/* ══════════════════════════════════════════════
   style.css — Shared styles for portfolio pages
   (index.html · portfolio-works.html)
   ══════════════════════════════════════════════ */

/* ── Color Tokens ── */
:root {
  --lavender: #E6E6FA;
  --lavender-mid: #C4B5F4;
  --lavender-dark: #7C6FCD;
  --lavender-deep: #5B4FBE;
  --lavender-bg: #F5F4FF;
  --fg: #1a1a2e;
  --fg-muted: #6b6b80;
  --border: #e8e8f0;
  --card-bg: #ffffff;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 20px;
}

/* ── CSS Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  background: var(--white);
  color: var(--fg);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ── Layout ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 28px; }

/* ── Fade-up animation ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ════════════════════════
   NAV
════════════════════════ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.nav-inner {
  height: 100%; display: flex; align-items: center;
}
.nav-logo {
  font-size: 17px; font-weight: 800;
  letter-spacing: -0.5px; margin-right: 36px; flex-shrink: 0;
  color: var(--lavender-deep);
}
.nav-links { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-link {
  padding: 6px 14px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--fg-muted);
  transition: all .15s; white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--lavender-deep);
  background: var(--lavender);
}
.nav-right { margin-left: auto; display: flex; gap: 8px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border-radius: var(--radius); font-size: 14px; font-weight: 600;
  padding: 9px 20px; cursor: pointer; border: none; transition: all .18s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--lavender-deep); color: var(--white);
}
.btn-primary:hover { background: #4a3fad; }
.btn-outline {
  background: transparent; color: var(--lavender-deep);
  border: 1.5px solid var(--lavender-dark);
}
.btn-outline:hover { background: var(--lavender); }
.btn-ghost {
  background: transparent; color: var(--fg-muted); border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--lavender-bg); color: var(--lavender-deep); }
.btn-pdf-cta {
  background: var(--lavender-deep); color: #fff;
  padding: 12px 24px; font-size: 15px; gap: 8px;
  box-shadow: 0 4px 16px rgba(90,75,200,.30);
  border: none;
}
.btn-pdf-cta:hover {
  background: #4a3fad;
  box-shadow: 0 6px 20px rgba(90,75,200,.45);
  transform: translateY(-2px);
}

/* ════════════════════════
   SECTION COMMON
════════════════════════ */
.section { padding: 80px 0; }
.section-alt { background: var(--lavender-bg); }
.section-dark {
  background: var(--lavender-deep); color: var(--white);
}
.sec-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--lavender-dark);
  margin-bottom: 10px;
}
.section-dark .sec-label { color: var(--lavender-mid); }
.sec-label::before {
  content: ''; width: 18px; height: 2px;
  background: var(--lavender-dark); border-radius: 1px;
}
.section-dark .sec-label::before { background: var(--lavender-mid); }
.sec-h2 {
  font-size: 36px; font-weight: 800; letter-spacing: -1px;
  line-height: 1.15; margin-bottom: 8px;
}
.sec-lead {
  font-size: 16px; color: var(--fg-muted); line-height: 1.65;
}
.section-dark .sec-lead { color: rgba(255,255,255,0.7); }
.sec-header { margin-bottom: 48px; }
.sec-header-row {
  display: flex; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; gap: 16px; margin-bottom: 48px;
}

/* ════════════════════════
   FOOTER
════════════════════════ */
.footer {
  background: var(--fg); color: rgba(255,255,255,0.5);
  padding: 32px 0; font-size: 13px;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
}
.footer-logo { color: var(--white); font-weight: 700; font-size: 15px; }