/* ============================================================
   BesicEdu — Video Player (HLS.js)
   Tokens only — DESIGN_SYSTEM.md §2.3. Module rangi: primary.
   ============================================================ */

.bedu-vp {
    --bedu-vp-control-h: 48px;
    --bedu-vp-track-h: 4px;
    --bedu-vp-thumb: 14px;

    position: relative;
    background: var(--bedu-text);                 /* deep neutral for video bezel */
    border-radius: var(--bedu-radius);
    overflow: hidden;
    box-shadow: var(--bedu-shadow);
    color: #fff;
    font-family: var(--bedu-font-body);
    aspect-ratio: 16 / 9;
}

.bedu-vp__video {
    width: 100%;
    height: 100%;
    display: block;
    background: #000;
}

/* ─── Poster / loading overlay ────────────────────────────── */
.bedu-vp__overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.35);
    pointer-events: auto;
    transition: opacity var(--bedu-dur) var(--bedu-ease);
}
.bedu-vp[data-state="playing"] .bedu-vp__overlay { opacity: 0; pointer-events: none; }

.bedu-vp__big-play {
    appearance: none;
    border: 0;
    width: 88px; height: 88px;
    border-radius: 50%;
    background: var(--bedu-primary);
    color: #fff;
    font-size: 2rem;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: transform var(--bedu-dur-fast) var(--bedu-ease),
                background-color var(--bedu-dur-fast) var(--bedu-ease);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .35);
}
.bedu-vp__big-play:hover { transform: scale(1.05); background: var(--bedu-primary-600); }

/* ─── Spinner ─────────────────────────────────────────────── */
.bedu-vp__spinner {
    width: 56px; height: 56px;
    border: 4px solid rgba(255,255,255,.25);
    border-top-color: var(--bedu-primary);
    border-radius: 50%;
    animation: bedu-vp-spin 800ms linear infinite;
}
@keyframes bedu-vp-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .bedu-vp__spinner { animation: none; } }

/* ─── Status banner (transcode in progress / failed) ──────── */
.bedu-vp__status {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--bedu-space-3);
    text-align: center;
    padding: var(--bedu-space-5);
    background: linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,.85));
    color: #fff;
}
.bedu-vp__status-title {
    font-family: var(--bedu-font-heading);
    font-weight: 700;
    font-size: 1.05rem;
}
.bedu-vp__status-progress {
    width: min(320px, 80%);
    height: 6px;
    background: rgba(255,255,255,.18);
    border-radius: var(--bedu-radius-pill);
    overflow: hidden;
}
.bedu-vp__status-progress > span {
    display: block;
    height: 100%;
    background: var(--bedu-primary);
    width: 0%;
    transition: width var(--bedu-dur) var(--bedu-ease);
}

/* ─── Controls ────────────────────────────────────────────── */
.bedu-vp__controls {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: var(--bedu-vp-control-h);
    padding: 0 var(--bedu-space-3);
    display: flex;
    align-items: center;
    gap: var(--bedu-space-2);
    background: linear-gradient(180deg, transparent, rgba(0,0,0,.7));
    transition: opacity var(--bedu-dur) var(--bedu-ease);
}
.bedu-vp[data-controls="hidden"] .bedu-vp__controls { opacity: 0; pointer-events: none; }

.bedu-vp__btn {
    appearance: none;
    background: transparent;
    border: 0;
    width: 36px; height: 36px;
    border-radius: var(--bedu-radius-pill);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--bedu-dur-fast) var(--bedu-ease);
}
.bedu-vp__btn:hover,
.bedu-vp__btn:focus-visible {
    background: rgba(255, 255, 255, .15);
    outline: none;
}

.bedu-vp__time {
    font-variant-numeric: tabular-nums;
    font-size: 0.85rem;
    color: #fff;
    opacity: 0.9;
    min-width: 96px;
    text-align: center;
}

/* ─── Progress bar (timeline) ─────────────────────────────── */
.bedu-vp__track {
    flex: 1;
    height: var(--bedu-vp-track-h);
    background: rgba(255,255,255,.22);
    border-radius: var(--bedu-radius-pill);
    position: relative;
    cursor: pointer;
}
.bedu-vp__buffered,
.bedu-vp__played {
    position: absolute;
    inset: 0 auto 0 0;
    border-radius: inherit;
    pointer-events: none;
}
.bedu-vp__buffered { background: rgba(255,255,255,.36); width: 0%; }
.bedu-vp__played   { background: var(--bedu-primary); width: 0%; }
.bedu-vp__thumb {
    position: absolute;
    top: 50%;
    width: var(--bedu-vp-thumb); height: var(--bedu-vp-thumb);
    background: #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    left: 0%;
    box-shadow: 0 2px 4px rgba(0,0,0,.4);
}

/* Chapter markers on the timeline */
.bedu-vp__chapter-mark {
    position: absolute;
    top: -3px;
    width: 2px;
    height: calc(var(--bedu-vp-track-h) + 6px);
    background: var(--bedu-accent);
    pointer-events: none;
    opacity: 0.85;
}

/* Tooltip on hover (chapter title) */
.bedu-vp__chapter-tip {
    position: absolute;
    bottom: calc(var(--bedu-vp-control-h) + 8px);
    transform: translateX(-50%);
    background: var(--bedu-surface);
    color: var(--bedu-text);
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius-sm);
    padding: 6px 10px;
    font-size: 0.8rem;
    box-shadow: var(--bedu-shadow);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--bedu-dur-fast) var(--bedu-ease);
    white-space: nowrap;
}
.bedu-vp__chapter-tip[data-visible="true"] { opacity: 1; }

/* ─── Quality menu ────────────────────────────────────────── */
.bedu-vp__menu {
    position: absolute;
    right: var(--bedu-space-3);
    bottom: calc(var(--bedu-vp-control-h) + 8px);
    background: var(--bedu-surface);
    color: var(--bedu-text);
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius-sm);
    box-shadow: var(--bedu-shadow);
    min-width: 160px;
    overflow: hidden;
    display: none;
}
.bedu-vp__menu[data-open="true"] { display: block; }

.bedu-vp__menu-item {
    appearance: none;
    background: transparent;
    border: 0;
    width: 100%;
    text-align: left;
    padding: 8px 12px;
    font-size: 0.9rem;
    color: var(--bedu-text);
    cursor: pointer;
}
.bedu-vp__menu-item:hover,
.bedu-vp__menu-item[aria-pressed="true"] {
    background: var(--bedu-primary-50);
    color: var(--bedu-primary-700);
}

/* ─── In-video quiz overlay ──────────────────────────────── */
.bedu-vp__quiz {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, .65);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--bedu-space-4);
}
.bedu-vp__quiz[data-open="true"] { display: flex; }

.bedu-vp__quiz-card {
    background: var(--bedu-surface);
    color: var(--bedu-text);
    border-radius: var(--bedu-radius);
    box-shadow: var(--bedu-shadow-lg);
    width: min(560px, 100%);
    padding: var(--bedu-space-5);
}
.bedu-vp__quiz-prompt {
    font-family: var(--bedu-font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    margin: 0 0 var(--bedu-space-3);
    color: var(--bedu-text);
}
.bedu-vp__quiz-choices {
    display: flex;
    flex-direction: column;
    gap: var(--bedu-space-2);
    margin: var(--bedu-space-3) 0;
}
.bedu-vp__quiz-choice {
    display: flex;
    align-items: center;
    gap: var(--bedu-space-2);
    padding: 10px 14px;
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius-sm);
    background: var(--bedu-surface);
    cursor: pointer;
    transition: border-color var(--bedu-dur-fast) var(--bedu-ease),
                background-color var(--bedu-dur-fast) var(--bedu-ease);
}
.bedu-vp__quiz-choice:hover {
    border-color: var(--bedu-primary);
    background: var(--bedu-primary-50);
}
.bedu-vp__quiz-choice[data-state="correct"] {
    border-color: var(--bedu-success);
    background: var(--bedu-success-50);
}
.bedu-vp__quiz-choice[data-state="wrong"] {
    border-color: var(--bedu-warm);
    background: var(--bedu-warm-50);
}
.bedu-vp__quiz-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius-sm);
    background: var(--bedu-surface);
    color: var(--bedu-text);
    font-size: 1rem;
}
.bedu-vp__quiz-actions {
    display: flex;
    gap: var(--bedu-space-2);
    justify-content: flex-end;
    margin-top: var(--bedu-space-4);
}
.bedu-vp__quiz-actions .bedu-btn { /* reuse brand button if available */ }

.bedu-vp__quiz-feedback {
    margin-top: var(--bedu-space-3);
    padding: 10px 12px;
    border-radius: var(--bedu-radius-sm);
    font-size: 0.92rem;
    display: none;
}
.bedu-vp__quiz-feedback[data-state="correct"] {
    display: block;
    background: var(--bedu-success-50);
    color: var(--bedu-success-600);
}
.bedu-vp__quiz-feedback[data-state="wrong"] {
    display: block;
    background: var(--bedu-warm-50);
    color: var(--bedu-warm-600);
}

/* ─── Chapter side panel (below the player) ───────────────── */
.bedu-vp-chapters {
    margin-top: var(--bedu-space-3);
    background: var(--bedu-surface);
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius);
    overflow: hidden;
}
.bedu-vp-chapters__head {
    padding: var(--bedu-space-3) var(--bedu-space-4);
    font-family: var(--bedu-font-heading);
    font-weight: 700;
    color: var(--bedu-text);
    border-bottom: 1px solid var(--bedu-border);
    background: var(--bedu-surface-muted);
}
.bedu-vp-chapter {
    display: flex;
    gap: var(--bedu-space-3);
    align-items: center;
    width: 100%;
    text-align: left;
    appearance: none;
    background: transparent;
    border: 0;
    border-left: 3px solid transparent;
    padding: 10px var(--bedu-space-4);
    cursor: pointer;
    color: var(--bedu-text);
    transition: background-color var(--bedu-dur-fast) var(--bedu-ease),
                border-color var(--bedu-dur-fast) var(--bedu-ease);
}
.bedu-vp-chapter:hover,
.bedu-vp-chapter[aria-current="true"] {
    background: var(--bedu-primary-50);
    border-left-color: var(--bedu-primary);
}
.bedu-vp-chapter__time {
    font-variant-numeric: tabular-nums;
    color: var(--bedu-text-muted);
    font-size: 0.85rem;
    min-width: 56px;
}
.bedu-vp-chapter__title {
    color: var(--bedu-text);
    font-weight: 500;
}