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

:root {
    --primary-color: #ff0050;
    --primary-dark: #cc0040;
    --primary-light: #ff3370;
    --accent-color: #00d4ff;
    --bg-dark: #0a0a0f;
    --bg-card: rgba(20, 20, 30, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: rgba(255, 255, 255, 0.1);
    --success-color: #00ff88;
    --error-color: #ff4466;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-color);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-color);
    bottom: -50px;
    left: -50px;
    animation-delay: -5s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: var(--primary-light);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.card {
    width: 100%;
    max-width: 500px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.header {
    position: relative;
    text-align: center;
    margin-bottom: 32px;
}

.logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    animation: pulse 2s ease-in-out infinite;
}

.logo svg {
    width: 100%;
    height: 100%;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 用户信息 */
.user-info {
    position: absolute;
    top: 40px;
    right: 40px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.user-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-role {
    font-size: 11px;
    color: var(--text-secondary);
}

.logout-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logout-btn:hover {
    background: rgba(255, 68, 102, 0.1);
    color: var(--error-color);
}

.logout-btn svg {
    width: 18px;
    height: 18px;
}

.input-section {
    margin-bottom: 24px;
}

.input-wrapper {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

input {
    flex: 1;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s ease;
    outline: none;
}

input:focus {
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

input::placeholder {
    color: var(--text-secondary);
}

.download-btn {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: 16px;
    color: white;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 100px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 0, 80, 0.4);
}

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

.download-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-loader svg {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.quick-link {
    text-align: center;
    padding: 10px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.quick-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--primary-light);
}

.progress-section {
    margin-bottom: 24px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 3px;
    width: 0%;
    transition: width 0.3s ease;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.progress-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.result-section {
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    background: rgba(0, 255, 136, 0.05);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 16px;
    padding: 24px;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    color: var(--success-color);
}

.result-header svg {
    width: 24px;
    height: 24px;
}

.result-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.video-info {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.video-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.video-info p {
    font-size: 13px;
    color: var(--text-secondary);
}

.result-item {
    margin-bottom: 16px;
}

.result-item:last-of-type {
    margin-bottom: 20px;
}

.result-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.result-label svg {
    width: 16px;
    height: 16px;
}

.result-value {
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-link {
    flex: 1;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 13px;
    text-decoration: none;
    word-break: break-all;
    transition: all 0.3s ease;
}

.result-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--primary-light);
}

.copy-btn {
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.copy-btn svg {
    width: 16px;
    height: 16px;
}

.reset-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--success-color) 0%, #00cc6a 100%);
    border: none;
    border-radius: 12px;
    color: #000;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.reset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.error-section {
    animation: shake 0.5s ease-out;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

.error-card {
    background: rgba(255, 68, 102, 0.05);
    border: 1px solid rgba(255, 68, 102, 0.2);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
}

.error-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--error-color);
}

.error-icon svg {
    width: 100%;
    height: 100%;
}

.error-card h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--error-color);
    margin-bottom: 12px;
}

.error-message {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.retry-btn {
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--error-color) 0%, #cc3355 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 68, 102, 0.3);
}

.footer {
    margin-top: 40px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 24px;
    color: var(--text-primary);
    font-size: 14px;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

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

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

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

/* Cookie 状态 */
.cookie-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.cookie-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 10px;
}

.cookie-indicator.active {
    background: var(--success-color);
    box-shadow: 0 0 10px var(--success-color);
}

.cookie-indicator.inactive {
    background: var(--text-secondary);
}

.cookie-text {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
}

.cookie-settings-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cookie-settings-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.cookie-settings-btn svg {
    width: 18px;
    height: 18px;
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-body {
    padding: 20px;
    max-height: 50vh;
    overflow-y: auto;
}

.modal-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.cookie-input-group {
    margin-bottom: 16px;
}

.cookie-input-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

#cookieInput {
    width: 100%;
    min-height: 150px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 12px;
    font-family: monospace;
    resize: vertical;
    outline: none;
}

#cookieInput:focus {
    border-color: var(--primary-color);
}

.cookie-help {
    margin-top: 16px;
}

.cookie-help details {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 12px;
}

.cookie-help summary {
    font-size: 12px;
    color: var(--primary-light);
    cursor: pointer;
    user-select: none;
}

.cookie-help ol {
    margin-top: 12px;
    padding-left: 20px;
}

.cookie-help li {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.5;
}

.modal-footer {
    display: flex;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.delete-cookie-btn {
    flex: 1;
    padding: 12px;
    background: rgba(255, 68, 102, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 10px;
    color: var(--error-color);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.delete-cookie-btn:hover {
    background: var(--error-color);
    color: white;
}

.save-cookie-btn {
    flex: 2;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.save-cookie-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 0, 80, 0.4);
}

@media (max-width: 480px) {
    .card {
        padding: 24px;
    }

    .header h1 {
        font-size: 24px;
    }

    .input-wrapper {
        flex-direction: column;
    }

    .download-btn {
        width: 100%;
    }

    .modal-content {
        max-height: 90vh;
    }

    .modal-footer {
        flex-direction: column;
    }

    .delete-cookie-btn,
    .save-cookie-btn {
        width: 100%;
    }
}

/* 分辨率选择按钮 */
.fetch-formats-btn {
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fetch-formats-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

.fetch-formats-btn svg {
    width: 20px;
    height: 20px;
}

/* 分辨率选择区域 */
.format-section {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 12px;
    animation: slideDown 0.3s ease;
}

/* 视频信息预览 */
.video-info-preview {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 12px;
}

.video-info-preview h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-info-preview p {
    font-size: 12px;
    color: var(--text-secondary);
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 300px;
    }
}

.format-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.clear-format-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clear-format-btn:hover {
    background: rgba(255, 68, 102, 0.1);
    color: var(--error-color);
}

.clear-format-btn svg {
    width: 14px;
    height: 14px;
}

.format-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

/* 自定义滚动条 */
.format-list::-webkit-scrollbar {
    width: 6px;
}

.format-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.format-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.format-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.format-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    position: relative;
}

.format-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 0, 80, 0.3);
}

.format-item.selected {
    background: rgba(255, 0, 80, 0.15);
    border-color: var(--primary-color);
}

.format-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.format-resolution {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.format-details {
    font-size: 11px;
    color: var(--text-secondary);
}

.format-check {
    position: absolute;
    top: 6px;
    right: 6px;
    opacity: 0;
    transition: all 0.3s ease;
}

.format-item.selected .format-check {
    opacity: 1;
}

.format-check svg {
    width: 14px;
    height: 14px;
    color: var(--primary-color);
}

/* 平台选择器 */
.platform-selector {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.platform-btn {
    flex: 1;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.platform-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 0, 80, 0.3);
}

.platform-btn.active {
    background: rgba(255, 0, 80, 0.15);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

.platform-btn svg {
    width: 18px;
    height: 18px;
}

/* Cookie 状态 - 更新 */
.cookie-status {
    display: flex;
    flex-direction: column;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.cookie-platform-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.cookie-tab {
    flex: 1;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cookie-tab:hover {
    background: rgba(255, 255, 255, 0.06);
}

.cookie-tab.active {
    background: rgba(255, 0, 80, 0.15);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

.cookie-status-content {
    display: flex;
    align-items: center;
    gap: 10px;
}