@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

:root {
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-primary: #1d1d1f;
  --color-secondary: #6e6e73;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-tag-bg: #e8f0fe;
  --color-tag-text: #1a56db;
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.08);
  --radius-sm: 10px;
  --radius-md: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 52px;
}

.navbar-brand {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.navbar-nav {
  display: flex;
  gap: 24px;
  list-style: none;
}

.navbar-nav a {
  font-size: 13px;
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.navbar-nav a:hover { color: var(--color-accent); }

/* ── Hero ── */
.hero {
  padding: 120px 20px 80px;
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, var(--color-bg) 100%);
}

.hero-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 20%;
  border: 3px solid rgba(255,255,255,0.9);
  box-shadow: 0 8px 32px rgba(0,0,0,0.14);
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.hero-name {
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.05;
  margin-bottom: 12px;
}

.hero-title {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 400;
  color: var(--color-secondary);
  margin-bottom: 28px;
  letter-spacing: -0.3px;
}

.hero-meta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-secondary);
}

.hero-meta-item svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 980px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: scale(1.02);
}

/* ── Layout ── */
.container { max-width: 980px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }

.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

/* ── Card ── */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,0.05);
  transition: box-shadow 0.25s, transform 0.25s;
}

.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* ── Timeline ── */
.timeline { display: flex; flex-direction: column; gap: 16px; }

.timeline-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,0.05);
  transition: box-shadow 0.25s, transform 0.25s;
}

.timeline-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.timeline-company {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.timeline-period {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
  background: #e8f3ff;
  padding: 4px 12px;
  border-radius: 980px;
  white-space: nowrap;
}

.timeline-role {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 2px;
}

.timeline-dept {
  font-size: 13px;
  color: var(--color-secondary);
}

.timeline-sub-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  margin-bottom: 8px;
}

.timeline-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-list li {
  font-size: 14px;
  color: var(--color-primary);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}

.timeline-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.timeline-list.achievement li::before { background: #34c759; }

/* ── Project List ── */
.project-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.project-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s;
}

.project-list-item:last-child { border-bottom: none; }
.project-list-item:hover { background: #f5f5f7; }

.project-list-period {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  min-width: 140px;
}

.project-list-name {
  font-size: 14px;
  color: var(--color-primary);
  line-height: 1.4;
}

/* ── Skills ── */
.skill-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  margin-bottom: 10px;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.skill-tag {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  padding: 5px 14px;
  border-radius: 980px;
}

/* ── Cert ── */
.cert-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.cert-item:last-child { border-bottom: none; }

.cert-date {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  min-width: 72px;
}

.cert-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

/* ── Stats ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 60px;
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,0.05);
}

.stat-number {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--color-accent);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label { font-size: 13px; color: var(--color-secondary); }

/* ── Education ── */
.edu-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.edu-item:last-child { border-bottom: none; }

.edu-period {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  min-width: 130px;
  white-space: nowrap;
}

.edu-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 4px;
}

.edu-dept {
  font-size: 14px;
  color: var(--color-secondary);
  margin-bottom: 8px;
}

.edu-detail { font-size: 13px; color: var(--color-secondary); line-height: 1.6; }

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 40px 20px;
  font-size: 13px;
  color: var(--color-secondary);
  border-top: 1px solid var(--color-border);
  margin-top: 40px;
  background: var(--color-surface);
}

/* ── Animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .navbar-nav { display: none; }
  .hero { padding: 90px 20px 60px; }
  .edu-item { flex-direction: column; gap: 6px; }
  .edu-period { min-width: auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .project-list-item { flex-direction: column; align-items: flex-start; gap: 4px; }
  .project-list-period { min-width: auto; }
}