/* ==========================================================================
   TECHNEEK — Engineering Tomorrow.
   Design system: dark, glass, glow. Inspired by Apple / Vercel / Stripe / Linear.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --bg: #05050a;
  --bg-elevated: #0b0b14;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text-primary: #f4f4f7;
  --text-secondary: #a5a6b1;
  --text-tertiary: #6e6f7b;

  --blue: #3b82f6;
  --blue-light: #60a5fa;
  --violet: #8b5cf6;
  --violet-light: #a78bfa;
  --fuchsia: #e879f9;
  --cyan: #22d3ee;
  --green: #34d399;

  --grad: linear-gradient(135deg, var(--blue) 0%, var(--violet) 100%);
  --grad-text: linear-gradient(90deg, var(--blue-light) 0%, var(--violet-light) 50%, var(--fuchsia) 100%);

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", var(--font-body);
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 72px;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Film-grain overlay for a premium finish */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2000;
  pointer-events: none;
  opacity: 0.022;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul { list-style: none; }

::selection { background: rgba(139, 92, 246, 0.35); color: #fff; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

:focus-visible { outline: 2px solid var(--blue-light); outline-offset: 3px; border-radius: 4px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed; top: -100px; left: 16px; z-index: 200;
  padding: 10px 18px; border-radius: var(--radius-sm);
  background: var(--grad); color: #fff; font-weight: 500; font-size: 14px;
  transition: top 0.2s var(--ease-out);
}
.skip-link:focus { top: 12px; }

/* ---------- Layout primitives ---------- */
.container { max-width: 1152px; margin: 0 auto; padding: 0 24px; }

.section { position: relative; padding: 8.5rem 0; }
.section-tight { padding: 5rem 0; }

/* Ambient side glows on alternating sections */
.section-glow-left::before,
.section-glow-right::before {
  content: "";
  position: absolute;
  top: 10%;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.09), transparent 65%);
}
.section-glow-left::before { left: -320px; }
.section-glow-right::before { right: -320px; background: radial-gradient(circle, rgba(59, 130, 246, 0.09), transparent 65%); }

.section-head { max-width: 640px; margin: 0 auto 4.5rem; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1.1rem;
}
.eyebrow-num {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.eyebrow-num::after { content: "·"; margin-left: 10px; color: var(--text-tertiary); }
.eyebrow-center { justify-content: center; }

.h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 1.3rem + 2.6vw, 3.1rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 1.1rem;
}

.lede { font-size: 17.5px; line-height: 1.7; color: var(--text-secondary); }
.body-text { margin-top: 1rem; font-size: 15.5px; line-height: 1.75; color: var(--text-secondary); }

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

.icon { width: 22px; height: 22px; flex: none; }
.icon-sm { width: 15px; height: 15px; }
.icon-brand { width: 18px; height: 18px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0.8rem 1.55rem;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out),
              background-color 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}
.btn .icon { width: 17px; height: 17px; transition: transform 0.25s var(--ease-out); }
.btn:hover .icon { transform: translateX(3px); }

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 36px rgba(99, 102, 241, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.btn-sm { padding: 0.6rem 1.1rem; font-size: 13.5px; }
.btn-block { width: 100%; margin-top: 1.4rem; }

/* ---------- Chips, tags, pills ---------- */
.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 1.1rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--violet-light);
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.09);
  border: 1px solid rgba(139, 92, 246, 0.22);
}

/* ---------- Interactive glow cards (Linear-style cursor highlight) ---------- */
.glow {
  position: relative;
  overflow: hidden;
}
.glow::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s var(--ease-out);
  background: radial-gradient(560px circle at var(--mx, 50%) var(--my, 50%),
              rgba(120, 119, 198, 0.13), transparent 42%);
}
.glow:hover::before { opacity: 1; }
.glow > * { position: relative; z-index: 1; }

/* ---------- Scroll-reveal ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
}
.js .reveal.visible { opacity: 1; transform: none; }
.js .reveal[data-delay="2"] { transition-delay: 0.1s; }
.js .reveal[data-delay="3"] { transition-delay: 0.2s; }
.js .reveal[data-delay="4"] { transition-delay: 0.3s; }
.js .reveal[data-delay="5"] { transition-delay: 0.4s; }
.js .reveal[data-delay="6"] { transition-delay: 0.5s; }

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background-color 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 5, 10, 0.72);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border-bottom-color: var(--border);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo { display: inline-flex; align-items: center; gap: 11px; }
.logo-mark { width: 32px; height: 32px; filter: drop-shadow(0 0 9px rgba(139, 92, 246, 0.5)); }
.logo-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.02em;
}

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.25s ease;
  padding: 4px 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--grad);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.25s ease, transform 0.25s var(--ease-out);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { opacity: 1; transform: none; }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  position: relative;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}
.nav-toggle span {
  position: absolute;
  left: 50%; top: 50%;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--text-primary);
  transform: translate(-50%, calc(-50% - 4px));
  transition: transform 0.3s var(--ease-out);
}
.nav-toggle span:last-child { transform: translate(-50%, calc(-50% + 4px)); }
.nav-toggle[aria-expanded="true"] span { transform: translate(-50%, -50%) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translate(-50%, -50%) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  padding: calc(var(--nav-h) + 32px) 28px 40px;
  background: rgba(5, 5, 10, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s var(--ease-out), visibility 0.3s;
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: none; }
.mobile-menu nav { display: flex; flex-direction: column; }
.mobile-menu nav > a {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}
.mobile-menu nav > a.btn {
  font-family: var(--font-body);
  font-size: 15px;
  border-bottom: 0;
  margin-top: 28px;
}
body.menu-open { overflow: hidden; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 5.5rem) 0 7rem;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 82% 62% at 50% 38%, #000 18%, transparent 72%);
  mask-image: radial-gradient(ellipse 82% 62% at 50% 38%, #000 18%, transparent 72%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  will-change: transform;
}
.orb-blue {
  width: 560px; height: 560px;
  top: -140px; left: -140px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.30), transparent 66%);
  animation: drift-a 26s ease-in-out infinite alternate;
}
.orb-purple {
  width: 520px; height: 520px;
  top: 120px; right: -180px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.28), transparent 66%);
  animation: drift-b 30s ease-in-out infinite alternate;
}
.orb-cyan {
  width: 420px; height: 420px;
  bottom: -160px; left: 38%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.14), transparent 66%);
  animation: drift-a 34s ease-in-out infinite alternate-reverse;
}
@keyframes drift-a {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(70px, 50px) scale(1.12); }
}
@keyframes drift-b {
  from { transform: translate(0, 0) scale(1.08); }
  to   { transform: translate(-60px, 60px) scale(1); }
}

.hero-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 2.4rem;
}
.pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55); }
  70%  { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.1rem, 1.6rem + 8vw, 6.9rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  margin-bottom: 1.8rem;
}
.hero-gradient {
  background: var(--grad-text);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 7s ease-in-out infinite alternate;
  filter: drop-shadow(0 0 42px rgba(139, 92, 246, 0.35));
}
@keyframes shimmer {
  from { background-position: 0% center; }
  to   { background-position: 100% center; }
}

.hero-sub {
  max-width: 590px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 2.6rem;
}

.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }

/* Terminal */
.hero-terminal {
  width: min(660px, 100%);
  margin-top: 4.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(11, 11, 20, 0.62);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5), 0 0 60px rgba(99, 102, 241, 0.10);
  text-align: left;
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}
.term-dot { width: 11px; height: 11px; border-radius: 50%; }
.term-dot.red { background: #ff5f57; }
.term-dot.yellow { background: #febc2e; }
.term-dot.green { background: #28c840; }
.terminal-title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
}
.terminal-body {
  min-height: 216px;
  padding: 20px 22px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 2;
}
.term-line { display: block; white-space: pre-wrap; word-break: break-word; }
.term-prompt { color: var(--blue-light); margin-right: 10px; }
.term-cmd { color: var(--text-primary); }
.term-out { color: var(--text-secondary); }
.term-out.ok { color: var(--green); }
.term-out.note {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 500;
}
.cursor {
  display: inline-block;
  width: 8px; height: 16px;
  margin-left: 3px;
  vertical-align: -2px;
  background: var(--blue-light);
  animation: blink 1.1s steps(2, start) infinite;
}
@keyframes blink { to { visibility: hidden; } }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.scroll-line {
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, var(--violet-light), transparent);
  animation: scroll-pulse 2.2s ease-in-out infinite;
  transform-origin: top;
}
@keyframes scroll-pulse {
  0%, 100% { transform: scaleY(0.35); opacity: 0.4; }
  50%      { transform: scaleY(1); opacity: 1; }
}

/* ==========================================================================
   MARQUEE
   ========================================================================== */
.marquee {
  position: relative;
  padding: 1.6rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-group { display: flex; align-items: center; }
.marquee-item {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  white-space: nowrap;
  transition: color 0.3s ease;
}
.marquee-item:hover { color: var(--text-primary); }
.marquee-item::after { content: "✦"; margin: 0 26px; color: rgba(139, 92, 246, 0.4); font-size: 10px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 5rem;
  align-items: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem 2.5rem;
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 1.6rem + 1.4vw, 2.7rem);
  letter-spacing: -0.02em;
  line-height: 1;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label { font-size: 13.5px; color: var(--text-tertiary); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.value-card {
  padding: 1.8rem 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}
.value-card:nth-child(even) { transform: translateY(22px); }
.value-card:hover {
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 12px 44px rgba(0, 0, 0, 0.35), 0 0 34px rgba(99, 102, 241, 0.12);
}
.value-card h3 {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.value-card p { font-size: 14px; line-height: 1.65; color: var(--text-secondary); }

/* ==========================================================================
   FEATURED CONTENT — bento grid
   ========================================================================== */
.bento {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.topic-card {
  display: flex;
  flex-direction: column;
  padding: 1.7rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}
.topic-card:hover {
  transform: translateY(-5px);
  border-color: rgba(96, 165, 250, 0.38);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.12);
}
.span-2 { grid-column: span 2; }

.topic-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 1.3rem;
}
.topic-icon {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--violet-light);
  transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}
.topic-card:hover .topic-icon {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 0 22px rgba(99, 102, 241, 0.5);
}
.topic-card h3 {
  font-family: var(--font-display);
  font-size: 18.5px;
  font-weight: 600;
  margin-bottom: 0.55rem;
}
.topic-card > p { font-size: 14.5px; line-height: 1.65; color: var(--text-secondary); flex: 1; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 1.4rem;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-tertiary);
  transition: color 0.25s ease;
}
.card-link .icon-sm { transition: transform 0.25s var(--ease-out); }
.topic-card:hover .card-link { color: var(--blue-light); }
.topic-card:hover .card-link .icon-sm { transform: translateX(4px); }

/* ==========================================================================
   LEARNING HUB
   ========================================================================== */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.course-card {
  display: flex;
  flex-direction: column;
  padding: 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}
.course-card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.38);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.12);
}

.course-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 1.2rem;
}
.level {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}
.level-beg { color: #4ade80; background: rgba(74, 222, 128, 0.10); border: 1px solid rgba(74, 222, 128, 0.28); }
.level-int { color: var(--blue-light); background: rgba(96, 165, 250, 0.10); border: 1px solid rgba(96, 165, 250, 0.28); }
.level-adv { color: #c084fc; background: rgba(192, 132, 252, 0.10); border: 1px solid rgba(192, 132, 252, 0.28); }

.soon-chip {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--text-tertiary);
  border: 1px dashed var(--border-strong);
}

.course-card h3 {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
.course-card > p { font-size: 13.5px; line-height: 1.6; color: var(--text-secondary); flex: 1; }

.course-meta {
  display: flex;
  gap: 16px;
  margin: 1.1rem 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-tertiary);
}
.course-meta span { display: inline-flex; align-items: center; gap: 6px; }

.progress {
  height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--grad);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.7);
  animation: progress-glow 2.6s ease-in-out infinite;
}
@keyframes progress-glow {
  0%, 100% { opacity: 0.75; }
  50%      { opacity: 1; }
}
.progress-note {
  margin-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.learning-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 3.2rem;
}
.learning-cta p { color: var(--text-secondary); font-size: 15px; }

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.service-card {
  position: relative;
  padding: 2.4rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}
.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(96, 165, 250, 0.38);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.42), 0 0 46px rgba(99, 102, 241, 0.13);
}
.service-num {
  position: absolute;
  top: 2.1rem; right: 2.2rem;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-tertiary);
}
.service-icon {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  border-radius: 14px;
  margin-bottom: 1.5rem;
  background: var(--grad);
  color: #fff;
  box-shadow: 0 0 26px rgba(99, 102, 241, 0.45);
}
.service-icon .icon { width: 25px; height: 25px; }
.service-card h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  margin-bottom: 0.6rem;
}
.service-card > p { font-size: 15px; line-height: 1.68; color: var(--text-secondary); }

.feature-list { margin-top: 1.5rem; display: grid; gap: 11px; }
.feature-list li {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
  color: var(--text-secondary);
}
.feature-list .icon-sm { color: var(--blue-light); }

.services-cta { text-align: center; margin-top: 3.2rem; }

/* ==========================================================================
   JOIN OUR NETWORK
   ========================================================================== */
.network-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 4.5rem;
  align-items: start;
}

.perks { margin-top: 2.6rem; display: grid; gap: 1.7rem; }
.perks li { display: flex; gap: 16px; }
.perk-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(139, 92, 246, 0.28);
  background: rgba(139, 92, 246, 0.08);
  color: var(--violet-light);
}
.perk-icon .icon { width: 20px; height: 20px; }
.perks strong {
  display: block;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 600;
  margin-bottom: 3px;
}
.perks p { font-size: 14px; line-height: 1.6; color: var(--text-secondary); }

.form-card {
  padding: 2.2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: rgba(11, 11, 20, 0.55);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}
.form-card::after {
  content: "";
  position: absolute;
  top: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.55), transparent);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.field { display: flex; flex-direction: column; gap: 7px; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.req { color: var(--violet-light); }

.input {
  width: 100%;
  font: inherit;
  font-size: 14.5px;
  color: var(--text-primary);
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.input::placeholder { color: var(--text-tertiary); }
.input:focus {
  outline: none;
  border-color: rgba(96, 165, 250, 0.6);
  background: rgba(255, 255, 255, 0.055);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}
.input.invalid { border-color: rgba(248, 113, 113, 0.65); }
.form-error { margin-top: 12px; font-size: 14px; color: rgba(248, 113, 113, 0.9); }

.select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 2.4rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a5a6b1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 13px center;
  cursor: pointer;
}
.select:invalid { color: var(--text-tertiary); }
.select option { background: var(--bg-elevated); color: var(--text-primary); }

.textarea { resize: vertical; min-height: 108px; line-height: 1.6; }

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.form-note {
  margin-top: 0.95rem;
  font-size: 12.5px;
  text-align: center;
  color: var(--text-tertiary);
}

.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  text-align: center;
  padding: 2.4rem 1rem;
}
.success-icon {
  display: grid;
  place-items: center;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  box-shadow: 0 0 34px rgba(99, 102, 241, 0.55);
}
.form-success h3 { font-family: var(--font-display); font-size: 21px; font-weight: 600; }
.form-success p { font-size: 14.5px; line-height: 1.65; color: var(--text-secondary); max-width: 380px; }

/* ==========================================================================
   PROJECTS & OPEN SOURCE
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.repo-card {
  display: flex;
  flex-direction: column;
  padding: 1.7rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}
.repo-card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.38);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.12);
}
.repo-head {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 0.9rem;
  color: var(--violet-light);
}
.repo-head .icon { width: 19px; height: 19px; }
.repo-name {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-primary);
}
.repo-card > p { font-size: 14px; line-height: 1.65; color: var(--text-secondary); flex: 1; }

.repo-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
}
.repo-meta span { display: inline-flex; align-items: center; gap: 6px; }
.lang-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--lang, var(--blue));
  box-shadow: 0 0 8px var(--lang, var(--blue));
}

.projects-cta { text-align: center; margin-top: 3rem; }

/* ==========================================================================
   NEWSLETTER
   ========================================================================== */
.glow-wrap {
  padding: 1px;
  border-radius: calc(var(--radius-xl) + 1px);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.5), rgba(139, 92, 246, 0.22) 40%, rgba(139, 92, 246, 0.5));
  box-shadow: 0 0 80px rgba(99, 102, 241, 0.14);
}
.newsletter-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--bg-elevated);
  padding: 4.5rem 2rem;
  text-align: center;
}
.newsletter-orbs { position: absolute; inset: 0; pointer-events: none; }
.newsletter-orbs .orb { filter: blur(70px); }
.newsletter-orbs .orb-blue { width: 380px; height: 380px; top: -180px; left: -120px; }
.newsletter-orbs .orb-purple { width: 380px; height: 380px; bottom: -200px; right: -120px; top: auto; }
.newsletter-panel > * { position: relative; z-index: 1; }
.newsletter-panel .lede { max-width: 520px; margin: 0 auto; }

.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 470px;
  margin: 2.1rem auto 0;
}
.newsletter-form .input { flex: 1; }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 2rem 1.8rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}
.contact-card:hover {
  transform: translateY(-5px);
  border-color: rgba(96, 165, 250, 0.38);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.12);
}
.contact-icon {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  margin-bottom: 1.2rem;
  border: 1px solid rgba(96, 165, 250, 0.28);
  background: rgba(96, 165, 250, 0.08);
  color: var(--blue-light);
}
.contact-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.contact-card > p { font-size: 14px; color: var(--text-secondary); flex: 1; }
.contact-link {
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--blue-light);
  transition: color 0.25s ease;
}
a.contact-link:hover { color: var(--fuchsia); }
.contact-link.muted { color: var(--text-tertiary); }

.social-row { display: flex; gap: 10px; margin-top: 1.1rem; }
.social-row a {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s var(--ease-out), box-shadow 0.25s ease;
}
.social-row a:hover {
  color: #fff;
  border-color: rgba(139, 92, 246, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.25);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border);
  background: linear-gradient(to bottom, transparent, rgba(59, 130, 246, 0.035));
  padding: 4.5rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3.5rem;
}
.footer-brand .nav-logo { margin-bottom: 1.1rem; }
.footer-tagline {
  max-width: 300px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 6px;
}
.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.25s ease;
  width: fit-content;
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-tertiary);
}
.footer-slogan {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-secondary);
}
.to-top {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-secondary);
  transition: color 0.25s ease;
}
.to-top:hover { color: var(--text-primary); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1060px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .courses-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid { gap: 3.5rem; }
  .network-grid { gap: 3rem; }
}

@media (max-width: 920px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }

  .section { padding: 6.5rem 0; }
  .section-head { margin-bottom: 3.2rem; }

  .about-grid { grid-template-columns: 1fr; }
  .value-card:nth-child(even) { transform: none; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card { padding: 2rem; }

  .network-grid { grid-template-columns: 1fr; }
  .form-card { max-width: 640px; }

  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  .scroll-hint { display: none; }
}

@media (max-width: 640px) {
  .bento { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .courses-grid { grid-template-columns: 1fr; }

  .hero { padding-top: calc(var(--nav-h) + 4rem); padding-bottom: 5rem; }
  .hero-sub { font-size: 16.5px; }
  .hero-terminal { margin-top: 3.2rem; }
  .terminal-body { font-size: 12.5px; min-height: 200px; }

  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 1.7rem; }

  .newsletter-panel { padding: 3.2rem 1.4rem; }
  .newsletter-form { flex-direction: column; }

  .stats-grid { gap: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2.2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .js .reveal { opacity: 1; transform: none; transition: none; }

  .orb, .pulse-dot, .hero-gradient, .scroll-line, .progress-fill, .cursor {
    animation: none !important;
  }

  .marquee-track {
    animation: none;
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
    row-gap: 12px;
  }
  .marquee-group[aria-hidden="true"] { display: none; }

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}