/* ================================================================
   YouTube Tag Finder — Frontend Styles
   ================================================================ */

:root {
  --ytf-bg:          #0f0f0f;
  --ytf-surface:     #1a1a1a;
  --ytf-surface2:    #242424;
  --ytf-border:      #333;
  --ytf-red:         #ff0000;
  --ytf-red-hover:   #cc0000;
  --ytf-text:        #f1f1f1;
  --ytf-text-muted:  #aaa;
  --ytf-tag-bg:      #272727;
  --ytf-tag-hover:   #333;
  --ytf-radius:      10px;
  --ytf-radius-sm:   6px;
  --ytf-font:        'Segoe UI', system-ui, -apple-system, sans-serif;
  --ytf-transition:  0.2s ease;
}

/* ---------- Wrapper ---------- */
.ytf-wrap {
  font-family: var(--ytf-font);
  background: var(--ytf-bg);
  color: var(--ytf-text);
  border-radius: 16px;
  padding: 32px;
  max-width: 780px;
  margin: 0 auto;
  box-shadow: 0 8px 40px rgba(0,0,0,.55);
}

/* ---------- Header ---------- */
.ytf-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.ytf-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--ytf-red);
  border-radius: 10px;
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
}

.ytf-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  color: var(--ytf-text) !important;
  letter-spacing: -0.02em;
}

/* ---------- Search Row ---------- */
.ytf-search-row {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.ytf-input {
  flex: 1;
  background: var(--ytf-surface);
  border: 1.5px solid var(--ytf-border);
  border-radius: var(--ytf-radius);
  color: var(--ytf-text);
  font-size: 0.95rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--ytf-transition), box-shadow var(--ytf-transition);
  font-family: var(--ytf-font);
}

.ytf-input::placeholder { color: var(--ytf-text-muted); }

.ytf-input:focus {
  border-color: var(--ytf-red);
  box-shadow: 0 0 0 3px rgba(255,0,0,.15);
}

/* ---------- Button ---------- */
.ytf-btn {
  background: var(--ytf-red);
  border: none;
  border-radius: var(--ytf-radius);
  color: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 22px;
  white-space: nowrap;
  transition: background var(--ytf-transition), transform var(--ytf-transition), opacity var(--ytf-transition);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--ytf-font);
  position: relative;
}

.ytf-btn:hover { background: var(--ytf-red-hover); transform: translateY(-1px); }
.ytf-btn:active { transform: translateY(0); }
.ytf-btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ---------- Spinner ---------- */
.ytf-spinner {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  display: none;
  animation: ytf-spin .7s linear infinite;
}

.ytf-btn.loading .ytf-btn-text { display: none; }
.ytf-btn.loading .ytf-spinner  { display: block; }

@keyframes ytf-spin { to { transform: rotate(360deg); } }

/* ---------- Error ---------- */
.ytf-error:empty {
  display: none !important;
}

.ytf-error {
  background: rgba(255,0,0,.12);
  border: 1px solid rgba(255,0,0,.35);
  border-radius: var(--ytf-radius-sm);
  color: #ff6b6b;
  font-size: 0.88rem;
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ytf-error::before { content: '⚠'; font-size: 1rem; }

/* ---------- Video Card ---------- */
.ytf-results {
  animation: ytf-fade-in .35s ease;
}

@keyframes ytf-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ytf-video-card {
  display: flex;
  gap: 18px;
  background: var(--ytf-surface);
  border: 1px solid var(--ytf-border);
  border-radius: var(--ytf-radius);
  padding: 16px;
  margin-bottom: 20px;
  align-items: flex-start;
}

.ytf-thumb {
  width: 160px;
  height: 90px;
  border-radius: var(--ytf-radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: #222;
}

.ytf-video-info { flex: 1; min-width: 0; }

.ytf-video-title {
  font-size: 0.97rem !important;
  font-weight: 600 !important;
  line-height: 1.4 !important;
  margin: 0 0 6px !important;
  padding: 0 !important;
  border: none !important;
  color: var(--ytf-text) !important;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

#ytf-video-link {
  text-decoration: none;
  color: inherit;
}

#ytf-video-link:hover .ytf-video-title { color: var(--ytf-red) !important; }

.ytf-channel {
  font-size: 0.83rem;
  color: var(--ytf-text-muted);
  margin: 0 0 10px;
}

.ytf-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.ytf-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  color: var(--ytf-text-muted);
}

.ytf-stat-icon { font-size: 0.85rem; }

/* ---------- Tags Section ---------- */
.ytf-tags-section {
  background: var(--ytf-surface);
  border: 1px solid var(--ytf-border);
  border-radius: var(--ytf-radius);
  padding: 18px;
}

.ytf-tags-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.ytf-tags-label {
  font-size: 0.92rem !important;
  font-weight: 600 !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  color: var(--ytf-text) !important;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ytf-tag-count {
  background: var(--ytf-red);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 20px;
}

/* Copy All button */
.ytf-copy-btn {
  background: var(--ytf-surface2);
  border: 1px solid var(--ytf-border);
  border-radius: var(--ytf-radius-sm);
  color: var(--ytf-text-muted);
  cursor: pointer;
  font-size: 0.82rem;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--ytf-transition), border-color var(--ytf-transition), background var(--ytf-transition);
  font-family: var(--ytf-font);
}

.ytf-copy-btn:hover {
  color: var(--ytf-text);
  border-color: var(--ytf-text-muted);
  background: var(--ytf-tag-hover);
}

.ytf-copy-btn.copied {
  color: #4caf50;
  border-color: #4caf50;
}

/* ---------- Tag Pills ---------- */
.ytf-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ytf-tag {
  background: var(--ytf-tag-bg);
  border: 1px solid var(--ytf-border);
  border-radius: 20px;
  color: var(--ytf-text);
  cursor: pointer;
  font-size: 0.82rem;
  padding: 5px 13px;
  transition: background var(--ytf-transition), border-color var(--ytf-transition), color var(--ytf-transition), transform var(--ytf-transition);
  user-select: none;
}

.ytf-tag:hover {
  background: var(--ytf-red);
  border-color: var(--ytf-red);
  color: #fff;
  transform: translateY(-1px);
}

.ytf-tag.selected {
  background: var(--ytf-red);
  border-color: var(--ytf-red);
  color: #fff;
}

/* ---------- No Tags ---------- */
.ytf-no-tags {
  color: var(--ytf-text-muted);
  font-size: 0.88rem;
  margin: 0;
  text-align: center;
  padding: 12px 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 540px) {
  .ytf-wrap { padding: 20px 16px; }
  .ytf-search-row { flex-direction: column; }
  .ytf-video-card { flex-direction: column; }
  .ytf-thumb { width: 100%; height: auto; aspect-ratio: 16/9; }
}