/* ===== 全局变量 ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #22c55e;
    
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --bg-input: #1e1e2e;
    
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: #1e293b;
    --border-glow: rgba(99, 102, 241, 0.3);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== 基础样式 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== 粒子背景 ===== */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 70%);
}

#particles-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(99, 102, 241, 0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(16, 185, 129, 0.3), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.2), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(99, 102, 241, 0.2), transparent),
        radial-gradient(1px 1px at 160px 120px, rgba(255, 255, 255, 0.1), transparent);
    background-size: 200px 150px;
    animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
    0% { transform: translateY(0) translateX(0); }
    100% { transform: translateY(-150px) translateX(20px); }
}

/* ===== 主容器 ===== */
.main-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== 头部导航 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
    color: white;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.nav-link.active {
    color: var(--primary-light);
    background: rgba(99, 102, 241, 0.1);
}

.nav-icon {
    font-size: 1.1rem;
}

/* ===== 内容区 ===== */
.content {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ===== Section ===== */
.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

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

.section-header {
    margin-bottom: 2rem;
}

.section-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1rem;
}

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.stat-trend {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-weight: 500;
}

.stat-trend.up {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.stat-trend.down {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* ===== 卡片 ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
}

.card-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

/* ===== 表格 ===== */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.2);
}

.data-table tr:hover td {
    background: var(--bg-card-hover);
}

.data-table td {
    font-size: 0.9rem;
}

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
    width: 100%;
}

.btn-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

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

.btn-icon-left {
    font-size: 1.1rem;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* ===== 搜索框 ===== */
.search-input {
    padding: 0.625rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    width: 200px;
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    width: 250px;
}

/* ===== 活动列表 ===== */
.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.activity-item:hover {
    background: var(--bg-card-hover);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.875rem;
}

.activity-icon.success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.activity-icon.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.activity-icon.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.activity-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.activity-text {
    font-size: 0.9rem;
}

.activity-email {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===== 注册区域 ===== */
.register-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.register-form {
    padding: 1.5rem;
}

/* ===== 进度条 ===== */
.progress-container {
    padding: 1.5rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.progress-bar {
    height: 8px;
    background: var(--bg-input);
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 999px;
    transition: width 0.3s ease;
}

/* ===== 日志容器 ===== */
.log-container {
    max-height: 300px;
    overflow-y: auto;
    padding: 1rem;
    margin: 0 1.5rem 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.log-entry {
    padding: 0.25rem 0;
    color: var(--text-muted);
}

.log-entry.success {
    color: var(--success);
}

.log-entry.error {
    color: var(--danger);
}

.log-entry.info {
    color: var(--primary-light);
}

/* ===== 设置 ===== */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.settings-form {
    padding: 1.5rem;
}

.import-export-actions {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ===== 状态栏 ===== */
.footer {
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
}

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-dot.online {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== Toast ===== */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
    max-width: 350px;
}

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

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

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== 状态徽章 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 999px;
}

.badge.success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.badge.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

/* ===== 操作按钮组 ===== */
.action-btns {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-card);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .register-grid,
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .register-layout {
        flex-direction: column;
    }
    
    .terminal-container {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 0.5rem;
    }
    
    .content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .card-actions {
        width: 100%;
    }
    
    .search-input {
        width: 100%;
    }
    
    .register-control-panel {
        width: 100%;
    }
    
    .terminal-container {
        height: 350px;
    }
}

/* ===== 注册页面布局 ===== */
.register-layout {
    display: flex;
    gap: 1.5rem;
    height: calc(100vh - 280px);
    min-height: 600px;
}

.register-control-panel {
    width: 320px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.progress-stats {
    display: flex;
    justify-content: space-around;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    margin: 0 1.5rem 1.5rem;
    border-radius: var(--radius-sm);
}

.progress-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.progress-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.progress-stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

.progress-stat-value.success {
    color: var(--success);
}

.progress-stat-value.error {
    color: var(--danger);
}

/* ===== 终端控制台 ===== */
.terminal-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: #161b22;
    border-bottom: 1px solid #30363d;
}

.terminal-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #c9d1d9;
}

.terminal-icon {
    font-size: 1rem;
}

.terminal-actions {
    display: flex;
    gap: 0.5rem;
}

.terminal-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #21262d;
    border: 1px solid #30363d;
    border-radius: 4px;
    color: #8b949e;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.75rem;
}

.terminal-btn:hover {
    background: #30363d;
    color: #c9d1d9;
}

.terminal-body {
    flex: 1;
    overflow-y: auto;
    background: #0d1117;
}

.terminal-output {
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.6;
}

.terminal-line {
    padding: 0.125rem 0;
    white-space: pre-wrap;
    word-break: break-all;
}

.terminal-line .terminal-timestamp {
    color: #6e7681;
    margin-right: 0.5rem;
}

.terminal-line .terminal-level {
    font-weight: 600;
    margin-right: 0.25rem;
}

.terminal-line .terminal-level.info {
    color: #58a6ff;
}

.terminal-line .terminal-level.success {
    color: #3fb950;
}

.terminal-line .terminal-level.error {
    color: #f85149;
}

.terminal-line .terminal-level.warning {
    color: #d29922;
}

.terminal-line .terminal-message {
    color: #c9d1d9;
}

.terminal-line.info {
    border-left: 2px solid #58a6ff;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.terminal-line.success {
    border-left: 2px solid #3fb950;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.terminal-line.error {
    border-left: 2px solid #f85149;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.terminal-line.warning {
    border-left: 2px solid #d29922;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.terminal-line.system {
    border-left: 2px solid #6e7681;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.terminal-line.system .terminal-message {
    color: #6e7681;
}

.terminal-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: #161b22;
    border-top: 1px solid #30363d;
    font-size: 0.75rem;
}

.terminal-status-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #6e7681;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #6e7681;
}

.status-indicator.connected {
    background: #3fb950;
    box-shadow: 0 0 6px #3fb950;
    animation: pulse 2s infinite;
}

.status-indicator.connecting {
    background: #d29922;
    animation: pulse 1s infinite;
}

.status-indicator.disconnected {
    background: #f85149;
}

/* ===== 终端滚动条 ===== */
.terminal-body::-webkit-scrollbar {
    width: 8px;
}

.terminal-body::-webkit-scrollbar-track {
    background: #0d1117;
}

.terminal-body::-webkit-scrollbar-thumb {
    background: #30363d;
    border-radius: 4px;
}

.terminal-body::-webkit-scrollbar-thumb:hover {
    background: #484f58;
}