color: var(--text);
}
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px; flex: 0 0 auto;
  display: grid; place-items: center;
  background: var(--grad);
  box-shadow: var(--glow-1);
  animation: logoPulse 4.5s ease-in-out infinite;
}
.logo-mark svg { width: 20px; height: 20px; }
@keyframes logoPulse {
  0%, 100% { box-shadow: 0 0 16px rgba(0, 229, 255, 0.35); }
  50% { box-shadow: 0 0 30px rgba(124, 92, 255, 0.55); }
}
.logo .tip { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  position: relative; display: block; padding: 9px 14px;
  font-size: 0.94rem; font-weight: 500; text-decoration: none;
  color: var(--text-soft); border-radius: 10px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.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: 4px; height: 2px;
  border-radius: 2px; background: var(--grad);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.55);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 40px; height: 40px; border-radius: 12px; cursor: pointer;
  display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--line);
  color: var(--text-soft);
  transition: all 0.3s var(--ease);
}
.theme-toggle:hover { color: var(--c1); border-color: var(--line-strong); box-shadow: var(--glow-1); transform: translateY(-1px); }
.theme-toggle svg { width: 19px; height: 19px; }
.theme-toggle .ico-sun { display: none; }
[data-theme="light"] .theme-toggle .ico-sun { display: block; }
[data-theme="light"] .theme-toggle .ico-moon { display: none; }

.nav-burger {
  display: none; width: 42px; height: 40px; border-radius: 12px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--line); color: var(--text);
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-burger span { width: 18px; height: 2px; background: currentColor; border-radius: 2px; transition: 0.3s var(--ease); }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-burger { display: flex; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 14px 18px 20px;
    background: rgba(6, 10, 20, 0.95);
    background: color-mix(in srgb, var(--bg-0) 92%, transparent);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: 0.3s var(--ease);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 13px 14px; font-size: 1.02rem; }
}

/* ---------- Typography helpers ---------- */
.kicker {
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--c1);
  display: inline-flex; align-items: center; gap: 10px;
}
.kicker::before { content: ""; width: 26px; height: 1px; background: var(--grad); box-shadow: 0 0 8px rgba(0,229,255,.6); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.16; letter-spacing: -0.01em; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sec { padding: 96px 0; position: relative; }
.sec-tight { padding: 64px 0; }
.sec-head { max-width: 720px; margin-bottom: 52px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .kicker { justify-content: center; }
.sec-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); margin: 14px 0 14px; }
.sec-head p { color: var(--text-soft); font-size: 1.06rem; }

.divider {
  height: 1px; border: 0; margin: 0;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

/* ---------- Buttons ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 28px; border-radius: 999px; cursor: pointer;
  font-family: var(--font-display); font-weight: 600; font-size: 0.98rem;
  text-decoration: none; border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
  will-change: transform;
}
.btn-primary {
  color: #051018; background: var(--grad);
  box-shadow: 0 10px 30px rgba(0, 229, 255, 0.25), 0 4px 14px rgba(124, 92, 255, 0.25);
}
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0, 229, 255, 0.4), 0 8px 22px rgba(255, 78, 205, 0.3); }
.btn-ghost {
  color: var(--text); background: var(--surface);
  border-color: var(--line-strong);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--c1); box-shadow: var(--glow-1); }
.btn .arr { transition: transform 0.25s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- Chips / tags ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.02em;
  padding: 5px 12px; border-radius: 999px;
  color: var(--text-soft);
  background: var(--surface); border: 1px solid var(--line);
  transition: 0.25s var(--ease);
}
.chip:hover { color: var(--c1); border-color: var(--c1); box-shadow: 0 0 14px rgba(0, 229, 255, 0.25); transform: translateY(-2px); }

/* ---------- Cards ---------- */
.card {
  position: relative; border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line);
  padding: 30px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  overflow: hidden;
}
.card::before {
  /* animated gradient border reveal */
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  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: 0; transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.card::after {
  /* spotlight follows cursor (set via --mx/--my in JS) */
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(0, 229, 255, 0.09), transparent 65%);
  opacity: 0; transition: opacity 0.35s var(--ease);
}
.card:hover { transform: translateY(-7px); border-color: transparent; box-shadow: var(--shadow-2), var(--glow-2); }
.card:hover::before, .card:hover::after { opacity: 1; }

.card h3 { font-size: 1.28rem; margin-bottom: 10px; }
.card p { color: var(--text-soft); font-size: 0.97rem; }

.card-icon {
  width: 56px; height: 56px; border-radius: 16px; margin-bottom: 20px;
  display: grid; place-items: center; font-size: 1.5rem;
  background: var(--grad-soft); border: 1px solid var(--line-strong);
  box-shadow: inset 0 0 22px rgba(0, 229, 255, 0.08);
}

.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; } }

/* ---------- Hero ---------- */
.hero { padding: calc(var(--nav-h) + 76px) 0 90px; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; gap: 42px; } }

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 0.8rem;
  padding: 8px 16px; border-radius: 999px;
  color: var(--text-soft); background: var(--surface);
  border: 1px solid var(--line-strong);
  margin-bottom: 26px;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
  animation: blink 2.2s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero h1 {
  font-size: clamp(2.5rem, 5.6vw, 4.1rem);
  font-weight: 700; margin-bottom: 20px; letter-spacing: -0.02em;
}
.hero .typed-line {
  font-family: var(--font-mono); font-size: clamp(0.95rem, 1.6vw, 1.12rem);
  color: var(--c1); min-height: 1.8em; margin-bottom: 18px;
}
.typed-cursor { display: inline-block; width: 9px; margin-left: 2px; background: var(--c1); box-shadow: 0 0 10px var(--c1); animation: blink 0.9s step-end infinite; }
.hero p.lead { color: var(--text-soft); font-size: 1.13rem; max-width: 560px; margin-bottom: 34px; }

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 46px; }

.hero-stats { display: flex; flex-wrap: wrap; gap: 14px; }
.stat {
  min-width: 132px; padding: 16px 20px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.stat b { display: block; font-family: var(--font-display); font-size: 1.7rem; letter-spacing: -0.01em; }
.stat b .plus { color: var(--c1); }
.stat span { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- Terminal window ---------- */
.terminal {
  border-radius: var(--radius-lg); overflow: hidden;
  background: rgba(6, 10, 20, 0.92);
  background: color-mix(in srgb, #060a14 88%, transparent);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-2), 0 0 60px rgba(124, 92, 255, 0.12);
  font-family: var(--font-mono); font-size: 0.84rem;
  transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition: transform 0.5s var(--ease);
}
.terminal:hover { transform: perspective(1200px) rotateY(0) rotateX(0); }
[data-theme="light"] .terminal { background: #0d1425; }
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; border-bottom: 1px solid rgba(126, 160, 255, 0.18);
  background: rgba(126, 160, 255, 0.06);
}
.terminal-bar i { width: 11px; height: 11px; border-radius: 50%; }
.terminal-bar i:nth-child(1) { background: #ff5f57; }
.terminal-bar i:nth-child(2) { background: #febc2e; }
.terminal-bar i:nth-child(3) { background: #28c840; }
.terminal-bar em { margin-left: 10px; font-style: normal; color: #8fa0c7; font-size: 0.78rem; }
.terminal-body { padding: 20px 20px 24px; min-height: 300px; color: #c9d6f2; }
.terminal-body .tline { white-space: pre-wrap; word-break: break-word; }
.terminal-body .ok { color: #3cf0a0; }
.terminal-body .accent { color: #00e5ff; }
.terminal-body .violet { color: #a68cff; }
.terminal-body .dim { color: #6d7ea6; }

/* ---------- Marquee (LED strip) ---------- */
.led-strip {
  border-block: 1px solid var(--line);
  background: rgba(8, 12, 24, 0.72);
  background: color-mix(in srgb, var(--bg-1) 72%, transparent);
  overflow: hidden; padding: 13px 0;
}
.led-strip .track {
  display: flex; gap: 3rem; width: max-content;
  font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--text-soft);
  animation: marquee 30s linear infinite;
}
.led-strip .track span b { color: var(--c1); font-weight: 500; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Timeline ---------- */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 4px; }
.timeline::before {
  content: ""; position: absolute; left: 19px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--c1), var(--c2), var(--c3));
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
  border-radius: 2px;
}
.tl-item { position: relative; padding: 0 0 42px 62px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-node {
  position: absolute; left: 8px; top: 4px;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg-1);
  border: 2px solid var(--c1);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--c1) 14%, transparent), 0 0 18px rgba(0, 229, 255, 0.5);
}
.tl-node::after { content: ""; position: absolute; inset: 6px; border-radius: 50%; background: var(--grad); }
.tl-year {
  display: inline-block; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em;
  color: var(--c1); padding: 4px 13px; border: 1px solid var(--line-strong); border-radius: 999px;
  background: var(--surface); margin-bottom: 12px;
}
.tl-item h3 { font-size: 1.24rem; margin-bottom: 8px; }
.tl-item p { color: var(--text-soft); max-width: 660px; }

/* ---------- Project cards ---------- */
.project-cover {
  height: 180px; margin: -30px -30px 24px; position: relative;
  display: flex; align-items: flex-end; padding: 20px 24px;
  background:
    radial-gradient(120% 130% at 85% -20%, color-mix(in srgb, var(--c2) 32%, transparent), transparent 60%),
    radial-gradient(110% 130% at 8% 115%, color-mix(in srgb, var(--c1) 24%, transparent), transparent 55%),
    var(--bg-2);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.project-cover.alt {
  background:
    radial-gradient(120% 130% at 85% -20%, color-mix(in srgb, var(--c3) 30%, transparent), transparent 60%),
    radial-gradient(110% 130% at 8% 115%, color-mix(in srgb, var(--c2) 26%, transparent), transparent 55%),
    var(--bg-2);
}
.project-cover .cover-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(126,160,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(126,160,255,.08) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(180deg, transparent, black);
  -webkit-mask-image: linear-gradient(180deg, transparent, black);
}
.project-cover .cover-title { position: relative; font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; }
.project-badge {
  position: absolute; top: 16px; right: 16px;
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em;
  padding: 5px 12px; border-radius: 999px;
  background: rgba(6, 10, 20, 0.55);
  background: color-mix(in srgb, var(--bg-0) 55%, transparent);
  border: 1px solid var(--line-strong); color: var(--c1);
  backdrop-filter: blur(6px);
}
.project-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.mini-btn {
  font-size: 0.86rem; font-weight: 600; text-decoration: none;
  padding: 9px 18px; border-radius: 999px;
  color: var(--text); border: 1px solid var(--line-strong);
  transition: 0.25s var(--ease);
}
.mini-btn:hover { border-color: var(--c1); color: var(--c1); box-shadow: var(--glow-1); transform: translateY(-2px); }

/* ---------- Video cards ---------- */
.video-card { padding: 0; overflow: hidden; }
.video-card iframe { width: 100%; aspect-ratio: 16 / 9; border: 0; display: block; }
.video-card .vc-body { padding: 20px 24px 24px; }
.video-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
.video-card p { font-size: 0.9rem; color: var(--muted); }

/* ---------- Feature / check lists ---------- */
.check-list { list-style: none; }
.check-list li { position: relative; padding: 7px 0 7px 32px; color: var(--text-soft); }
.check-list li::before {
  content: "▸"; position: absolute; left: 6px; top: 6px;
  color: var(--c1); text-shadow: 0 0 10px rgba(0, 229, 255, 0.7);
  font-family: var(--font-mono);
}
.check-list li b, .check-list li strong { color: var(--text); }

/* ---------- CTA panel ---------- */
.cta-panel {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  padding: 64px 40px; text-align: center;
  background:
    radial-gradient(90% 160% at 50% -40%, color-mix(in srgb, var(--c2) 26%, transparent), transparent 60%),
    linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-2);
}
.cta-panel::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: var(--grad); opacity: 0.55;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.cta-panel h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin-bottom: 14px; }
.cta-panel p { color: var(--text-soft); max-width: 560px; margin: 0 auto 30px; }
.cta-panel .btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ---------- Footer ---------- */
footer {
  margin-top: 40px; border-top: 1px solid var(--line);
  background: rgba(8, 12, 24, 0.82);
  background: color-mix(in srgb, var(--bg-1) 82%, transparent);
  backdrop-filter: blur(10px);
}
.footer-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
  padding: 56px 0 38px;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 {
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--c1);
  margin-bottom: 16px;
}
.footer-grid a {
  display: block; text-decoration: none; color: var(--text-soft);
  font-size: 0.93rem; padding: 4px 0;
  transition: color 0.25s var(--ease), transform 0.25s var(--ease);
}
.footer-grid a:hover { color: var(--c1); transform: translateX(4px); }
.footer-bottom {
  border-top: 1px solid var(--line); padding: 24px 0 30px;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center;
  color: var(--muted); font-size: 0.86rem;
}
.footer-bottom .sig { font-family: var(--font-mono); font-size: 0.78rem; }
.footer-bottom .sig b { color: var(--text-soft); font-weight: 500; }

/* ---------- Reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
.reveal-l { opacity: 0; transform: translateX(-30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); transition-delay: var(--d, 0s); }
.reveal-l.in { opacity: 1; transform: none; }
.reveal-r { opacity: 0; transform: translateX(30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); transition-delay: var(--d, 0s); }
.reveal-r.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-l, .reveal-r { opacity: 1; transform: none; }
}

/* ---------- Page header (subpages) ---------- */
.page-head { padding: calc(var(--nav-h) + 68px) 0 54px; text-align: center; }
.page-head h1 { font-size: clamp(2.1rem, 4.6vw, 3.3rem); margin: 16px 0 14px; }
.page-head p { color: var(--text-soft); font-size: 1.1rem; max-width: 640px; margin: 0 auto; }

/* ---------- LED matrix canvas ---------- */
.led-panel {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line-strong);
  background: #05070c;
  box-shadow: var(--shadow-2), inset 0 0 40px rgba(0, 0, 0, 0.8);
  position: relative;
}
.led-panel canvas { display: block; width: 100%; height: auto; image-rendering: pixelated; }
.led-panel .led-label {
  position: absolute; top: 12px; right: 14px;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em;
  color: rgba(160, 190, 255, 0.5); text-transform: uppercase;
}

/* ---------- Spec tables ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.spec-table td { padding: 11px 14px; border-bottom: 1px solid var(--line); color: var(--text-soft); }
.spec-table td:first-child { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--muted); width: 44%; text-transform: uppercase; }
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table td b { color: var(--text); font-weight: 600; }

/* ---------- Music player ---------- */
.player-shell {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  box-shadow: var(--shadow-2);
  backdrop-filter: blur(14px);
}
.player-vis { position: relative; height: 190px; background: rgba(6, 10, 20, 0.7); background: color-mix(in srgb, var(--bg-0) 70%, transparent); }
.player-vis canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.player-now {
  position: absolute; left: 22px; bottom: 16px; right: 22px;
  display: flex; align-items: baseline; gap: 12px; pointer-events: none;
}
.player-now .np-title { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; text-shadow: 0 2px 18px rgba(0,0,0,.5); }
.player-now .np-sub { font-family: var(--font-mono); font-size: 0.75rem; color: var(--c1); letter-spacing: 0.1em; text-transform: uppercase; }

.player-controls { display: flex; align-items: center; gap: 14px; padding: 18px 22px 8px; flex-wrap: wrap; }
.pc-btn {
  width: 46px; height: 46px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--line-strong); color: var(--text);
  transition: 0.25s var(--ease);
}
.pc-btn:hover { color: var(--c1); border-color: var(--c1); box-shadow: var(--glow-1); transform: translateY(-2px); }
.pc-btn.big {
  width: 60px; height: 60px; background: var(--grad); color: #051018; border: 0;
  box-shadow: 0 10px 26px rgba(0, 229, 255, 0.35);
}
[data-theme="light"] .pc-btn.big { color: #fff; }
.pc-btn.big:hover { transform: scale(1.06); color: #051018; }
[data-theme="light"] .pc-btn.big:hover { color: #fff; }
.pc-btn svg { width: 20px; height: 20px; }
.pc-btn.big svg { width: 24px; height: 24px; }
.pc-btn.toggled { color: var(--c1); border-color: var(--c1); box-shadow: var(--glow-1); }

.player-seek { flex: 1 1 240px; display: flex; align-items: center; gap: 12px; min-width: 200px; }
.time-label { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); min-width: 42px; text-align: center; }

input[type="range"].slider {
  -webkit-appearance: none; appearance: none; flex: 1; height: 6px; border-radius: 999px;
  background: linear-gradient(90deg, var(--c1) var(--fill, 0%), color-mix(in srgb, var(--line-strong) 80%, transparent) var(--fill, 0%));
  outline: none; cursor: pointer;
}
input[type="range"].slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c1);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.7); cursor: grab;
}
input[type="range"].slider::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c1);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.7); cursor: grab;
}
.player-vol { display: flex; align-items: center; gap: 10px; width: 150px; }
.player-vol svg { width: 18px; height: 18px; color: var(--muted); flex: 0 0 auto; }

.player-foot { padding: 8px 22px 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.player-foot .hint { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.06em; }

/* Track list */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.filter-btn {
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.05em; cursor: pointer;
  padding: 9px 18px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--line); color: var(--text-soft);
  transition: 0.25s var(--ease);
}
.filter-btn:hover { border-color: var(--c1); color: var(--c1); }
.filter-btn.active { background: var(--grad); color: #051018; border-color: transparent; box-shadow: var(--glow-1); }
[data-theme="light"] .filter-btn.active { color: #fff; }

.track-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 980px) { .track-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .track-grid { grid-template-columns: 1fr; } }

.track {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 16px; border-radius: 14px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--line);
  transition: 0.25s var(--ease);
}
.track:hover { border-color: var(--c1); transform: translateY(-2px); box-shadow: var(--glow-1); }
.track .t-num {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted);
  width: 26px; text-align: right; flex: 0 0 auto;
}
.track .t-name { flex: 1; font-weight: 500; font-size: 0.94rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track .t-cat { font-family: var(--font-mono); font-size: 0.66rem; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }
.track .t-play {
  width: 32px; height: 32px; border-radius: 50%; flex: 0 0 auto;
  display: grid; place-items: center; color: var(--text-soft);
  border: 1px solid var(--line-strong);
  transition: 0.25s var(--ease);
}
.track .t-play svg { width: 13px; height: 13px; }
.track:hover .t-play { color: var(--c1); border-color: var(--c1); }
.track.playing { border-color: var(--c1); background: var(--grad-soft); box-shadow: var(--glow-1); }
.track.playing .t-name { color: var(--c1); }
.track.playing .t-num { color: var(--c1); }

.eq { display: none; align-items: flex-end; gap: 2px; height: 14px; width: 18px; flex: 0 0 auto; }
.eq i { flex: 1; background: var(--c1); border-radius: 1px; box-shadow: 0 0 6px rgba(0,229,255,.8); animation: eq 0.9s ease-in-out infinite; }
.eq i:nth-child(2) { animation-delay: 0.22s; }
.eq i:nth-child(3) { animation-delay: 0.44s; }
@keyframes eq { 0%, 100% { height: 30%; } 50% { height: 100%; } }
.track.playing .eq { display: flex; }
.track.playing .t-play { display: none; }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-line {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 0; border-bottom: 1px solid var(--line);
}
.contact-line:last-child { border-bottom: 0; }
.contact-line .ci {
  width: 44px; height: 44px; border-radius: 13px; flex: 0 0 auto;
  display: grid; place-items: center; font-size: 1.15rem;
  background: var(--grad-soft); border: 1px solid var(--line-strong);
}
.contact-line h4 { font-size: 1.02rem; margin-bottom: 3px; }
.contact-line p, .contact-line a { color: var(--text-soft); font-size: 0.94rem; text-decoration: none; }
.contact-line a:hover { color: var(--c1); }
.contact-line a.mail { font-family: var(--font-mono); color: var(--c1); }

/* ---------- Utility ---------- */
.mt-1 { margin-top: 10px; } .mt-2 { margin-top: 20px; } .mt-3 { margin-top: 34px; } .mt-4 { margin-top: 56px; }
.mb-2 { margin-bottom: 20px; }
.center { text-align: center; }
.mono { font-family: var(--font-mono); }
.small { font-size: 0.85rem; color: var(--muted); }

.back-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 900;
  width: 46px; height: 46px; border-radius: 14px; cursor: pointer;
  display: grid; place-items: center;
  background: var(--surface-2); border: 1px solid var(--line-strong); color: var(--text-soft);
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: 0.3s var(--ease);
  backdrop-filter: blur(10px);
}
.back-top.show { opacity: 1; pointer-events: auto; transform: none; }
.back-top:hover { color: var(--c1); border-color: var(--c1); box-shadow: var(--glow-1); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 2000;
  padding: 12px 20px; background: var(--bg-2); color: var(--text);
  border-radius: 0 0 12px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Fallbacki (przeglądarki bez color-mix) — motyw jasny ---------- */
[data-theme="light"] .nav { background: rgba(244, 247, 253, 0.8); background: color-mix(in srgb, var(--bg-0) 62%, transparent); }
[data-theme="light"] .nav-links { background: rgba(244, 247, 253, 0.96); background: color-mix(in srgb, var(--bg-0) 92%, transparent); }
[data-theme="light"] .led-strip { background: rgba(244, 247, 253, 0.75); background: color-mix(in srgb, var(--bg-1) 72%, transparent); }
[data-theme="light"] footer { background: rgba(244, 247, 253, 0.85); background: color-mix(in srgb, var(--bg-1) 82%, transparent); }
[data-theme="light"] .player-vis { background: rgba(233, 238, 250, 0.7); background: color-mix(in srgb, var(--bg-0) 70%, transparent); }
[data-theme="light"] .project-badge { background: rgba(255, 255, 255, 0.6); background: color-mix(in srgb, var(--bg-0) 55%, transparent); }
@media (max-width: 900px) {
  [data-theme="light"] .nav-links { background: rgba(244, 247, 253, 0.97); background: color-mix(in srgb, var(--bg-0) 92%, transparent); }
}