/* ==============================================
   Anima WebUI - Tutorial Page Styles
   Shizuku-guided conversational tutorial
   ============================================== */

/* ── Tutorial layout: override base.css overflow ── */
.tutorial-page {
    height: auto !important;
    min-height: 100vh;
    overflow: visible !important;
}

body:has(.tutorial-page) {
    overflow-y: auto !important;
    overflow-x: hidden !important;
}

/* ── Embedded panel mode (inside index.html) ── */
#panel-tutorial {
    overflow-y: auto;
    overflow-x: hidden;
}

#panel-tutorial.active {
    display: block;
}

.tutorial-page-content {
    min-height: 100vh;
}

.tutorial-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 40px 100px;
    width: 100%;
}

/* ── Hero section ── */
.tutorial-hero {
    text-align: center;
    padding: 64px 0 48px;
    position: relative;
}

.tutorial-hero-title {
    font-size: 3.6rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.tutorial-hero-subtitle {
    font-size: 1.6rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.tutorial-hero-shizuku {
    width: 320px;
    height: auto;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.3));
    animation: heroFloat 3s ease-in-out infinite;
}

@keyframes heroFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* ── Table of Contents ── */
.tutorial-toc {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px 40px;
    margin-bottom: 56px;
}

.tutorial-toc-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.tutorial-toc-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 32px;
}

.tutorial-toc-list a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.4rem;
    transition: all var(--transition-fast);
}

.tutorial-toc-list a:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tutorial-toc-list .toc-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ── Tutorial Section ── */
.tutorial-section {
    margin-bottom: 72px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.tutorial-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.tutorial-section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-subtle);
}

.section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 1.4rem;
    font-weight: 700;
    flex-shrink: 0;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ── Conversation bubble ── */
.shizuku-talk {
    display: flex;
    gap: 24px;
    margin-bottom: 28px;
    align-items: flex-start;
}

.shizuku-avatar {
    flex-shrink: 0;
    width: 140px;
    position: relative;
}

.shizuku-avatar img {
    width: 140px;
    height: auto;
    filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.25));
    transition: transform 0.3s ease;
    border-radius: var(--radius-md);
}

.shizuku-talk:hover .shizuku-avatar img {
    transform: scale(1.05);
}

.shizuku-avatar .emotion-label {
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.9rem;
    color: var(--text-muted);
    white-space: nowrap;
    background: var(--bg-surface);
    padding: 2px 10px;
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
}

.shizuku-bubble {
    flex: 1;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 36px;
    position: relative;
    font-size: 1.5rem;
    line-height: 2;
    color: var(--text-primary);
}

.shizuku-bubble::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 36px;
    width: 0;
    height: 0;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    border-right: 12px solid var(--border-subtle);
}

.shizuku-bubble::after {
    content: '';
    position: absolute;
    left: -10px;
    top: 37px;
    width: 0;
    height: 0;
    border-top: 11px solid transparent;
    border-bottom: 11px solid transparent;
    border-right: 11px solid var(--bg-surface);
}

.shizuku-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-secondary);
    margin-bottom: 8px;
    display: block;
}

/* ── Highlight & emphasis ── */
.shizuku-bubble strong {
    color: var(--accent-secondary);
    font-weight: 600;
}

.shizuku-bubble em {
    color: var(--text-secondary);
    font-style: normal;
    font-size: 1.3rem;
}

.shizuku-bubble code {
    background: var(--bg-elevated);
    color: var(--accent-tertiary);
    padding: 4px 10px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 1.3rem;
}

/* ── Info box (tips, warnings) ── */
.info-box {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 24px 32px;
    margin: 20px 0;
    font-size: 1.4rem;
    line-height: 1.9;
}

.info-box.tip {
    border-left: 4px solid var(--status-success);
}

.info-box.warning {
    border-left: 4px solid var(--status-warning);
}

.info-box.danger {
    border-left: 4px solid var(--status-error);
}

.info-box-title {
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-box.tip .info-box-title {
    color: var(--status-success);
}

.info-box.warning .info-box-title {
    color: var(--status-warning);
}

.info-box.danger .info-box-title {
    color: var(--status-error);
}

/* ── Step list ── */
.step-list {
    list-style: none;
    counter-reset: step;
    margin: 20px 0;
}

.step-list li {
    counter-increment: step;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 12px 0;
    font-size: 1.5rem;
    line-height: 1.7;
}

.step-list li::before {
    content: counter(step);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 4px;
}

/* ── Tag example display ── */
.tag-example {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--accent-tertiary);
    margin: 4px 6px;
    white-space: nowrap;
}

.tag-example .tag-desc {
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 1.1rem;
    margin-left: 6px;
}

/* ── Comparison table ── */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 1.3rem;
}

.compare-table th {
    background: var(--bg-elevated);
    padding: 14px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-default);
}

.compare-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

.compare-table tr:hover td {
    background: var(--bg-hover);
}

.compare-table .mode-name {
    font-weight: 600;
    color: var(--accent-secondary);
}

/* ── Scroll to top ── */
.scroll-top-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
    z-index: 100;
}

.scroll-top-btn.visible {
    opacity: 1;
    pointer-events: auto;
}

.scroll-top-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(var(--accent-primary-rgb), 0.4);
}

/* ── Footer navigation ── */
.tutorial-footer-nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--border-subtle);
}

.tutorial-footer-nav a {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: var(--gradient-accent);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1.5rem;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.tutorial-footer-nav a:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tutorial-footer-nav a.secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    box-shadow: none;
}

.tutorial-footer-nav a.secondary:hover {
    background: var(--bg-hover);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .tutorial-main {
        padding: 16px 12px 48px;
    }

    .tutorial-hero-title {
        font-size: 1.6rem;
    }

    .tutorial-toc-list {
        grid-template-columns: 1fr;
    }

    .shizuku-talk {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .shizuku-avatar {
        width: 60px;
    }

    .shizuku-avatar img {
        width: 60px;
    }

    .shizuku-bubble::before,
    .shizuku-bubble::after {
        display: none;
    }

    .shizuku-bubble {
        border-radius: var(--radius-md);
    }

    .tutorial-footer-nav {
        flex-direction: column;
        align-items: center;
    }
}