/* Audio UI styles — inline content highlighting + podcast transcript window */

/* -------------------------------------------------------------------------
   Inline content audio — sentence highlighting
   ------------------------------------------------------------------------- */

.audio-sentence {
    cursor: pointer;
    border-radius: 2px;
    transition: background-color 0.2s ease;
}

.audio-sentence:hover {
    background-color: var(--accent-blue-bg, rgba(67, 97, 238, 0.08));
}

.audio-sentence-active {
    background-color: var(--accent-blue-bg, rgba(67, 97, 238, 0.15));
    box-shadow: 0 0 0 2px var(--accent-blue-bg, rgba(67, 97, 238, 0.15));
}

/* Inline play button */
.audio-inline-play {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    color: var(--accent-blue, #4361ee);
}

/* -------------------------------------------------------------------------
   Podcast tier buttons
   ------------------------------------------------------------------------- */

.audio-podcast-btn {
    font-size: var(--font-size-sm-md);
    text-transform: capitalize;
    padding: 8px 12px;
    min-height: 36px;
    border-radius: var(--radius-md, 8px);
}

.audio-podcast-btn-active {
    background: var(--accent-blue, #4361ee);
    color: #fff;
    border-color: var(--accent-blue, #4361ee);
}

/* -------------------------------------------------------------------------
   Language buttons
   ------------------------------------------------------------------------- */

.learning-lang-btn {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    padding: 6px 10px;
    min-height: 36px;
    border-radius: var(--radius-md, 8px);
    letter-spacing: 0.5px;
}

.learning-lang-btn-active {
    background: var(--accent-blue, #4361ee);
    color: #fff;
    border-color: var(--accent-blue, #4361ee);
}

/* -------------------------------------------------------------------------
   Podcast transcript window
   ------------------------------------------------------------------------- */

.audio-transcript-window {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 900;
    background: var(--bg-secondary, #fff);
    border-top: 2px solid var(--border-color, #ddd);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    transition: height 0.2s ease;
}

/* Window states */
.audio-transcript-minimized {
    height: 38px !important;
    overflow: hidden;
}

.audio-transcript-normal {
    /* height set via JS */
}

.audio-transcript-maximized {
    height: 50vh !important;
}

/* Drag handle */
.audio-transcript-drag {
    height: 12px;
    cursor: ns-resize;
    background: linear-gradient(
        to bottom,
        var(--border-color, #ccc) 1px,
        transparent 1px,
        transparent 3px,
        var(--border-color, #ccc) 3px,
        transparent 3px
    );
    flex-shrink: 0;
}

.audio-transcript-minimized .audio-transcript-drag {
    display: none;
}

/* Header bar */
.audio-transcript-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 12px;
    border-bottom: 1px solid var(--border-color, #eee);
    flex-shrink: 0;
    min-height: 30px;
}

.audio-transcript-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.audio-transcript-time {
    font-size: var(--font-size-sm);
    font-family: var(--font-family-mono);
    color: var(--text-secondary, #6b7a99);
    white-space: nowrap;
}

.audio-transcript-controls {
    display: flex;
    gap: 4px;
    align-items: center;
}

.audio-transcript-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    min-width: 36px;
    min-height: 36px;
    color: var(--text-secondary, #666);
    display: flex;
    align-items: center;
    justify-content: center;
}

.audio-transcript-btn:hover {
    background: var(--bg-hover, rgba(0, 0, 0, 0.05));
    color: var(--text-primary);
}

/* Transcript body */
.audio-transcript-body {
    flex: 1;
    overflow-y: auto;
    padding: 8px 16px;
}

.audio-transcript-minimized .audio-transcript-body {
    display: none;
}

/* Transcript lines */
.audio-transcript-line {
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.15s ease;
    margin-bottom: 2px;
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.audio-transcript-line:hover {
    background: var(--bg-hover, rgba(0, 0, 0, 0.03));
}

.audio-transcript-line-active {
    background: var(--accent-blue-bg, rgba(67, 97, 238, 0.15));
    border-left: 3px solid var(--accent-blue, #4361ee);
    padding-left: 8px;
}

.audio-transcript-highlight {
    background: rgba(245, 158, 11, 0.25);
    border-left: 3px solid var(--accent-amber, #f59e0b);
    padding-left: 8px;
}

.audio-transcript-speaker {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-blue, #4361ee);
    min-width: 50px;
    flex-shrink: 0;
    padding-top: 2px;
}

.audio-transcript-text {
    font-size: var(--font-size-md-lg);
    color: var(--text-primary);
    line-height: 1.5;
}

/* -------------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------------- */

@media (max-width: 768px) {
    .learning-level-audio-controls {
        flex-wrap: wrap;
        gap: 4px;
    }

    .audio-podcast-btn,
    .learning-lang-btn {
        font-size: var(--font-size-xs);
        padding: 2px 6px;
    }

    .audio-transcript-window {
        max-height: 40vh;
    }

    .audio-transcript-speaker {
        min-width: 40px;
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 480px) {
    .learning-level-audio-controls {
        /* width: 100%; */
        justify-content: flex-end;
    }
}