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

:root {
  --bg: #f9f8f6;
  --surface: #ffffff;
  --border: #e8eaed;
  --accent: #2563eb;
  --text-primary: #1a1d23;
  --text-secondary: #6b7280;
  --text-ticker: #374151;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.07);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
  min-height: 100vh;
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.logo {
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-sector {
  font-family: 'Nunito', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  color: #1a1a2e;
}

.logo-map {
  font-family: 'Nunito', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  color: #4f8ef7;
}

.logo-version {
  font-family: 'Nunito', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-left: 1px;
  vertical-align: super;
  line-height: 1;
}

.controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.period-group {
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.period-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}

.period-btn.active {
  background: var(--accent);
  color: #fff;
}

.period-btn:not(.active):hover {
  background: var(--border);
  color: var(--text-primary);
}

.clock {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* ── Grid ── */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 17px;
  padding: 18px;
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  header { flex-wrap: wrap; gap: 8px; padding: 10px 14px; }
  .clock { display: none; }
}

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
  animation: fadeUp 0.4s ease both;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px 8px;
}

.emoji {
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
}

.ko {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.en {
  font-size: 0.72rem;
  color: var(--text-secondary);
  flex: 1;
}

.ticker {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-ticker);
  letter-spacing: 0.03em;
}

.card-img-wrap {
  display: block;
  line-height: 0;
  padding: 6px 10px 10px;
}

.card img {
  width: 100%;
  height: auto;
  display: block;
  min-height: 140px;
  background: var(--bg);
  border-radius: 6px;
}

/* ── Modal ── */
.modal-overlay[hidden] { display: none; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-box {
  background: var(--surface);
  border-radius: 16px;
  width: 100%;
  max-width: 960px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  animation: slideUp 0.2s ease;
}

@keyframes slideUp {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.15s;
  line-height: 1;
}

.modal-close:hover {
  background: var(--border);
  color: var(--text-primary);
}

.modal-img-wrap {
  line-height: 0;
  padding: 14px 14px 10px;
}

.modal-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

.modal-footer {
  padding: 10px 18px 14px;
  text-align: right;
}

.modal-link {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.modal-link:hover {
  text-decoration: underline;
}

/* Error state */
.card.img-error .card-header {
  border-bottom: 1px solid var(--border);
}

.card.img-error .card-img-wrap::after {
  content: '차트를 불러올 수 없습니다';
  display: block;
  text-align: center;
  padding: 40px 0;
  color: var(--text-secondary);
  font-size: 0.8rem;
  background: var(--bg);
}