/* ==========================================================================
   Tuixent Meteo — shared stylesheet
   Light/dark via [data-theme="dark"] on <html>
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties
   -------------------------------------------------------------------------- */

:root {
  /* Brand */
  --station-color:  #2563eb;
  --station-bg:     rgba(37, 99, 235, 0.015);
  --station-border: rgba(37, 99, 235, 0.08);

  /* Semantic observation colours (used in KPI values + Chart.js) */
  --color-tmax:     #e53e3e;
  --color-tmin:     #0ea5e9;
  --color-tmit:     #f97316;
  --color-rain:     #06b6d4;
  --color-wind:     #d69e2e;
  --color-pressure: #7c3aed;
  --color-sun:      #f59e0b;
  --color-uv:       #a855f7;
  --color-humidity: #14b8a6;
  --color-dewpoint: #06b6d4;
  --color-windspd:  #10b981;
  --color-windgust: #84cc16;
  --color-radiation:#f59e0b;
  --color-heatindex:#f97316;
  --color-windchill:#0ea5e9;
  --color-frost-bg: rgba(14, 165, 233, 0.22);
  --color-frost-txt:#0369a1;

  /* Page & layout */
  --bg-page:        linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
  --bg-card:        #ffffff;
  --bg-card-subtle: #f8fafc;
  --bg-table-head:  #1e293b;
  --bg-hover:       #f1f5f9;

  /* Navbar */
  --bg-navbar:      rgba(255, 255, 255, 0.95);
  --bg-navbar-menu: #ffffff;

  /* Text */
  --text-main:      #1a202c;
  --text-secondary: #2d3748;
  --text-muted:     #718096;
  --text-placeholder:#94a3b8;

  /* Borders & shadows */
  --border-color:   #e2e8f0;
  --border-card:    rgba(226, 232, 240, 0.8);
  --border-container: rgba(255, 255, 255, 0.18);
  --shadow-card:    0 6px 20px rgba(0, 0, 0, 0.1), 0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-container: 0 8px 32px rgba(37, 99, 235, 0.12);
  --shadow-navbar:  0 2px 12px rgba(37, 99, 235, 0.1);
  --shadow-hover:   0 16px 40px rgba(37, 99, 235, 0.18), 0 6px 12px rgba(0, 0, 0, 0.1);
  --chart-grid:     #e2e8f0;

  /* Misc */
  --accent-color:   #2b6cb0;
  --header-end:     #3182ce;
  --success-color:  #38a169;
  --warning-color:  #d69e2e;
  --danger-color:   #e53e3e;
  --border-radius:  12px;
  --border-radius-sm: 8px;

  /* Legacy aliases (kept for backward compat with inline styles) */
  --primary-color:  var(--text-main);
  --white:          var(--bg-card);
  --light-gray:     var(--bg-card-subtle);
}

[data-theme="dark"] {
  --bg-page:        linear-gradient(135deg, #0f1117 0%, #1a1f2e 100%);
  --bg-card:        #1e2433;
  --bg-card-subtle: #252d3d;
  --bg-table-head:  #141824;
  --bg-hover:       #2a3348;

  --bg-navbar:      rgba(15, 17, 23, 0.97);
  --bg-navbar-menu: #1a1f2e;

  --text-main:      #e2e8f0;
  --text-secondary: #cbd5e0;
  --text-muted:     #a0aec0;
  --text-placeholder:#64748b;

  --border-color:   #2d3748;
  --border-card:    rgba(45, 55, 72, 0.9);
  --border-container: rgba(45, 55, 72, 0.5);
  --shadow-card:    0 6px 20px rgba(0, 0, 0, 0.4), 0 2px 6px rgba(0, 0, 0, 0.3);
  --shadow-container: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-navbar:  0 2px 12px rgba(0, 0, 0, 0.4);
  --shadow-hover:   0 16px 40px rgba(0, 0, 0, 0.5), 0 6px 12px rgba(0, 0, 0, 0.4);
  --chart-grid:     #2d3748;

  --accent-color:   #4299e1;
  --header-end:     #2b6cb0;
  --station-color:  #4299e1;
  --station-bg:     rgba(66, 153, 225, 0.08);
  --station-border: rgba(66, 153, 225, 0.15);

  --color-frost-bg: rgba(14, 165, 233, 0.15);
  --color-frost-txt:#38bdf8;

  --primary-color:  var(--text-main);
  --white:          var(--bg-card);
  --light-gray:     var(--bg-card-subtle);
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */

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

body {
  background: var(--bg-page);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.5;
  font-size: 14px;
  padding-top: 60px;
  transition: background 0.3s, color 0.3s;
}

/* --------------------------------------------------------------------------
   3. Navbar
   -------------------------------------------------------------------------- */

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: var(--bg-navbar);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-navbar);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.3s, border-color 0.3s;
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand i { color: var(--station-color); font-size: 1.25rem; }

.navbar-menu {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.navbar-link {
  padding: 0.5rem 0.875rem;
  color: var(--text-main);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.navbar-link:hover { background: rgba(37, 99, 235, 0.08); color: var(--station-color); }
.navbar-link.active { background: var(--station-color); color: #fff; }

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
  padding: 0.25rem;
}

/* Dark mode toggle button */
.dark-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
}
.dark-toggle:hover { color: var(--station-color); border-color: var(--station-color); }
.dark-toggle .icon-sun  { display: none; }
.dark-toggle .icon-moon { display: block; }
[data-theme="dark"] .dark-toggle .icon-sun  { display: block; }
[data-theme="dark"] .dark-toggle .icon-moon { display: none; }

/* --------------------------------------------------------------------------
   4. Layout
   -------------------------------------------------------------------------- */

.main-container {
  max-width: 1200px;
  margin: 1.5rem auto;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-container);
  border: 1px solid var(--border-container);
  transition: background 0.3s, border-color 0.3s;
}

/* --------------------------------------------------------------------------
   5. Page header (gradient banner at top of each page)
   -------------------------------------------------------------------------- */

.page-header {
  background: linear-gradient(135deg, var(--accent-color), var(--header-end));
  color: #fff;
  border-radius: var(--border-radius-sm);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.page-title   { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; }
.page-subtitle { font-size: 0.875rem; opacity: 0.9; }

/* --------------------------------------------------------------------------
   6. Cards & chart containers
   -------------------------------------------------------------------------- */

.chart-container {
  background: var(--bg-card);
  border-radius: var(--border-radius-sm);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-card);
  position: relative;
  overflow: hidden;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.chart-container::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.01), transparent);
  pointer-events: none;
}

.chart-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  letter-spacing: -0.025em;
}

.chart-icon { color: var(--station-color); margin-right: 0.5rem; }

/* 2-column grid for charts */
.charts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.charts-grid .chart-container { margin-bottom: 0; }
.chart-full { grid-column: 1 / -1; }

/* Summary chart box (used in any, arxiu-mes, arxiu-any) */
.chart-box {
  background: var(--bg-card-subtle);
  border-radius: var(--border-radius-sm);
  padding: 1rem;
  border: 1px solid var(--border-color);
  transition: background 0.3s, border-color 0.3s;
}

.chart-box h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

/* Metric / KPI card (used inline → now a class) */
.kpi-card {
  background: var(--bg-card-subtle);
  border-radius: 6px;
  padding: 0.875rem;
  border: 1px solid var(--border-color);
  transition: background 0.3s, border-color 0.3s;
}

.kpi-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.kpi-value {
  font-size: 1.25rem;
  font-weight: 700;
}

.kpi-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

/* Records section wrapper */
.records-section {
  background: var(--bg-card);
  border-radius: var(--border-radius-sm);
  padding: 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-card);
  transition: background 0.3s, border-color 0.3s;
}

.records-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.records-title i { color: var(--station-color); }

/* Section title with bottom border */
.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   7. Tables
   -------------------------------------------------------------------------- */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.data-table th {
  background: var(--bg-table-head);
  color: #fff;
  padding: 0.625rem 0.75rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.75rem;
}

.data-table td {
  padding: 0.5rem 0.75rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  transition: background 0.2s;
}

.data-table tr:hover td { background: var(--bg-hover); }

/* Frost row */
.frost-row td { background: var(--color-frost-bg) !important; color: var(--color-frost-txt); }

/* --------------------------------------------------------------------------
   8. Navigation prev/next (arxiu-mes, arxiu-any)
   -------------------------------------------------------------------------- */

.nav-prev-next {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.2s;
}

.nav-btn:hover { background: rgba(255, 255, 255, 0.25); }

/* --------------------------------------------------------------------------
   9. Footer
   -------------------------------------------------------------------------- */

.site-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  transition: border-color 0.3s, color 0.3s;
}

.site-footer a { color: var(--text-muted); }

/* --------------------------------------------------------------------------
   10. Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {
  body { padding-top: 56px; }

  .navbar-container { padding: 0.625rem 1rem; }
  .navbar-brand { font-size: 1rem; }
  .navbar-toggle { display: block; }

  .navbar-menu {
    position: fixed;
    top: 56px; left: 0; right: 0;
    background: var(--bg-navbar-menu);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-120%);
    transition: transform 0.3s ease, background 0.3s;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-menu.open { transform: translateY(0); }

  .navbar-link { width: 100%; padding: 0.75rem 1rem; border-radius: 4px; }

  .main-container { padding: 0.75rem; margin: 0.5rem; }
  .page-header { padding: 1rem; }
  .page-title { font-size: 1.5rem; }
  .chart-container { padding: 1rem; margin-bottom: 0.75rem; }
  .charts-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .main-container { padding: 0.625rem; margin: 0.25rem; }
  .page-title { font-size: 1.25rem; }
  .chart-container { padding: 0.875rem; margin-bottom: 0.5rem; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
}
