/* ============================================================
   Afford College — styles.css
   Mobile-first · CSS variables · Flexbox/Grid · no inline styles
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --ink: #14213d;
  --ink-soft: #1d2e52;
  --cream: #faf6ef;
  --paper: #ffffff;
  --accent: #2fa84f;
  --accent-dark: #23833c;
  --accent-tint: #e5f4e9;
  --muted: #5b6677;
  --line: #e6e0d5;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3.5rem;
  --space-xl: 5rem;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px -20px rgba(20,33,61,0.25);
  --shadow-sm: 0 10px 30px -18px rgba(20,33,61,0.25);
  --header-h: 68px;
  --maxw: 1120px;

  --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  margin: 0 0 0.6em;
  color: var(--ink);
}

p { margin: 0 0 1rem; }
a { color: var(--accent-dark); text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.section-pad { padding-block: var(--space-xl) var(--space-lg); }

/* ---------- Eyebrow + titles ---------- */
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 0.9rem;
}
.section-title {
  font-size: clamp(1.9rem, 4.5vw, 2.9rem);
  font-weight: 900;
  margin-bottom: 0.5rem;
}
.section-lede {
  max-width: 56ch;
  color: var(--muted);
  font-size: 1.08rem;
  margin-bottom: var(--space-lg);
}
.accent { color: var(--accent); }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,246,239,0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
}
.brand-mark { color: var(--accent); font-size: 1.3rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 110;
}
.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  position: relative;
  font-weight: 500;
  font-size: 0.98rem;
  color: var(--ink-soft);
  padding: 0.3rem 0;
  transition: color var(--transition);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-list .cta-link {
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
}
.nav-list .cta-link::after { display: none; }
.nav-list .cta-link:hover { background: var(--accent-dark); color: #fff; }

/* ===== Hero ===== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  padding-block: var(--space-xl);
  color: var(--cream);
  background-color: #0e1830;
  overflow: hidden;
}
.hero-inner { position: relative; z-index: 2; }
.hero-inner { position: relative; }
.hero-title {
  max-width: 20ch;
  font-size: clamp(2.3rem, 6.5vw, 4.2rem);
  font-weight: 900;
  color: var(--cream);
  margin-bottom: 1.1rem;
}
.hero-sub {
  max-width: 60ch;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: rgba(250,246,239,0.88);
  margin-bottom: var(--space-md);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(47,168,79,0.55);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(47,168,79,0.6);
}
.btn-ghost {
  background: transparent;
  color: var(--cream);
  border-color: rgba(250,246,239,0.5);
}
.btn-ghost:hover {
  background: rgba(250,246,239,0.12);
  border-color: var(--cream);
  transform: translateY(-2px);
}

/* ===== Problem / stat cards ===== */
.problem { background: var(--cream); }
.stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
/* Problem-section banner photo (with parallax) */
.problem-photo {
  position: relative;
  height: clamp(220px, 34vw, 380px);
  border-radius: var(--radius);
  margin: 0 0 var(--space-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
/* Shared parallax background layer */
.parallax { position: relative; overflow: hidden; }

.parallax-bg {
  position: absolute;
  top: -15%;
  left: 0;
  right: 0;
  height: 130%;               /* extra bleed so translation never shows edges */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  will-change: transform;
  transform: translate3d(0, 0, 0);
}

/* Hero background image */
.hero-bg {
  background-image:
    linear-gradient(160deg, rgba(20,33,61,0.96), rgba(20,33,61,0.72)),
    url("https://images.unsplash.com/photo-1523050854058-8df90110c9f1?auto=format&fit=crop&w=1600&q=80");
}

/* Problem banner background image */
.problem-photo .parallax-bg {
  background-image:
    linear-gradient(160deg, rgba(20,33,61,0.15), rgba(20,33,61,0.05)),
    url("https://images.unsplash.com/photo-1541339907198-e08756dedf3f?auto=format&fit=crop&w=1600&q=80");
}
.stat-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-lg) var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.stat-number {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 3.8rem);
  line-height: 1;
  color: var(--ink);
  margin-bottom: 0.6rem;
}
.stat-number span { font-size: 0.45em; color: var(--accent); }
.stat-card h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.stat-card p { color: var(--muted); margin: 0; font-size: 0.98rem; }
.stat-note {
  max-width: 62ch;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: var(--space-md);
}
.stat-note a { font-weight: 600; }

/* ===== Solutions ===== */
.solutions { background: var(--paper); border-block: 1px solid var(--line); }
.solution-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.solution {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  padding: var(--space-md);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--cream);
  transition: transform var(--transition), border-color var(--transition);
}
.solution:hover { transform: translateY(-3px); border-color: var(--accent); }
.solution-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.6rem;
  color: var(--accent);
  line-height: 1;
}
.solution-body h3 { font-size: 1.45rem; margin-bottom: 0.6rem; }
.solution-body p { color: var(--muted); }
.mini-stat {
  margin: var(--space-md) 0 0;
  padding-top: var(--space-md);
  border-top: 1px dashed var(--line);
}
.mini-stat-value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.9rem;
  color: var(--ink);
  margin-bottom: 0.2rem;
}
.mini-stat figcaption { color: var(--muted); font-size: 0.92rem; }

/* ===== Evidence / resources ===== */
.evidence { background: var(--cream); }
.resource-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.resource-card {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-lg) var(--space-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.resource-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-tint);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
}
.resource-card h3 { font-size: 1.12rem; margin-bottom: 0.4rem; color: var(--ink); }
.resource-card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

/* ===== Call to action ===== */
.action {
  background: var(--ink);
  color: var(--cream);
}
.action .section-title, .action .eyebrow { color: var(--cream); }
.action .eyebrow { color: var(--accent); }
.action .section-lede { color: rgba(250,246,239,0.8); }
.action-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.action-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(250,246,239,0.16);
  border-radius: var(--radius);
  padding: var(--space-lg) var(--space-md);
  transition: transform var(--transition), background var(--transition);
}
.action-card:hover { transform: translateY(-4px); background: rgba(255,255,255,0.09); }
.action-card h3 { color: var(--cream); font-size: 1.25rem; }
.action-card p { color: rgba(250,246,239,0.82); }
.action-card .btn { margin-top: var(--space-sm); }

/* ===== Footer ===== */
.site-footer { background: #0e1830; color: rgba(250,246,239,0.75); }
.footer-inner {
  padding-block: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}
.footer-brand { color: var(--cream); font-size: 1.2rem; }
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-links a { color: rgba(250,246,239,0.8); }
.footer-links a:hover { color: var(--accent); }
.footer-social { margin: 0; }
.footer-social a { color: rgba(250,246,239,0.8); }
.footer-social a:hover { color: var(--accent); }
.footer-disclaimer {
  border-top: 1px solid rgba(250,246,239,0.14);
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  text-align: center;
}
.footer-disclaimer p {
  max-width: 72ch;
  margin: 0 auto 0.6rem;
  font-size: 0.85rem;
  color: rgba(250,246,239,0.55);
}
.footer-disclaimer .copyright { color: rgba(250,246,239,0.45); }

/* ===== Scroll fade-in (reveal) ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.fade-up.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-up { opacity: 1; transform: none; transition: none; }
  .nav-toggle-bar { transition: none; }
}

/* ===== Tablet (>= 640px) ===== */
@media (min-width: 640px) {
  .stat-grid { grid-template-columns: repeat(3, 1fr); }
  .solution-num { grid-column: 1 / 2; }
  .solution { grid-template-columns: 80px 1fr; }
}

/* ===== Desktop (>= 900px) ===== */
@media (min-width: 900px) {
  .container { padding-inline: 2rem; }
  .resource-grid { grid-template-columns: repeat(2, 1fr); }
  .action-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ===== Mobile nav (hamburger) below 768px ===== */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-list {
    position: fixed;
    top: 0; left: 0; right: 0;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
    background: var(--ink);
    height: 100vh;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 105;
  }

@media (max-width: 768px) {
  .hero,
  .problem-photo {
    background-attachment: scroll;  /* avoids jitter/whitespace on mobile */
  }
}
  .nav-list.open { transform: translateY(0); }
  .nav-list .nav-link { color: var(--cream); font-size: 1.3rem; }
  .nav-list .cta-link { background: var(--accent); color: #fff; }

  .nav-toggle.open .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open .nav-toggle-bar:nth-child(2) { opacity: 0; }
  .nav-toggle.open .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}