/* ============================================================================
   design-system/components.css
   Sdílené komponenty: Card, SectionHead, Nav-main (pill), NavDropdown,
   LocationPill, ViewSwitch, Breadcrumb, TooltipTrigger.
   Všechny třídy mají prefix `.ds-` pokud existuje riziko kolize se starším
   CSS (např. `.ds-nav-main` vs. `.main-nav` ze starého header.php).
   ============================================================================ */

/* ============================================================================
   1. Card — universální kontejner
   ============================================================================ */
.card {
  background: var(--bg-surface);
  border-radius: var(--r-lg);
  padding: 26px 28px;
  border: 1px solid var(--line);
  transition: all 0.25s var(--ease);
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

/* v2: caption styl — JetBrains Mono uppercase, jemnější. */
.card-label {
  font-family: var(--caption-font, 'JetBrains Mono', monospace);
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  background: var(--blue-mist);
  color: var(--blue);
  flex-shrink: 0;
}
.card-icon.green { background: rgba(102, 188, 41, 0.12); color: var(--green-deep); }
.card-icon.warm  { background: var(--warm-bg); color: var(--warm); }
.card-icon.red   { background: var(--danger-bg); color: var(--danger); }
.card-icon.gray  { background: var(--bg-elevated); color: var(--ink-muted); }

/* v2: Instrument Serif numerika — větší, plnější, tabular figures.
   Bez "ss01" — slashed/dotted zero do designu nesedí. */
.card-value {
  font-family: var(--font-display); /* Instrument Serif */
  font-size: 56px;
  font-weight: 400;
  color: var(--ink);
  line-height: 1;
  font-feature-settings: "tnum";
  letter-spacing: -.01em;
}
/* v2: jednotka v JetBrains Mono uppercase caption — kontrast k serifovému číslu. */
.card-value-unit {
  font-family: var(--caption-font, 'JetBrains Mono', monospace);
  font-size: 12px;
  color: var(--ink-muted);
  font-weight: 500;
  margin-left: 6px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.card-context {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-muted);
  line-height: 1.5;
}
.card-context strong { color: var(--ink); font-weight: 600; }

.card-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: rgba(102, 188, 41, 0.1);
  color: var(--green-deep);
  font-size: 12px;
  font-weight: 600;
  border-radius: 8px;
  font-feature-settings: "tnum";
}
.card-trend.warn { background: var(--warm-bg); color: var(--warm); }
.card-trend.bad  { background: var(--danger-bg); color: var(--danger); }

/* v2: italická serifová „one-liner" pod hodnotou — vysvětluje data lidsky. */
.card-hint {
  margin-top: 12px;
  font-family: 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.4;
}

@media (max-width: 700px) {
  .card { padding: 20px; border-radius: var(--r-md); }
  .card-value { font-size: 40px; }
}

/* ============================================================================
   2. Section Head
   ============================================================================ */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  gap: 20px;
  flex-wrap: wrap;
}
.section-title {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.section-title em {
  font-style: italic;
  color: var(--green-deep);
  font-weight: 500;
}
.section-sub {
  font-size: 13px;
  color: var(--ink-muted);
  margin-top: 4px;
}

@media (max-width: 700px) {
  .section-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .section-title { font-size: 24px; }
}

/* ============================================================================
   3. Nav main (pill-style) — nová varianta; NEZAHRNUJE starý .main-nav
   ============================================================================ */
.ds-nav-main {
  display: flex;
  gap: 2px;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  padding: 4px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
}
.ds-nav-main a {
  padding: 9px 18px;
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
  font-size: 13.5px;
  border-radius: 22px;
  transition: all 0.2s;
}
.ds-nav-main a.active {
  color: var(--blue);
  background: var(--bg-surface);
  box-shadow: var(--shadow-nav);
  font-weight: 600;
}
.ds-nav-main a:hover:not(.active) { color: var(--blue); }

/* Dropdown indikátor (unicode ▾, ne emoji) */
.ds-nav-main a.has-dropdown::after {
  content: " \25BE";
  font-size: 10px;
  margin-left: 2px;
  opacity: 0.7;
}

/* ============================================================================
   4. Nav Dropdown — 3-sloupcové mega-menu
   ============================================================================ */
.ds-nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: var(--z-nav);
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card-hover);
  padding: 24px 28px;
  min-width: 560px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(140px, 1fr);
  gap: 48px;
}
.ds-nav-dropdown__col h4 {
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--ink-muted);
  margin: 0 0 10px;
}
.ds-nav-dropdown__col a {
  display: block;
  padding: 6px 8px;
  margin: 0 -8px;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.15s;
}
.ds-nav-dropdown__col a:hover {
  color: var(--blue);
  background: var(--blue-mist);
}

/* ============================================================================
   5. Location Pill
   ============================================================================ */
.ds-location-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 12px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 500;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}
.ds-location-pill strong {
  color: var(--ink);
  font-weight: 600;
}
.ds-location-pill .alt {
  color: var(--ink-dim);
}
.ds-location-pill .update {
  color: var(--ink-muted);
  font-size: 12px;
}

/* Live dot s ping animací */
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  position: relative;
  display: inline-block;
  flex-shrink: 0;
}
.live-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--green);
  opacity: 0;
  animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}
@keyframes ping {
  0%          { opacity: 0.5; transform: scale(1); }
  75%, 100%   { opacity: 0;   transform: scale(2); }
}

/* ============================================================================
   6. View Switch
   ============================================================================ */
.view-switch {
  display: inline-flex;
  background: var(--bg-elevated);
  border-radius: 28px;
  padding: 4px;
  border: 1px solid var(--line);
}
.view-switch button,
.view-switch a {
  padding: 7px 14px;
  border: none;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-muted);
  cursor: pointer;
  border-radius: 22px;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  text-decoration: none;
}
.view-switch button.active,
.view-switch a.active {
  background: var(--bg-surface);
  color: var(--ink);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  font-weight: 600;
}

/* ============================================================================
   7. Breadcrumb
   ============================================================================ */
.ds-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-muted);
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.ds-breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
}
.ds-breadcrumb a:hover { color: var(--blue); }
.ds-breadcrumb__sep { opacity: 0.5; }
.ds-breadcrumb__current {
  color: var(--ink);
  font-weight: 500;
}

/* ============================================================================
   8. Tooltip Trigger (pouze spouštěč — panel řeší prompt 6)
   ============================================================================ */
.ds-tooltip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--ink-dim);
  color: var(--ink-dim);
  font-size: 10px;
  line-height: 1;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: help;
  background: transparent;
  padding: 0;
  transition: color 0.15s, border-color 0.15s;
  vertical-align: middle;
}
.ds-tooltip-trigger::before { content: "?"; }
.ds-tooltip-trigger:hover,
.ds-tooltip-trigger:focus {
  color: var(--ink);
  border-color: var(--ink);
  outline: none;
}