/* ==========================================================================
   pages/ai-sources.css — Phase 2 (AI Source Map) dashboard view
   BEM scope: .src-page, .src-card, .src-modal, .src-empty, .src-summary,
              .src-stat
   Reuses tokens from tokens.css. No magic colors.
   ========================================================================== */

.src-page {
  padding: 0;
}

/* === Header (title + filter) === */

.src-page__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.src-page__title {
  font-family: var(--fh);
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.src-page__subtitle {
  font-size: 12px;
  color: var(--text-d);
  margin-top: 2px;
}

.src-page__filter {
  display: flex;
  align-items: center;
  gap: 8px;
}

.src-page__filter-label {
  font-size: 11px;
  color: var(--text-d);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.src-page__filter select {
  background: var(--surface);
  border: 1px solid var(--border-m);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text);
  font-family: var(--fb);
  font-size: 13px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.src-page__filter select:hover,
.src-page__filter select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* === Summary stats row === */

.src-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.src-stat {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
  border: 1px solid var(--border-m);
  border-radius: var(--rl);
  padding: 18px;
}

.src-stat__label {
  color: var(--text-d);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.src-stat__value {
  font-family: var(--fh);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.5px;
}

.src-stat__delta {
  font-size: 11px;
  color: var(--text-m);
  margin-top: 6px;
  font-family: var(--fm);
}

.src-stat__delta--up   { color: var(--green); }
.src-stat__delta--down { color: var(--red); }

/* === Cards grid === */

.src-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.src-card {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
  border: 1px solid var(--border-m);
  border-radius: var(--rl);
  padding: 18px;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.src-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-glow), 0 8px 24px var(--accent-glow);
  transform: translateY(-2px);
}

.src-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.src-card__rank {
  background: var(--surface3);
  color: var(--text-m);
  padding: 2px 8px;
  border-radius: 9999px;
  font-family: var(--fm);
  font-size: 11px;
  font-weight: 600;
}

.src-card__rank--top3 {
  background: var(--accent-dim);
  color: var(--accent2);
}

.src-card__domain {
  font-family: var(--fh);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-top: 8px;
  word-break: break-all;
  line-height: 1.3;
}

.src-card__count {
  font-family: var(--fh);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  margin-top: 12px;
  letter-spacing: -0.5px;
  line-height: 1;
}

.src-card__count-label {
  font-size: 10px;
  color: var(--text-d);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* === Engine breakdown bars === */

.src-card__engines {
  display: flex;
  gap: 3px;
  margin-top: 14px;
  height: 4px;
  border-radius: 2px;
  overflow: hidden;
}

.src-card__engine-bar {
  border-radius: 2px;
  min-width: 4px;
}

.src-card__engine-bar--chatgpt    { background: var(--engine-chatgpt); }
.src-card__engine-bar--claude     { background: var(--engine-claude); }
.src-card__engine-bar--gemini     { background: var(--engine-gemini); }
.src-card__engine-bar--perplexity { background: var(--engine-perplexity); }
.src-card__engine-bar--google-ai  { background: var(--engine-google-ai); }
.src-card__engine-bar--tavily     { background: var(--engine-tavily); }
.src-card__engine-bar--other      { background: var(--text-d); }

.src-card__engines-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
  font-size: 10px;
  color: var(--text-d);
}

.src-card__engine-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.src-card__engine-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* === Trend indicator === */

.src-card__trend {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--fm);
  font-size: 11px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 0.5px solid var(--border);
}

.src-card__trend--rising  { color: var(--green); }
.src-card__trend--falling { color: var(--red); }
.src-card__trend--stable  { color: var(--text-d); }

/* === Empty / loading states === */

.src-empty {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-m);
  background: var(--surface);
  border: 1px dashed var(--border-m);
  border-radius: var(--rl);
}

.src-empty__icon {
  font-size: 36px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.src-empty__title {
  font-family: var(--fh);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.src-empty__hint {
  font-size: 13px;
  color: var(--text-d);
}

/* === Detail modal === */

.src-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeIn 0.18s ease;
}

.src-modal.is-open {
  display: flex;
}

.src-modal__panel {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
  border: 1px solid var(--border-m);
  border-radius: var(--rl);
  padding: 24px;
  width: 100%;
  max-width: 640px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
}

.src-modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-m);
  font-size: 20px;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}

.src-modal__close:hover {
  background: var(--surface3);
  color: var(--text);
}

.src-modal__title {
  font-family: var(--fh);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
  word-break: break-all;
  padding-right: 28px;
}

.src-modal__subtitle {
  font-size: 12px;
  color: var(--text-d);
  margin-bottom: 18px;
}

.src-modal__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.src-modal__item {
  background: var(--surface);
  border: 0.5px solid var(--border);
  border-radius: var(--r);
  padding: 12px 14px;
}

.src-modal__item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.src-modal__item-engine {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--fm);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-m);
}

.src-modal__item-engine-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.src-modal__item-when {
  font-size: 11px;
  color: var(--text-d);
  font-family: var(--fm);
}

.src-modal__item-query {
  font-size: 13px;
  color: var(--text);
  margin-top: 8px;
  line-height: 1.4;
}

.src-modal__item-quote {
  font-size: 12px;
  color: var(--text-m);
  font-style: italic;
  margin-top: 8px;
  padding-left: 10px;
  border-left: 2px solid var(--border-m);
  line-height: 1.5;
}