:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #10b981;
    --secondary-hover: #059669;
    --accent-color: #f97316;
    --accent-hover: #ea580c;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --success-color: #10b981;
    --background-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 1rem;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
    padding: 0;
    margin: 0;
    min-height: 100vh;
    position: relative;
}

.page-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    z-index: -1;
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

h2 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    position: relative;
}

.section-decoration {
    flex-grow: 1;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border-color));
    margin-left: 1rem;
}

.settings-section,
.input-section,
.content-section,
.history-section {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.settings-section:hover,
.input-section:hover,
.content-section:hover,
.history-section:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.setting-item {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
    background-color: var(--card-bg);
    color: var(--text-primary);
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

textarea {
    min-height: 150px;
    resize: vertical;
}

.model-selector {
    margin-bottom: 1.5rem;
}

.prompt-input {
    margin-bottom: 1.5rem;
}

.image-upload {
    margin-bottom: 1.5rem;
    border: 2px dashed var(--border-color);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-speed);
}

.image-upload:hover {
    border-color: var(--primary-color);
}

.upload-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}

#uploadPreview {
    margin-top: 1rem;
    max-width: 100%;
}

#uploadPreview img {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.picgo-settings {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.upload-status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.upload-status.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.upload-status.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.upload-status.warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.upload-status.info {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.generate-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
    box-shadow: var(--shadow-sm);
}

.generate-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.generate-button:active {
    transform: translateY(0);
}

.button-icon {
    margin-right: 0.5rem;
}

.output-container {
    min-height: 300px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.7);
}

.response-area {
    width: 100%;
    height: 100%;
}

.history-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.history-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    background-color: var(--card-bg);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.history-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.history-item .timestamp {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.history-item .prompt {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item .model {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    background-color: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-sm);
    display: inline-block;
}

.history-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.user-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.user-info {
    display: flex;
    align-items: center;
}

.user-badge {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    margin-left: 0.5rem;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
    display: flex;
    align-items: center;
}

.nav-link i {
    margin-right: 0.5rem;
}

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

.flash-messages {
    margin-bottom: 2rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    position: relative;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

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

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(99, 102, 241, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loading-text {
    margin-left: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* 视频播放器样式 */
.video-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 比例 */
    margin-bottom: 1rem;
    background-color: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-section {
        grid-template-columns: 1fr;
    }
    
    .history-list {
        grid-template-columns: 1fr;
    }
    
    .user-navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-actions {
        width: 100%;
        justify-content: space-between;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.5);
}

/* 工具提示 */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: white;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed);
    z-index: 10;
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 添加页脚样式 */
.app-footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 添加按钮动画效果 */
.generate-button {
    position: relative;
    overflow: hidden;
}

.generate-button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(100, 100);
        opacity: 0;
    }
}

.generate-button:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

/* Toast通知系统 */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    padding: 1rem;
    margin-bottom: 0.75rem;
    border-radius: var(--radius-md);
    background-color: var(--card-bg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    min-width: 250px;
    max-width: 350px;
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast-icon {
    margin-right: 0.75rem;
    font-size: 1.25rem;
}

.toast-content {
    flex-grow: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.toast-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.25rem;
    margin-left: 0.5rem;
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-success .toast-icon {
    color: var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

.toast-error .toast-icon {
    color: var(--danger-color);
}

.toast-warning {
    border-left: 4px solid var(--warning-color);
}

.toast-warning .toast-icon {
    color: var(--warning-color);
}

.toast-info {
    border-left: 4px solid var(--info-color);
}

.toast-info .toast-icon {
    color: var(--info-color);
}