/* ================================================================
   SooperOS — Neural Grid Theme
   A cyberpunk-luxe design system for sooperos.com
   ================================================================ */

/* ================================
   0. CUSTOM PROPERTIES
   ================================ */
:root {
  --bg-void: #06060b;
  --bg-surface: #0e0e16;
  --bg-card: #13131e;
  --bg-card-hover: #1a1a2a;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  --cyan: #00e5ff;
  --magenta: #ff2d7b;
  --purple: #7c5cfc;
  --green: #00f593;

  --text: #e2e2ef;
  --text-mid: #9b9bb4;
  --text-dim: #5e5e7a;

  --font-display: 'Syne', sans-serif;
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'Fira Code', monospace;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --container: 1280px;
  --section-pad: clamp(80px, 12vw, 160px);
}

/* ================================
   1. RESET & BASE
   ================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--purple) var(--bg-void);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--purple); border-radius: 3px; }

::selection {
  background: rgba(124, 92, 252, 0.35);
  color: var(--text);
}

body {
  font-family: var(--font-body);
  background: var(--bg-void);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.section {
  padding: var(--section-pad) 0;
  position: relative;
}

/* ================================
   2. TYPOGRAPHY
   ================================ */
.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.section-num {
  color: var(--cyan);
  font-weight: 500;
}

.section-line {
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-mid);
  max-width: 560px;
}

.text-gradient {
  background: linear-gradient(135deg, var(--cyan), var(--purple), var(--magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================
   3. PRELOADER
   ================================ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-void);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.preloader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-inner {
  text-align: center;
}

.preloader-logo {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--cyan);
  margin-bottom: 24px;
  animation: pulse-glow 1.5s ease-in-out infinite;
}

.preloader-bar {
  width: 200px;
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
  margin: 0 auto 16px;
}

.preloader-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  border-radius: 1px;
  animation: loader-fill 1.8s var(--ease-out) forwards;
}

.preloader-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

@keyframes loader-fill {
  to { width: 100%; }
}

@keyframes pulse-glow {
  0%, 100% { text-shadow: 0 0 20px rgba(0, 229, 255, 0.3); }
  50% { text-shadow: 0 0 40px rgba(0, 229, 255, 0.6); }
}

/* ================================
   4. NAVIGATION
   ================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 clamp(20px, 4vw, 48px);
  transition: all 0.4s var(--ease-out);
}

.nav.scrolled {
  background: rgba(6, 6, 11, 0.82);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  z-index: 10;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--bg-void);
}

.nav-logo-text { letter-spacing: -0.02em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mid);
  transition: color 0.3s;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyan);
  border-radius: 1px;
  transition: width 0.3s var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-github {
  color: var(--text-mid);
  transition: color 0.3s;
  display: flex;
}

.nav-github:hover { color: var(--cyan); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  z-index: 10;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: all 0.3s var(--ease-out);
}

.nav-toggle span:nth-child(1) { width: 24px; }
.nav-toggle span:nth-child(2) { width: 16px; }
.nav-toggle span:nth-child(3) { width: 20px; }

.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; width: 0; }
.nav-toggle.open span:nth-child(3) { width: 24px; transform: rotate(-45deg) translate(5px, -5px); }

/* ================================
   5. HERO
   ================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.05);
  margin-bottom: 32px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 245, 147, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(0, 245, 147, 0); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.hero-title-line { display: block; }

.hero-title-accent {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--purple) 50%, var(--magenta) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(1.15rem, 2.5vw, 1.6rem);
  font-weight: 400;
  color: var(--text-mid);
  margin-bottom: 12px;
}

.hero-sub {
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  color: var(--text-dim);
  max-width: 520px;
  margin: 0 auto 40px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: var(--bg-void);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.25);
}

.btn-ghost {
  border: 1px solid var(--border-hover);
  color: var(--text-mid);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.05);
}

.btn-full { width: 100%; justify-content: center; }

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--cyan), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
  50% { opacity: 1; transform: scaleY(1); }
}

.hero-scroll span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* Hero stats strip */
.hero-stats-strip {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 5vw, 64px);
  padding: 24px 20px;
  background: rgba(6, 6, 11, 0.6);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
}

.hero-stat { text-align: center; }

.hero-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
}

.hero-stat-label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
}

/* ================================
   6. MARQUEE
   ================================ */
.marquee {
  padding: 20px 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee-scroll 40s linear infinite;
}

.marquee-track:hover { animation-play-state: paused; }

.marquee-content {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-right: 32px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  white-space: nowrap;
}

.marquee-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--purple);
  flex-shrink: 0;
}

@keyframes marquee-scroll {
  to { transform: translateX(-50%); }
}

/* ================================
   7. ABOUT
   ================================ */
.about { background: var(--bg-void); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-desc {
  font-size: 1.05rem;
  color: var(--text-mid);
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.4s var(--ease-out);
}

.about-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.about-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.08);
  color: var(--accent, var(--cyan));
  margin-bottom: 16px;
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.about-card p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ================================
   8. PROJECTS
   ================================ */
.projects {
  background: var(--bg-surface);
}

.projects-header { margin-bottom: 40px; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: transparent;
  transition: all 0.3s var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-mid);
}

.filter-btn.active {
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
  color: var(--cyan);
}

.projects-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin-bottom: 32px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

/* Project Card */
.project-card {
  position: relative;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.4s var(--ease-out);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--card-accent, var(--cyan)), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.project-card:hover::before { opacity: 1; }

.project-card.hidden {
  display: none;
}

.card-domain {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--card-accent, var(--cyan));
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.12);
  margin-bottom: 16px;
  width: fit-content;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.3;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 16px;
}

.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.card-tech span {
  padding: 3px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.card-actions {
  display: flex;
  gap: 10px;
}

.card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s var(--ease-out);
}

.card-btn-live {
  background: rgba(0, 229, 255, 0.1);
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, 0.2);
  flex: 1;
  justify-content: center;
}

.card-btn-live:hover {
  background: rgba(0, 229, 255, 0.18);
  border-color: rgba(0, 229, 255, 0.4);
  transform: translateY(-1px);
}

.card-btn-gh {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.card-btn-gh:hover {
  color: var(--text);
  border-color: var(--border-hover);
}

.card-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

/* ================================
   9. SOLUTIONS
   ================================ */
.solutions { background: var(--bg-void); }

.solutions-bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.sol-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.sol-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--accent, var(--cyan)) 0%, transparent 70%);
  opacity: 0.04;
  transition: opacity 0.4s;
}

.sol-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.sol-card:hover::after { opacity: 0.08; }

.sol-card--lg {
  grid-column: span 2;
  grid-row: span 2;
  padding: 48px;
}

.sol-card-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent, var(--cyan));
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  opacity: 0.7;
}

.sol-card-icon {
  color: var(--accent, var(--cyan));
  margin-bottom: 20px;
}

.sol-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.sol-card--lg h3 { font-size: 1.8rem; }

.sol-card p {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.sol-card--lg p { font-size: 1rem; max-width: 480px; }

/* ================================
   10. TECH STACK
   ================================ */
.stack { background: var(--bg-surface); }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 48px;
}

.stack-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all 0.3s var(--ease-out);
}

.stack-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.stack-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}

.stack-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
}

.stack-card-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent, var(--cyan));
}

.stack-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 10px;
}

.stack-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent, var(--cyan));
  border-radius: 2px;
  transition: width 1.2s var(--ease-out);
}

.stack-card.in-view .stack-bar-fill {
  width: var(--width);
}

.stack-card-role {
  font-size: 12px;
  color: var(--text-dim);
}

/* Infrastructure */
.stack-infra {
  margin-top: 64px;
  padding: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
}

.stack-infra-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.stack-infra-desc {
  color: var(--text-dim);
  margin-bottom: 28px;
}

.infra-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.infra-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s var(--ease-out);
}

.infra-tag:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.06);
}

.infra-tag em {
  font-style: normal;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* ================================
   11. CONTACT
   ================================ */
.contact { background: var(--bg-void); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-desc {
  font-size: 1.05rem;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-mid);
  font-size: 0.95rem;
  transition: color 0.3s;
}

.contact-link:hover { color: var(--cyan); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-mid);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  transition: all 0.3s var(--ease-out);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
}

/* ================================
   12. FOOTER
   ================================ */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-void);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-dim);
  transition: color 0.3s;
}

.footer-links a:hover { color: var(--cyan); }

/* ================================
   13. ANIMATIONS
   ================================ */
.anim-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.anim-fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

.anim-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.anim-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.about-highlights .about-card:nth-child(1) { transition-delay: 0s; }
.about-highlights .about-card:nth-child(2) { transition-delay: 0.08s; }
.about-highlights .about-card:nth-child(3) { transition-delay: 0.16s; }
.about-highlights .about-card:nth-child(4) { transition-delay: 0.24s; }

.solutions-bento .sol-card:nth-child(1) { transition-delay: 0s; }
.solutions-bento .sol-card:nth-child(2) { transition-delay: 0.06s; }
.solutions-bento .sol-card:nth-child(3) { transition-delay: 0.12s; }
.solutions-bento .sol-card:nth-child(4) { transition-delay: 0.18s; }
.solutions-bento .sol-card:nth-child(5) { transition-delay: 0.24s; }
.solutions-bento .sol-card:nth-child(6) { transition-delay: 0.30s; }

.stack-grid .stack-card:nth-child(1) { transition-delay: 0s; }
.stack-grid .stack-card:nth-child(2) { transition-delay: 0.05s; }
.stack-grid .stack-card:nth-child(3) { transition-delay: 0.1s; }
.stack-grid .stack-card:nth-child(4) { transition-delay: 0.15s; }
.stack-grid .stack-card:nth-child(5) { transition-delay: 0.2s; }
.stack-grid .stack-card:nth-child(6) { transition-delay: 0.25s; }
.stack-grid .stack-card:nth-child(7) { transition-delay: 0.3s; }
.stack-grid .stack-card:nth-child(8) { transition-delay: 0.35s; }

/* Project card entrance */
.project-card {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out),
              background 0.4s var(--ease-out), border-color 0.4s var(--ease-out),
              box-shadow 0.4s var(--ease-out);
}

.project-card.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   14. RESPONSIVE
   ================================ */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .solutions-bento {
    grid-template-columns: 1fr 1fr;
  }

  .sol-card--lg {
    grid-column: span 2;
    grid-row: span 1;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 6, 11, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--ease-out);
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-links .nav-link {
    font-size: 24px;
    font-family: var(--font-display);
    font-weight: 700;
  }

  .nav-toggle { display: flex; }

  .hero-title {
    font-size: clamp(3rem, 14vw, 5rem);
  }

  .hero-stats-strip {
    gap: 16px;
    padding: 16px 12px;
    flex-wrap: wrap;
  }

  .hero-stat-num { font-size: 1.3rem; }

  .hero-scroll { display: none; }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .solutions-bento {
    grid-template-columns: 1fr;
  }

  .sol-card--lg {
    grid-column: span 1;
  }

  .stack-grid {
    grid-template-columns: 1fr;
  }

  .stack-infra {
    padding: 28px;
  }

  .about-highlights {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: clamp(2.5rem, 16vw, 4rem);
  }

  .hero-badge {
    font-size: 11px;
    padding: 6px 14px;
  }

  .btn {
    padding: 12px 22px;
    font-size: 14px;
  }

  .card-actions {
    flex-direction: column;
  }

  .card-btn-live { justify-content: center; }
}