/* SRT 매크로 — 모바일 친화 미니멀 스타일 */
* { box-sizing: border-box; }

:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success-bg: #ecfdf5;
  --success-border: #10b981;
  --success-text: #065f46;
  --error-bg: #fef2f2;
  --error-border: #ef4444;
  --error-text: #991b1b;
  --info-bg: #eff6ff;
  --info-border: #3b82f6;
  --info-text: #1e40af;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.45;
}

.centered {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 16px;
}

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.card.narrow { width: 100%; max-width: 380px; }

h1, h2 { margin: 0 0 10px; }
h2 { font-size: 16px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.hidden { display: none; }
.big { font-size: 17px; margin-top: 8px; }

.row { display: flex; align-items: center; gap: 8px; }
.row.spaced { justify-content: space-between; }
.row.gap > * { flex: 1; }
.grow { flex: 1; }

label {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--muted);
}
label.inline {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  color: var(--text);
}
label span { display: block; margin-bottom: 4px; }
label.inline span { margin: 0; }

input[type=text], input[type=password], input[type=number], input:not([type]), select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

fieldset {
  border: none;
  padding: 0;
  margin: 0 0 16px 0;
}
fieldset legend {
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 8px;
  padding: 0;
}

button {
  cursor: pointer;
  font-size: 15px;
  padding: 11px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  background: #e5e7eb;
  color: var(--text);
}
button.primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
}
button.primary:hover:not(:disabled) { background: var(--primary-dark); }
button.danger {
  background: var(--danger);
  color: #fff;
}
button.ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}
button.small { padding: 6px 10px; font-size: 13px; }
button:disabled { opacity: .5; cursor: not-allowed; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  background: #e5e7eb;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}
.badge.ok {
  background: #dcfce7;
  color: #166534;
}

.status-message {
  margin: 8px 0 10px;
  padding: 10px 12px;
  background: #f9fafb;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-all;
}

.alert {
  padding: 12px;
  border-radius: 8px;
  margin: 10px 0;
  border: 1px solid var(--border);
}
.alert.success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-text);
}
.alert.error {
  background: var(--error-bg);
  border-color: var(--error-border);
  color: var(--error-text);
}
.alert.info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: var(--info-text);
}
.alert.muted {
  background: #f3f4f6;
  color: var(--muted);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: rgba(0,0,0,.06);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
}

/* 열차 리스트 */
.train-list {
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 320px;
  overflow-y: auto;
  background: #fff;
}
.train-list-header {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--muted);
  background: #f9fafb;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
}
.train-row {
  display: grid;
  grid-template-columns: 28px 60px 130px 1fr;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  margin: 0;
  font-size: 13px;
  color: var(--text);
}
.train-row:last-child { border-bottom: none; }
.train-row:hover { background: #f9fafb; }
.train-row:has(input:checked) {
  background: #eff6ff;
}
.train-row .train-num {
  font-weight: 600;
}
.train-row .train-time {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.train-row .train-status {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 11px;
}
.train-row .train-status .ok {
  color: #166534;
  background: #dcfce7;
  padding: 2px 6px;
  border-radius: 4px;
}
.train-row .train-status .ng {
  color: var(--muted);
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 4px;
}

/* 모바일 */
@media (max-width: 540px) {
  .container { padding: 12px; }
  .card { padding: 14px; border-radius: 10px; }
  .row.gap { flex-direction: column; gap: 0; }
  .train-row {
    grid-template-columns: 28px 1fr;
    grid-template-rows: auto auto;
    row-gap: 4px;
  }
  .train-row .train-num { grid-column: 2; grid-row: 1; }
  .train-row .train-time { grid-column: 2; grid-row: 1; text-align: right; }
  .train-row .train-status { grid-column: 1 / -1; grid-row: 2; }
  .train-row input[type=checkbox] { grid-column: 1; grid-row: 1; }
}