/* Ishtar Online Academy — course catalog (Udemy-style browse) */

/* Hero with search */
.oc-hero { position: relative; overflow: hidden; background: var(--bg2); padding: 64px 0 46px; border-bottom: 1px solid var(--border); }
.oc-hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.oc-kicker { font: 600 .74rem var(--f-mono, 'IBM Plex Mono', monospace); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); margin-bottom: 10px; }
.oc-hero h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); line-height: 1.08; color: var(--white); letter-spacing: -.02em; max-width: 16ch; }
.oc-hero p { color: var(--text-muted); font-size: 1.02rem; line-height: 1.7; margin-top: 14px; max-width: 54ch; }
.oc-hero-search { margin-top: 24px; display: flex; align-items: center; gap: 8px; background: var(--input-bg); border: 1.5px solid var(--input-border); border-radius: 999px; padding: 6px 6px 6px 18px; max-width: 620px; box-shadow: var(--card-shadow); }
.oc-hero-search:focus-within { border-color: var(--blue); box-shadow: 0 0 0 4px var(--input-focus); }
.oc-hero-search svg { width: 20px; height: 20px; flex: none; fill: none; stroke: var(--text-muted); stroke-width: 2; }
.oc-hero-search input { flex: 1; min-width: 0; border: 0; background: transparent; font: inherit; font-size: 1rem; color: var(--text); padding: 10px 4px; outline: none; }
.oc-hero-search .btn { border-radius: 999px; padding: 12px 22px; }
.oc-popular { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; font-size: .84rem; color: var(--text-muted); }
.oc-topic { font: inherit; font-size: .82rem; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border-med); background: transparent; color: var(--text); cursor: pointer; }
.oc-topic:hover { border-color: var(--gold-border); background: var(--gold-dim); }
.oc-hero-side { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.oc-stat { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 18px; box-shadow: var(--card-shadow); }
.oc-stat b { display: block; font-family: var(--f-display, 'Instrument Sans', sans-serif); font-size: 1.45rem; color: var(--white); }
.oc-stat span { font-size: .82rem; color: var(--text-muted); }
.oc-signin { grid-column: 1 / -1; font-size: .88rem; color: var(--blue-light); text-decoration: none; padding: 4px 2px; }
.oc-signin:hover { text-decoration: underline; }

/* Sticky category bar */
.oc-catbar { position: sticky; top: var(--nav-h, 72px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.oc-catbar-in { display: flex; gap: 6px; overflow-x: auto; padding: 10px 0; scrollbar-width: none; }
.oc-catbar-in::-webkit-scrollbar { display: none; }
.oc-cat { flex: none; font: inherit; font-size: .88rem; font-weight: 500; padding: 8px 16px; border-radius: 999px; border: 1px solid transparent; background: transparent; color: var(--text-muted); cursor: pointer; white-space: nowrap; }
.oc-cat:hover { color: var(--white); background: var(--bg3); }
.oc-cat.on { color: var(--white); background: var(--bg-card); border-color: var(--border-med); box-shadow: var(--card-shadow); }

/* Rows (rails) */
.oc-main { padding: 40px 0 70px; background: var(--bg); overflow-x: clip; }
.oc-row { margin-bottom: 44px; }
.oc-row-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.oc-row-head h2 { font-size: 1.5rem; color: var(--white); }
.oc-seeall { font: inherit; font-size: .9rem; font-weight: 600; color: var(--blue-light); background: none; border: 0; cursor: pointer; }
.oc-seeall:hover { text-decoration: underline; }
.oc-rail-wrap { position: relative; }
.oc-rail { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 3 * 20px) / 4); gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; padding: 4px 2px 12px; }
.oc-rail::-webkit-scrollbar { display: none; }
.oc-rail > .oc-card { scroll-snap-align: start; }
.oc-arrow { position: absolute; top: 34%; z-index: 4; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border-med); background: var(--bg-card); color: var(--white); font-size: 1.6rem; line-height: 1; cursor: pointer; box-shadow: var(--card-shadow-hover); display: flex; align-items: center; justify-content: center; }
.oc-arrow[hidden] { display: none; }
.oc-prev { inset-inline-start: -18px; } .oc-next { inset-inline-end: -18px; }
[dir="rtl"] .oc-arrow { transform: scaleX(-1); }

/* Course card */
.oc-card { position: relative; min-width: 0; }
.oc-card[hidden] { display: none !important; }
.oc-link { display: flex; flex-direction: column; height: 100%; color: inherit; text-decoration: none; }
.oc-thumb { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius-lg); overflow: hidden; background: var(--bg3); border: 1px solid var(--border); }
.oc-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s var(--ease-out); }
.oc-card:hover .oc-thumb img { transform: scale(1.04); }
.oc-thumb-fb { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; padding: 16px; text-align: center; font-weight: 600; color: #fff; background: linear-gradient(140deg, #164476, #0B2347); }
.oc-play { position: absolute; inset-inline-end: 10px; bottom: 10px; width: 34px; height: 34px; border-radius: 50%; background: rgba(11,35,71,.78); display: flex; align-items: center; justify-content: center; }
.oc-play svg { width: 16px; height: 16px; fill: #fff; margin-inline-start: 2px; }
.oc-body { padding: 12px 2px 4px; display: flex; flex-direction: column; gap: 5px; flex: 1; }
.oc-title { font-size: 1rem; line-height: 1.35; color: var(--white); font-weight: 650; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.oc-link:hover .oc-title { color: var(--blue-light); }
.oc-by { font-size: .78rem; color: var(--text-dim); }
.oc-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: .78rem; color: var(--text-muted); }
.oc-meta span + span::before { content: '•'; margin-inline-end: 12px; color: var(--text-dim); }
.oc-price { display: flex; align-items: baseline; gap: 8px; margin-top: 2px; }
.oc-price b { font-size: 1.05rem; color: var(--white); }
.oc-price s { font-size: .86rem; color: var(--text-dim); }
.oc-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.oc-b { font-size: .7rem; font-weight: 600; padding: 3px 8px; border-radius: 4px; background: var(--bg3); color: var(--text-muted); }
.oc-b-feat { background: var(--gold-dim); color: var(--gold-ink); border: 1px solid var(--gold-border); }
.oc-b-new { background: rgba(47,125,91,.12); color: var(--green); }
.oc-b-sale { background: rgba(184,58,46,.10); color: var(--red); }

/* Hover preview card (desktop only) */
.oc-pop { display: none; }
@media (hover: hover) and (pointer: fine) and (min-width: 1100px) {
  .oc-pop { display: block; position: absolute; top: -6px; inset-inline-start: calc(100% + 14px); z-index: 30; width: 320px; padding: 20px; border-radius: var(--radius-lg); background: var(--bg-card); border: 1px solid var(--border-med); box-shadow: 0 30px 70px -26px rgba(5,12,24,.55); opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity .18s ease, transform .18s ease, visibility 0s linear .18s; pointer-events: none; }
  .oc-card.pop-left .oc-pop { inset-inline-start: auto; inset-inline-end: calc(100% + 14px); }
  .oc-card:hover .oc-pop { opacity: 1; visibility: visible; transform: none; transition-delay: .25s, .25s, 0s; pointer-events: auto; }
  .oc-in-rail .oc-pop { display: none; }
}
.oc-pop h4 { font-size: 1.05rem; line-height: 1.35; color: var(--white); }
.oc-pop-meta { font-size: .76rem; color: var(--green); margin-top: 6px; }
.oc-pop p { font-size: .86rem; color: var(--text-muted); line-height: 1.6; margin-top: 10px; }
.oc-pop ul { list-style: none; margin: 12px 0 0; padding: 0; }
.oc-pop li { position: relative; padding-inline-start: 24px; font-size: .84rem; line-height: 1.5; margin-bottom: 7px; color: var(--text); }
.oc-pop li::before { content: '✓'; position: absolute; inset-inline-start: 0; top: 0; color: var(--green); font-weight: 700; }
.oc-pop-btn { width: 100%; margin-top: 14px; justify-content: center; }

/* Browse with sidebar */
.oc-browse { scroll-margin-top: 140px; }
.oc-browse-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; margin-bottom: 18px; padding-top: 6px; border-top: 1px solid var(--border); padding-top: 32px; }
.oc-browse-head h2 { font-size: 1.7rem; color: var(--white); }
.oc-tools { display: flex; gap: 10px; align-items: center; }
.oc-sort { display: flex; align-items: center; gap: 8px; font-size: .85rem; color: var(--text-muted); }
.oc-sort select { font: inherit; font-size: .88rem; padding: 9px 12px; border-radius: var(--radius); border: 1.5px solid var(--input-border); background: var(--input-bg); color: var(--text); }
.oc-filter-btn { display: none; }
.oc-browse-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 34px; align-items: start; }
.oc-side { position: sticky; top: calc(var(--nav-h, 72px) + 70px); max-height: calc(100vh - 170px); overflow: auto; padding-inline-end: 6px; }
.oc-side fieldset { border: 0; border-top: 1px solid var(--border); padding: 16px 0 12px; margin: 0; }
.oc-side legend { font-weight: 700; color: var(--white); font-size: .95rem; padding: 0; margin-bottom: 10px; float: left; width: 100%; }
.oc-side label { display: flex; align-items: center; gap: 9px; font-size: .88rem; color: var(--text); padding: 5px 0; cursor: pointer; clear: both; }
.oc-side label i { margin-inline-start: auto; font-style: normal; font-size: .76rem; color: var(--text-dim); }
.oc-side input { accent-color: var(--blue); width: 16px; height: 16px; }
.oc-side-tags { display: flex; flex-wrap: wrap; gap: 6px; clear: both; }
.oc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 22px; }

/* How it works strip */
.oc-trust { background: var(--bg2); border-top: 1px solid var(--border); padding: 34px 0; }
.oc-trust-grid { display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: 28px; align-items: center; }
.oc-trust b { color: var(--white); font-size: .98rem; }
.oc-trust p { color: var(--text-muted); font-size: .86rem; margin-top: 4px; }

@media (max-width: 1180px) { .oc-rail { grid-auto-columns: calc((100% - 2 * 20px) / 3); } }
@media (max-width: 1000px) {
  .oc-hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .oc-hero-side { grid-template-columns: repeat(2, 1fr); }
  .oc-browse-grid { grid-template-columns: 1fr; }
  .oc-filter-btn { display: inline-flex; }
  .oc-side { display: none; position: static; max-height: none; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 4px 18px 10px; }
  .oc-side.open { display: block; }
  .oc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .oc-trust-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .oc-rail { grid-auto-columns: 72%; }
  .oc-arrow { display: none !important; }
  .oc-hero { padding: 40px 0 30px; }
  .oc-hero-side { grid-template-columns: 1fr 1fr; gap: 10px; }
  .oc-stat { padding: 14px; } .oc-stat b { font-size: 1.15rem; }
  .oc-grid { grid-template-columns: 1fr; gap: 26px; }
  .oc-browse-head { align-items: flex-start; flex-direction: column; }
  .oc-tools { width: 100%; justify-content: space-between; }
  .oc-trust-grid { grid-template-columns: 1fr; gap: 16px; }
  .oc-hero-search .btn { padding: 10px 14px; }
}
@media (prefers-reduced-motion: reduce) { .oc-thumb img, .oc-pop { transition: none !important; } }

/* Verify certificate button in the hero */
.oc-verify-btn { grid-column: 1 / -1; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 18px; border-radius: 12px; background: #0B2347; color: #fff; font-weight: 700; font-size: 15.5px; text-decoration: none; border: 1px solid #0B2347; transition: background .2s, transform .2s; }
.oc-verify-btn svg { width: 20px; height: 20px; fill: none; stroke: #D9B26F; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.oc-verify-btn:hover { background: #163a6e; transform: translateY(-1px); color: #fff; }
.oc-verify-btn:focus-visible { outline: 3px solid #D9B26F; outline-offset: 2px; }
[data-theme="dark"] .oc-verify-btn { background: #C9A061; border-color: #C9A061; color: #0B1220; }
[data-theme="dark"] .oc-verify-btn svg { stroke: #0B1220; }