/* ============ 全局样式 ============ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #3b82f6;
    --color-secondary: #10b981;
    --color-danger: #ef4444;
    --color-bg: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-border: #e5e7eb;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --spacing: 1rem;
    --radius: 0.5rem;
    --transition: 0.3s ease;
}

body.dark-mode {
    --color-bg: #1f2937;
    --color-bg-secondary: #111827;
    --color-text: #f3f4f6;
    --color-text-light: #d1d5db;
    --color-border: #374151;
    --color-shadow: rgba(0, 0, 0, 0.3);
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
}

/* ============ 容器 ============ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing);
}

/* ============ 导航栏 ============ */
.navbar,
.navbar *,
.navbar-main,
.navbar-menu,
.navbar-menu-list,
.navbar-menu-item,
.navbar-menu-link,
.navbar-right,
.navbar-search,
.navbar-search input,
.btn-icon,
.dropdown-menu,
.dropdown-menu * {
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar {
    background-color: #4a4a4a;
    border-bottom: 1px solid #333;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
    text-orientation: mixed !important;
}

.navbar-main {
    display: flex;
    flex-direction: row !important;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing);
    padding: 0.75rem 0;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-brand {
    flex-shrink: 0;
    white-space: nowrap;
    padding-right: 0.5rem;
}

.navbar-brand .logo {
    font-size: 0.95rem;
    font-weight: bold;
    color: #1dd1a1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-menu {
    flex: 1;
    display: flex;
    flex-direction: row !important;
    justify-content: flex-start;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-menu-list {
    list-style: none;
    display: flex;
    flex-direction: row !important;
    gap: 0;
    margin: 0;
    padding: 0;
    flex-wrap: nowrap;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-menu-item {
    position: relative;
    margin: 0;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-menu-link {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem 0.7rem;
    color: #ffffff;
    text-decoration: none;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border: none;
    background: none;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
    text-orientation: mixed !important;
    white-space: nowrap !important;
}

.navbar-menu-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-menu-link .arrow {
    font-size: 0.6rem;
    display: inline-block;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-right {
    display: flex;
    flex-direction: row !important;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-search {
    width: 140px;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-search input {
    width: 100%;
    padding: 0.4rem 0.5rem;
    border: 1px solid #666;
    border-radius: 4px;
    background-color: #555;
    color: #fff;
    font-size: 0.75rem;
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.navbar-search input::placeholder {
    color: #aaa;
}

.navbar-search input:focus {
    outline: none;
    border-color: #1dd1a1;
    background-color: #555;
}

/* ============ 下拉菜单 ============ */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #f5f5f5;
    border-bottom: 1px solid var(--color-border);
    padding: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    max-height: 60vh;
    overflow-y: auto;
    z-index: 200;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-menu.hidden {
    display: none;
}

.dropdown-category {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-category-title {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 0.5rem;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-tool-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    text-decoration: none;
    color: inherit;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-tool-item:hover {
    background-color: rgba(29, 209, 161, 0.1);
}

.dropdown-tool-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-tool-info {
    flex: 1;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-tool-name {
    font-weight: 500;
    color: var(--color-text);
    font-size: 0.9rem;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.dropdown-tool-desc {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 0.25rem;
    writing-mode: horizontal-tb;
    direction: ltr;
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius);
    transition: background-color var(--transition);
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.btn-icon:hover {
    background-color: var(--color-border);
}

/* ============ 主布局 ============ */
.main {
    display: flex;
    margin-top: calc(var(--spacing) * 1);
    min-height: calc(100vh - 200px);
    width: 100%;
}

/* ============ 工具内容区 ============ */
.tool-content {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius);
    padding: calc(var(--spacing) * 2);
    width: 100%;
    flex: 1;
}

.tool-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing);
    color: var(--color-primary);
}

.tool-description {
    color: var(--color-text-light);
    margin-bottom: calc(var(--spacing) * 1.5);
}

/* ============ 表单元素 ============ */
.form-group {
    margin-bottom: calc(var(--spacing) * 1.5);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group textarea,
.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.form-group textarea {
    min-height: 200px;
    resize: vertical;
}

/* ============ 按钮 ============ */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary:hover {
    opacity: 0.9;
}

.btn-group {
    display: flex;
    gap: var(--spacing);
    margin-top: calc(var(--spacing) * 1.5);
}

/* ============ 模态框 ============ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: var(--color-bg);
    border-radius: var(--radius);
    min-width: 400px;
    max-width: 600px;
    box-shadow: 0 10px 40px var(--color-shadow);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing) calc(var(--spacing) * 1.5);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-light);
}

.modal-body {
    padding: calc(var(--spacing) * 1.5);
}

.setting-item {
    margin-bottom: var(--spacing);
}

.setting-item label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.setting-item input[type="checkbox"] {
    margin-right: 0.5rem;
    cursor: pointer;
}

/* ============ 响应式设计 ============ */
@media (max-width: 1024px) {
    .navbar-menu-list {
        flex-wrap: wrap;
    }

    .navbar-menu-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .navbar-search {
        width: 150px;
    }
}

@media (max-width: 768px) {
    .navbar-main {
        flex-wrap: wrap;
    }

    .navbar-brand {
        flex-basis: 100%;
        margin-bottom: 0.5rem;
    }

    .navbar-menu {
        order: 3;
        flex-basis: 100%;
        display: none;
    }

    .navbar-right {
        order: 2;
        gap: 0.5rem;
    }

    .navbar-search {
        width: 100%;
    }

    .navbar-search input {
        font-size: 0.8rem;
        padding: 0.4rem;
    }

    .dropdown-menu {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .tool-content {
        padding: var(--spacing);
    }

    .modal-content {
        min-width: 90%;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .navbar-brand .logo {
        font-size: 1rem;
    }

    .navbar-menu-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
    }

    .navbar-search {
        width: 100%;
    }

    .dropdown-tool-item {
        padding: 0.5rem;
    }

    .dropdown-tool-icon {
        font-size: 1.2rem;
        width: 1.5rem;
        height: 1.5rem;
    }
}

/* ============ 工具通用样式 ============ */
.tool-section {
    margin-bottom: calc(var(--spacing) * 2);
}

.tool-section h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing);
    color: var(--color-primary);
}

.output-box {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    max-height: 300px;
    overflow-y: auto;
    word-break: break-all;
}

.status-message {
    padding: 0.75rem;
    border-radius: var(--radius);
    margin-top: var(--spacing);
}

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

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

.loading {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ============ 通知弹框 ============ */
.notification-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease-out;
}

.notification-icon {
    font-size: 1.2rem;
    font-weight: bold;
}

.notification-success {
    background-color: #10b981;
    color: white;
}

.notification-error {
    background-color: #ef4444;
    color: white;
}

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

/* ============ 工具网格 ============ */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing);
}

.tool-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing);
    cursor: pointer;
    transition: all var(--transition);
}

.tool-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.tool-card h3 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.tool-card p {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ============ 首页菜单样式 ============ */
.home-container {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 3);
}

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

.home-section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    padding-bottom: var(--spacing);
    border-bottom: 2px solid var(--color-primary);
    margin-bottom: var(--spacing);
}

.home-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing);
}

.tool-card {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    padding: var(--spacing);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px var(--color-shadow);
    border-color: transparent;
}

.tool-card-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    min-width: 60px;
}

.tool-card-content {
    flex: 1;
    min-width: 0;
}

.tool-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    margin-bottom: 0.25rem;
}

.tool-card-description {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============ 首页菜单响应式 ============ */
@media (max-width: 1024px) {
    .home-tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (max-width: 768px) {
    .home-section-title {
        font-size: 1.25rem;
    }

    .home-tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .tool-card {
        flex-direction: column;
        text-align: center;
    }

    .tool-card-icon {
        width: 50px;
        height: 50px;
        min-width: 50px;
    }

    .tool-card-description {
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
    }
}

@media (max-width: 480px) {
    .home-section-title {
        font-size: 1.1rem;
    }

    .home-tools-grid {
        grid-template-columns: 1fr;
    }

    .tool-card {
        padding: 0.75rem;
    }

    .tool-card-icon {
        width: 45px;
        height: 45px;
        min-width: 45px;
    }
}