/* ==========================================================================
   VIKA — Tutorials (list: Tutorials/Index · detail: Tutorials/DetailFa)
   Relies on vika.css + vika-inner.css
   ========================================================================== */

/* ---------- LIST: hero ---------- */
.tutorials-hero { padding-block: var(--sp-8) var(--sp-5); text-align: center; position: relative; z-index: 1; }
.tutorials-hero-content { max-width: 680px; margin-inline: auto; padding-inline: var(--sp-5); }
.tutorials-hero-title { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 500; margin-block-end: var(--sp-4); }
.tutorials-hero-subtitle { color: var(--fg-muted); }

/* ---------- LIST: shell ---------- */
.tutorials-section { padding-block: var(--sp-5) var(--sp-9); position: relative; z-index: 1; }
.tutorials-container { width: min(100% - 2 * var(--sp-5), var(--container)); margin-inline: auto; }

/* filters */
.tutorials-filters { padding: var(--sp-4) var(--sp-5); margin-block-end: var(--sp-5); }
.filters-form { width: 100%; }
.filters-row { display: flex; flex-wrap: wrap; gap: var(--sp-4); align-items: center; }
.filter-group { flex: 1; min-width: 180px; position: relative; }
.search-group { flex: 2; min-width: 220px; }
.search-icon { position: absolute; inset-inline-start: 14px; inset-block-start: 50%; translate: 0 -50%; color: var(--accent); font-size: 0.85rem; pointer-events: none; }
.filter-input, .filter-select {
  width: 100%; padding: 0.75rem 1rem; font-size: 0.9rem; color: var(--fg);
  background: oklch(18% 0.005 85 / 0.6); border: 1px solid var(--glass-border); border-radius: 0;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.filter-input { padding-inline-start: 2.6rem; }
.filter-input::placeholder { color: var(--fg-faint); }
.filter-input:focus, .filter-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px oklch(74% 0.09 85 / 0.15); }
.filter-select {
  appearance: none; -webkit-appearance: none; cursor: pointer; padding-inline-end: 2.4rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5 6 6.5l5-5' stroke='%23c9a24f' stroke-width='1.4'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: left 1rem center;
}
.filter-select option { background: var(--c-ink); color: var(--fg); }
.filter-clear {
  display: inline-flex; align-items: center; gap: var(--sp-2); white-space: nowrap;
  padding: 0.7rem 1.1rem; font-size: 0.82rem; color: var(--fg-muted);
  border: 1px solid var(--glass-border); transition: border-color var(--t-fast), color var(--t-fast);
}
.filter-clear:hover { border-color: oklch(65% 0.18 25 / 0.7); color: oklch(82% 0.1 25); }

/* results info */
.results-info {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--sp-4);
  padding-block: var(--sp-3); margin-block-end: var(--sp-5); border-block-end: 1px solid var(--glass-border);
  font-size: 0.85rem; color: var(--fg-muted);
}
.results-count i { color: var(--accent); margin-inline-end: var(--sp-2); }
.search-term { color: var(--accent); }

/* grid + card */
.tutorials-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--sp-5); }
.tutorial-card { display: flex; flex-direction: column; overflow: hidden; transition: transform var(--t-med), border-color var(--t-med); }
.tutorial-card:hover { transform: translateY(-6px); border-color: oklch(74% 0.09 85 / 0.4); }
.tutorial-image { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--c-ink-soft); }
.tutorial-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--t-slow); }
.tutorial-card:hover .tutorial-image img { transform: scale(1.05); }
.tutorial-badge, .tutorial-duration, .tutorial-type-badge {
  position: absolute; padding: 0.3rem 0.75rem; font-size: 0.7rem; letter-spacing: 0.04em;
  background: oklch(12% 0.004 30 / 0.7); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.tutorial-badge { inset-block-start: var(--sp-3); inset-inline-start: var(--sp-3); color: var(--accent); border: 1px solid oklch(74% 0.09 85 / 0.5); }
.tutorial-badge:empty { display: none; }
.tutorial-duration { inset-block-end: var(--sp-3); inset-inline-end: var(--sp-3); color: var(--fg); }
.tutorial-type-badge { inset-block-end: var(--sp-3); inset-inline-start: var(--sp-3); color: var(--fg); }
.tutorial-duration i { color: var(--accent); margin-inline-end: 4px; }
.tutorial-content { padding: var(--sp-5); flex: 1; display: flex; flex-direction: column; }
.tutorial-category { font-size: 0.72rem; letter-spacing: 0.1em; color: var(--accent); margin-block-end: var(--sp-2); }
.tutorial-title { font-size: 1.05rem; line-height: 1.6; margin-block-end: var(--sp-3); }
.tutorial-title a { transition: color var(--t-fast); }
.tutorial-title a:hover { color: var(--accent); }
.tutorial-description { flex: 1; font-size: 0.85rem; color: var(--fg-muted); margin-block-end: var(--sp-4); }
.tutorial-product {
  display: flex; align-items: center; gap: var(--sp-2); font-size: 0.8rem; color: var(--fg-faint);
  padding-block-end: var(--sp-3); margin-block-end: var(--sp-3); border-block-end: 1px dashed var(--glass-border);
}
.tutorial-product i { color: var(--accent); }
.tutorial-product .product-link { color: var(--fg-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 220px; transition: color var(--t-fast); }
.tutorial-product .product-link:hover { color: var(--accent); }
.tutorial-meta { display: flex; gap: var(--sp-5); font-size: 0.75rem; color: var(--fg-faint); padding-block-start: var(--sp-3); margin-block-end: var(--sp-4); border-block-start: 1px solid var(--glass-border); }
.tutorial-meta span { display: flex; align-items: center; gap: 6px; }
.tutorial-btn {
  display: inline-flex; align-items: center; gap: var(--sp-2); width: fit-content;
  padding: 0.6rem 1.4rem; font-size: 0.85rem; color: var(--fg);
  border: 1px solid var(--glass-border);
  transition: border-color var(--t-fast), color var(--t-fast), gap var(--t-med);
}
.tutorial-btn:hover { border-color: var(--accent); color: var(--accent); gap: var(--sp-3); }
.tutorial-btn i { font-size: 0.75rem; }

.no-tutorials { grid-column: 1 / -1; text-align: center; padding: var(--sp-9) var(--sp-5); color: var(--fg-muted); }
.no-tutorials i { font-size: 2.6rem; color: var(--accent); opacity: 0.6; margin-block-end: var(--sp-4); display: block; }
.no-tutorials h3 { color: var(--fg); margin-block-end: var(--sp-2); }

/* ---------- DETAIL ---------- */
.tutorial-breadcrumb { padding-block: var(--sp-5) 0; font-size: 0.8rem; position: relative; z-index: 1; }
.tutorial-breadcrumb .container { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-3); }
.tutorial-breadcrumb a { color: var(--fg-muted); transition: color var(--t-fast); }
.tutorial-breadcrumb a:hover { color: var(--accent); }
.tutorial-breadcrumb .separator { color: var(--fg-faint); }
.tutorial-breadcrumb .current { color: var(--fg); }

.tutorial-detail { padding-block: var(--sp-6) var(--sp-9); position: relative; z-index: 1; }
.tutorial-detail-wrapper { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: var(--sp-6); align-items: start; }
.tutorial-main { display: flex; flex-direction: column; gap: var(--sp-5); min-width: 0; }

.tutorial-title-main { font-size: clamp(1.6rem, 3.6vw, 2.5rem); line-height: 1.5; margin-block-end: var(--sp-4); }
.tutorial-meta-top { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-5); font-size: 0.8rem; color: var(--fg-muted); }
.meta-item { display: inline-flex; align-items: center; gap: var(--sp-2); }
.meta-item i { color: var(--accent); }
.badge { display: inline-block; padding: 0.25rem 0.8rem; font-size: 0.72rem; border: 1px solid oklch(74% 0.09 85 / 0.5); color: var(--accent); }

.tutorial-video-container { position: relative; aspect-ratio: 16 / 9; background: #000; border: 1px solid var(--glass-border); box-shadow: 0 24px 60px oklch(0% 0 0 / 0.4); }
.tutorial-video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }

.tutorial-description-box, .tutorial-attachments, .tutorial-tags, .tutorial-share { padding: var(--sp-5) var(--sp-6); }
.section-title-small {
  display: flex; align-items: center; gap: var(--sp-3);
  font-size: 0.92rem; font-weight: 500; color: var(--accent);
  padding-block-end: var(--sp-3); margin-block-end: var(--sp-4); border-block-end: 1px solid var(--glass-border);
}
.description-content { color: var(--fg-muted); font-size: 0.95rem; line-height: 2.1; }

.attachments-list { display: grid; gap: var(--sp-3); }
.attachment-item {
  display: flex; align-items: center; gap: var(--sp-4); padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--glass-border); color: var(--fg-muted); font-size: 0.85rem;
  transition: border-color var(--t-fast), color var(--t-fast);
}
.attachment-item:hover { border-color: var(--accent); color: var(--accent); }
.attachment-item i { font-size: 1.2rem; color: var(--accent); }
.attachment-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachment-size { font-size: 0.72rem; color: var(--fg-faint); direction: ltr; }

.tags-list { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.share-buttons { display: flex; flex-wrap: wrap; gap: var(--sp-3); }
.share-btn {
  display: inline-flex; align-items: center; gap: var(--sp-2); cursor: pointer;
  padding: 0.6rem 1.1rem; font-size: 0.82rem; color: var(--fg-muted);
  background: transparent; border: 1px solid var(--glass-border);
  transition: border-color var(--t-fast), color var(--t-fast), transform var(--t-fast);
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* sidebar */
.tutorial-sidebar { position: sticky; inset-block-start: 84px; display: flex; flex-direction: column; gap: var(--sp-4); }
.sidebar-card-header { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-4) var(--sp-5); font-size: 0.85rem; color: var(--accent); border-block-end: 1px solid var(--glass-border); }
.sidebar-card-body { padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-3); }
.category-name { font-size: 1rem; }
.category-link, .related-product-btn { display: inline-flex; align-items: center; gap: var(--sp-2); font-size: 0.8rem; color: var(--accent); transition: gap var(--t-med); width: fit-content; }
.category-link:hover, .related-product-btn:hover { gap: var(--sp-3); }
.related-product { display: flex; gap: var(--sp-4); align-items: center; }
.related-product-image { flex: 0 0 76px; height: 76px; border: 1px solid var(--glass-border); overflow: hidden; background: var(--c-ink-soft); }
.related-product-image img { width: 100%; height: 100%; object-fit: cover; }
.related-product-title { font-size: 0.9rem; margin-block-end: var(--sp-2); line-height: 1.6; }
.related-product-title a:hover { color: var(--accent); }
.stats-list { gap: 0; }
.stat-item { display: flex; justify-content: space-between; padding-block: var(--sp-3); border-block-end: 1px solid var(--glass-border); font-size: 0.85rem; }
.stat-item:last-child { border-block-end: 0; }
.stat-label { color: var(--fg-muted); }
.stat-value { color: var(--fg); }

/* related tutorials */
.related-tutorials { margin-block-start: var(--sp-8); }
.related-tutorials .section-title.related-title {
  display: flex; align-items: center; gap: var(--sp-3); font-size: 1.15rem; margin-block-end: var(--sp-5);
}
.related-title i { color: var(--accent); }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--sp-5); }
.related-card { overflow: hidden; transition: transform var(--t-med), border-color var(--t-med); }
.related-card:hover { transform: translateY(-6px); border-color: oklch(74% 0.09 85 / 0.4); }
.related-image { aspect-ratio: 16 / 10; overflow: hidden; background: var(--c-ink-soft); }
.related-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--t-slow); }
.related-card:hover .related-image img { transform: scale(1.05); }
.related-content { padding: var(--sp-4); }
.related-category { display: block; font-size: 0.7rem; letter-spacing: 0.1em; color: var(--accent); margin-block-end: var(--sp-2); }
.related-card .related-title { font-size: 0.95rem; line-height: 1.6; margin-block-end: var(--sp-3); }
.related-card .related-title a:hover { color: var(--accent); }
.related-meta { font-size: 0.72rem; color: var(--fg-faint); }
.related-meta i { margin-inline-end: 4px; }

@media (max-width: 991px) {
  .tutorial-detail-wrapper { grid-template-columns: 1fr; }
  .tutorial-sidebar { position: static; }
}
@media (max-width: 767px) {
  .tutorials-grid { grid-template-columns: 1fr; }
  .filters-row { flex-direction: column; align-items: stretch; }
  .filter-group, .search-group { flex: none; min-width: 0; }
  .filter-clear { justify-content: center; }
  .results-info { flex-direction: column; text-align: center; }
  .tutorial-description-box, .tutorial-attachments, .tutorial-tags, .tutorial-share { padding: var(--sp-4); }
}