/* ==========================================================================
   Disha Safety, Skills & Engineering Institute (DSEI)
   Core Design System & Global Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Mukta:wght@600;700;800&family=Plus+Jakarta+Sans:wght@500;600;700;800&family=Tiro+Devanagari+Hindi:ital@0;1&display=swap');

:root {
  /* Brand Palette */
  --primary-950: #071326;
  --primary-900: #0A1E3C;
  --primary-800: #0F2D59;
  --primary-700: #16407D;
  --primary-600: #1D54A4;
  --primary-500: #2563EB;
  
  /* Safety Amber & Accent Orange */
  --accent-600: #D97706;
  --accent-500: #F59E0B;
  --accent-400: #FBBF24;
  --safety-orange: #FF6F00;
  --safety-orange-dark: #E65100;
  
  /* Green / Success / Environmental */
  --safety-green: #0D9488;
  --safety-green-dark: #0F766E;
  --success: #10B981;
  
  /* Neutral Slate */
  --slate-900: #0F172A;
  --slate-800: #1E293B;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748B;
  --slate-400: #94A3B8;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --slate-50:  #F8FAFC;
  --white:     #FFFFFF;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-hindi: 'Tiro Devanagari Hindi', 'Noto Sans Devanagari', 'Mukta', sans-serif;

  /* Shadows & Elevation */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
  --shadow-gold: 0 10px 25px -5px rgba(245, 158, 11, 0.35);

  /* Transitions & Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--slate-700);
  background-color: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary-900);
  line-height: 1.25;
  font-weight: 700;
}

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

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

ul, ol {
  list-style: none;
}

input, button, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: none;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.container-wide {
  width: 100%;
  max-width: 1360px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding: 80px 0;
}

.section-sm {
  padding: 50px 0;
}

.section-bg {
  background-color: var(--slate-50);
}

.section-dark {
  background-color: var(--primary-950);
  color: var(--slate-200);
}

.section-dark h2, 
.section-dark h3, 
.section-dark h4 {
  color: var(--white);
}

/* Section Header Styles */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px auto;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.12);
  color: var(--safety-orange-dark);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.section-tag.tag-white {
  background: rgba(255, 255, 255, 0.15);
  color: var(--accent-400);
  border-color: rgba(255, 255, 255, 0.2);
}

.section-title {
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--slate-500);
  line-height: 1.6;
}

.section-dark .section-subtitle {
  color: var(--slate-400);
}

/* Utility Helpers */
.text-safety {
  color: var(--safety-orange);
}

.text-gold {
  color: var(--accent-500);
}

.text-muted {
  color: var(--slate-500);
}

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

.highlight-badge {
  display: inline-block;
  background: #FEF3C7;
  color: #92400E;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
}

/* Grid Utilities */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

@media (max-width: 991px) {
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 36px !important;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    gap: 28px !important;
  }
  .grid-3 {
    gap: 20px !important;
  }
  .form-row-2col {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 40px 0;
  }
  .grid-2 {
    gap: 24px !important;
  }
}

/* Responsive Utilities */
.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}