/* =========================================================
   College Corridor Advisory — main.css
   Premium Editorial Design System
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Design Tokens ────────────────────────────────────── */
:root {
  /* Palette */
  --navy:         #0B1220;
  --navy-soft:    #111827;
  --navy-mid:     #1E293B;

  --white:        #FFFFFF;
  --ivory:        #F7F4ED;
  --ivory-mid:    #EDE9DF;

  --heading:      #111827;
  --body:         #475569;
  --muted:        #64748B;
  --subtle:       #94A3B8;

  --gold:         #C9A227;
  --gold-dim:     rgba(201,162,39,0.18);
  --gold-border:  rgba(201,162,39,0.35);

  --blue:         #2563EB;
  --blue-hover:   #1D4ED8;
  --blue-dim:     rgba(37,99,235,0.08);

  --border:       #E2E8F0;
  --border-soft:  #EDE9E0;

  /* Typography */
  --font-serif:   'Playfair Display', Georgia, serif;
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;

  /* Font Sizes */
  --fs-xs:    0.6875rem;   /* 11px */
  --fs-sm:    0.8125rem;   /* 13px */
  --fs-base:  0.9375rem;   /* 15px */
  --fs-md:    1.0625rem;   /* 17px */
  --fs-lg:    1.125rem;    /* 18px */
  --fs-xl:    1.25rem;     /* 20px */
  --fs-2xl:   1.5rem;      /* 24px */
  --fs-3xl:   1.875rem;    /* 30px */
  --fs-4xl:   2.25rem;     /* 36px */
  --fs-5xl:   3rem;        /* 48px */
  --fs-6xl:   3.75rem;     /* 60px */
  --fs-7xl:   4.5rem;      /* 72px */

  /* 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-16:  4rem;      --sp-20: 5rem;      --sp-24: 6rem;
  --sp-32:  8rem;

  /* Section padding */
  --section-padding: clamp(5rem, 9vw, 7.5rem);
  --section-padding-sm: clamp(3rem, 6vw, 5rem);

  /* Borders */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;

  /* Shadows — intentionally restrained */
  --shadow-sm:  0 1px 3px rgba(11,18,32,0.06);
  --shadow-md:  0 4px 16px rgba(11,18,32,0.08);
  --shadow-lg:  0 12px 40px rgba(11,18,32,0.10);

  /* Transitions */
  --trans-fast: 200ms ease;
  --trans-base: 350ms ease;
  --trans-slow: 500ms ease;

  /* Layout */
  --max-w:  1280px;
  --nav-h:  72px;

  /* Legacy aliases (keep for other pages that reference these) */
  --clr-bg:           #0B1220;
  --clr-bg-2:         #1C2541;
  --clr-bg-3:         #1E293B;
  --clr-surface:      rgba(255,255,255,0.06);
  --clr-surface-2:    rgba(255,255,255,0.12);
  --clr-border:       rgba(201,162,39,0.3);
  --clr-border-2:     rgba(201,162,39,0.5);
  --clr-slate:        #F8FAFC;
  --clr-slate-mid:    #E2E8F0;
  --clr-slate-dark:   #FFFFFF;
  --clr-slate-dim:    rgba(255,255,255,0.1);
  --clr-bronze:       #C9A227;
  --clr-gold:         #C9A227;
  --clr-bronze-light: #E4BC45;
  --clr-bronze-dark:  #A88420;
  --clr-bronze-dim:   rgba(201,162,39,0.18);
  --clr-blue:         #2563EB;
  --clr-teal:         #38BDF8;
  --clr-green:        #10B981;
  --clr-amber:        #F59E0B;
  --clr-red:          #EF4444;
  --clr-text:         #FFFFFF;
  --clr-text-2:       #CBD5E1;
  --clr-text-muted:   #94A3B8;
  --clr-text-dim:     #64748B;
  --grad-hero:        radial-gradient(circle at 50% 20%, rgba(37,99,235,0.2) 0%, #0B1220 80%);
  --grad-bronze:      linear-gradient(135deg, #C9A227, #E4BC45);
  --grad-slate:       linear-gradient(135deg, #1C2541, #0B1220);
  --grad-card:        linear-gradient(145deg, #1C2541 0%, #0B1220 100%);
  --grad-section:     linear-gradient(180deg, #0B1220 0%, #1C2541 100%);
  --font-heading:     'Inter', system-ui, sans-serif;
  --font-body:        'Inter', system-ui, sans-serif;
  --fs-4xl:           2.25rem;
  --shadow-bronze:    0 8px 28px rgba(201,162,39,0.3);
  --trans-spring:     500ms cubic-bezier(0.34,1.56,0.64,1);
}

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

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--ivory);
  color: var(--body);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ── CLS Stabilization & Image Aspect Ratios ── */
.image-container, .aspect-ratio-box {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  background: rgba(15, 23, 42, 0.05);
}

.college-logo, .inst-logo-card img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.hero-stable-minh {
  min-height: clamp(480px, 60vh, 650px);
}

img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; cursor: pointer; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
[data-modal], .btn, [role="button"] { cursor: pointer; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* ── Heading defaults ─────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.15;
  color: var(--heading);
  letter-spacing: -0.01em;
}

/* Serif variant — apply to specific headings via class */
.serif {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* ── Layout ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.section {
  padding-block: var(--section-padding);
}
.section--sm {
  padding-block: var(--section-padding-sm);
}

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

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; gap: var(--sp-4); }
}

/* ── Typography Utilities ─────────────────────────────── */
.text-center    { text-align: center; }
.text-muted     { color: var(--muted); }
.text-gold      { color: var(--gold); }
.text-navy      { color: var(--navy); }
.text-white     { color: var(--white); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

/* Thin gold rule below eyebrow */
.eyebrow--rule {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}
.eyebrow--rule::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

/* Legacy section-label — keep for other pages */
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: var(--sp-4);
}

.section-heading { max-width: 720px; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.section-heading h2 {
  font-size: var(--fs-4xl);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: var(--sp-4);
  color: var(--heading);
}
.section-heading p {
  font-size: var(--fs-md);
  color: var(--body);
  line-height: 1.7;
}

/* ── Dividers ─────────────────────────────────────────── */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}
.divider--gold {
  background: var(--gold-border);
}

/* ── Utilities ────────────────────────────────────────── */
.disclaimer-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-md);
  padding: var(--sp-5) var(--sp-6);
  font-size: var(--fs-sm);
  color: var(--body);
  line-height: 1.7;
  margin-top: var(--sp-8);
}

.note-block {
  background: rgba(30,41,59,0.04);
  border-left: 3px solid var(--border);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--sp-4) var(--sp-6);
  font-size: var(--fs-sm);
  color: var(--body);
  margin-block: var(--sp-6);
}
.note-block.gold {
  background: var(--gold-dim);
  border-left-color: var(--gold);
}

/* Table */
.data-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.data-table th {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--heading);
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 2px solid var(--border);
  text-align: left;
  background: var(--ivory);
}
.data-table td {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--border);
  color: var(--body);
  vertical-align: middle;
}
.data-table tr:hover td { background: var(--ivory); }
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--white);
  -webkit-overflow-scrolling: touch;
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--fs-xs);
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--muted);
  white-space: nowrap;
  transition: all var(--trans-fast);
}
.tag:hover { border-color: var(--gold); color: var(--gold); }
.tag--gold  { border-color: var(--gold-border); background: var(--gold-dim); color: var(--heading); }
.tag--blue  { border-color: rgba(37,99,235,0.2); background: var(--blue-dim); color: var(--blue); }
.tag--green { border-color: rgba(16,185,129,0.2); background: rgba(16,185,129,0.06); color: #059669; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--ivory); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* Selection */
::selection { background: var(--gold-dim); color: var(--heading); }

/* Focus */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
:target { scroll-margin-top: calc(var(--nav-h) + 1rem); }

/* Responsive */
@media (max-width: 768px) { .hide-mobile  { display: none !important; } }
@media (min-width: 769px) { .hide-desktop { display: none !important; } }

/* Viewport stability */
html, body {
  max-width: 100vw;
  overflow-x: hidden;
}

/* Import Mobile & Desktop Layout Modules */
@import url('mobile.css');
@import url('desktop.css');