/* 引入 Google Fonts - Outfit 字体，带来现代科技感 */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --accent-blue: #0284c7; /* 深天空蓝 */
    --accent-purple: #7c3aed; /* 优雅紫 */
    --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
    --accent-gradient-purple: linear-gradient(135deg, #7c3aed 0%, #db2777 100%);
    --text-primary: #0f172a; /* 极深蓝灰，非常柔和的纯黑替代 */
    --text-secondary: #334155; /* 加深次要字体颜色（从 #475569 到 #334155）以提升可读性 */
    --glass-bg: #ffffff;      /* 纯白卡片底色，消除半透明混合造成的模糊感 */
    --glass-border: #cbd5e1;  /* 实色边框（#cbd5e1），增加表格和按钮在白色背景下的边缘对比度 */
    --glass-border-light: #e2e8f0; /* 更柔和的分隔实线 */
    --glass-shadow: rgba(15, 23, 42, 0.08);
    --color-success: #10b981;
    --color-error: #ef4444;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 10% 10%, rgba(56, 189, 248, 0.02) 0px, transparent 50%),
        radial-gradient(at 90% 90%, rgba(124, 58, 237, 0.02) 0px, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* 导航栏样式 */
header {
    background: #ffffff;
    border-bottom: 1px solid var(--glass-border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(56, 189, 248, 0.1);
}

.logo-dot {
    width: 10px;
    height: 10px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-blue);
    display: inline-block;
    animation: pulse 2s infinite;
}

nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

nav a:hover, nav a.active {
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.04);
    box-shadow: inset 0 0 1px 1px var(--glass-border);
}

/* 主体内容布局 */
main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 3rem auto;
    padding: 0 2rem;
}

/* 卡片容器样式 */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border-light);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    box-shadow: 0 20px 35px -5px rgba(0, 0, 0, 0.08), 0 0 2px 1px rgba(2, 132, 199, 0.1);
    border-color: var(--accent-blue);
}

/* 表单元素样式 */
.form-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    background: var(--accent-gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1.25rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-group input, .form-group select {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem 1.25rem 1rem 3rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-smooth);
    outline: none;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.15), inset 0 0 5px rgba(56, 189, 248, 0.05);
}

/* 按钮样式 */
.btn-primary {
    background: var(--accent-gradient);
    border: none;
    border-radius: 12px;
    color: #ffffff;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem 2rem;
    transition: var(--transition-smooth);
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 8px 20px rgba(56, 189, 248, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(56, 189, 248, 0.25);
    filter: brightness(1.05);
}

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

.btn-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    padding: 1rem 2rem;
    transition: var(--transition-smooth);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    background: rgba(15, 23, 42, 0.02);
    border-color: var(--text-secondary);
}

/* 结果卡片展示 */
.result-section {
    margin-top: 2rem;
    border-radius: 16px;
    background: #f8fafc;
    border: 1px dashed var(--glass-border);
    padding: 1.5rem;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.result-empty {
    color: var(--text-secondary);
    text-align: center;
    font-style: italic;
    font-size: 0.95rem;
}

.result-content {
    display: none;
    animation: fadeIn 0.4s ease-out forwards;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
}

.result-title {
    font-weight: 600;
    color: var(--accent-blue);
    font-size: 1.1rem;
}

.result-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.code-display-box {
    background: rgba(2, 132, 199, 0.05);
    border: 1px solid rgba(2, 132, 199, 0.15);
    border-radius: 12px;
    padding: 1.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-align: center;
    color: var(--accent-blue);
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}

.code-copy-btn {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    letter-spacing: normal;
    transition: var(--transition-smooth);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.code-copy-btn:hover {
    color: var(--text-primary);
    background: #f1f5f9;
}

.full-msg-box {
    background: #f1f5f9;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 1rem;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-all;
}

/* 分栏双卡片布局 */
.query-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .query-grid {
        grid-template-columns: 1fr;
    }
}

/* 后台表格 */
.table-container {
    width: 100%;
    overflow-x: auto;
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid var(--glass-border-light);
    margin-top: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 1rem 1.5rem;
}

th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--glass-border);
}

td {
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--glass-border-light);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
}

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

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

/* 后台表格操作按钮 */
.action-btn-edit {
    background: #f1f5f9;
    border: 1px solid var(--glass-border-light);
    color: var(--text-primary);
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-right: 0.5rem;
}
.action-btn-edit:hover {
    background: #cbd5e1;
    border-color: var(--glass-border);
}

.action-btn-delete {
    background: #fef2f2;
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--color-error);
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.action-btn-delete:hover {
    background: var(--color-error);
    border-color: var(--color-error);
    color: #ffffff;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
}

.modal-content {
    background: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    position: relative;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    animation: slideUp 0.3s ease-out forwards;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* 全局提示 Toast */
.toast-container {
    position: fixed;
    top: 5.5rem;
    right: 2rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: #ffffff;
    border-left: 4px solid var(--accent-blue);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    min-width: 300px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease-out forwards;
    border: 1px solid var(--glass-border);
    border-left-width: 4px;
}

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

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

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    margin-left: 1rem;
}

/* 动效关键帧 */
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 10px rgba(2, 132, 199, 0.2); }
    50% { transform: scale(1.2); box-shadow: 0 0 20px rgba(2, 132, 199, 0.5); }
    100% { transform: scale(1); box-shadow: 0 0 10px rgba(2, 132, 199, 0.2); }
}

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

/* 查询等待状态旋转 */
.spinner {
    border: 3px solid rgba(15, 23, 42, 0.1);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border-left-color: var(--accent-blue);
    animation: spin 1s linear infinite;
    display: inline-block;
}

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

/* 管理后台选项卡 */
.tabs-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.5rem;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-bottom: 2px solid transparent;
    transition: var(--transition-smooth);
}

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

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

/* 加载动画骨架屏 */
.skeleton-loader {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}
.skeleton-line {
    height: 16px;
    background: linear-gradient(90deg, rgba(15,23,42,0.03) 25%, rgba(15,23,42,0.08) 50%, rgba(15,23,42,0.03) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: 4px;
}
.skeleton-line.short { width: 40%; }
.skeleton-line.medium { width: 70%; }
.skeleton-line.long { width: 100%; }

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

/* 首页双栏迷你邮件列表样式 */
.dual-mail-list {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    border-top: 1px dashed var(--glass-border);
    padding-top: 1.5rem;
}

.mail-list-col {
    flex: 1;
    min-width: 0;
}

.col-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.col-title.inbox-title {
    color: var(--accent-blue);
}

.col-title.junk-title {
    color: var(--color-error);
}

.mini-mail-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 250px;
    overflow-y: auto;
    padding-right: 4px;
}

/* 美化滚动条 */
.mini-mail-items::-webkit-scrollbar {
    width: 4px;
}
.mini-mail-items::-webkit-scrollbar-thumb {
    background: rgba(15, 23, 42, 0.1);
    border-radius: 4px;
}
.mini-mail-items::-webkit-scrollbar-thumb:hover {
    background: rgba(15, 23, 42, 0.2);
}

.mini-mail-item {
    background: #f8fafc;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 0.6rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    text-align: left;
}

.mini-mail-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    background: #ffffff;
    border-color: rgba(79, 172, 254, 0.4);
}

.mini-mail-subject {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mini-mail-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.mini-mail-sender {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 60%;
}

.mini-mail-time {
    white-space: nowrap;
}

.mini-mail-preview {
    font-size: 0.7rem;
    color: #64748b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}