/* ═══════════════════════════════════════════════════════════════
   STYLE.CSS — The Modern Atelier
   Personal portfolio — shared stylesheet
═══════════════════════════════════════════════════════════════ */

/* ── 1. TOKENS ──────────────────────────────────────────────── */
:root {
  --color-bg: #fbfbf9;
  --color-surface: #ffffff;
  --color-green: #2d4739;
  --color-green-tint: #e9edeb;
  --color-text: #333333;
  --color-text-muted: #888888;

  --font-sans: "Instrument Sans", sans-serif;

  --radius-card: 10px;
  --radius-tag: 20px;

  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.08),
    0 4px 12px rgba(0, 0, 0, 0.04);

  --transition: all 0.3s ease-out;

  --max-width: 1100px;
  --gap: 36px;
}

/* ── 2. RESET & BASE ────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ── 3. NAV ─────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  background-color: rgba(251, 251, 249, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-green);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding-bottom: 2px;
}

/* Underline that expands from center */
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1.5px;
  background-color: var(--color-green);
  transition: width 0.25s ease-out;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-green);
}

/* ── 4. HERO ─────────────────────────────────────────────────── */
.hero {
  padding: 100px 48px 88px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-name {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 600;
  color: var(--color-green);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--color-text);
  max-width: 520px;
  line-height: 1.65;
}

/* ── 5. SECTION SHARED ──────────────────────────────────────── */
.section-header {
  margin-bottom: 40px;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-green);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* ── 6. PROJECTS ─────────────────────────────────────────────── */
.projects {
  padding: 20px 48px 96px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--gap);
}

/* ── 7. CARD ─────────────────────────────────────────────────── */
.card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.card--placeholder {
  opacity: 0.65;
  cursor: default;
}

.card--placeholder:hover {
  transform: none;
  box-shadow: var(--shadow-card);
}

/* Card geometric header pattern */
.card-pattern {
  height: 120px;
  background-color: var(--color-green-tint);
  overflow: hidden;
  flex-shrink: 0;
}

.card-pattern svg {
  width: 100%;
  height: 100%;
}

/* Card body */
.card-body {
  padding: 24px 24px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-green);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 18px;
}

/* Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-block;
  background-color: var(--color-green-tint);
  color: var(--color-green);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-tag);
}

/* ── 8. ABOUT ────────────────────────────────────────────────── */
.about {
  background-color: var(--color-green-tint);
  padding: 72px 48px;
}

.about-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.about .section-title {
  margin-bottom: 16px;
}

.about-text {
  font-size: 1.05rem;
  color: var(--color-text);
  max-width: 640px;
  line-height: 1.75;
}

/* ── 9. FOOTER ───────────────────────────────────────────────── */
.footer {
  padding: 32px 48px;
  text-align: center;
  border-top: 1px solid var(--color-green-tint);
}

.footer-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-link {
  color: var(--color-green);
  position: relative;
  padding-bottom: 1px;
}

.footer-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background-color: var(--color-green);
  transition: width 0.25s ease-out;
}

.footer-link:hover::after {
  width: 100%;
}

/* ── 10. RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav {
    padding: 16px 24px;
  }

  .nav-links {
    gap: 24px;
  }

  .hero {
    padding: 64px 24px 56px;
  }

  .projects {
    padding: 20px 24px 72px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about {
    padding: 56px 24px;
  }

  .footer {
    padding: 28px 24px;
  }
}