/* ─────────────────────────────────────────────────────────────────────────────
   Umbria Climate Data Portal — Stylesheet
   Color palette: forest green + sky blue + warm neutrals
───────────────────────────────────────────────────────────────────────────── */

:root {
  --green-dark:   #1a5c38;
  --green-mid:    #2d8653;
  --green-light:  #4caf80;
  --green-pale:   #e8f5ee;
  --blue-dark:    #1565c0;
  --blue-mid:     #1976d2;
  --blue-light:   #42a5f5;
  --blue-pale:    #e3f2fd;
  --sky:          #87ceeb;
  --amber:        #f59e0b;
  --red:          #e53935;
  --bg:           #f4f7f4;
  --surface:      #ffffff;
  --surface2:     #f0f4f0;
  --border:       #dde8dd;
  --text:         #1a2e1a;
  --text-mid:     #3d5c3d;
  --text-muted:   #6b8f6b;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.08);
  --shadow-md:    0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.12);
  --radius:       10px;
  --radius-lg:    16px;
  --transition:   .2s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--green-mid); text-decoration: none; }
a:hover { color: var(--green-dark); text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ── Header ── */
.site-header {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-mid) 60%, var(--blue-dark) 100%);
  color: #fff;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 68px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-shrink: 0;
}
.header-logo .icon {
  width: 40px; height: 40px;
  background: rgba(255,255,255,.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
}
.header-logo h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.2;
}
.header-logo .subtitle {
  font-size: .7rem;
  opacity: .75;
  font-weight: 400;
  display: block;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.header-spacer { flex: 1; }
.header-badge {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 20px;
  padding: .25rem .8rem;
  font-size: .75rem;
  opacity: .85;
}

/* ── Language toggle button ── */
.lang-toggle-btn {
  background: rgba(255,255,255,.15);
  border: 1.5px solid rgba(255,255,255,.35);
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  padding: .2rem .6rem;
  transition: background .15s, transform .1s;
}
.lang-toggle-btn:hover {
  background: rgba(255,255,255,.28);
  transform: scale(1.05);
}

/* ── Navigation tabs ── */
.nav-tabs {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  padding: 0 2rem;
  position: sticky;
  top: 68px;
  z-index: 90;
  box-shadow: var(--shadow-sm);
}
.nav-tabs-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: .25rem;
}
.nav-tab {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .85rem 1.2rem;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  white-space: nowrap;
}
.nav-tab:hover { color: var(--green-mid); }
.nav-tab.active {
  color: var(--green-dark);
  border-bottom-color: var(--green-mid);
  font-weight: 600;
}
.nav-tab .tab-icon { font-size: 1rem; }

/* ── Main content ── */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 2rem 3rem;
}

/* ── Panels (tab sections) ── */
.panel { display: none; }
.panel.active { display: block; }

/* ── Hero section (home) ── */
.hero {
  background: linear-gradient(130deg, var(--green-dark) 0%, var(--green-mid) 45%, #1a6b7a 75%, var(--blue-mid) 100%);
  border-radius: var(--radius-lg);
  color: #fff;
  padding: 3.5rem 2.5rem 3rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  min-height: 220px;
}
.hero-landscape {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 58%;
  max-width: 640px;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  display: block;
}
.hero-content { position: relative; z-index: 1; max-width: 560px; }
.hero h2 { font-size: 2.1rem; font-weight: 800; line-height: 1.2; margin-bottom: .85rem; text-shadow: 0 1px 4px rgba(0,0,0,.2); }
.hero p { font-size: 1rem; opacity: .9; margin-bottom: 1.5rem; line-height: 1.65; }
.hero-ctas { display: flex; gap: .75rem; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .65rem 1.4rem;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn-white {
  background: #fff;
  color: var(--green-dark);
}
.btn-white:hover { background: #f0fdf4; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.15); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.5);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-primary {
  background: var(--green-mid);
  color: #fff;
}
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

/* ── Stat card loading state ── */
.stat-loading {
  color: var(--border) !important;
  animation: stat-pulse 1.6s ease-in-out infinite;
}
@keyframes stat-pulse {
  0%, 100% { opacity: .35; }
  50%       { opacity: 1;   }
}

/* ── Quick-stats cards ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--green-dark); line-height: 1; }
.stat-label { font-size: .8rem; color: var(--text-muted); margin-top: .25rem; text-transform: uppercase; letter-spacing: .04em; }
.stat-icon { font-size: 1.5rem; margin-bottom: .5rem; }

/* ── Scenario / variable detail boxes ── */
.detail-boxes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.detail-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.detail-box-header {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .75rem 1.1rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.detail-box-icon { font-size: 1.1rem; }
.detail-box-header h4 { font-size: .88rem; font-weight: 700; color: var(--text); }
.detail-box-body {
  padding: 1rem 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.detail-loading { font-size: .8rem; color: var(--text-muted); font-style: italic; }

/* Scenario rows */
.detail-scenario {
  display: flex;
  flex-direction: column;
  gap: .15rem;
  padding: .45rem .75rem;
  border-radius: 8px;
  width: 100%;
  border-left: 4px solid transparent;
}
.detail-scen-label { font-size: .85rem; font-weight: 700; }
.detail-scen-desc  { font-size: .75rem; opacity: .75; }
.scen-hist  { background: #e8f5ee; border-color: var(--green-mid); color: var(--green-dark); }
.scen-rcp26 { background: #e3f2fd; border-color: var(--blue-mid);  color: var(--blue-dark);  }
.scen-rcp45 { background: #fff3e0; border-color: #f59e0b;          color: #92400e;            }
.scen-rcp85 { background: #fce4ec; border-color: var(--red);       color: #b71c1c;            }

/* Variable badges */
.detail-var-badge {
  display: inline-flex;
  align-items: center;
  padding: .25rem .65rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 500;
  color: var(--text-mid);
}

/* ── Section header ── */
.section-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.25rem;
}
.section-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
}
.section-header .section-icon {
  width: 36px; height: 36px;
  background: var(--green-pale);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ── Iframe embed panels ── */
.embed-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.embed-toolbar {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.embed-toolbar .traffic-lights {
  display: flex; gap: .4rem;
}
.embed-toolbar .tl {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.tl-red   { background: #ff5f57; }
.tl-amber { background: #febc2e; }
.tl-green { background: #28c840; }
.embed-url {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .3rem .75rem;
  font-size: .78rem;
  color: var(--text-muted);
  font-family: monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.embed-open-btn {
  display: flex; align-items: center; gap: .3rem;
  padding: .3rem .75rem;
  background: var(--green-pale);
  color: var(--green-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}
.embed-open-btn:hover { background: #d4edda; }
.embed-iframe {
  width: 100%;
  height: 680px;
  border: none;
  display: block;
}
.embed-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 400px;
  color: var(--text-muted);
  gap: 1rem;
  padding: 2rem;
  text-align: center;
}
.embed-placeholder .placeholder-icon { font-size: 3.5rem; opacity: .4; }
.embed-placeholder p { max-width: 380px; line-height: 1.5; }
.embed-placeholder code {
  background: var(--surface2);
  padding: .15rem .4rem;
  border-radius: 4px;
  font-family: monospace;
  font-size: .85em;
}

/* ── File download browser ── */
.file-controls {
  display: flex;
  gap: .75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  align-items: center;
}
.file-controls select,
.file-controls input {
  padding: .55rem .9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: .88rem;
  min-width: 140px;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236b8f6b'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2rem;
}
.file-controls select:focus,
.file-controls input:focus {
  outline: 2px solid var(--green-mid);
  border-color: var(--green-mid);
}
.file-controls input[type=text] {
  background-image: none;
  padding-right: .9rem;
  flex: 1;
  min-width: 200px;
}
.files-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}
.file-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.file-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.file-card-header {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
}
.file-icon {
  width: 40px; height: 40px;
  background: var(--blue-pale);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.file-name { font-size: .88rem; font-weight: 700; color: var(--text); font-family: monospace; word-break: break-all; }
.file-desc { font-size: .8rem; color: var(--text-mid); line-height: 1.4; }
.file-meta {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}
.file-badge {
  display: inline-flex;
  align-items: center;
  gap: .2rem;
  padding: .2rem .55rem;
  border-radius: 12px;
  font-size: .72rem;
  font-weight: 600;
  background: var(--green-pale);
  color: var(--green-dark);
}
.file-badge.blue { background: var(--blue-pale); color: var(--blue-dark); }
.file-badge.amber { background: #fef3c7; color: #92400e; }
.file-card-footer {
  margin-top: .25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}
.file-size { font-size: .78rem; color: var(--text-muted); }
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .45rem 1rem;
  background: var(--green-mid);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition);
}
.btn-download:hover { background: var(--green-dark); text-decoration: none; color: #fff; }
.btn-download.disabled {
  background: var(--border);
  color: var(--text-muted);
  cursor: not-allowed;
}
.demo-notice {
  background: #fef3c7;
  border: 1px solid #fcd34d;
  border-radius: var(--radius);
  padding: .75rem 1rem;
  font-size: .85rem;
  color: #92400e;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.files-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 2.5rem;
  font-size: .95rem;
}

/* ── Location query ── */
.query-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 900px) {
  .query-layout { grid-template-columns: 1fr; }
}
#location-map {
  height: 460px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.query-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.coord-inputs {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.coord-inputs h4 { font-size: .95rem; font-weight: 700; margin-bottom: 1rem; color: var(--text); }
.input-row {
  display: flex;
  gap: .75rem;
  margin-bottom: .75rem;
}
.input-group { flex: 1; display: flex; flex-direction: column; gap: .3rem; }
.input-group label { font-size: .78rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
.input-group input {
  padding: .55rem .75rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: .9rem;
  background: var(--surface);
  color: var(--text);
  width: 100%;
  transition: border-color var(--transition);
}
.input-group input:focus { outline: none; border-color: var(--green-mid); }
.query-hint { font-size: .78rem; color: var(--text-muted); margin-bottom: .75rem; }
.btn-query {
  width: 100%;
  padding: .7rem;
  background: var(--green-mid);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
}
.btn-query:hover { background: var(--green-dark); }
.btn-query:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; }
.results-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: none;
}
.results-card.visible { display: block; }
.results-card h4 { font-size: .95rem; font-weight: 700; margin-bottom: 1rem; color: var(--text); }
.result-section {
  border-top: 1px solid var(--border);
  padding: .85rem 0;
}
.result-section:first-of-type { border-top: none; padding-top: 0; }
.result-type {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin-bottom: .4rem;
}
.result-name { font-size: .95rem; font-weight: 700; color: var(--text); margin-bottom: .2rem; }
.result-detail { font-size: .8rem; color: var(--text-mid); line-height: 1.5; }
.result-dist {
  display: inline-flex;
  align-items: center;
  gap: .2rem;
  margin-top: .3rem;
  padding: .2rem .55rem;
  background: var(--green-pale);
  color: var(--green-dark);
  border-radius: 12px;
  font-size: .72rem;
  font-weight: 700;
}
.result-vars {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
  margin-top: .4rem;
}
.result-var {
  padding: .15rem .45rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .7rem;
  color: var(--text-mid);
}
.result-stub {
  font-size: .72rem;
  color: var(--amber);
  font-style: italic;
  margin-top: .25rem;
}

/* ── Query: data groups tree ── */
.result-groups {
  margin: .55rem 0 .35rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}
.result-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .22rem .6rem;
  border-radius: 6px;
  font-size: .72rem;
  background: var(--surface2);
  border: 1px solid var(--border);
}
.result-group.group-hist,
.result-group.group-historical  { background: #e8f5ee; border-color: #b2dfdb; }
.result-group.group-rcp26       { background: #e3f2fd; border-color: #bbdefb; }
.result-group.group-rcp45       { background: #fff3e0; border-color: #ffe0b2; }
.result-group.group-rcp85       { background: #fce4ec; border-color: #f8bbd0; }
.group-label { color: var(--text-mid); font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.group-meta  { display: flex; align-items: center; gap: .4rem; flex-shrink: 0; }
.group-period { color: var(--text-muted); font-style: italic; }
.group-steps  { color: var(--text-muted); font-size: .66rem; }
.result-footer-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-top: .35rem;
  flex-wrap: wrap;
}
.result-total {
  font-size: .72rem;
  color: var(--text-muted);
  font-style: italic;
}

.query-error {
  background: #fff1f1;
  border: 1px solid #fca5a5;
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--red);
  font-size: .85rem;
  display: none;
}
.query-error.visible { display: block; }

/* ── Category colors ── */
.cat-green  { --cat-bg: #e8f5ee; --cat-fg: #1a5c38; }
.cat-blue   { --cat-bg: #e3f2fd; --cat-fg: #1565c0; }
.cat-teal   { --cat-bg: #e0f7fa; --cat-fg: #006064; }
.cat-purple { --cat-bg: #f3e5f5; --cat-fg: #6a1b9a; }
.cat-orange { --cat-bg: #fff3e0; --cat-fg: #e65100; }
.cat-red    { --cat-bg: #fce4ec; --cat-fg: #b71c1c; }
.cat-amber  { --cat-bg: #fff8e1; --cat-fg: #f57f17; }
.cat-grey   { --cat-bg: #f5f5f5; --cat-fg: #424242; }

/* ── Category section header ── */
.cat-section { margin-bottom: 2rem; }
.cat-section-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .65rem 1rem;
  border-radius: var(--radius);
  margin-bottom: .85rem;
  cursor: pointer;
  user-select: none;
  background: var(--cat-bg, var(--surface2));
  border: 1px solid color-mix(in srgb, var(--cat-fg, #999) 20%, transparent);
  transition: opacity var(--transition);
}
.cat-section-header:hover { opacity: .85; }
.cat-section-icon {
  font-size: 1.2rem;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.cat-section-title { font-size: .95rem; font-weight: 700; color: var(--cat-fg, var(--text)); flex: 1; }
.cat-section-count {
  font-size: .75rem;
  background: color-mix(in srgb, var(--cat-fg, #999) 15%, transparent);
  color: var(--cat-fg, var(--text-muted));
  padding: .15rem .55rem;
  border-radius: 10px;
  font-weight: 700;
}
.cat-section-chevron { font-size: .75rem; color: var(--cat-fg, var(--text-muted)); transition: transform var(--transition); }
.cat-section.collapsed .cat-section-chevron { transform: rotate(-90deg); }
.cat-section.collapsed .cat-files-grid { display: none; }

/* ── Meta badges (reuse file-badge, add specific colors) ── */
.badge-ensemble { background: #ede9fe; color: #5b21b6; }
.badge-scenario-historical { background: #e8f5ee; color: #1a5c38; }
.badge-scenario-rcp26 { background: #e3f2fd; color: #1565c0; }
.badge-scenario-rcp45 { background: #fff3e0; color: #e65100; }
.badge-scenario-rcp85 { background: #fce4ec; color: #b71c1c; }
.badge-resolution { background: #f3e5f5; color: #6a1b9a; }
.badge-horizon { background: #fff8e1; color: #f57f17; }
.badge-station { background: #e8f5ee; color: #1a5c38; }
.badge-aggregation { background: #e0f7fa; color: #006064; }
.badge-variable { background: #fce4ec; color: #b71c1c; }
.badge-version { background: var(--surface2); color: var(--text-muted); border: 1px solid var(--border); }

/* ── File controls: active filter chips ── */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: .75rem;
  min-height: 1px;
}
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2rem .65rem;
  background: var(--green-pale);
  border: 1px solid var(--green-light);
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--green-dark);
}
.filter-chip-remove {
  cursor: pointer;
  opacity: .6;
  margin-left: .1rem;
  font-size: .9em;
}
.filter-chip-remove:hover { opacity: 1; }

/* ── Files summary bar ── */
.files-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .65rem 1rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  font-size: .83rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.files-summary strong { color: var(--text); }
.summary-sep { opacity: .35; }

/* ── Chart section ── */
.chart-section-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.25rem;
}
.chart-section-header h3 { font-size: 1.1rem; font-weight: 700; flex: 1; }
.btn-script {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .45rem 1rem;
  background: #f3e5f5;
  color: #6a1b9a;
  border: 1px solid #ce93d8;
  border-radius: 8px;
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.btn-script:hover { background: #e1bee7; }

.chart-source-tabs {
  display: flex;
  gap: .4rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--border);
}
.chart-source-tab {
  padding: .6rem 1.1rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.chart-source-tab:hover { color: var(--green-mid); }
.chart-source-tab.active { color: var(--green-dark); border-bottom-color: var(--green-mid); }

.chart-controls {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.chart-controls-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 640px) { .chart-controls-inner { grid-template-columns: 1fr; } }
.chart-controls-label {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-bottom: .5rem;
}
.chart-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.chart-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .25rem .65rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: .76rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition), border-color var(--transition);
}
.chart-checkbox-label input { display: none; }
.chart-checkbox-label.checked {
  background: var(--green-pale);
  border-color: var(--green-mid);
  color: var(--green-dark);
  font-weight: 700;
}
.chart-checkbox-label.grp-historical.checked { background:#e8f5ee; border-color:var(--green-mid); color:var(--green-dark); }
.chart-checkbox-label.grp-rcp26.checked      { background:#e3f2fd; border-color:var(--blue-mid);  color:var(--blue-dark);  }
.chart-checkbox-label.grp-rcp45.checked      { background:#fff3e0; border-color:#f59e0b;           color:#92400e;           }
.chart-checkbox-label.grp-rcp85.checked      { background:#fce4ec; border-color:var(--red);        color:#b71c1c;           }

.btn-load-charts {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1.4rem;
  background: var(--green-mid);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
}
.btn-load-charts:hover { background: var(--green-dark); }
.btn-load-charts:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; }

.charts-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.chart-card-title {
  padding: .65rem 1rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  font-size: .88rem;
  font-weight: 700;
  color: var(--text);
}
.chart-plot { width: 100%; height: 340px; }
.chart-no-data {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: .88rem;
  font-style: italic;
}
.chart-warn {
  padding: .4rem 1rem;
  background: #fef3c7;
  border-bottom: 1px solid #fcd34d;
  font-size: .78rem;
  color: #92400e;
}

/* ── Footer ── */
.site-footer {
  background: var(--green-dark);
  color: rgba(255,255,255,.7);
  text-align: center;
  padding: 1.5rem 2rem;
  font-size: .8rem;
  margin-top: 3rem;
}
.site-footer a { color: rgba(255,255,255,.85); }
.site-footer .footer-logos { display: flex; align-items: center; justify-content: center; gap: 1.5rem; margin-bottom: .75rem; flex-wrap: wrap; }
.footer-logo-item { opacity: .6; font-weight: 700; font-size: .85rem; letter-spacing: .05em; }

/* ── Loading spinner ── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: none;
}
.spinner.visible { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ── */
@media (max-width: 768px) {
  .site-header { padding: 0 1rem; }
  .header-badge { display: none; }
  .nav-tabs { padding: 0 .5rem; overflow-x: auto; }
  .nav-tab { padding: .85rem .75rem; font-size: .82rem; }
  .main-content { padding: 1rem 1rem 2rem; }
  .hero { padding: 2rem 1.25rem; }
  .hero h2 { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}