/* ==========================================================================
   SLN CORPORATE SERVICES - MAIN DESIGN SYSTEM
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette */
  --primary-navy: #0f172a;
  --primary-blue: #1e3a8a;
  --accent-cyan: #06b6d4;
  --accent-teal: #0d9488;
  --accent-teal-light: #ccfbf1;
  --accent-amber: #f59e0b;
  --accent-amber-light: #fef3c7;
  --accent-emerald: #10b981;
  --accent-emerald-light: #d1fae5;

  /* Surface Colors */
  --bg-slate: #0b1329;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --surface-dark: #0f172a;
  --surface-glass: rgba(255, 255, 255, 0.85);
  --surface-glass-dark: rgba(15, 23, 42, 0.85);

  /* Text Colors */
  --text-dark: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  --text-brand: #1e3a8a;

  /* Borders & Shadows */
  --border-light: #e2e8f0;
  --border-cyan: rgba(6, 182, 212, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 25px rgba(6, 182, 212, 0.25);
  --shadow-gold: 0 4px 20px rgba(245, 158, 11, 0.2);

  /* Fonts */
  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;

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

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

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.25;
}

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

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Section Utilities */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-dark {
  background-color: var(--primary-navy);
  color: var(--text-white);
}

.section-dark h1,
.section-dark h2,
.section-dark h3 {
  color: var(--text-white);
}

.section-alt {
  background-color: var(--bg-card-alt);
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background-color: var(--accent-teal-light);
  color: var(--accent-teal);
  margin-bottom: 1rem;
}

.section-tag-dark {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid var(--border-cyan);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  font-weight: 400;
}

.section-dark .section-subtitle {
  color: var(--text-light);
}

/* Gradients */
.text-gradient {
  background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #1e3a8a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-gold {
  background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Glassmorphism Cards */
.glass-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
}

.glass-card-dark {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 15px rgba(6, 182, 212, 0.3); }
  50% { box-shadow: 0 0 30px rgba(6, 182, 212, 0.6); }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}