/* public/style.css - Sistem de design editorial și tematică duală WCAG AAA */
@import url('https://fonts.googleapis.com/css2?family=Geist+Mono:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700;800&family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,600;1,6..72,400&display=swap');

:root {
  /* TEMA ÎNCHISĂ (DARK - DEFAULT) */
  --bg-base: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-surface-subtle: #141e33;
  --border-subtle: #23324d;
  --border-strong: #334155;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --accent-cobalt: #0284c7;
  --accent-cobalt-glow: rgba(2, 132, 199, 0.25);
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.25);
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  
  --code-bg: #030712;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-serif: 'Newsreader', Georgia, serif;
}

html.light {
  /* TEMA DESCHISĂ (LIGHT - WCAG AAA CONFIRM) */
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-subtle: #e2e8f0;
  --border-subtle: #cbd5e1;
  --border-strong: #94a3b8;
  
  --text-primary: #020617;
  --text-secondary: #1e293b;
  --text-muted: #334155;
  
  --accent-cobalt: #0369a1;
  --accent-cobalt-glow: rgba(3, 105, 161, 0.15);
  --accent-amber: #b45309;
  --accent-amber-glow: rgba(180, 83, 9, 0.15);
  --accent-emerald: #047857;
  --accent-rose: #be123c;
  
  --code-bg: #f1f5f9;
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Tipografie proporționată */
.font-mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
}

.font-serif {
  font-family: var(--font-serif);
}

/* Topbar Sticky House Pattern */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--bg-base);
  border-bottom: 1px solid var(--border-subtle);
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  gap: 0.75rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.topbar-scrolled {
  background-color: var(--bg-surface);
  border-bottom-color: var(--border-strong);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.topbar-home {
  flex: 0 0 auto;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.75rem;
}

.nav-link {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-link:hover, .nav-link:focus {
  color: var(--text-primary);
}

.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 5px 8px;
  cursor: pointer;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-surface-elevated);
}

/* Layout containere */
.container-narrow {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.container-wide {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* Carduri și containere de date */
.editorial-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.5rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.editorial-card-elevated {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 1.5rem;
}

.hero-answer {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto 2.5rem;
  padding: 1rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-amber);
  border-radius: 8px;
}

.hero-answer > div {
  display: grid;
  gap: 0.15rem;
}

.hero-answer-verdict {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.35rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-answer-verdict strong {
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.35;
}

.hero-answer strong {
  color: var(--accent-amber);
  font-family: var(--font-mono);
  font-size: 1.35rem;
}

.hero-answer-label {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-answer span:not(.hero-answer-label) {
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.hero-answer p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.hero-photo {
  max-width: 720px;
  margin: 0 auto 3rem;
  padding: 0.75rem;
}

.hero-photo img {
  display: block;
  width: 100%;
  max-height: 360px;
  border-radius: 4px;
  object-fit: cover;
}

.hero-photo figcaption {
  margin-top: 0.65rem;
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.method-page {
  padding-top: 4rem;
  padding-bottom: 5rem;
}

.method-page h1 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
}

.method-page h2 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  font-size: 1.35rem;
}

.method-page p,
.method-page li {
  color: var(--text-secondary);
}

.method-page ul,
.method-page ol {
  display: grid;
  gap: 0.65rem;
  padding-left: 1.25rem;
}

.method-page a {
  color: var(--accent-cobalt);
}

.method-page .method-lead {
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 1.15rem;
}

.method-page .method-note {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--accent-amber);
  background: var(--bg-surface);
  color: var(--text-secondary);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.hidden {
  display: none !important;
}

.era-state {
  color: var(--accent-cobalt);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-align: right;
}

.era-panel {
  padding-top: 0.25rem;
  animation: era-panel-in 0.22s ease-out;
}

@keyframes era-panel-in {
  from { opacity: 0; transform: translateY(0.35rem); }
  to { opacity: 1; transform: translateY(0); }
}

section[id] {
  scroll-margin-top: 64px;
}

/* Glisoare (Sliders) */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-surface-subtle);
  border-radius: 3px;
  outline: none;
  border: 1px solid var(--border-subtle);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-cobalt);
  cursor: pointer;
  border: 2px solid var(--bg-surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Butoane interactive */
.btn-action {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-primary {
  background-color: var(--accent-cobalt);
  color: #ffffff;
  border: 1px solid var(--accent-cobalt);
}

.btn-primary:hover {
  opacity: 0.92;
}

/* Tabele de date */
.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  padding: 0.75rem 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border-subtle);
}

.data-table td {
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

/* Canvas responsiveness */
canvas {
  display: block;
  max-width: 100%;
}

/* Animație puls */
@keyframes soft-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

.anim-pulse {
  animation: soft-pulse 2.5s infinite ease-in-out;
}

.pulse-dot {
  animation: soft-pulse 1.2s infinite ease-in-out;
}

@media (max-width: 700px) {
  .topbar {
    padding: 0.5rem 1rem;
    height: auto;
    min-height: 3.5rem;
    flex-wrap: wrap;
    row-gap: 0.35rem;
  }

  .nav-links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.25rem;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .topbar-home {
    font-size: 0.68rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero-answer {
    grid-template-columns: 1fr;
  }

  .hero-answer p {
    grid-column: auto;
  }

  .era-state {
    max-width: 12rem;
  }
}

/* v1.1.0 additions: inspector, epistemic tags, modals, scope box. */

.assume-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.15rem;
  height: 1.15rem;
  padding: 0;
  margin-left: 0.15rem;
  font-size: 0.7rem;
  line-height: 1;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  cursor: pointer;
  vertical-align: baseline;
}

.assume-btn:hover,
.assume-btn:focus-visible {
  color: var(--accent-cobalt);
  border-color: var(--accent-cobalt);
  outline: none;
}

.status-tag {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--text-secondary);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

.status-observed { color: var(--accent-emerald); border-color: var(--accent-emerald); }
.status-documented_design { color: var(--accent-cobalt); border-color: var(--accent-cobalt); }
.status-derived { color: var(--accent-amber); border-color: var(--accent-amber); }
.status-scenario_assumption { color: var(--text-muted); }
.status-model_output { color: var(--accent-cobalt); }
.status-not_quantified { color: var(--text-muted); font-weight: 400; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background-color: rgba(2, 6, 23, 0.6);
}

.modal-card {
  width: 100%;
  max-width: 34rem;
  max-height: 85vh;
  overflow-y: auto;
  padding: 1.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
}

.modal-card:focus {
  outline: none;
}

.scope-box {
  padding: 1.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
}

.data-table tbody tr[role="button"]:hover {
  background-color: var(--bg-surface-subtle);
}

.data-table tbody tr[role="button"]:focus-visible {
  outline: 2px solid var(--accent-cobalt);
  outline-offset: -2px;
}

.era-panel {
  transition: opacity 0.2s ease;
}

input[type="number"].btn-action {
  width: 100%;
  min-width: 0;
}

#day-preset-select {
  flex: 1 1 200px;
  max-width: 100%;
  min-width: 0;
  text-overflow: ellipsis;
}

@media (max-width: 560px) {
  #backtest-bar-container {
    gap: 0.35rem !important;
  }
}

#day-chart-svg rect[role="button"]:focus-visible {
  outline: 2px solid var(--accent-amber);
  outline-offset: -2px;
}

@media (prefers-reduced-motion: reduce) {
  .pulse-dot {
    animation: none;
  }

  .era-panel {
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }

  * {
    transition-duration: 0.01ms !important;
  }
}