/* =============================================
   SBG BCA COLLEGE — GLOBAL STYLESHEET
   Design System & Tokens
   ============================================= */

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

/* ---- CSS Variables ---- */
:root {
  /* ... existing colors ... */
  --clr-primary:       #1a3a6e;   /* deep navy */
  --clr-primary-light: #2554a0;
  --clr-primary-dark:  #102447;
  --clr-accent:        #e8a020;   /* warm gold */
  --clr-accent-light:  #f5c14e;
  --clr-accent-dark:   #c07d10;

  /* Neutrals */
  --clr-white:   #ffffff;
  --clr-off-white: #f8f7f4;
  --clr-bg:      #f4f6fb;
  --clr-surface: #ffffff;
  --clr-border:  #dde3ef;
  --clr-text:    #1c2333;
  --clr-muted:   #6b7a99;
  --clr-dark:    #0d1626;

  /* Typography */
  --font-body:    'Inter', system-ui, sans-serif;
  --font-heading: 'Poppins', sans-serif;

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.375rem;
  --fs-xl:   1.75rem;
  --fs-2xl:  2.25rem;
  --fs-3xl:  3rem;
  --fs-4xl:  3.75rem;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-14: 3.5rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Radii */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(26,58,110,0.08);
  --shadow-md:  0 4px 16px rgba(26,58,110,0.12);
  --shadow-lg:  0 8px 32px rgba(26,58,110,0.16);
  --shadow-xl:  0 16px 64px rgba(26,58,110,0.2);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Layout */
  --container-max: 1200px;
  --nav-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

/* ---- Section Wrapper ---- */
.section {
  padding-block: var(--sp-20);
}

.section--alt {
  background: var(--clr-off-white);
}

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  margin-bottom: var(--sp-12);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--sp-3);
  position: relative;
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 28px;
  height: 2px;
  background: var(--clr-accent);
  transform: translateY(-50%);
}
.section-eyebrow::before { right: calc(100% + 8px); }
.section-eyebrow::after  { left:  calc(100% + 8px); }

.section-title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  color: var(--clr-primary-dark);
  line-height: 1.25;
  margin-bottom: var(--sp-4);
}

.section-desc {
  font-size: var(--fs-md);
  color: var(--clr-muted);
  max-width: 600px;
  margin-inline: auto;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.7em 1.8em;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: all var(--transition-base);
  white-space: normal;
  text-align: center;
}

.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  box-shadow: 0 4px 16px rgba(26,58,110,0.3);
}
.btn-primary:hover {
  background: var(--clr-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(26,58,110,0.4);
}

.btn-accent {
  background: var(--clr-accent);
  color: var(--clr-dark);
  box-shadow: 0 4px 16px rgba(232,160,32,0.35);
}
.btn-accent:hover {
  background: var(--clr-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232,160,32,0.45);
}

.btn-outline {
  border: 2px solid var(--clr-primary);
  color: var(--clr-primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn-outline-white {
  border: 2px solid var(--clr-white);
  color: var(--clr-white);
  background: transparent;
}
.btn-outline-white:hover {
  background: var(--clr-white);
  color: var(--clr-primary);
}

.btn-lg {
  padding: 0.85em 2.2em;
  font-size: var(--fs-base);
}

/* ---- Stat Badge ---- */
.stat-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: var(--radius-lg);
  padding: var(--sp-4) var(--sp-6);
  color: var(--clr-white);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.stat-badge:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(232,160,32,0.4);
}
.stat-badge strong {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--clr-accent-light);
  line-height: 1;
}
.stat-badge span {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-top: var(--sp-1);
}

/* ---- Card ---- */
.card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

/* ---- Divider ---- */
.divider {
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-light));
  border-radius: var(--radius-full);
  margin-block: var(--sp-4);
}
.divider--center { margin-inline: auto; }

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

/* ---- Flex Helpers ---- */
.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(--sp-4); }
.gap-6 { gap: var(--sp-6); }

/* ---- Tag Chip ---- */
.chip {
  display: inline-block;
  padding: 0.25em 0.75em;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  background: rgba(26,58,110,0.08);
  color: var(--clr-primary);
}

/* ---- Scroll Animation ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.text-white  { color: var(--clr-white); }
.mt-4  { margin-top: var(--sp-4); }
.mt-6  { margin-top: var(--sp-6); }
.mt-8  { margin-top: var(--sp-8); }
.mb-4  { margin-bottom: var(--sp-4); }

/* ---- Font Awesome global alignment ---- */
.fa-solid, .fa-regular, .fa-brands {
  vertical-align: middle;
  line-height: 1;
}

/* ============================================= 
   RESPONSIVE BREAKPOINTS
   ============================================= */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .section { padding-block: var(--sp-16); }
  .section-title { font-size: var(--fs-xl); }
}

@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .container { padding-inline: var(--sp-4); }
  .section { padding-block: var(--sp-12); }
  .section-title { font-size: var(--fs-lg); }
  .section-eyebrow { font-size: var(--fs-xs); }
  .nav-toggle { display: block; }
  
  /* Keep buttons side by side but smaller */
  .flex.gap-4 {
    gap: var(--sp-2);
    flex-wrap: nowrap;
  }
  
  .btn {
    padding: 0.55em 0.9em;
    font-size: 0.7rem;
    flex-shrink: 1;
    min-width: 0;
  }
  
  .btn-lg {
    padding: 0.55em 0.9em;
    font-size: 0.7rem;
  }
}

@media (max-width: 480px) {
  :root { --nav-height: 64px; }
}