/* ==========================================================================
   ALTUM SOFTWARE - DESIGN SYSTEM & MAIN STYLES
   ========================================================================== */

:root {
  /* Color Palette - Dark Mode (Default) */
  --bg-primary: #080B11;
  --bg-secondary: #0D121F;
  --bg-tertiary: #131B2E;
  --bg-card: rgba(19, 27, 46, 0.7);
  --bg-card-hover: rgba(26, 37, 63, 0.85);
  --bg-glass: rgba(13, 18, 31, 0.75);
  --bg-glass-card: rgba(255, 255, 255, 0.03);
  --bg-glass-border: rgba(255, 255, 255, 0.08);

  /* Primary & Accent Colors */
  --primary: #3B82F6;
  --primary-glow: rgba(59, 130, 246, 0.4);
  --primary-light: #60A5FA;
  --primary-dark: #1D4ED8;

  --accent-cyan: #06B6D4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.4);
  
  --accent-purple: #8B5CF6;
  --accent-purple-glow: rgba(139, 92, 246, 0.4);

  --accent-emerald: #10B981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.3);

  --accent-amber: #F59E0B;

  /* Text Colors */
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverted: #0F172A;

  /* Border & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-focus: rgba(59, 130, 246, 0.5);
  --border-active: #3B82F6;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #06B6D4 100%);
  --gradient-accent: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
  --gradient-purple: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(59, 130, 246, 0.12), transparent 40%);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.25);
  --shadow-glow-cyan: 0 0 30px rgba(6, 182, 212, 0.25);
  --shadow-glow-purple: 0 0 30px rgba(139, 92, 246, 0.25);

  /* Layout & Spacing */
  --container-max: 1280px;
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #F1F5F9;
  --bg-tertiary: #E2E8F0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(255, 255, 255, 0.82);
  --bg-glass-card: rgba(255, 255, 255, 0.7);
  --bg-glass-border: rgba(0, 0, 0, 0.08);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverted: #F8FAFC;

  --border-subtle: rgba(0, 0, 0, 0.09);
  --border-focus: rgba(59, 130, 246, 0.4);

  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(241, 245, 249, 0.8) 100%);
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(59, 130, 246, 0.08), transparent 40%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.15);
}

/* ==========================================================================
   Base & Resets
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  position: relative;
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 5px;
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.4rem, 5.2vw, 4.1rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.9rem, 3.8vw, 2.9rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.3rem, 2.3vw, 1.7rem);
  letter-spacing: -0.01em;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

/* Container & Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding: 6.5rem 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 4rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--primary-light);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.section-badge i {
  font-size: 0.9rem;
}

.section-title {
  margin-bottom: 1.25rem;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

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

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

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

/* Background Ambient Glows */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: var(--primary-glow);
  top: -100px;
  right: -100px;
}

.glow-2 {
  width: 450px;
  height: 450px;
  background: var(--accent-purple-glow);
  bottom: 10%;
  left: -150px;
}

.glow-3 {
  width: 400px;
  height: 400px;
  background: var(--accent-cyan-glow);
  top: 45%;
  right: -100px;
}

/* Grid & Layout Helpers */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

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

@media (max-width: 768px) {
  .section {
    padding: 4.5rem 0;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}