/* ============================================================
   Team Overbye Weather Data Portal — styles.css
   Aesthetic: Scientific Dark
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=JetBrains+Mono:wght@400;500&family=DM+Sans:wght@400;500&display=swap');

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  --bg:           #0B1120;
  --surface:      #111827;
  --surface-hover:#141E2F;
  --border:       #1F2937;
  --border-focus: #00D4AA;
  --text-primary: #F0F4FF;
  --text-secondary:#94A3B8;
  --accent:       #00D4AA;
  --accent-dim:   rgba(0, 212, 170, 0.15);
  --accent-glow:  rgba(0, 212, 170, 0.3);
  --warning:      #F59E0B;
  --error:        #EF4444;
  --status-good:  #10B981;
  --status-warn:  #F59E0B;
  --status-bad:   #EF4444;
  --status-idle:  #4B5563;
  --status-loading:#6B7280;

  --font-ui:   'Syne', sans-serif;
  --font-data: 'JetBrains Mono', monospace;
  --font-body: 'DM Sans', sans-serif;

  --radius:    4px;
  --transition:150ms ease;
  --header-h:  56px;
  --bar-h:     72px;
}

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

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
}

/* ── Utilities ──────────────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ── Header ─────────────────────────────────────────────────── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 32px;
}

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

.header-wordmark {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.header-divider {
  display: inline-block;
  width: 1px;
  height: 20px;
  background: var(--border);
}

.header-subtitle {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.pipeline-label {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

.pipeline-dot-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot-label {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

/* ── Status Dots ────────────────────────────────────────────── */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.status-dot.status-good {
  background: var(--status-good);
  box-shadow: 0 0 6px rgba(16, 185, 129, 0.6);
}

.status-dot.status-warn {
  background: var(--status-warn);
  box-shadow: 0 0 6px rgba(245, 158, 11, 0.6);
}

.status-dot.status-bad {
  background: var(--status-bad);
  box-shadow: 0 0 6px rgba(239, 68, 68, 0.6);
}

.status-dot.status-idle {
  background: var(--status-idle);
}

.status-dot.status-loading {
  background: var(--status-loading);
  animation: pulse-dot 1.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ── Main ───────────────────────────────────────────────────── */
#main-content {
  flex: 1;
  margin-top: var(--header-h);
  margin-bottom: var(--bar-h);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── Step Sections ──────────────────────────────────────────── */
.step-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  animation: step-in 220ms ease both;
}

.step-section:last-of-type {
  border-bottom: none;
}

.step-section.hidden {
  display: none !important;
}

.step-section.active {
  display: block;
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.step-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 24px;
}

.step-index {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.step-label {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step-title {
  font-family: var(--font-ui);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* ── Error ──────────────────────────────────────────────────── */
.step-error {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--error);
}

.error-icon {
  font-size: 14px;
  flex-shrink: 0;
}

/* ── Card Grid ──────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  max-width: 720px;
}

/* ── Source & Type Cards ────────────────────────────────────── */
.source-card,
.type-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px;
  cursor: pointer;
  transition:
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  user-select: none;
  position: relative;
  outline: none;
}

.source-card:hover,
.type-card:hover {
  border-color: var(--border-focus);
  background: var(--surface-hover);
  transform: translateY(-1px);
}

.source-card:focus-visible,
.type-card:focus-visible {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.source-card.selected,
.type-card.selected {
  border-color: var(--accent);
  background: var(--surface-hover);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.source-card.selected::after,
.type-card.selected::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(0, 212, 170, 0.7);
}

.card-icon {
  font-size: 36px;
  line-height: 1;
  margin-bottom: 12px;
  display: block;
}

.card-name {
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.card-tag {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.card-desc {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Region Toggle ──────────────────────────────────────────── */
.region-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  width: fit-content;
}

.region-btn {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 8px 20px;
  background: var(--surface);
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  text-transform: uppercase;
}

.region-btn:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.region-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
}

/* ── Quarter Grid ───────────────────────────────────────────── */
.quarter-grid {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 560px;
}

.quarter-grid-header,
.quarter-grid-row {
  display: grid;
  grid-template-columns: 80px repeat(4, 1fr);
}

.quarter-grid-header {
  background: rgba(31, 41, 55, 0.6);
  border-bottom: 1px solid var(--border);
}

.qg-header-cell {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 0;
  text-align: center;
}

.qg-header-cell:first-child {
  padding-left: 16px;
  text-align: left;
}

.quarter-grid-row {
  border-bottom: 1px solid var(--border);
}

.quarter-grid-row:last-child {
  border-bottom: none;
}

.qg-year-cell {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  border-right: 1px solid var(--border);
}

.quarter-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 0;
  border-right: 1px solid var(--border);
  cursor: pointer;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition);
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  user-select: none;
  position: relative;
}

.quarter-cell:last-child {
  border-right: none;
}

.quarter-cell.available:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

.quarter-cell.available {
  color: var(--text-primary);
}

.quarter-cell.selected {
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 500;
}

.quarter-cell.selected::after {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  pointer-events: none;
}

.quarter-cell.unavailable {
  color: var(--border);
  cursor: not-allowed;
  opacity: 0.4;
}

/* ── Month Grid ─────────────────────────────────────────────── */
.month-grid {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 880px;
}

.month-grid-header,
.month-grid-row {
  display: grid;
  grid-template-columns: 72px repeat(12, 1fr);
}

.month-grid-header {
  background: rgba(31, 41, 55, 0.6);
  border-bottom: 1px solid var(--border);
}

.mg-header-cell {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 0;
  text-align: center;
}

.mg-header-cell:first-child {
  padding-left: 14px;
  text-align: left;
}

.month-grid-row {
  border-bottom: 1px solid var(--border);
}

.month-grid-row:last-child {
  border-bottom: none;
}

.mg-year-cell {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 9px 14px;
  display: flex;
  align-items: center;
  border-right: 1px solid var(--border);
}

.month-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px 0;
  border-right: 1px solid var(--border);
  cursor: pointer;
  transition:
    background var(--transition),
    color var(--transition);
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--text-secondary);
  user-select: none;
  position: relative;
}

.month-cell:last-child {
  border-right: none;
}

.month-cell.available {
  color: var(--text-primary);
}

.month-cell.available:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

.month-cell.selected {
  background: var(--accent-dim);
  color: var(--accent);
}

.month-cell.selected::after {
  content: '';
  position: absolute;
  inset: 2px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  pointer-events: none;
}

.month-cell.unavailable {
  color: var(--border);
  cursor: not-allowed;
  opacity: 0.35;
}

/* ── Cycle List ─────────────────────────────────────────────── */
.cycle-list-header {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.cycle-list {
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.cycle-list::-webkit-scrollbar {
  width: 6px;
}

.cycle-list::-webkit-scrollbar-track {
  background: transparent;
}

.cycle-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.cycle-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
  user-select: none;
}

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

.cycle-item:hover {
  background: var(--surface-hover);
}

.cycle-item.selected {
  background: var(--accent-dim);
}

.cycle-checkbox {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border);
  border-radius: 2px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), background var(--transition);
}

.cycle-item.selected .cycle-checkbox {
  border-color: var(--accent);
  background: var(--accent);
}

.cycle-item.selected .cycle-checkbox::after {
  content: '';
  width: 8px;
  height: 6px;
  border-left: 1.5px solid #0B1120;
  border-bottom: 1.5px solid #0B1120;
  transform: rotate(-45deg) translateY(-1px);
  display: block;
}

.cycle-date {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.cycle-utc {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--text-secondary);
  margin-left: auto;
  letter-spacing: 0.06em;
}

/* ── Download Bar ───────────────────────────────────────────── */
#download-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bar-h);
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 100;
}

.download-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 32px;
  gap: 24px;
}

.download-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.download-summary-icon {
  font-size: 18px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.download-summary-text {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.download-summary-text.has-selection {
  color: var(--text-primary);
}

.download-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.download-error {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--error);
  max-width: 320px;
}

.btn-download {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0B1120;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 10px 24px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition:
    background var(--transition),
    opacity var(--transition),
    transform var(--transition);
  white-space: nowrap;
}

.btn-download:hover:not(:disabled) {
  background: #00BFA0;
  transform: translateY(-1px);
}

.btn-download:active:not(:disabled) {
  transform: translateY(0);
}

.btn-download:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.btn-download.loading {
  pointer-events: none;
}

.btn-download-icon {
  font-size: 16px;
  line-height: 1;
}

.btn-download-icon.spinning {
  display: inline-block;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Spinner alternative using CSS border trick */
.spinner-ring {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(11, 17, 32, 0.3);
  border-top-color: #0B1120;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* ── ERA5 Range Selector ────────────────────────────────────── */
.range-selector-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.range-label {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.range-arrow {
  color: var(--text-secondary);
  font-size: 14px;
}

.range-select {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-primary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
}

.range-select:focus {
  border-color: var(--border-focus);
}

.range-apply-btn {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-glow);
  border-radius: var(--radius);
  padding: 6px 14px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.range-apply-btn:hover {
  background: rgba(0, 212, 170, 0.25);
  border-color: var(--accent);
}

/* ── Step 3 Controls (no-selection message) ─────────────────── */
.no-selection-msg {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--text-secondary);
  padding: 24px 0;
}

/* ── Responsive fine-tuning for large screens ───────────────── */
@media (min-width: 1400px) {
  .card-grid {
    max-width: 900px;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}