/**
 * LightSNS UI Components Styles
 * Dialog, Toast, Modal, Prompt, Progress, Button
 *
 * @package LightSNS
 * @version 1.0.0
 */

/* ===== CSS Variables ===== */
:root {
    /* 主色调 */
    --ls-primary: #3b82f6;
    --ls-primary-hover: #2563eb;
    --ls-primary-light: #eff6ff;
    --ls-secondary: #6b7280;
    --ls-success: #10b981;
    --ls-success-light: #ecfdf5;
    --ls-warning: #f59e0b;
    --ls-warning-light: #fffbeb;
    --ls-danger: #ef4444;
    --ls-danger-light: #fef2f2;

    /* 背景色 */
    --ls-bg: #f8fafc;
    --ls-bg-hover: #f1f5f9;
    --ls-card-bg: #ffffff;

    /* 边框 */
    --ls-border: #e5e7eb;
    --ls-border-light: #f3f4f6;

    /* 文字颜色 */
    --ls-text: #1f2937;
    --ls-text-secondary: #4b5563;
    --ls-text-muted: #9ca3af;

    /* 圆角 */
    --ls-radius: 6px;
    --ls-radius-sm: 4px;
    --ls-radius-lg: 8px;

    /* 阴影 */
    --ls-shadow: none;
    --ls-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --ls-shadow-lg: 0 2px 8px rgba(0, 0, 0, 0.06);

    /* 过渡动画 */
    --ls-transition: 0.15s ease;
}

/* ===== Toast 消息提示 ===== */
.ls-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 18px;
    border-radius: var(--ls-radius-sm);
    color: #fff;
    font-size: 13px;
    z-index: 99999;
    transform: translateX(120%);
    transition: transform 0.2s ease;
}

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

.ls-toast-success {
    background: var(--ls-success);
}

.ls-toast-error {
    background: var(--ls-danger);
}

.ls-toast-warning {
    background: var(--ls-warning);
}

.ls-toast-info {
    background: var(--ls-primary);
}

/* ===== Dialog 对话框 ===== */
.ls-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 10002;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--ls-transition);
}

.ls-dialog-overlay.show {
    opacity: 1;
}

.ls-dialog {
    background: var(--ls-card-bg);
    border-radius: var(--ls-radius-lg);
    border: 1px solid var(--ls-border);
    min-width: 380px;
    max-width: 90%;
    transform: translateY(-16px);
    transition: transform var(--ls-transition);
}

.ls-dialog-overlay.show .ls-dialog {
    transform: translateY(0);
}

.ls-dialog-header {
    padding: 18px 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ls-dialog-icon {
    flex-shrink: 0;
}

.ls-dialog-icon i {
    font-size: 20px;
}

.ls-dialog-title {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--ls-text);
    margin: 0;
}

.ls-dialog-close {
    background: none;
    border: none;
    font-size: 16px;
    color: var(--ls-text-muted);
    cursor: pointer;
    padding: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ls-radius-sm);
    transition: all var(--ls-transition);
    margin: -4px -6px 0 0;
}

.ls-dialog-close:hover {
    background: var(--ls-bg);
    color: var(--ls-text);
}

.ls-dialog-body {
    padding: 12px 20px 20px;
    color: var(--ls-text-secondary);
    font-size: 13px;
    line-height: 1.5;
}

.ls-dialog-footer {
    padding: 0 20px 18px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.ls-dialog-btn {
    padding: 8px 18px;
    border-radius: var(--ls-radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--ls-border);
    background: var(--ls-card-bg);
    color: var(--ls-text-secondary);
    transition: all var(--ls-transition);
}

.ls-dialog-btn:hover {
    background: var(--ls-bg);
    border-color: var(--ls-border);
}

.ls-dialog-btn-primary {
    background: var(--ls-primary);
    color: #fff;
    border-color: var(--ls-primary);
}

.ls-dialog-btn-primary:hover {
    background: var(--ls-primary-hover);
    border-color: var(--ls-primary-hover);
}

/* ===== Prompt 输入弹窗 ===== */
.ls-prompt-dialog {
    width: 420px;
    max-width: 90vw;
}

.ls-prompt-body {
    padding: 16px 20px 20px;
}

.ls-prompt-desc {
    margin: 0 0 12px;
    color: var(--ls-text-muted);
    font-size: 13px;
    line-height: 1.5;
}

.ls-prompt-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-sm);
    background: var(--ls-bg);
    color: var(--ls-text);
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ls-prompt-input:focus {
    outline: none;
    border-color: var(--ls-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.ls-prompt-input::placeholder {
    color: var(--ls-text-muted);
}

.ls-prompt-counter {
    margin-top: 8px;
    text-align: right;
    font-size: 12px;
    color: var(--ls-text-muted);
}

.ls-prompt-current {
    color: var(--ls-text);
}

/* ===== Modal 通用弹窗 ===== */
.ls-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10002;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.ls-modal.show {
    opacity: 1;
    visibility: visible;
}

.ls-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.ls-modal-content {
    position: relative;
    background: var(--ls-card-bg);
    border-radius: var(--ls-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}

.ls-modal.show .ls-modal-content {
    transform: translateY(0);
}

.ls-modal-sm {
    width: 400px;
    max-width: 95vw;
}

.ls-modal-md {
    width: 550px;
    max-width: 95vw;
}

.ls-modal-lg {
    width: 700px;
    max-width: 95vw;
}

.ls-modal-xl {
    width: 95vw;
    max-width: 1200px;
}

.ls-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--ls-border);
}

.ls-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ls-modal-header h3 i {
    color: var(--ls-primary);
}

.ls-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--ls-text-muted);
    cursor: pointer;
    border-radius: var(--ls-radius-sm);
    transition: all var(--ls-transition);
}

.ls-modal-close:hover {
    background: var(--ls-bg);
    color: var(--ls-text);
}

.ls-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.ls-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--ls-border);
}

/* ===== Progress 进度弹窗 ===== */
.ls-progress-bar {
    height: 20px;
    background: var(--ls-bg);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 15px;
}

.ls-progress-fill {
    height: 100%;
    background: var(--ls-primary);
    width: 0%;
    transition: width 0.3s;
}

.ls-progress-message {
    margin: 0;
    color: var(--ls-text-secondary);
}

/* ===== Button 按钮 ===== */
.ls-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--ls-radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--ls-transition);
    text-decoration: none;
    outline: none;
}

.ls-btn:active {
    transform: translateY(1px);
}

.ls-btn:focus-visible {
    box-shadow: 0 0 0 2px var(--ls-primary-light);
}

.ls-btn-primary {
    background: var(--ls-primary);
    color: #fff;
    border: none;
}

.ls-btn-primary:hover {
    background: var(--ls-primary-hover);
}

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

.ls-btn-secondary:hover {
    background: var(--ls-bg-hover);
    color: var(--ls-text);
    border-color: var(--ls-border);
}

.ls-btn-danger {
    background: var(--ls-danger);
    color: #fff;
    border: none;
}

.ls-btn-danger:hover {
    background: #dc2626;
}

.ls-btn-success {
    background: var(--ls-success);
    color: #fff;
    border: none;
}

.ls-btn-success:hover {
    background: #059669;
}

.ls-btn-warning {
    background: var(--ls-warning);
    color: #fff;
    border: none;
}

.ls-btn-warning:hover {
    background: #d97706;
}

.ls-btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ls-btn-ghost {
    background: transparent;
    color: var(--ls-text-secondary);
    border: 1px solid var(--ls-border);
}

.ls-btn-ghost:hover {
    background: var(--ls-bg);
    color: var(--ls-primary);
    border-color: var(--ls-primary);
}

.ls-btn-text {
    background: transparent;
    color: var(--ls-primary);
    border: none;
    padding: 8px 12px;
}

.ls-btn-text:hover {
    background: var(--ls-primary-light);
}

.ls-btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.ls-btn-lg {
    padding: 12px 24px;
    font-size: 15px;
}

.ls-btn-block {
    display: flex;
    width: 100%;
}

.ls-btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ls-radius-sm);
    background: transparent;
    color: var(--ls-text-muted);
    border: none;
    cursor: pointer;
    transition: all var(--ls-transition);
}

.ls-btn-icon:hover {
    background: var(--ls-bg);
    color: var(--ls-text);
}

.ls-btn-icon.danger:hover {
    background: var(--ls-danger-light);
    color: var(--ls-danger);
}

/* ===== Loading 加载动画 ===== */
.ls-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 50px 20px;
}

.ls-loading-spinner {
    width: 36px;
    height: 28px;
    display: flex;
}

.ls-loading-spinner > div {
    width: 3px;
    height: 28px;
    margin: 2px;
    border-radius: 0;
    animation: ls-line-scale 1.2s infinite ease;
    background-color: var(--ls-primary);
}

.ls-loading-spinner > div:nth-child(1) {
    animation-delay: -1.2s;
}

.ls-loading-spinner > div:nth-child(2) {
    animation-delay: -1.1s;
}

.ls-loading-spinner > div:nth-child(3) {
    animation-delay: -1s;
}

.ls-loading-spinner > div:nth-child(4) {
    animation-delay: -0.9s;
}

.ls-loading-spinner > div:nth-child(5) {
    animation-delay: -0.8s;
}

@keyframes ls-line-scale {

    0%,
    40%,
    100% {
        transform: scaleY(0.4);
    }

    20% {
        transform: scaleY(1);
    }
}

.ls-loading-text {
    margin-top: 16px;
    color: var(--ls-text-muted);
    font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .ls-dialog {
        min-width: 90%;
    }

    .ls-toast {
        right: 12px;
        left: 12px;
        bottom: 12px;
    }
}

/* ===== Dropdown 下拉菜单 (NaiveUI Style) ===== */
.ls-dropdown {
    position: fixed;
    z-index: 10000;
    min-width: 140px;
    padding: 4px;
    background: var(--ls-card-bg);
    border-radius: 6px;
    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.12), 0 3px 6px rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: scale(0.92) translateY(-4px);
    transform-origin: top center;
    transition: opacity 0.15s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.15s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.15s;
}

.ls-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}

.ls-dropdown.ls-dropdown-bottom-start {
    transform-origin: top left;
}

.ls-dropdown.ls-dropdown-bottom-end {
    transform-origin: top right;
}

.ls-dropdown.ls-dropdown-top-start {
    transform-origin: bottom left;
}

.ls-dropdown.ls-dropdown-top-end {
    transform-origin: bottom right;
}

/* 下拉菜单项 */
.ls-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin: 2px 0;
    font-size: 14px;
    color: var(--ls-text);
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
    user-select: none;
}

.ls-dropdown-item:first-child {
    margin-top: 0;
}

.ls-dropdown-item:last-child {
    margin-bottom: 0;
}

.ls-dropdown-item:hover {
    background: var(--ls-primary-light);
    color: var(--ls-primary);
}

.ls-dropdown-item:active {
    background: rgba(59, 130, 246, 0.15);
}

/* 图标 */
.ls-dropdown-item i {
    font-size: 18px;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.75;
    transition: opacity 0.1s;
}

.ls-dropdown-item:hover i {
    opacity: 1;
}

/* 文字 */
.ls-dropdown-item span {
    flex: 1;
    white-space: nowrap;
}

/* 禁用状态 */
.ls-dropdown-item.disabled {
    color: var(--ls-text-muted);
    cursor: not-allowed;
    pointer-events: none;
}

.ls-dropdown-item.disabled:hover {
    background: transparent;
}

/* 危险操作 */
.ls-dropdown-item.danger {
    color: var(--ls-danger);
}

.ls-dropdown-item.danger i {
    opacity: 1;
}

.ls-dropdown-item.danger:hover {
    background: var(--ls-danger-light);
    color: var(--ls-danger);
}

/* 成功状态 */
.ls-dropdown-item.success {
    color: var(--ls-success);
}

.ls-dropdown-item.success:hover {
    background: var(--ls-success-light);
    color: var(--ls-success);
}

/* 警告状态 */
.ls-dropdown-item.warning {
    color: var(--ls-warning);
}

.ls-dropdown-item.warning:hover {
    background: var(--ls-warning-light);
    color: var(--ls-warning);
}

/* 分隔线 */
.ls-dropdown-divider {
    height: 1px;
    background: var(--ls-border-light);
    margin: 6px 4px;
}

/* 分组标题 */
.ls-dropdown-header {
    padding: 6px 12px 4px;
    font-size: 12px;
    font-weight: 500;
    color: var(--ls-text-muted);
    user-select: none;
}

/* 选中状态 */
.ls-dropdown-item.selected {
    background: var(--ls-primary-light);
    color: var(--ls-primary);
}

.ls-dropdown-item.selected::after {
    content: '\eb7b';
    font-family: 'remixicon';
    margin-left: auto;
    font-size: 16px;
}

/* 带箭头的子菜单 */
.ls-dropdown-item.has-submenu::after {
    content: '\ea6e';
    font-family: 'remixicon';
    margin-left: auto;
    font-size: 14px;
    opacity: 0.5;
}

/* 快捷键提示 */
.ls-dropdown-item .ls-shortcut {
    margin-left: auto;
    font-size: 12px;
    color: var(--ls-text-muted);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .ls-dropdown {
        background: #2c2c2c;
        box-shadow: 0 3px 14px rgba(0, 0, 0, 0.4), 0 3px 6px rgba(0, 0, 0, 0.3);
    }
}

/* ===== Popover 气泡弹出层 ===== */
.ls-popover {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.15s, transform 0.15s;
}

.ls-popover.show {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Lightbox 图片灯箱 ===== */
.ls-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    user-select: none;
    -webkit-user-select: none;
}

.ls-lightbox.show {
    opacity: 1;
    visibility: visible;
}

.ls-lightbox-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.92);
}

/* 工具栏 */
.ls-lightbox-toolbar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 3;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3), transparent);
}

.ls-lightbox-counter {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    font-weight: 500;
}

.ls-lightbox-actions {
    display: flex;
    align-items: center;
    gap: 2px;
}

.ls-lightbox-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.75);
    font-size: 16px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.15s, color 0.15s;
}

.ls-lightbox-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

/* 图片展示区 */
.ls-lightbox-stage {
    position: absolute;
    top: 50px;
    left: 0;
    right: 0;
    bottom: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    z-index: 1;
}

.ls-lightbox-image {
    max-width: 90%;
    max-height: 100%;
    object-fit: contain;
    cursor: zoom-in;
    transition: opacity 0.2s, transform 0.15s;
    will-change: transform;
}

.ls-lightbox-image[style*="scale"] {
    cursor: grab;
}

.ls-lightbox-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 28px;
    display: none;
}

/* 导航按钮 */
.ls-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 36px;
    cursor: pointer;
    z-index: 2;
    transition: color 0.15s, background 0.15s;
    border-radius: 6px;
}

.ls-lightbox-nav:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.ls-lightbox-prev {
    left: 10px;
}

.ls-lightbox-next {
    right: 10px;
}

/* 说明文字 */
.ls-lightbox-caption {
    position: absolute;
    bottom: 90px;
    left: 0;
    right: 0;
    text-align: center;
    padding: 10px 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    z-index: 3;
    background: linear-gradient(to top, rgba(0,0,0,0.2), transparent);
    display: none;
}

/* 缩略图栏 */
.ls-lightbox-thumbs {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 16px;
    z-index: 3;
    overflow-x: auto;
    overflow-y: hidden;
    background: linear-gradient(to top, rgba(0,0,0,0.4), transparent);
    scrollbar-width: none;
}

.ls-lightbox-thumbs::-webkit-scrollbar {
    display: none;
}

.ls-lightbox-thumb {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.5;
    border: 2px solid transparent;
    transition: opacity 0.15s, border-color 0.15s;
}

.ls-lightbox-thumb:hover {
    opacity: 0.8;
}

.ls-lightbox-thumb.active {
    opacity: 1;
    border-color: #fff;
}

.ls-lightbox-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 响应式 */
@media (max-width: 768px) {
    .ls-lightbox-image {
        max-width: 100%;
    }

    .ls-lightbox-nav {
        width: 40px;
        height: 60px;
        font-size: 28px;
    }

    .ls-lightbox-prev {
        left: 4px;
    }

    .ls-lightbox-next {
        right: 4px;
    }

    .ls-lightbox-toolbar {
        padding: 0 10px;
    }

    .ls-lightbox-btn {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .ls-lightbox-thumbs {
        height: 64px;
        gap: 4px;
        padding: 0 10px;
    }

    .ls-lightbox-thumb {
        width: 42px;
        height: 42px;
    }

    .ls-lightbox-stage {
        bottom: 64px;
    }

    .ls-lightbox-caption {
        bottom: 74px;
    }
}