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

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --bg-dark: #1a1a2e;
    --bg-panel: #16213e;
    --bg-section: #0f3460;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border: #2a2a4a;
    --accent: #e94560;
    --success: #4ecdc4;
}

body {
    font-family: 'Noto Sans SC', 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

.container {
    display: flex;
    height: 100vh;
}

/* 左侧控制面板 */
.control-panel {
    width: 380px;
    min-width: 380px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 20px;
}

.control-panel::-webkit-scrollbar {
    width: 6px;
}

.control-panel::-webkit-scrollbar-track {
    background: var(--bg-panel);
}

.control-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.control-panel::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.control-section {
    margin-bottom: 24px;
    padding: 16px;
    background: var(--bg-section);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.section-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 模板网格 */
.template-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.template-item {
    aspect-ratio: 3 / 4;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.template-item:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

.template-item.active {
    border-color: var(--accent);
}

.template-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.3s;
}

.template-item:hover::after {
    opacity: 1;
}

/* 表单样式 */
.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group input[type="range"] {
    width: calc(100% - 60px);
    vertical-align: middle;
}

.form-group input[type="color"] {
    width: 100%;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    background: var(--bg-panel);
}

.form-group input[type="file"] {
    width: 100%;
    padding: 8px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--primary);
}

.range-value {
    display: inline-block;
    width: 50px;
    text-align: right;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 按钮 */
.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(102, 126, 234, 0.1);
}

.export-section {
    background: transparent;
    border: none;
    padding: 0;
}

/* 右侧预览区域 */
.preview-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    background-image:
        radial-gradient(circle at 25% 25%, rgba(102, 126, 234, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(233, 69, 96, 0.05) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
}

.preview-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.preview-container {
    perspective: 1000px;
    position: relative;
    z-index: 1;
}

.card-wrapper {
    transform-style: preserve-3d;
    transition: transform 0.1s ease-out;
}

.card {
    width: 380px;
    height: 500px;
    border-radius: 20px;
    position: relative;
    transform-style: preserve-3d;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    transition: box-shadow 0.3s ease;
}

.card-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
    transform: translateZ(30px);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.card-subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 16px;
    opacity: 0.9;
}

.card-description {
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.8;
    max-width: 280px;
}

/* 光泽效果 */
.card-glare {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    opacity: 0;
    pointer-events: none;
    z-index: 3;
    transition: opacity 0.3s;
}

/* Toast 消息 */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--success);
    color: #1a1a2e;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(78, 205, 196, 0.3);
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 响应式 */
@media (max-width: 900px) {
    .container {
        flex-direction: column;
    }
    .control-panel {
        width: 100%;
        min-width: unset;
        max-height: 50vh;
    }
    .card {
        width: 300px;
        height: 400px;
    }
}