/* ============================================
   クリエイティブアカデミー - Style Sheet
   ============================================ */

:root {
    --primary: #e11d48;
    --primary-dark: #be123c;
    --primary-light: #ffe4e6;
    --accent: #f43f5e;
    --accent-light: #fff1f2;
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --bg: #fdf2f4;
    --bg-card: #ffffff;
    --bg-sidebar: #1a0a10;
    --bg-code: #f5e6ea;
    --text: #1a0a10;
    --text-secondary: #64748b;
    --text-sidebar: #e2e8f0;
    --border: #e5c7ce;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 15px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --sidebar-width: 280px;
    --header-height: 60px;
}

[data-theme="dark"] {
    --bg: #1a0a10;
    --bg-card: #2a1520;
    --bg-sidebar: #10050a;
    --bg-code: #3a1525;
    --text: #f0e0e5;
    --text-secondary: #94a3b8;
    --border: #4a2535;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 15px rgba(0,0,0,0.3);
    --primary-light: #4a1525;
    --success-light: #064e3b;
    --danger-light: #7f1d1d;
    --accent-light: #4a1525;
    --warning-light: #78350f;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow: hidden;
    height: 100vh;
}

/* ---- Header ---- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, #9f1239 0%, #e11d48 50%, #fb7185 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-center { flex: 1; max-width: 400px; margin: 0 24px; }
.header-right { display: flex; align-items: center; gap: 8px; }

.logo { font-size: 1.15rem; font-weight: 800; letter-spacing: -0.5px; white-space: nowrap; }
.logo-accent { color: #fecdd3; margin-left: 4px; }

.sidebar-toggle {
    display: none;
    background: none; border: none; color: white;
    font-size: 1.5rem; cursor: pointer; padding: 4px;
}

.btn-icon {
    background: rgba(255,255,255,0.1);
    border: none; color: white;
    width: 36px; height: 36px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s;
}
.btn-icon:hover { background: rgba(255,255,255,0.2); }

/* Progress bar */
.global-progress { display: flex; align-items: center; gap: 10px; }
.global-progress-bar {
    flex: 1; height: 8px;
    background: rgba(255,255,255,0.2);
    border-radius: 4px; overflow: hidden;
}
.global-progress-fill {
    height: 100%; width: 0;
    background: linear-gradient(90deg, #fda4af, #fecdd3);
    border-radius: 4px;
    transition: width 0.5s ease;
}
.global-progress-text { font-size: 0.8rem; opacity: 0.9; white-space: nowrap; }

/* ---- Layout ---- */
.main-layout {
    display: flex;
    height: calc(100vh - var(--header-height));
    margin-top: var(--header-height);
}

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    overflow-y: auto;
    flex-shrink: 0;
    border-right: 1px solid rgba(255,255,255,0.05);
}

.sidebar-section { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }

.sidebar-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.15s;
    border-left: 3px solid transparent;
}
.sidebar-item:hover { background: rgba(255,255,255,0.05); }
.sidebar-item.active { background: rgba(225,29,72,0.3); border-left-color: var(--primary); }
.sidebar-item.completed .status-dot { background: var(--success); }

.sidebar-icon { font-size: 1.2rem; }

.dashboard-link { font-weight: 600; font-size: 0.9rem; }

.sidebar-level { border-bottom: 1px solid rgba(255,255,255,0.05); }
.sidebar-level-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    font-size: 0.85rem; font-weight: 600;
    transition: background 0.15s;
}
.sidebar-level-header:hover { background: rgba(255,255,255,0.05); }
.sidebar-level-header .chevron {
    font-size: 0.7rem;
    transition: transform 0.2s;
}
.sidebar-level-header.expanded .chevron { transform: rotate(90deg); }

.sidebar-modules {
    max-height: 0; overflow: hidden;
    transition: max-height 0.3s ease;
}
.sidebar-modules.expanded { max-height: 1000px; }

.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #64748b;
    flex-shrink: 0;
}

/* ---- Content ---- */
.content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    max-width: 100%;
}

/* ---- Dashboard ---- */
.dashboard-hero {
    background: linear-gradient(135deg, #9f1239, #e11d48, #fb7185);
    color: white;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    margin-bottom: 28px;
}
.dashboard-hero h2 { font-size: 1.8rem; margin-bottom: 8px; }
.dashboard-hero p { opacity: 0.9; font-size: 1rem; line-height: 1.6; }

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid var(--border);
}
.stat-value { font-size: 1.8rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--text-secondary); margin-top: 4px; }

.level-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
}
.level-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.level-card-header { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
.level-icon { font-size: 2rem; }
.level-card h3 { font-size: 1rem; margin-bottom: 2px; }
.level-desc { font-size: 0.8rem; color: var(--text-secondary); }
.level-progress-bar {
    height: 6px; background: var(--border); border-radius: 3px; overflow: hidden;
}
.level-progress-fill { height: 100%; background: var(--success); border-radius: 3px; transition: width 0.5s; }
.level-progress-text { font-size: 0.75rem; color: var(--text-secondary); margin-top: 6px; }

.level-1 { border-left-color: #e11d48; }
.level-2 { border-left-color: #0891b2; }
.level-3 { border-left-color: #7c3aed; }
.level-4 { border-left-color: #059669; }
.level-5 { border-left-color: #dc2626; }
.level-6 { border-left-color: #f59e0b; }

/* ---- Module ---- */
.module-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.module-breadcrumb {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.module-breadcrumb a {
    color: var(--primary);
    cursor: pointer;
    text-decoration: none;
}
.module-breadcrumb a:hover { text-decoration: underline; }
.module-title { font-size: 1.6rem; font-weight: 800; margin-bottom: 8px; }
.module-meta { display: flex; gap: 16px; font-size: 0.85rem; color: var(--text-secondary); }

.module-body {
    max-width: 800px;
    font-size: 0.95rem;
    line-height: 1.8;
}
.module-body h2 {
    font-size: 1.3rem; font-weight: 700;
    margin: 32px 0 12px;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--primary);
    color: var(--text);
}
.module-body h3 {
    font-size: 1.1rem; font-weight: 700;
    margin: 24px 0 8px;
    color: var(--text);
}
.module-body p { margin-bottom: 12px; }
.module-body ul, .module-body ol {
    margin: 8px 0 16px 24px;
}
.module-body li { margin-bottom: 6px; }

.module-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.85rem;
}
.module-body th, .module-body td {
    padding: 10px 12px;
    text-align: left;
    border: 1px solid var(--border);
}
.module-body th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}
.module-body tr:nth-child(even) { background: var(--bg); }

/* Info boxes */
.info-box {
    border-radius: var(--radius);
    padding: 16px 18px;
    margin: 16px 0;
    font-size: 0.9rem;
    border-left: 4px solid;
}
.info-box-title { font-weight: 700; margin-bottom: 6px; font-size: 0.9rem; }
.info-box.tip { background: var(--primary-light); border-color: var(--primary); }
.info-box.warning { background: var(--warning-light); border-color: var(--warning); }
.info-box.success { background: var(--success-light); border-color: var(--success); }
.info-box.danger { background: var(--danger-light); border-color: var(--danger); }
.info-box.formula { background: var(--accent-light); border-color: var(--accent); }

/* Visual diagram boxes */
.visual-box {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin: 16px 0;
    text-align: center;
}
.visual-box-title {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Collapsible sections */
.collapsible { margin: 12px 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.collapsible-header {
    padding: 12px 16px;
    background: var(--bg);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex; justify-content: space-between; align-items: center;
    user-select: none;
}
.collapsible-header::after { content: '▼'; font-size: 0.7rem; transition: transform 0.2s; }
.collapsible.open .collapsible-header::after { transform: rotate(180deg); }
.collapsible-body { display: none; padding: 16px; }
.collapsible.open .collapsible-body { display: block; }

/* Scenario box */
.scenario-box {
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin: 16px 0;
}
.scenario-box-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--primary);
    margin-bottom: 10px;
}
.scenario-box .bad { color: var(--danger); }
.scenario-box .good { color: var(--success); }

/* Comparison grid */
.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 16px 0;
}
.compare-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}
.compare-card h4 {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--primary);
}

/* Step-by-step */
.steps { margin: 16px 0; }
.step {
    display: flex; gap: 14px;
    margin-bottom: 16px;
    padding: 14px;
    background: var(--bg);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
}
.step-num {
    width: 32px; height: 32px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}
.step-content { flex: 1; }
.step-content strong { display: block; margin-bottom: 4px; }

/* Module navigation */
.module-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    gap: 12px;
    flex-wrap: wrap;
}

/* ---- Quiz ---- */
.quiz-container { max-width: 800px; }
.quiz-header { margin-bottom: 24px; }
.quiz-header h2 { font-size: 1.4rem; margin-bottom: 12px; }
.quiz-progress { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--text-secondary); }
.quiz-progress-bar { flex: 1; height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.quiz-progress-fill { height: 100%; background: var(--primary); border-radius: 3px; transition: width 0.3s; }

.quiz-question {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}
.quiz-question-num { font-size: 0.8rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.quiz-question-text { font-size: 1rem; font-weight: 600; margin-bottom: 16px; line-height: 1.6; }

.quiz-options { display: flex; flex-direction: column; gap: 8px; }
.quiz-option {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s;
    font-size: 0.9rem;
}
.quiz-option:hover { border-color: var(--primary); background: var(--primary-light); }
.quiz-option.selected { border-color: var(--primary); background: var(--primary-light); }
.quiz-option.correct { border-color: var(--success); background: var(--success-light); }
.quiz-option.incorrect { border-color: var(--danger); background: var(--danger-light); }

.quiz-option-marker {
    width: 28px; height: 28px;
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.8rem;
    flex-shrink: 0;
}
.quiz-option.selected .quiz-option-marker { border-color: var(--primary); background: var(--primary); color: white; }
.quiz-option.correct .quiz-option-marker { border-color: var(--success); background: var(--success); color: white; }
.quiz-option.incorrect .quiz-option-marker { border-color: var(--danger); background: var(--danger); color: white; }

.quiz-fill-blank input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--bg-card);
    color: var(--text);
}
.quiz-fill-blank input:focus { outline: none; border-color: var(--primary); }

.quiz-explanation {
    display: none;
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--accent);
}
.quiz-explanation.show { display: block; }

.quiz-actions {
    display: flex; gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
    padding: 10px 20px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #059669; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 12px 28px; font-size: 1rem; }

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex; align-items: center; justify-content: center;
    z-index: 200;
    backdrop-filter: blur(4px);
}
.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 440px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
}
.modal h2 { font-size: 1.5rem; margin-bottom: 16px; }
.modal p { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
.modal-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.score-circle {
    width: 100px; height: 100px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; font-weight: 800;
    margin: 16px auto;
}
.score-circle.pass { background: var(--success-light); color: var(--success); border: 3px solid var(--success); }
.score-circle.fail { background: var(--danger-light); color: var(--danger); border: 3px solid var(--danger); }

/* ---- Reference ---- */
.reference-search { margin-bottom: 16px; }
.reference-search input {
    width: 100%; padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--bg-card);
    color: var(--text);
}
.reference-search input:focus { outline: none; border-color: var(--primary); }

/* ---- Animation ---- */
.fade-in {
    animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .sidebar-toggle { display: block; }
    .sidebar {
        position: fixed;
        top: var(--header-height);
        left: calc(-1 * var(--sidebar-width));
        bottom: 0;
        z-index: 50;
        transition: left 0.3s ease;
    }
    .sidebar.open { left: 0; }
    .content { padding: 20px 16px; }
    .logo { font-size: 1rem; }
    .header-center { display: none; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .compare-grid { grid-template-columns: 1fr; }
    .module-nav { flex-direction: column; }
}