/* WIA AI Book Writer — Frontend Wizard v2.0 */
:root {
    --wia-primary: #667eea;
    --wia-primary-dark: #5a6fd6;
    --wia-secondary: #764ba2;
    --wia-success: #10b981;
    --wia-warning: #f59e0b;
    --wia-danger: #ef4444;
    --wia-bg: #f8fafc;
    --wia-card: #ffffff;
    --wia-border: #e2e8f0;
    --wia-text: #1e293b;
    --wia-muted: #94a3b8;
    --wia-radius: 12px;
    --wia-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.wia-writer-wrap {
    max-width: 860px;
    margin: 0 auto;
    padding: 24px 16px 60px;
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--wia-text);
}

/* Progress Bar */
.wia-wizard-progress {
    display: flex;
    gap: 8px;
    margin-bottom: 36px;
    padding: 0 4px;
}
.wia-progress-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    opacity: 0.35;
    transition: all 0.3s;
}
.wia-progress-item.active,
.wia-progress-item.completed { opacity: 1; }
.wia-progress-num {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--wia-border);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px; color: var(--wia-muted);
    transition: all 0.3s;
}
.wia-progress-item.active .wia-progress-num {
    background: linear-gradient(135deg, var(--wia-primary), var(--wia-secondary));
    color: #fff;
}
.wia-progress-item.completed .wia-progress-num {
    background: var(--wia-success);
    color: #fff;
}
.wia-progress-item.completed .wia-progress-num::after { content: "\2713"; }
.wia-progress-label { font-size: 11px; color: var(--wia-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.wia-progress-item.active .wia-progress-label { color: var(--wia-primary); }

/* Step Header */
.wia-step-header {
    text-align: center;
    margin-bottom: 32px;
}
.wia-step-header h2 {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 8px;
    background: linear-gradient(135deg, var(--wia-primary), var(--wia-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.wia-step-header p {
    font-size: 15px;
    color: var(--wia-muted);
    margin: 0;
}

/* Grid (Language / Category) */
.wia-grid {
    display: grid;
    gap: 12px;
}
.wia-lang-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
.wia-cat-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }

.wia-grid-card {
    padding: 18px 12px;
    border: 2px solid var(--wia-border);
    border-radius: var(--wia-radius);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--wia-card);
}
.wia-grid-card:hover {
    border-color: var(--wia-primary);
    transform: translateY(-3px);
    box-shadow: var(--wia-shadow);
}
.wia-grid-card.selected {
    border-color: var(--wia-primary);
    background: linear-gradient(135deg, rgba(102,126,234,0.06), rgba(118,75,162,0.06));
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}
.wia-grid-card .wia-card-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 8px;
}
.wia-grid-card .wia-card-name {
    font-weight: 700;
    font-size: 14px;
    display: block;
}
.wia-grid-card .wia-card-sub {
    font-size: 11px;
    color: var(--wia-muted);
    display: block;
    margin-top: 2px;
}

/* Input */
.wia-input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}
.wia-input, .wia-input-large {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid var(--wia-border);
    border-radius: var(--wia-radius);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}
.wia-input:focus, .wia-input-large:focus {
    border-color: var(--wia-primary);
}
.wia-input-large { font-size: 17px; font-weight: 600; }

/* Buttons */
.wia-btn-primary, .wia-btn-secondary, .wia-btn-back, .wia-btn-success {
    padding: 12px 28px;
    border: none;
    border-radius: var(--wia-radius);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.wia-btn-primary {
    background: linear-gradient(135deg, var(--wia-primary), var(--wia-secondary));
    color: #fff;
}
.wia-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(102,126,234,0.35); }
.wia-btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.wia-btn-secondary {
    background: var(--wia-card);
    color: var(--wia-primary);
    border: 2px solid var(--wia-primary);
}
.wia-btn-secondary:hover { background: rgba(102,126,234,0.06); }
.wia-btn-back {
    background: none;
    color: var(--wia-muted);
    padding: 12px 16px;
}
.wia-btn-back:hover { color: var(--wia-text); }
.wia-btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
}
.wia-btn-success:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(16,185,129,0.35); }
.wia-btn-large { padding: 16px 36px; font-size: 17px; }
.wia-btn-glow { animation: wia-glow 2s ease-in-out infinite; }

@keyframes wia-glow {
    0%, 100% { box-shadow: 0 0 8px rgba(102,126,234,0.3); }
    50% { box-shadow: 0 0 24px rgba(102,126,234,0.6); }
}

/* Title Suggestions */
.wia-titles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}
.wia-title-card {
    padding: 16px;
    border: 2px solid var(--wia-border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    background: var(--wia-card);
}
.wia-title-card:hover { border-color: var(--wia-primary); background: #f8f9ff; }
.wia-title-card.selected {
    border-color: var(--wia-primary);
    background: linear-gradient(135deg, #f0f4ff, #f5f0ff);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}
.wia-titles-actions { text-align: center; margin: 16px 0; }
.wia-or-divider {
    color: var(--wia-muted); font-size: 13px; margin: 12px 0;
    display: flex; align-items: center; gap: 12px;
}
.wia-or-divider::before, .wia-or-divider::after {
    content: ''; flex: 1; height: 1px; background: var(--wia-border);
}

/* Direction Form */
#wia-direction-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}
.wia-direction-field {
    background: var(--wia-card);
    border: 1px solid var(--wia-border);
    border-radius: var(--wia-radius);
    padding: 16px;
}
.wia-direction-field label {
    display: block;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 8px;
}
.wia-direction-field .wia-suggestion {
    display: inline-block;
    background: linear-gradient(135deg, rgba(102,126,234,0.1), rgba(118,75,162,0.1));
    color: var(--wia-primary);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    margin-bottom: 8px;
}
.wia-direction-field input,
.wia-direction-field select,
.wia-direction-field textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--wia-border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
}
.wia-direction-field input:focus,
.wia-direction-field select:focus,
.wia-direction-field textarea:focus { border-color: var(--wia-primary); }

/* TOC */
.wia-toc-chapter {
    background: var(--wia-card);
    border: 1px solid var(--wia-border);
    border-radius: var(--wia-radius);
    padding: 18px;
    margin-bottom: 10px;
    transition: all 0.2s;
}
.wia-toc-chapter:hover { border-color: var(--wia-primary); }
.wia-toc-num {
    display: inline-flex;
    align-items: center; justify-content: center;
    width: 28px; height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--wia-primary), var(--wia-secondary));
    color: #fff; font-size: 13px; font-weight: 700;
    margin-right: 10px;
    flex-shrink: 0;
}
.wia-toc-title { font-weight: 700; font-size: 15px; }
.wia-toc-subtitle { color: var(--wia-muted); font-size: 13px; margin-top: 2px; }
.wia-toc-summary { font-size: 13px; color: #64748b; margin-top: 8px; line-height: 1.5; }
.wia-toc-points {
    display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px;
}
.wia-toc-point {
    background: var(--wia-bg); padding: 3px 10px; border-radius: 20px;
    font-size: 12px; color: #64748b;
}

/* Writing Progress */
.wia-progress-bar-wrap {
    display: flex; align-items: center; gap: 12px; margin-bottom: 24px;
}
.wia-progress-bar {
    flex: 1; height: 12px; background: var(--wia-border); border-radius: 6px; overflow: hidden;
}
.wia-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--wia-primary), var(--wia-success));
    border-radius: 6px;
    transition: width 0.5s ease;
}
.wia-progress-text { font-weight: 700; font-size: 15px; color: var(--wia-primary); min-width: 40px; }

/* Chapter List */
.wia-chapter-list {
    display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px;
}
.wia-chapter-item {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px;
    background: var(--wia-card);
    border: 1px solid var(--wia-border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}
.wia-chapter-item:hover { border-color: var(--wia-primary); }
.wia-chapter-item.completed { border-left: 4px solid var(--wia-success); }
.wia-chapter-item.generating { border-left: 4px solid var(--wia-warning); }
.wia-chapter-status {
    font-size: 18px;
    flex-shrink: 0;
}
.wia-chapter-item-title { font-weight: 600; font-size: 14px; flex: 1; }
.wia-chapter-words { font-size: 12px; color: var(--wia-muted); }

/* Chapter Preview */
.wia-chapter-preview {
    background: var(--wia-card);
    border: 1px solid var(--wia-border);
    border-radius: var(--wia-radius);
    padding: 28px;
    margin-bottom: 24px;
    max-height: 500px;
    overflow-y: auto;
    line-height: 1.8;
}

/* Step Actions */
.wia-step-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}
.wia-step-nav { margin-top: 16px; }

/* Loading */
.wia-loading {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    backdrop-filter: blur(4px);
}
.wia-spinner {
    width: 48px; height: 48px;
    border: 4px solid var(--wia-border);
    border-top-color: var(--wia-primary);
    border-radius: 50%;
    animation: wia-spin 0.8s linear infinite;
}
@keyframes wia-spin { to { transform: rotate(360deg); } }
.wia-loading-text {
    margin-top: 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--wia-primary);
}

/* Mobile */
@media (max-width: 640px) {
    .wia-writer-wrap { padding: 16px 12px 40px; }
    .wia-step-header h2 { font-size: 22px; }
    .wia-lang-grid { grid-template-columns: repeat(3, 1fr); }
    .wia-cat-grid { grid-template-columns: repeat(2, 1fr); }
    .wia-titles-grid { grid-template-columns: 1fr; }
    .wia-input-group { flex-direction: column; }
    .wia-progress-label { display: none; }
    .wia-progress-num { width: 28px; height: 28px; font-size: 12px; }
    .wia-btn-large { padding: 14px 24px; font-size: 15px; }
    .wia-step-actions { flex-direction: column; }
}