/* ============================================================
   Jennifer Yaya Falanga — Portfolio Stylesheet
   Shared across all pages. Page-specific styles live in
   a <style> block inside each HTML file.
   ============================================================ */

/* ─── Fonts ──────────────────────────────────────────────── */
/*
  area-extended is loaded via Adobe Fonts / Typekit.
  The <link> to https://use.typekit.net/rwl3qku.css is added
  in each HTML <head> alongside Instrument Serif.
  Instrument Serif is loaded from Google Fonts in each HTML <head>.
*/

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

/* ─── Design Tokens ──────────────────────────────────────── */
:root {
  /* Backgrounds (page-specific, overridden per file) */
  --bg-home:    #ffac16;   /* Homepage amber */
  --bg-case:    #F6F4EF;   /* Case study warm white */

  /* Surfaces & borders */
  --surface:    rgba(0,0,0,0.06);
  --border:     rgba(0,0,0,0.15);

  /* Text — dark on light backgrounds */
  --text:       #141413;
  --muted:      #484540;
  --text-inv:   #F9F9F7;   /* Light text when used over dark/amber */

  /* Accent — a deeper amber for detail on white; near-black on amber */
  --accent:     #141413;
  --accent-alt: #553A00;   /* Used for labels/eyebrows on amber bg */

  /* Typography */
  --serif:      'Instrument Serif', Georgia, serif;
  --sans:       'area-extended', 'Helvetica Neue', Arial, sans-serif;

  /* Layout */
  --max:        1160px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.space-after-1-2 {
  margin-bottom: 0.6rem;
}
.space-after {
  margin-bottom: 1.2rem;
}

/* ─── Base ───────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  color: var(--text);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ─── Navigation ─────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 2.5rem;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

/* Homepage nav: amber bg, dark text */
nav.nav-home {
  background: rgba(255,172,22,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
nav.nav-home.scrolled { border-bottom-color: rgba(0,0,0,0.18); }

/* Case study nav: warm white bg, dark text */
nav.nav-case {
  background: rgba(246,244,239,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--text);
}

/* Homepage nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links .cta {
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.45rem 1.1rem;
  border-radius: 2px;
  transition: background var(--transition), color var(--transition);
}
.nav-links .cta:hover { background: var(--text); color: var(--bg-home); }

/* Case study nav — back link */
.nav-back {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--transition), gap var(--transition);
}
.nav-back:hover { color: var(--text); gap: 0.8rem; }
.nav-back::before { content: '←'; }


/* ─── Figma Link ─────────────────────────────────────────────── */
    /* Prototype / Figma CTA button */
    .figma-link {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      font-family: var(--sans);
      font-size: 0.75rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--text);
      border: 1px solid var(--text);
      padding: 0.6rem 1.2rem;
      border-radius: 2px;
      margin-top: 1.2rem;
      transition: background var(--transition), color var(--transition);
    }
    .figma-link:hover { background: var(--text); color: var(--bg-case); }
    .figma-link::after { content: '↗'; }

/* ─── Footer ─────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2.5rem;
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.footer-name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--text);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.footer-links a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text); }

.footer-copy {
  font-size: 0.75rem;
  color: var(--muted);
}

/* ─── Shared Utility ─────────────────────────────────────── */
.section-label {
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 3rem;
  padding-top: 6rem;
  border-top: 1px solid var(--border);
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 1.2rem 1.4rem; }

  footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 1.4rem;
  }
}
