/* ============================================
   ANZHUO AI Image Generator - 主样式表
   ============================================ */

:root {
    /* 颜色变量 */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --dark-bg: #0f172a;
    --darker-bg: #0a0e27;
    --light-bg: #1e293b;
    --lighter-bg: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #475569;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px var(--shadow-color);
    --shadow-md: 0 4px 6px var(--shadow-color);
    --shadow-lg: 0 10px 15px var(--shadow-color);
    --shadow-xl: 0 20px 25px var(--shadow-color);
    
    /* 过渡 */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ============================================
   基础重置
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   导航栏
   ============================================ */

.navbar {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    width: 2rem;
    height: 2rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: var(--spacing-sm);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

/* ============================================
   主容器布局
   ============================================ */

.container-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-container {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
}

/* ============================================
   选项卡
   ============================================ */

.tabs-container {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    margin-bottom: -1px;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* ============================================
   TAB 内容
   ============================================ */

.tab-content {
    display: none;
    animation: fadeIn var(--transition-base);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.form-section {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    backdrop-filter: blur(10px);
}

.form-section h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xl);
    font-size: 0.95rem;
}

.result-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.result-container {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.placeholder {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    opacity: 0.5;
}

.placeholder svg {
    width: 100px;
    height: 100px;
    opacity: 0.6;
}

.placeholder p {
    color: var(--text-tertiary);
    font-size: 1rem;
}

/* ============================================
   表单元素
   ============================================ */

.generation-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    background: rgba(51, 65, 85, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(51, 65, 85, 0.8);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23cbd5e1' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.char-count {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    text-align: right;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.slider-value {
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--primary-color) 0%, var(--secondary-color) 100%);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-lg);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   文件上传区域
   ============================================ */

.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: rgba(51, 65, 85, 0.3);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.15);
    transform: scale(1.02);
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.file-upload-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.file-upload-content p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.images-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.image-preview-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: rgba(51, 65, 85, 0.5);
    aspect-ratio: 1;
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-preview-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(239, 68, 68, 0.9);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.image-preview-item:hover .image-preview-remove {
    opacity: 1;
}

/* ============================================
   按钮
   ============================================ */

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(51, 65, 85, 0.8);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(51, 65, 85, 1);
    border-color: var(--primary-color);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.85rem;
}

.btn-large {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   加载动画
   ============================================ */

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   设置页面
   ============================================ */

.settings-container {
    grid-template-columns: 1fr !important;
}

.settings-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    backdrop-filter: blur(10px);
}

.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.status-message {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.status-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.status-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.models-info {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: rgba(99, 102, 241, 0.05);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
}

.models-info h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.models-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.models-list li {
    color: var(--text-secondary);
    padding: var(--spacing-md);
    background: rgba(51, 65, 85, 0.3);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-light);
}

/* ============================================
   通知
   ============================================ */

.notification {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    z-index: 1000;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    animation: slideIn 300ms ease-out;
    display: none;
}

.notification.show {
    display: block;
}

.notification.success {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.notification.error {
    border-color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

.notification.warning {
    border-color: var(--warning-color);
    background: rgba(245, 158, 11, 0.1);
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.notification.hide {
    animation: slideOut 300ms ease-out forwards;
}

/* ============================================
   信息框
   ============================================ */

.info-box {
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.info-box p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.info-box code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 4px;
    border-radius: 2px;
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
}

.info-box strong {
    font-weight: 600;
}

/* ============================================
   页脚
   ============================================ */

.footer {
    margin-top: auto;
    background: rgba(15, 23, 42, 0.5);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) var(--spacing-xl);
    text-align: center;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
    .content-inner {
        grid-template-columns: 1fr;
    }

    .result-container {
        min-height: 400px;
    }

    .main-container {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: var(--spacing-md);
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        display: none;
    }

    .form-section {
        padding: var(--spacing-lg);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .button-group {
        grid-template-columns: 1fr;
    }

    .tabs-container {
        gap: var(--spacing-sm);
    }

    .tab-btn {
        padding: var(--spacing-md);
    }

    .main-container {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .result-container {
        min-height: 300px;
    }

    .notification {
        max-width: calc(100% - 2rem);
        right: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .form-section h2 {
        font-size: 1.25rem;
    }

    .placeholder svg {
        width: 60px;
        height: 60px;
    }

    .images-preview {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .tab-btn {
        font-size: 0.85rem;
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .tab-icon {
        width: 1rem;
        height: 1rem;
    }
}