/* ============================================================
   TECHNESTORS — Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  /* Colors */
  --color-bg:           #050816;
  --color-bg-2:         #0a0f2c;
  --color-surface:      rgba(255, 255, 255, 0.04);
  --color-surface-hover:rgba(255, 255, 255, 0.08);
  --color-border:       rgba(255, 255, 255, 0.08);
  --color-border-glow:  rgba(0, 212, 255, 0.3);

  /* Brand Gradient */
  --gradient-brand:     linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
  --gradient-brand-2:   linear-gradient(135deg, #0ea5e9 0%, #7b2ff7 50%, #ec4899 100%);
  --gradient-text:      linear-gradient(135deg, #00d4ff, #7b2ff7);
  --gradient-glow:      linear-gradient(135deg, rgba(0,212,255,0.15), rgba(123,47,247,0.15));

  /* Accent Colors */
  --color-cyan:         #00d4ff;
  --color-violet:       #7b2ff7;
  --color-teal:         #0ea5e9;
  --color-pink:         #ec4899;
  --color-green:        #10b981;
  --color-orange:       #f59e0b;

  /* Text */
  --text-primary:       #ffffff;
  --text-secondary:     #94a3b8;
  --text-muted:         #64748b;

  /* Typography */
  --font-display:       'Space Grotesk', sans-serif;
  --font-body:          'Inter', sans-serif;
  --font-mono:          'JetBrains Mono', monospace;

  /* Font Sizes */
  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;
  --text-5xl:   3rem;
  --text-6xl:   3.75rem;
  --text-7xl:   4.5rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-glow-cyan:   0 0 40px rgba(0, 212, 255, 0.25);
  --shadow-glow-violet: 0 0 40px rgba(123, 47, 247, 0.25);
  --shadow-card:        0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-card-hover:  0 24px 64px rgba(0, 0, 0, 0.6);

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-base:   0.3s ease;
  --transition-slow:   0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1280px;
  --nav-height:    80px;
}

/* ── Light Theme Variables ─────────────────────────────────── */
[data-theme="light"] {
  /* Backgrounds */
  --color-bg:           #f0f4ff;
  --color-bg-2:         #e8eeff;
  --color-surface:      rgba(255, 255, 255, 0.80);
  --color-surface-hover:rgba(255, 255, 255, 0.95);
  --color-border:       rgba(10, 20, 60, 0.10);
  --color-border-glow:  rgba(0, 150, 220, 0.35);

  /* Brand gradient — slightly richer for light bg */
  --gradient-brand:     linear-gradient(135deg, #0099cc 0%, #6b21d4 100%);
  --gradient-brand-2:   linear-gradient(135deg, #0284c7 0%, #7c3aed 50%, #db2777 100%);
  --gradient-text:      linear-gradient(135deg, #0099cc, #6b21d4);
  --gradient-glow:      linear-gradient(135deg, rgba(0,153,204,0.08), rgba(107,33,212,0.08));

  /* Accent colors — slightly deeper for contrast on white */
  --color-cyan:         #0099cc;
  --color-violet:       #6b21d4;
  --color-teal:         #0284c7;
  --color-pink:         #db2777;
  --color-green:        #059669;
  --color-orange:       #d97706;

  /* Text */
  --text-primary:       #0d1117;
  --text-secondary:     #374151;
  --text-muted:         #6b7280;

  /* Shadows — softer, visible on light bg */
  --shadow-glow-cyan:   0 0 40px rgba(0, 153, 204, 0.18);
  --shadow-glow-violet: 0 0 40px rgba(107, 33, 212, 0.18);
  --shadow-card:        0 4px 24px rgba(10, 20, 60, 0.10);
  --shadow-card-hover:  0 16px 48px rgba(10, 20, 60, 0.18);
}

/* ── Smooth global theme transition ───────────────────────── */
html {
  transition:
    background-color 0.4s ease,
    color 0.4s ease;
}

*, *::before, *::after {
  transition:
    background-color 0.4s ease,
    border-color 0.4s ease,
    color 0.3s ease,
    box-shadow 0.4s ease;
}

/* Exclude transforms/opacity from the global transition (prevents animation lag) */
.btn, .glass-card, .tilt-card,
.navbar, .nav-link, .btn-primary, .btn-outline,
.service-card, .why-card, .testimonial-card,
.product-mockup, .social-link, .footer-link {
  transition:
    background-color 0.4s ease,
    border-color 0.4s ease,
    color 0.3s ease,
    box-shadow 0.4s ease,
    transform var(--transition-spring),
    opacity var(--transition-base);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-cyan), var(--color-violet));
  border-radius: var(--radius-full);
}

/* ── Selection ─────────────────────────────────────────────── */
::selection {
  background: rgba(0, 212, 255, 0.2);
  color: var(--color-cyan);
}

/* ── Typography ────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl)); }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  color: var(--text-secondary);
  line-height: 1.75;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-cyan);
  letter-spacing: 0.05em;
}

/* ── Layout ────────────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.section {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
  position: relative;
}

.section-sm {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
}

/* ── Gradient Text ─────────────────────────────────────────── */
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-2 {
  background: var(--gradient-brand-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Section Label ─────────────────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.section-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-cyan);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

/* ── Section Header ────────────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-16);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition-spring);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.btn-primary {
  background: var(--gradient-brand);
  color: white;
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3), 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-primary::before {
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.5), 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

.btn-outline::before {
  background: var(--gradient-glow);
}

.btn-outline:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
}

.btn-lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
}

/* ── Glass Card ────────────────────────────────────────────── */
.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: inherit;
}

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

.glass-card:hover {
  border-color: var(--color-border-glow);
  box-shadow: var(--shadow-card-hover), var(--shadow-glow-cyan);
  transform: translateY(-6px);
}

/* ── Glow Orbs (background decoration) ────────────────────── */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.glow-orb-cyan {
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2), transparent 70%);
}

.glow-orb-violet {
  background: radial-gradient(circle, rgba(123, 47, 247, 0.2), transparent 70%);
}

.glow-orb-pink {
  background: radial-gradient(circle, rgba(236, 72, 153, 0.15), transparent 70%);
}

/* ── Tag / Badge ───────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.tag-cyan   { background: rgba(0,212,255,0.1);  color: var(--color-cyan);   border: 1px solid rgba(0,212,255,0.2); }
.tag-violet { background: rgba(123,47,247,0.1); color: var(--color-violet); border: 1px solid rgba(123,47,247,0.2); }
.tag-green  { background: rgba(16,185,129,0.1); color: var(--color-green);  border: 1px solid rgba(16,185,129,0.2); }
.tag-orange { background: rgba(245,158,11,0.1); color: var(--color-orange); border: 1px solid rgba(245,158,11,0.2); }
.tag-pink   { background: rgba(236,72,153,0.1); color: var(--color-pink);   border: 1px solid rgba(236,72,153,0.2); }

/* ── Divider ───────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-8) 0;
}

/* ── Icon Box ──────────────────────────────────────────────── */
.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.icon-box-cyan   { background: rgba(0,212,255,0.1);  border: 1px solid rgba(0,212,255,0.2); }
.icon-box-violet { background: rgba(123,47,247,0.1); border: 1px solid rgba(123,47,247,0.2); }
.icon-box-green  { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.2); }
.icon-box-orange { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.2); }
.icon-box-pink   { background: rgba(236,72,153,0.1); border: 1px solid rgba(236,72,153,0.2); }

/* ── Grid Utilities ────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

/* ── Flex Utilities ────────────────────────────────────────── */
.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col     { display: flex; flex-direction: column; }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* ── Text Utilities ────────────────────────────────────────── */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-muted  { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

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

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 70px;
  }

  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .section {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .section-header {
    margin-bottom: var(--space-10);
  }
}

@media (max-width: 480px) {
  .btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
  }
}

/* ── Light Mode — Hero stays DARK so 3D animation is visible ── */
/* Three.js uses AdditiveBlending — particles are invisible on   */
/* light backgrounds. Keep hero dark; rest of page is light.     */
[data-theme="light"] #hero {
  background: linear-gradient(135deg, #060a1a 0%, #0d1240 50%, #08122a 100%);
}

/* Keep the dark overlay as-is in light mode (don't soften it) */
[data-theme="light"] #hero > div[style*="radial-gradient"] {
  background: radial-gradient(ellipse 100% 80% at 50% 50%,
    rgba(5,8,22,0.25) 0%,
    rgba(5,8,22,0.75) 100%) !important;
}

/* Hero text — white on dark hero background */
[data-theme="light"] .hero-title { color: #ffffff; }
[data-theme="light"] .hero-subtitle { color: rgba(255,255,255,0.80); }
[data-theme="light"] .hero-subtitle strong { color: #ffffff !important; }

/* Navbar — pure white in light mode (no transparency — dark hero bleeds through) */
[data-theme="light"] .navbar {
  background: #ffffff;
  border-bottom: 1px solid rgba(10, 20, 60, 0.08);
  box-shadow: 0 2px 20px rgba(10, 20, 60, 0.06);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

[data-theme="light"] .navbar.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 24px rgba(10, 20, 60, 0.10);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* Hero buttons — always white in light mode because hero bg is dark */
[data-theme="light"] #hero .btn-outline {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.55);
}

[data-theme="light"] #hero .btn-outline:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
}

[data-theme="light"] #hero .hero-eyebrow {
  color: var(--color-cyan);
}

[data-theme="light"] #hero .hero-tags .tag {
  color: rgba(255, 255, 255, 0.85);
}

[data-theme="light"] #hero .scroll-indicator-text {
  color: rgba(255, 255, 255, 0.6);
}

[data-theme="light"] #hero .scroll-indicator-line,
[data-theme="light"] #hero .scroll-indicator-dot {
  background: rgba(255, 255, 255, 0.4);
}