/* ============================================================
   K3YSTONETECH — Design System
   Premium dark-theme IT portfolio
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors — Deep space dark theme */
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1629;
  --bg-tertiary: #141c33;
  --bg-card: rgba(20, 28, 51, 0.6);
  --bg-card-hover: rgba(30, 42, 72, 0.8);
  --bg-glass: rgba(15, 22, 41, 0.7);

  /* Accent gradients */
  --accent-primary: #3b82f6;
  --accent-secondary: #06b6d4;
  --accent-tertiary: #8b5cf6;
  --accent-warm: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-emerald: #10b981;

  --gradient-primary: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-warm: linear-gradient(135deg, #f59e0b, #f43f5e);
  --gradient-purple: linear-gradient(135deg, #8b5cf6, #ec4899);
  --gradient-emerald: linear-gradient(135deg, #10b981, #06b6d4);
  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #0f1629 40%, #1a1040 70%, #0f1629 100%);

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-accent: #60a5fa;

  /* Borders */
  --border-subtle: rgba(148, 163, 184, 0.08);
  --border-medium: rgba(148, 163, 184, 0.15);
  --border-accent: rgba(59, 130, 246, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.15);
  --shadow-glow-cyan: 0 0 30px rgba(6, 182, 212, 0.15);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --nav-height: 72px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

/* Remove default link styles */
a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.mono {
  font-family: var(--font-mono);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-primary);
  margin-bottom: var(--space-lg);
  padding: var(--space-xs) var(--space-md);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-full);
  width: fit-content;
}

.section__label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.section__title {
  margin-bottom: var(--space-lg);
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

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

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

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn--outline {
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn--outline:hover {
  border-color: var(--accent-primary);
  background: rgba(59, 130, 246, 0.08);
  transform: translateY(-2px);
}

.btn--ghost {
  color: var(--text-accent);
  padding: 0.5rem 1rem;
}

.btn--ghost:hover {
  background: rgba(59, 130, 246, 0.08);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-slow);
  display: flex;
  align-items: center;
}

.nav--scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  z-index: 1001;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.9rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.nav__logo-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.nav__logo-text span {
  color: var(--accent-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
  color: var(--text-primary);
}

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

.nav__cta {
  margin-left: var(--space-md);
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: 1001;
  padding: var(--space-sm);
}

.nav__hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.nav__hamburger--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger--open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.nav__mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(30px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
}

.nav__mobile-menu--open {
  display: flex;
}

.nav__mobile-menu .nav__link {
  font-size: 1.5rem;
  font-weight: 600;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-5xl) 0;
}

/* Animated gradient background */
.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

/* Grid overlay */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
}

/* Floating orbs */
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 1;
  animation: float-orb 12s ease-in-out infinite;
}

.hero__orb--1 {
  width: 400px;
  height: 400px;
  background: rgba(59, 130, 246, 0.12);
  top: 10%;
  left: 15%;
  animation-delay: 0s;
}

.hero__orb--2 {
  width: 350px;
  height: 350px;
  background: rgba(139, 92, 246, 0.1);
  top: 40%;
  right: 10%;
  animation-delay: -4s;
}

.hero__orb--3 {
  width: 250px;
  height: 250px;
  background: rgba(6, 182, 212, 0.08);
  bottom: 10%;
  left: 40%;
  animation-delay: -8s;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 30px) scale(0.95); }
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.4rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-emerald);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-mono);
}

.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--space-xl);
  letter-spacing: -0.04em;
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  margin-top: var(--space-4xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  font-weight: 500;
  margin-top: 0.25rem;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about__text p {
  margin-bottom: var(--space-lg);
  font-size: 1.05rem;
}

.about__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.about__highlight {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.about__highlight:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.about__highlight-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.about__highlight-icon--blue {
  background: rgba(59, 130, 246, 0.12);
}

.about__highlight-icon--green {
  background: rgba(16, 185, 129, 0.12);
}

.about__highlight-icon--purple {
  background: rgba(139, 92, 246, 0.12);
}

.about__highlight h4 {
  margin-bottom: 0.3rem;
}

.about__highlight p {
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

/* ============================================================
   PRODUCTS SECTION
   ============================================================ */
.products__vertical {
  margin-bottom: var(--space-4xl);
}

.products__vertical:last-child {
  margin-bottom: 0;
}

.products__vertical-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.products__vertical-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.products__vertical-icon--commerce {
  background: rgba(245, 158, 11, 0.12);
}

.products__vertical-icon--security {
  background: rgba(59, 130, 246, 0.12);
}

.products__vertical-icon--events {
  background: rgba(244, 63, 94, 0.12);
}

.products__vertical-name {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  font-weight: 600;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.product-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-slow);
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.product-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

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

.product-card--commerce::before {
  background: var(--gradient-warm);
}

.product-card--security::before {
  background: var(--gradient-primary);
}

.product-card--events::before {
  background: var(--gradient-purple);
}

.product-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.product-card__logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.product-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
}

.product-card__name {
  font-size: 1.2rem;
  font-weight: 700;
}

.product-card__domain {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  margin-top: 0.1rem;
}

.product-card__live-badge {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-emerald);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

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

.product-card__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.product-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.product-card__feature {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.product-card__feature::before {
  content: '→';
  color: var(--accent-primary);
  font-weight: 700;
  font-size: 0.75rem;
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

.product-card__tech {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.product-card__tech-badge {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.12);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap var(--transition-fast);
}

.product-card__link:hover {
  gap: 0.6rem;
}

/* ============================================================
   BLOCKS / PLATFORM SECTION
   ============================================================ */
.platform__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.platform__visual {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.platform__visual::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2), rgba(6, 182, 212, 0.2));
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.platform__visual:hover::before {
  opacity: 1;
}

.platform__diagram {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.platform__layer {
  padding: var(--space-md);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  transition: all var(--transition-base);
}

.platform__layer:last-child {
  margin-bottom: 0;
}

.platform__layer:hover {
  border-color: var(--border-accent);
  background: rgba(59, 130, 246, 0.04);
}

.platform__layer-header {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.platform__layer-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.platform__layer-item {
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.1);
}

.platform__text h2 {
  margin-bottom: var(--space-lg);
}

.platform__text p {
  margin-bottom: var(--space-lg);
}

.platform__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.platform__stat {
  text-align: center;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.platform__stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.platform__stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 0.25rem;
  font-family: var(--font-mono);
}

/* ============================================================
   TECH STACK SECTION
   ============================================================ */
.tech__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.tech-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  text-align: center;
}

.tech-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.tech-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.08);
}

.tech-card__name {
  font-weight: 700;
  font-size: 0.95rem;
}

.tech-card__desc {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  position: relative;
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.service-card:hover::after {
  opacity: 1;
}

.service-card:nth-child(1)::after { background: var(--gradient-primary); }
.service-card:nth-child(2)::after { background: var(--gradient-purple); }
.service-card:nth-child(3)::after { background: var(--gradient-emerald); }

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.service-card__icon--dev   { background: rgba(59, 130, 246, 0.12); }
.service-card__icon--saas  { background: rgba(139, 92, 246, 0.12); }
.service-card__icon--consult { background: rgba(16, 185, 129, 0.12); }

.service-card h3 {
  margin-bottom: var(--space-md);
}

.service-card p {
  margin-bottom: var(--space-lg);
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.service-card__list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.service-card__list li::before {
  content: '✓';
  color: var(--accent-emerald);
  font-weight: 700;
  font-size: 0.75rem;
}

/* ============================================================
   LABS SECTION
   ============================================================ */
.labs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.lab-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  opacity: 0.7;
}

.lab-card:hover {
  opacity: 1;
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.lab-card__domain {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.lab-card__desc {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.lab-card__badge {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  color: var(--accent-warm);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.contact__info h2 {
  margin-bottom: var(--space-md);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact__detail-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.contact__detail-text h4 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.contact__detail-text p,
.contact__detail-text a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact__detail-text a:hover {
  color: var(--accent-primary);
}

/* Contact form */
.contact__form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.contact__form-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form__submit {
  width: 100%;
  margin-top: var(--space-md);
}

.form__status {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: none;
}

.form__status--success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
}

.form__status--error {
  display: block;
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.2);
  color: var(--accent-rose);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand p {
  font-size: 0.9rem;
  margin-top: var(--space-md);
  max-width: 300px;
}

.footer__startup-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.4rem 0.8rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-warm);
  margin-top: var(--space-lg);
}

.footer__col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-lg);
}

.footer__col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.3rem 0;
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--accent-primary);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.footer__bottom a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__bottom a:hover {
  color: var(--accent-primary);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 300ms; }
.reveal--delay-4 { transition-delay: 400ms; }
.reveal--delay-5 { transition-delay: 500ms; }
.reveal--delay-6 { transition-delay: 600ms; }

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children--visible > *:nth-child(1) { transition-delay: 50ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(2) { transition-delay: 100ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(3) { transition-delay: 150ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(4) { transition-delay: 200ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(5) { transition-delay: 250ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(6) { transition-delay: 300ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(7) { transition-delay: 350ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(8) { transition-delay: 400ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(9) { transition-delay: 450ms; opacity: 1; transform: none; }
.stagger-children--visible > *:nth-child(10) { transition-delay: 500ms; opacity: 1; transform: none; }

/* ============================================================
   DIVIDER / SECTION SEPARATOR
   ============================================================ */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
  margin: 0;
  border: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .about__grid,
  .platform__content,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .hero__stats {
    gap: var(--space-xl);
  }

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

@media (max-width: 768px) {
  .section {
    padding: var(--space-3xl) 0;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl);
  }

  .hero__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero__stats {
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
  }

  .hero__actions {
    flex-direction: column;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .platform__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

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

  .labs__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .tech__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .hero__stat-value {
    font-size: 1.75rem;
  }
}