/* ═══════════════════════════════════════════════════════════
   WindCalc Pro — Design System
   shadcn-inspired zinc neutral theme with cyan accent
   ═══════════════════════════════════════════════════════════ */

/* ─── Tokens ─── */
:root,
[data-theme="light"] {
  --bg: #fafafa;
  --bg-subtle: #f4f4f5;
  --fg: #09090b;
  --fg-muted: #71717a;
  --card: #ffffff;
  --card-hover: #fafafa;
  --border: #e4e4e7;
  --border-hover: #d4d4d8;
  --input: #ffffff;
  --input-border: #d4d4d8;
  --ring: #22d3ee;
  --primary: #18181b;
  --primary-fg: #fafafa;
  --accent: #22d3ee;
  --accent-fg: #083344;
  --accent-subtle: #ecfeff;
  --success: #22c55e;
  --success-subtle: #f0fdf4;
  --warning: #f59e0b;
  --warning-subtle: #fffbeb;
  --danger: #ef4444;
  --danger-subtle: #fef2f2;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-ar: 'Cairo', 'Inter', sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #09090b;
  --bg-subtle: #18181b;
  --fg: #fafafa;
  --fg-muted: #a1a1aa;
  --card: #18181b;
  --card-hover: #27272a;
  --border: #27272a;
  --border-hover: #3f3f46;
  --input: #18181b;
  --input-border: #3f3f46;
  --ring: #22d3ee;
  --primary: #fafafa;
  --primary-fg: #18181b;
  --accent: #22d3ee;
  --accent-fg: #ecfeff;
  --accent-subtle: rgba(34,211,238,0.1);
  --success: #4ade80;
  --success-subtle: rgba(34,197,94,0.1);
  --warning: #fbbf24;
  --warning-subtle: rgba(245,158,11,0.1);
  --danger: #f87171;
  --danger-subtle: rgba(239,68,68,0.1);
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
  color-scheme: dark;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

html[dir="rtl"] body { font-family: var(--font-ar); }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-muted); }

/* ═══════════════════ HEADER ═══════════════════ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--card) 85%, transparent);
  backdrop-filter: blur(12px) saturate(1.8);
  -webkit-backdrop-filter: blur(12px) saturate(1.8);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 40px;
  height: 40px;
  color: var(--fg);
  flex-shrink: 0;
}

.logo svg { width: 100%; height: 100%; }

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

.logo:hover .blade {
  animation: spin-slow 3s linear infinite;
  transform-origin: 20px 20px;
}

.wordmark {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.pro-badge {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 2px 6px;
  border-radius: 4px;
  vertical-align: top;
  position: relative;
  top: 1px;
}

.tagline {
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.3;
}

.made-by {
  font-size: 11px;
  color: var(--fg-muted);
  line-height: 1.2;
  margin-top: 2px;
}

.made-by a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.made-by a:hover { text-decoration: underline; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ═══════════════════ BUTTONS ═══════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 36px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--fg);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
}

.btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-fg);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: color-mix(in oklab, var(--primary) 85%, var(--accent));
  border-color: transparent;
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--bg-subtle);
}

.btn-sm { height: 30px; padding: 0 10px; font-size: 12px; }
.btn-lg {
  width: 100%;
  height: 44px;
  font-size: 14px;
  border-radius: var(--radius);
  margin-top: 8px;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--fg-muted);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease;
}

.icon-btn:hover {
  background: var(--bg-subtle);
  color: var(--fg);
}

/* Theme toggle icons */
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }

/* ═══════════════════ TABS ═══════════════════ */
.tabs-nav {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 65px;
  z-index: 90;
}

.tabs-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 2px;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.tabs-inner::-webkit-scrollbar { display: none; }

.tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  border: none;
  background: transparent;
  color: var(--fg-muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 150ms ease, border-color 150ms ease;
  position: relative;
}

.tab:hover { color: var(--fg); }

.tab.active {
  color: var(--fg);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

.tab svg { opacity: 0.5; flex-shrink: 0; }
.tab.active svg { opacity: 1; color: var(--accent); }

/* ═══════════════════ MAIN ═══════════════════ */
.main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px 40px;
}

.tab-content { display: none; }
.tab-content.active {
  display: block;
  animation: fade-in 300ms var(--ease);
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════ GRID LAYOUTS ═══════════════════ */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ═══════════════════ CARDS ═══════════════════ */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px 0;
}

.card-header h2 {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body { padding: 16px 20px 20px; }

/* ═══════════════════ FORMS ═══════════════════ */
.field { margin-bottom: 12px; }

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--fg-muted);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

input, select {
  width: 100%;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  background: var(--input);
  color: var(--fg);
  font-family: inherit;
  font-size: 13px;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}

input::placeholder { color: var(--fg-muted); opacity: 0.5; }

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.input-group {
  display: flex;
  gap: 8px;
}

.input-group input { flex: 1; }
.input-group .btn { flex-shrink: 0; }

.field-hint {
  font-size: 11px;
  color: var(--fg-muted);
  margin-top: 4px;
  opacity: 0.7;
  font-family: var(--font-mono);
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-muted);
  margin-bottom: 12px;
}

.separator {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.footnote {
  font-size: 11px;
  color: var(--fg-muted);
  margin-top: 12px;
  text-align: center;
  opacity: 0.6;
}

/* ═══════════════════ SEARCH RESULTS ═══════════════════ */
.search-results {
  margin-top: 8px;
  display: grid;
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
}

.result-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  font-family: inherit;
  font-size: 13px;
  color: var(--fg);
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease;
}

.result-item:hover {
  background: var(--bg-subtle);
  border-color: var(--accent);
}

.result-item small {
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ═══════════════════ MAP ═══════════════════ */
#map {
  height: 400px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.status-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-family: var(--font-mono);
}

/* ═══════════════════ COLLAPSIBLE ═══════════════════ */
.collapsible {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-subtle);
  margin-bottom: 12px;
}

.collapsible > summary {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--fg-muted);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.collapsible > summary::-webkit-details-marker { display: none; }

.collapsible > summary::before {
  content: '';
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E");
  background-size: contain;
  transition: transform 200ms ease;
  flex-shrink: 0;
}

.collapsible[open] > summary::before {
  transform: rotate(90deg);
}

.collapsible-body {
  padding: 4px 14px 14px;
}

/* ═══════════════════ METRICS GRID ═══════════════════ */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.metrics-2col {
  grid-template-columns: repeat(2, 1fr);
}

.metric-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color 200ms ease, box-shadow 200ms ease;
  animation: rise-in 400ms var(--ease) both;
}

.metric-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.metric-card .metric-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.metric-card .metric-value {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.metric-card .metric-unit {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-muted);
  margin-left: 2px;
}

.metric-card .metric-sub {
  font-size: 11px;
  color: var(--fg-muted);
  margin-top: 4px;
  font-family: var(--font-mono);
}

/* Metric card accent variants */
.metric-card[data-accent="cyan"] { border-left: 3px solid var(--accent); }
.metric-card[data-accent="green"] { border-left: 3px solid var(--success); }
.metric-card[data-accent="amber"] { border-left: 3px solid var(--warning); }
.metric-card[data-accent="red"] { border-left: 3px solid var(--danger); }

/* Staggered animations */
.metric-card:nth-child(1) { animation-delay: 0ms; }
.metric-card:nth-child(2) { animation-delay: 40ms; }
.metric-card:nth-child(3) { animation-delay: 80ms; }
.metric-card:nth-child(4) { animation-delay: 120ms; }
.metric-card:nth-child(5) { animation-delay: 160ms; }
.metric-card:nth-child(6) { animation-delay: 200ms; }
.metric-card:nth-child(7) { animation-delay: 240ms; }
.metric-card:nth-child(8) { animation-delay: 280ms; }

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

/* ═══════════════════ BADGES ═══════════════════ */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.badge-dot.low { background: var(--warning); }
.badge-dot.offline { background: var(--danger); }

/* ═══════════════════ CODE BLOCK ═══════════════════ */
.code-block {
  background: #09090b;
  color: #a1a1aa;
  border-radius: var(--radius);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  overflow: auto;
  max-height: 300px;
  white-space: pre-wrap;
  word-break: break-all;
}

[data-theme="dark"] .code-block {
  background: #000;
  border: 1px solid var(--border);
}

/* ═══════════════════ CANVAS CHARTS ═══════════════════ */
canvas {
  width: 100% !important;
  border-radius: var(--radius);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
}

/* ═══════════════════ CONVERTER ═══════════════════ */
.convert-results {
  margin-top: 12px;
  display: grid;
  gap: 6px;
}

.convert-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
}

.convert-row .cv-label {
  color: var(--fg-muted);
  font-size: 12px;
}

.convert-row .cv-value {
  font-weight: 700;
  font-family: var(--font-mono);
}

/* ═══════════════════ BEAUFORT TABLE ═══════════════════ */
.beaufort-table {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
}

.beaufort-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
}

.beaufort-num {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-weight: 800;
  font-size: 12px;
  flex-shrink: 0;
}

.beaufort-info { line-height: 1.4; }
.beaufort-info strong { display: block; font-size: 12px; }
.beaufort-info span { color: var(--fg-muted); font-size: 11px; font-family: var(--font-mono); }

/* ═══════════════════ FOOTER ═══════════════════ */
.footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--fg-muted);
  font-size: 12px;
  border-top: 1px solid var(--border);
  margin-top: 20px;
}

.footer-brand { margin-bottom: 8px; }

.footer-aleppo {
  font-size: 14px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 4px;
}

.footer-link { margin-bottom: 4px; }

.footer-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.footer-link a:hover { text-decoration: underline; }

.footer-data { opacity: 0.6; }

/* ═══════════════════ RTL ═══════════════════ */
html[dir="rtl"] .header-inner { flex-direction: row-reverse; }
html[dir="rtl"] .logo-group { flex-direction: row-reverse; }
html[dir="rtl"] .tabs-inner { flex-direction: row-reverse; }
html[dir="rtl"] .result-item { text-align: right; }
html[dir="rtl"] .metric-card[data-accent] { border-left: none; border-right: 3px solid; }
html[dir="rtl"] .metric-card[data-accent="cyan"] { border-right-color: var(--accent); }
html[dir="rtl"] .metric-card[data-accent="green"] { border-right-color: var(--success); }
html[dir="rtl"] .metric-card[data-accent="amber"] { border-right-color: var(--warning); }
html[dir="rtl"] .metric-card[data-accent="red"] { border-right-color: var(--danger); }
html[dir="rtl"] select {
  background-position: left 12px center;
  padding-left: 32px;
  padding-right: 12px;
}

/* ═══════════════════ RESPONSIVE ═══════════════════ */
@media (max-width: 1024px) {
  .grid-2col { grid-template-columns: 1fr; }
  .grid-3col { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .header-inner { padding: 10px 16px; }
  .main { padding: 12px 16px 32px; }
  .tabs-inner { padding: 0 16px; }
  .tab { padding: 10px 12px; font-size: 12px; }
  .tab span { display: none; }
  .tab svg { opacity: 1; }
  .grid-2 { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr; }
  .metrics-2col { grid-template-columns: 1fr; }
  .wordmark { font-size: 17px; }
  .tagline { font-size: 11px; }
  #map { height: 280px; }
  .card-header { padding: 12px 16px 0; }
  .card-body { padding: 12px 16px 16px; }
  .metric-card .metric-value { font-size: 20px; }
  .beaufort-table { grid-template-columns: 1fr; }
}

/* ═══════════════════ PRINT ═══════════════════ */
@media print {
  .header, .tabs-nav, .footer, .btn, .collapsible, .search-results { display: none !important; }
  .tab-content { display: block !important; }
  .card { break-inside: avoid; box-shadow: none; border: 1px solid #ccc; }
  body { background: #fff; }
}

/* ═══════════════════ LOADING SKELETON ═══════════════════ */
.skeleton {
  background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--border) 50%, var(--bg-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ═══════════════════ RESULTS CARD SPECIAL ═══════════════════ */
.results-card {
  transition: opacity 300ms ease, transform 300ms ease;
}

/* ─── Leaflet dark mode ─── */
[data-theme="dark"] .leaflet-tile {
  filter: invert(1) hue-rotate(180deg) brightness(0.95) contrast(0.9);
}

[data-theme="dark"] .leaflet-control-attribution {
  background: var(--card) !important;
  color: var(--fg-muted) !important;
}

[data-theme="dark"] .leaflet-control-attribution a {
  color: var(--accent) !important;
}