/* ewt360 可视化中控面板 - 浅色科技风 */
:root {
    --bg-base: #f0f4f8;
    --bg-card: #ffffff;
    --bg-sidebar: #f7f9fc;
    --bg-hover: #eef3f8;
    --border-color: #e0e8f0;
    --border-glow: #00d4aa;
    --border-glow-soft: rgba(0, 212, 170, 0.3);
    --text-primary: #1a2332;
    --text-secondary: #5a6b7d;
    --text-muted: #9aa8b8;
    --accent: #00d4aa;
    --accent-light: #5eead4;
    --accent-dark: #0d9488;
    --accent-bg: rgba(0, 212, 170, 0.08);
    --blue: #3b82f6;
    --blue-light: #93c5fd;
    --blue-bg: rgba(59, 130, 246, 0.08);
    --warn: #f59e0b;
    --warn-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.1);
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 12px rgba(0, 212, 170, 0.15);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }

body {
    font-family: var(--font);
    background: var(--bg-base);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
}

/* 背景科技线条装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

#app { height: 100vh; display: flex; flex-direction: column; position: relative; z-index: 1; }

/* ===== 顶部标题栏 ===== */
.top-bar {
    height: 52px;
    background: var(--bg-card);
    border-bottom: 2px solid var(--border-glow);
    box-shadow: var(--shadow-glow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    flex-shrink: 0;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 0 12px rgba(0, 212, 170, 0.3);
    border: 1px solid rgba(0, 212, 170, 0.3);
}
.logo-text { font-size: 18px; font-weight: 700; color: var(--text-primary); letter-spacing: 1px; }
.logo-version { font-size: 11px; color: var(--accent); background: var(--accent-bg); padding: 2px 8px; border-radius: 10px; border: 1px solid var(--border-glow-soft); }
.top-actions { display: flex; gap: 8px; }

/* ===== 按钮系统 ===== */
.btn {
    padding: 6px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font);
    white-space: nowrap;
}
.btn:hover { border-color: var(--accent); color: var(--accent-dark); box-shadow: 0 0 8px var(--border-glow-soft); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-xs { padding: 2px 8px; font-size: 11px; }
.btn-accent { background: var(--accent); color: white; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-dark); color: white; }
.btn-success { background: var(--success); color: white; border-color: var(--success); }
.btn-success:hover { background: #16a34a; color: white; }
.btn-danger { background: var(--error); color: white; border-color: var(--error); }
.btn-danger:hover { background: #dc2626; color: white; }
.btn-warn { background: var(--warn); color: white; border-color: var(--warn); }
.btn-warn:hover { background: #ca8a04; color: white; }
.btn-disabled { opacity: 0.5 !important; cursor: not-allowed !important; pointer-events: none !important; background: #ccc !important; color: #666 !important; border-color: #ccc !important; box-shadow: none !important; }

/* ===== 主布局 ===== */
.main-layout {
    flex: 1;
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 12px;
    padding: 12px;
    overflow: hidden;
}

/* ===== 面板通用 ===== */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}
.panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.6;
}
.panel-flex { flex: 1; min-height: 0; }
.panel-full { height: 100%; }
.panel-header {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.panel-title { font-weight: 600; font-size: 13px; color: var(--text-primary); }
.panel-count { font-size: 12px; color: var(--accent); background: var(--accent-bg); padding: 1px 8px; border-radius: 10px; }
.panel-body { padding: 12px 14px; flex-shrink: 0; }
.panel-body-scroll { flex: 1; overflow-y: auto; padding: 8px; }

/* ===== 左栏 ===== */
.sidebar-left { display: flex; flex-direction: column; gap: 12px; overflow: hidden; }

.metric-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.metric-row:last-child { margin-bottom: 0; }
.metric-label { font-size: 12px; color: var(--text-secondary); width: 72px; flex-shrink: 0; }
.metric-bar-wrap {
    flex: 1; height: 20px; background: var(--bg-sidebar);
    border-radius: 10px; position: relative; overflow: hidden;
    border: 1px solid var(--border-color);
}
.metric-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-light), var(--accent));
    border-radius: 10px;
    transition: width 0.5s ease;
    box-shadow: 0 0 6px var(--border-glow-soft);
}
.metric-bar-blue { background: linear-gradient(90deg, var(--blue-light), var(--blue)); box-shadow: 0 0 6px rgba(59, 130, 246, 0.3); }
.metric-value {
    position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
    font-size: 11px; font-weight: 600; color: var(--text-primary);
    font-family: var(--mono);
}
.metric-badge {
    font-size: 13px; font-weight: 700; color: var(--accent-dark);
    background: var(--accent-bg); padding: 2px 12px; border-radius: 10px;
    border: 1px solid var(--border-glow-soft);
}
.metric-badge-cyan { color: var(--blue); background: var(--blue-bg); border-color: rgba(59, 130, 246, 0.3); }

/* 账号列表项 */
.acc-item {
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    cursor: pointer;
    transition: all 0.15s;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}
.acc-item:hover { background: var(--bg-hover); border-color: var(--border-color); }
.acc-item.active { background: var(--accent-bg); border-color: var(--border-glow-soft); }
.acc-dot {
    width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
    background: var(--text-muted);
}
.acc-dot.running { background: var(--success); box-shadow: 0 0 6px var(--success); animation: pulse 2s infinite; }
.acc-dot.idle { background: var(--text-muted); }
.acc-dot.error { background: var(--error); }
.acc-dot.done { background: var(--accent); }
.acc-dot.stopped { background: var(--warn); }
.acc-info { flex: 1; min-width: 0; }
.acc-name { font-size: 12px; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.acc-remark { display: block; font-size: 10px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 1px; }
.acc-pct { font-size: 11px; font-weight: 600; color: var(--accent-dark); font-family: var(--mono); flex-shrink: 0; }
.acc-pwd-btn { flex-shrink: 0; padding: 2px 6px !important; font-size: 11px !important; }
.acc-remark-btn { flex-shrink: 0; padding: 2px 8px !important; font-size: 11px !important; }
.acc-start-btn { flex-shrink: 0; padding: 2px 8px !important; font-size: 11px !important; }

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

/* ===== 中栏 ===== */
.content-center { display: flex; flex-direction: column; overflow: hidden; }
.content-header {
    padding: 0 4px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.content-title { font-size: 15px; font-weight: 600; }
.content-actions { display: flex; gap: 8px; }
.cards-container-wrapper {
    flex: 1;
    position: relative;
    min-height: 0;
}
.cards-container {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
    padding: 12px 20px 12px 20px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}
.cards-container::-webkit-scrollbar {
    width: 6px;
}
.cards-container::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}
.cards-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
.cards-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}
.cards-empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

/* 账号进度卡片 */
.acc-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
    transition: box-shadow 0.3s;
    width: 100%;
    flex-shrink: 0;
}
.acc-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
    opacity: 0.8;
}
.acc-card.running { border-color: var(--border-glow-soft); box-shadow: var(--shadow-md), 0 0 16px rgba(0, 212, 170, 0.1); }
.acc-card.error { border-color: rgba(239, 68, 68, 0.3); }
.acc-card.error::before { background: linear-gradient(90deg, var(--error), #fca5a5); }

.card-header {
    padding: 10px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}
.card-header-left { display: flex; align-items: center; gap: 8px; }
.card-header-right { display: flex; align-items: center; gap: 8px; }
.card-mini-progress { display: flex; align-items: center; gap: 6px; }
.card-mini-bar { width: 60px; height: 4px; background: var(--border-color); border-radius: 2px; overflow: hidden; }
.card-mini-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent-light), var(--accent)); border-radius: 2px; transition: width 0.5s ease; }
.card-mini-pct { font-size: 10px; font-weight: 600; color: var(--accent-dark); font-family: var(--mono); }
.card-min-btn { padding: 2px 6px !important; font-size: 12px !important; line-height: 1 !important; }
.card-avatar {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--accent-bg);
    border: 1px solid var(--border-glow-soft);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700; color: var(--accent-dark);
}
.card-name { font-size: 13px; font-weight: 600; }
.card-status {
    font-size: 11px; padding: 2px 8px; border-radius: 10px;
    font-weight: 500;
}
.card-status.running { color: var(--success); background: var(--success-bg); }
.card-status.idle { color: var(--text-muted); background: var(--bg-sidebar); }
.card-status.error { color: var(--error); background: var(--error-bg); }
.card-status.done { color: var(--accent); background: var(--accent-bg); }
.card-status.stopped { color: var(--warn); background: var(--warn-bg); }
.card-status.logging_in { color: var(--blue); background: var(--blue-bg); }

.card-body { padding: 12px 14px; }

/* 总进度条 */
.card-overall {
    margin: 0 -8px 10px -8px;
}
.card-overall-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 4px;
}
.card-overall-label { font-size: 11px; color: var(--text-secondary); }
.card-overall-pct { font-size: 16px; font-weight: 700; color: var(--accent-dark); font-family: var(--mono); }
.progress-bar-wrap {
    height: 8px; background: var(--bg-sidebar);
    border-radius: 4px; overflow: hidden;
    border: 1px solid var(--border-color);
}
.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-light), var(--accent));
    border-radius: 4px;
    transition: width 0.5s ease;
    box-shadow: 0 0 4px var(--border-glow-soft);
}

/* 卡片统计行 */
.card-stats {
    display: flex; gap: 12px; margin-bottom: 10px;
    padding: 6px 0;
    border-bottom: 1px dashed var(--border-color);
}
.card-stat { flex: 1; text-align: center; }
.card-stat-val { font-size: 14px; font-weight: 700; color: var(--text-primary); font-family: var(--mono); }
.card-stat-label { font-size: 10px; color: var(--text-muted); }

/* 课程进度列表 */
.card-courses {
    max-height: 180px;
    overflow-y: auto;
    margin-bottom: 8px;
}
.course-item {
    padding: 4px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
}
.course-icon { width: 14px; text-align: center; flex-shrink: 0; }
.course-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-secondary); }
.course-pct { font-weight: 600; color: var(--accent-dark); font-family: var(--mono); width: 36px; text-align: right; flex-shrink: 0; }
.course-mini-bar {
    width: 50px; height: 4px; background: var(--bg-sidebar);
    border-radius: 2px; overflow: hidden; flex-shrink: 0;
    border: 1px solid var(--border-color);
}
.course-mini-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s;
}
.course-mini-bar-fill.done { background: var(--success); }

/* 卡片日志 */
.card-logs {
    margin-top: 8px;
    background: #fafafa;
    border-radius: 6px;
    border: 1px solid #f0f0f0;
    overflow: hidden;
}
.card-logs-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 8px;
    background: #f5f5f5;
    border-bottom: 1px solid #e8e8e8;
}
.card-logs-title {
    font-size: 11px;
    font-weight: 600;
    color: #333;
    white-space: nowrap;
    flex-shrink: 0;
}
.card-logs-count {
    color: #999;
    font-weight: normal;
    font-size: 10px;
}
.card-logs-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    min-width: 0;
}
.card-logs-list {
    max-height: 120px;
    overflow-y: auto;
    padding: 4px 6px;
}
.card-logs-list::-webkit-scrollbar {
    width: 4px;
}
.card-logs-list::-webkit-scrollbar-track {
    background: #f5f5f5;
}
.card-logs-list::-webkit-scrollbar-thumb {
    background: #d9d9d9;
    border-radius: 2px;
}
.card-logs-list::-webkit-scrollbar-thumb:hover {
    background: #bfbfbf;
}
.card-log-line {
    display: flex;
    gap: 6px;
    align-items: center;
    padding: 2px 0;
    font-size: 11px;
    font-family: Consolas, Monaco, monospace;
    line-height: 1.6;
}
.card-log-time {
    color: #999;
    flex-shrink: 0;
}
.card-log-level {
    flex-shrink: 0;
}
.card-log-msg {
    flex: 1;
    color: #333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.card-log-subject {
    color: #722ed1;
    background: #f9f0ff;
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 10px;
    flex-shrink: 0;
}

/* 科目分组日志样式 */
.log-subject-group {
    border: 1px solid #e0e8f0;
    border-radius: 4px;
    margin: 4px 0;
    overflow: hidden;
}
.log-subject-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: background 0.2s;
}
.log-subject-header:hover {
    opacity: 0.9;
}
.log-subject-arrow {
    font-size: 8px;
    transition: transform 0.2s;
}
.log-subject-content {
    padding: 4px 8px;
    background: #fafbfc;
}
.log-subject-count {
    background: rgba(255, 255, 255, 0.3);
    padding: 0 5px;
    border-radius: 10px;
    font-size: 10px;
    margin-left: auto;
}

/* 内存清理选项样式 */
.clean-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.clean-option {
    display: flex;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--bg-card);
}
.clean-option:hover {
    border-color: var(--accent);
    background: var(--accent-bg);
}
.clean-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--accent);
}
.clean-option-info {
    flex: 1;
}
.clean-option-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.clean-option-desc {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.clean-option-count {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
}

/* 卡片操作按钮 */
.card-actions {
    display: flex; gap: 6px; margin-top: 8px;
}
.card-actions .btn { flex: 1; text-align: center; }

/* ===== 右栏日志 ===== */
.sidebar-right { overflow: hidden; }
.log-container {
    font-family: var(--mono);
    font-size: 11px;
    line-height: 1.8;
}
.log-line {
    padding: 2px 4px;
    border-radius: 3px;
    display: flex; gap: 6px;
    animation: logFadeIn 0.3s ease;
}
.log-line:hover { background: var(--bg-hover); }
.log-time { color: var(--text-muted); flex-shrink: 0; }
.log-level {
    flex-shrink: 0; width: 40px; text-align: center;
    border-radius: 3px; font-size: 10px; font-weight: 600; padding: 0 4px;
}
.log-level.INFO { color: var(--blue); background: var(--blue-bg); }
.log-level.OK { color: var(--success); background: var(--success-bg); }
.log-level.WARN { color: var(--warn); background: var(--warn-bg); }
.log-level.ERROR { color: var(--error); background: var(--error-bg); }
.log-account { color: var(--accent-dark); flex-shrink: 0; font-weight: 500; }
.log-msg { color: var(--text-primary); flex: 1; word-break: break-word; }

@keyframes logFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 空状态 ===== */
.empty-hint { text-align: center; color: var(--text-muted); font-size: 12px; padding: 20px; }
.empty-hint-big {
    text-align: center; color: var(--text-muted);
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}
.empty-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.4; }
.empty-sub { font-size: 12px; margin-top: 4px; opacity: 0.7; }

/* ===== 弹窗 ===== */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    z-index: 100;
    animation: fadeIn 0.2s;
}
.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    width: 500px;
    max-width: 90vw;
    max-height: 90vh;
    display: flex; flex-direction: column;
}
.modal-sm { width: 400px; }
.modal-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
    font-weight: 600; font-size: 15px;
}
.modal-body { padding: 18px; flex: 1; overflow-y: auto; }
.modal-footer { padding: 12px 18px; border-top: 1px solid var(--border-color); display: flex; justify-content: flex-end; gap: 8px; }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.form-group input, .form-group textarea {
    width: 100%; padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px; font-family: var(--font);
    background: var(--bg-sidebar);
    color: var(--text-primary);
    transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--border-glow-soft);
}
.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

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

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-light); }

/* ===== 复选框样式 ===== */
input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--accent);
    border: 1px solid var(--border-color);
    border-radius: 3px;
}
.acc-checkbox {
    width: 14px;
    height: 14px;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--accent);
    border: 1px solid var(--border-color);
    border-radius: 3px;
}

/* ===== 表格导入样式 ===== */
#import-file {
    width: 100%;
    padding: 8px;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-sidebar);
    cursor: pointer;
    transition: all 0.2s;
}
#import-file:hover {
    border-color: var(--accent);
    background: var(--accent-bg);
}
#import-text {
    font-family: var(--mono);
    font-size: 12px;
}
.import-preview-item {
    display: flex;
    gap: 12px;
    padding: 4px 0;
    border-bottom: 1px dashed var(--border-color);
    font-size: 11px;
}
.import-preview-item:last-child {
    border-bottom: none;
}
.import-preview-label {
    color: var(--text-muted);
    width: 40px;
    flex-shrink: 0;
}
.import-preview-value {
    color: var(--text-primary);
    font-family: var(--mono);
}

.watermark-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 99999;
    overflow: hidden;
}

.watermark-layer {
    position: relative;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    transform: rotate(45deg);
    padding: 0;
    margin: 0;
    pointer-events: none;
    z-index: 99999;
}

.watermark-text {
    position: absolute;
    font-size: 16px;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.03);
    white-space: nowrap;
    margin: 0;
    padding: 0;
    border: 0;
    pointer-events: none;
    z-index: 99999;
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .main-layout { grid-template-columns: 240px 1fr 280px; }
}
@media (max-width: 900px) {
    .main-layout { grid-template-columns: 1fr; grid-template-rows: auto 1fr auto; }
    .sidebar-left, .sidebar-right { max-height: 200px; }
}

/* ===== 普通用户界面 ===== */
.normal-user-body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f5f5f5;
    min-height: 100vh;
    color: #333;
}

#normal-app {
    display: flex;
    min-height: 100vh;
}

.normal-sidebar {
    width: 240px;
    background: #fff;
    border-right: 1px solid #e8e8e8;
    padding: 20px 0;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s;
}

.normal-logo {
    padding: 0 20px 20px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 10px;
}

.normal-logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #333;
    display: block;
}

.normal-logo-sub {
    font-size: 12px;
    color: #999;
}

.normal-menu {
    padding: 10px 0;
}

.normal-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    font-size: 14px;
    color: #666;
    transition: all 0.2s;
}

.normal-menu-item:hover {
    background: #f5f5f5;
}

.normal-menu-item.active {
    background: #fff0f0;
    color: #ff6b6b;
    border-right: 3px solid #ff6b6b;
}

.menu-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.announcement-badge {
    background: #ff4444;
    color: white;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

.normal-main {
    flex: 1;
    margin-left: 240px;
    padding: 20px;
    overflow-y: auto;
    max-height: 100vh;
    display: flex;
    flex-direction: column;
}

.normal-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.normal-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
}

.user-name {
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

.user-status {
    font-size: 12px;
    color: #999;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #52c41a;
    display: inline-block;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

.page-content {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-content: flex-start;
    flex: 1;
    min-height: 0;
}

.normal-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    flex: 1 1 calc(50% - 8px);
    min-width: 200px;
}

.normal-card.full-width {
    flex: 1 1 100%;
}

.card-label {
    font-size: 14px;
    color: #999;
    margin-bottom: 8px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
    color: #333;
    margin-bottom: 4px;
}

.card-value.balance-value {
    color: #ff6b6b;
}

.card-sub {
    font-size: 12px;
    color: #999;
}

.btn-large {
    width: 100%;
    padding: 14px;
    margin-top: 8px;
    font-size: 15px;
}

.btn-outline {
    background: #fff;
    border: 1px solid #e8e8e8;
    color: #666;
}

.btn-outline:hover {
    border-color: #667eea;
    color: #667eea;
}

/* EWT登录标签页 */
.ewt-login-tabs {
    display: flex;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 16px;
}

.ewt-tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    font-size: 14px;
    color: #999;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.ewt-tab:hover {
    color: #667eea;
}

.ewt-tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
    font-weight: 600;
}

.ewt-login-form {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 课程列表 */
.course-item {
    padding: 16px;
    border: 1px solid #f0f0f0;
    border-radius: 8px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.course-item:hover {
    border-color: #667eea;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
}

.course-title {
    font-size: 15px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
}

.course-meta {
    font-size: 12px;
    color: #999;
    margin-bottom: 8px;
}

.course-status {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
}

.course-status.running {
    background: #e6f7ff;
    color: #1890ff;
}

.course-status.done {
    background: #f6ffed;
    color: #52c41a;
}

.course-status.expired {
    background: #fff1f0;
    color: #ff4d4f;
}

/* 响应式 */
@media (max-width: 768px) {
    .normal-sidebar {
        transform: translateX(-100%);
    }
    .normal-sidebar.show {
        transform: translateX(0);
    }
    .normal-main {
        margin-left: 0;
    }
    .menu-toggle {
        display: block;
    }
    .normal-card {
        flex: 1 1 100%;
    }
}