:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #334155;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --accent: #a855f7;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========== 布局 ========== */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header .logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
}

.sidebar-header h1 {
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav { flex: 1; padding: 12px; overflow-y: auto; }

.nav-group { margin-bottom: 8px; }
.nav-group-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    padding: 8px 12px 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
    font-size: 14px;
    text-decoration: none;
}
.nav-item:hover { background: var(--bg-input); color: var(--text); }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-item .icon { font-size: 18px; width: 24px; text-align: center; }
.nav-item .badge {
    margin-left: auto;
    background: var(--primary);
    color: #fff;
    font-size: 11px;
    padding: 1px 8px;
    border-radius: 10px;
}
.nav-item.active .badge { background: rgba(255,255,255,0.25); }

.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.topbar {
    height: 60px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
    gap: 16px;
}

.topbar .page-title { font-size: 18px; font-weight: 600; flex: 1; }

.page-body { padding: 24px; }

/* ========== 组件 ========== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 20px;
}
.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.card-header h3 { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }
.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.9; }
.btn-warning { background: var(--warning); color: #000; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg-input); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn .icon { font-size: 16px; }

.form-group { margin-bottom: 16px; }
.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}
.form-control {
    width: 100%;
    padding: 9px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    transition: border-color 0.2s;
    font-family: inherit;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
textarea.form-control { min-height: 80px; resize: vertical; }
select.form-control { cursor: pointer; }

.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}
.stat-icon.purple { background: rgba(168,85,247,0.15); color: var(--accent); }
.stat-icon.blue { background: rgba(59,130,246,0.15); color: var(--info); }
.stat-icon.green { background: rgba(34,197,94,0.15); color: var(--success); }
.stat-icon.orange { background: rgba(245,158,11,0.15); color: var(--warning); }
.stat-info h4 { font-size: 13px; color: var(--text-secondary); font-weight: 400; }
.stat-info .stat-num { font-size: 28px; font-weight: 700; }

.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}
th { color: var(--text-secondary); font-weight: 500; }
tr:hover td { background: rgba(255,255,255,0.02); }

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
}
.badge-primary { background: rgba(99,102,241,0.15); color: var(--primary-light); }
.badge-success { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--info); }

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-secondary);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { font-size: 14px; }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 90%;
    max-width: 640px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
}
.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-header h3 { font-size: 16px; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 20px;
    padding: 4px;
}
.modal-body { padding: 20px; }
.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 13px;
    color: #fff;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    max-width: 400px;
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--info); }
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); padding: 0 20px; }
.tab-item {
    padding: 10px 16px;
    font-size: 13px;
    cursor: pointer;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}
.tab-item:hover { color: var(--text); }
.tab-item.active { color: var(--primary-light); border-bottom-color: var(--primary); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* 分镜卡片 */
.scene-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
    position: relative;
    cursor: grab;
}
.scene-card:hover { border-color: var(--primary); }
.scene-card .scene-num {
    position: absolute;
    top: -8px;
    left: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 11px;
    padding: 1px 10px;
    border-radius: 10px;
}
.scene-card .scene-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.scene-card .scene-meta { display: flex; gap: 8px; font-size: 12px; color: var(--text-secondary); }
.scene-card .scene-desc { font-size: 13px; margin-bottom: 8px; }
.scene-card .scene-dialogue {
    background: var(--bg-input);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-style: italic;
    border-left: 3px solid var(--primary);
}

/* 工作流步骤 */
.workflow-steps {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px;
    overflow-x: auto;
}
.workflow-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    white-space: nowrap;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}
.workflow-step.active { border-color: var(--primary); background: rgba(99,102,241,0.1); }
.workflow-step.completed { border-color: var(--success); background: rgba(34,197,94,0.1); }
.workflow-step .step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
}
.workflow-step.active .step-num { background: var(--primary); color: #fff; }
.workflow-step.completed .step-num { background: var(--success); color: #fff; }
.workflow-arrow { color: var(--text-secondary); font-size: 18px; }

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15,23,42,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: inherit;
}

/* 角色卡片 */
.char-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.2s;
}
.char-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.char-card .char-avatar {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, var(--bg-input), var(--bg));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    overflow: hidden;
}
.char-card .char-avatar img { width: 100%; height: 100%; object-fit: cover; }
.char-card .char-info { padding: 12px; }
.char-card .char-name { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.char-card .char-desc { font-size: 12px; color: var(--text-secondary); line-height: 1.4; }
.char-card .char-actions {
    padding: 8px 12px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 6px;
}

/* Progress */
.progress { height: 6px; background: var(--bg-input); border-radius: 3px; overflow: hidden; }
.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    transition: width 0.3s;
}

/* 响应式 */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; gap: 0; }
}