/* 自定义样式 */
:root {
    --primary-color: #4a5568;
    --secondary-color: #3182ce;
    --accent-color: #4299e1;
    --light-bg: #f8fafc;
    --dark-bg: #1a202c;
    --light-text: #2d3748;
    --dark-text: #cbd5e0;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

.dark {
    --primary-color: #cbd5e0;
    --secondary-color: #4299e1;
    --accent-color: #3182ce;
    --light-bg: #1a202c;
    --dark-bg: #2d3748;
    --light-text: #cbd5e0;
    --dark-text: #cbd5e0;
    --card-bg: #2d3748;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

body {
    background-color: var(--light-bg);
    color: var(--light-text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

.dark body {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header {
    padding: 1rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--primary-color);
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.main-content {
    padding: 2rem 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .main-content {
        grid-template-columns: 1fr 1fr;
    }
}

.generation-form {
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.generation-form:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.form-title {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.25rem;
    background-color: var(--card-bg);
    color: var(--light-text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.dark .form-group input,
.dark .form-group textarea,
.dark .form-group select {
    border-color: #4a5568;
    color: var(--dark-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(49, 131, 206, 0.2);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.submit-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.25rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    background-color: var(--accent-color);
    transform: scale(1.02);
}

.submit-btn:disabled {
    background-color: #cbd5e0;
    cursor: not-allowed;
    opacity: 0.7;
}

.results-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.result-card {
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.result-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.result-info {
    padding: 1rem;
}

.result-seed {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--primary-color);
}

.result-time {
    font-size: 0.75rem;
    color: var(--primary-color);
    opacity: 0.8;
}

.footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--primary-color);
    opacity: 0.7;
}

@media (max-width: 767px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .theme-toggle {
        margin-top: 0.5rem;
    }

    .main-content {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--secondary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 淡入动画 */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 滚动效果 */
.scroll-smooth {
    scroll-behavior: smooth;
}