/* Slide presentation mode */

.slides-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1rem 2rem;
    min-height: 60vh;
    display: flex;
    flex-direction: column;
}

/* Progress bar */
.slides-progress {
    position: sticky;
    top: 0;
    z-index: 10;
    height: 3px;
    background: var(--border-color, #ddd);
    border-radius: 2px;
    overflow: hidden;
}

.slides-progress-bar {
    height: 100%;
    background: var(--primary, #417690);
    transition: width 0.3s ease;
    border-radius: 2px;
}

/* Header */
.slides-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.slides-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--body-quiet-color, #666);
    text-decoration: none;
    font-size: 0.875rem;
}

.slides-back-link:hover {
    color: var(--link-fg, #417690);
}

.slides-counter {
    font-size: 0.875rem;
    color: var(--body-quiet-color, #666);
    font-variant-numeric: tabular-nums;
}

/* Viewport */
.slides-viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.slide {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 1rem 0 2rem;
}

.slide--active {
    display: block;
    opacity: 1;
}

.slide--enter-left,
.slide--enter-right {
    opacity: 0;
}

.slide--enter-left.slide--active,
.slide--enter-right.slide--active {
    opacity: 1;
}

.slide-content {
    line-height: 1.7;
}

.slide-content h1 {
    margin-top: 0;
    font-size: 1.75rem;
    border-bottom: 2px solid var(--primary, #417690);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.slide-content table,
.slide-content table td,
.slide-content table th {
    font-size: 1.15rem !important;
}

.slide-content h2 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
}

/* Navigation */
.slides-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-top: 1px solid var(--border-color, #ddd);
    margin-top: auto;
}

.slides-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color, #ddd);
    border-radius: 6px;
    background: var(--card-bg, var(--body-bg, #fff));
    color: var(--body-fg, #333);
    cursor: pointer;
    font-size: 0.875rem;
    transition: border-color 0.2s, background 0.2s;
    max-width: 45%;
}

.slides-nav-btn:hover:not(:disabled) {
    border-color: var(--primary, #417690);
    color: var(--primary, #417690);
}

.slides-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.slides-nav-btn-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Two-column layout for slides */
.two-col {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.two-col .col pre {
    font-size: 0.75rem;
    line-height: 1.4;
    margin: 0;
}

.two-col .col img {
    max-width: 100%;
    max-height: 280px;
    width: auto;
    height: auto;
    border-radius: 6px;
    border: 1px solid var(--border-color, #ddd);
    object-fit: contain;
}

@media (max-width: 600px) {
    .two-col {
        grid-template-columns: 1fr !important;
    }
}

/* Responsive */
@media (max-width: 600px) {
    .slides-container {
        padding: 0 0.5rem 1rem;
    }

    .slide-content h1 {
        font-size: 1.35rem;
    }

    .slides-nav-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .slides-nav-btn-text {
        display: none;
    }
}