:root {
    --primary: #e94560;
    --primary-dark: #d13550;
    --secondary: #6c757d;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --light: #f8f9fa;
    --dark: #343a40;
    --border-radius: 12px;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(233, 69, 96, 0.15);

    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #242b3d;
    --border-color: #2d3548;
    --text-primary: #f0f4f8;
    --text-secondary: #8b95a8;
    --accent: #e94560;
    --accent-light: #ff6b6b;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #f56565;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ===== 登录页面 ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    overflow: hidden;
}

.bg-decoration {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.bg-circle-1 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(233, 69, 96, 0.4) 0%, transparent 70%);
    top: -200px; right: -200px;
}

.bg-circle-2 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(66, 153, 225, 0.3) 0%, transparent 70%);
    bottom: -150px; left: -150px;
}

.bg-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-card {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(233, 69, 96, 0.3);
    border-radius: 20px;
    padding: 40px 32px;
}

.card-top-line {
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 60px; height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    border-radius: 0 0 3px 3px;
}

.login-brand {
    text-align: center;
    margin-bottom: 28px;
}

.brand-icon-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 16px;
}

.brand-icon {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 800;
    color: #1a1206;
    position: relative;
    z-index: 2;
}

.brand-icon-glow {
    position: absolute;
    inset: -8px;
    background: radial-gradient(circle, rgba(233, 69, 96, 0.4) 0%, transparent 70%);
    z-index: 1;
}

.brand-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 4px;
}

.brand-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

.divider {
    display: flex;
    align-items: center;
    margin: 20px 0 28px;
    color: var(--text-secondary);
    font-size: 12px;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.divider-text { padding: 0 12px; }

.form-group { margin-bottom: 20px; }

.form-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-label .icon {
    width: 16px; height: 16px;
    color: var(--accent);
}

.input-wrapper { position: relative; }

.form-input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
}

.toggle-password svg { width: 18px; height: 18px; }

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border: none;
    border-radius: 10px;
    color: #1a1206;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.form-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

.switch-link {
    color: var(--accent);
    text-decoration: none;
    margin-left: 4px;
}

.login-footer {
    text-align: center;
    margin-top: 32px;
    color: var(--text-secondary);
    font-size: 12px;
}

.footer-sub { opacity: 0.7; margin-top: 4px; }

/* ===== 主应用布局 ===== */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* 左侧导航 */
.side-nav {
    width: 200px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 16px 12px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.nav-logo {
    width: 32px; height: 32px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: #1a1206;
}

.nav-title {
    font-size: 16px;
    font-weight: 600;
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}

.nav-item:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent);
}

.nav-item svg {
    width: 20px; height: 20px;
}

.nav-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

/* 主内容区 */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px 40px;
}

.page-header {
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 6px;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 15px;
}

/* 页面切换 */
.page { display: none; }
.page.active { display: block; }

/* ===== 概览页 ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
    text-align: center;
}

.stat-card.success { border-color: var(--success); }
.stat-card.danger { border-color: var(--danger); }
.stat-card.warning { border-color: var(--warning); }

.stat-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.dashboard-sections {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.dash-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
}

.dash-section h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.empty-tip {
    color: var(--text-secondary);
    text-align: center;
    padding: 40px;
}

.quick-actions {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
}

.quick-actions h3 {
    font-size: 16px;
    margin-bottom: 16px;
}

.action-btns {
    display: flex;
    gap: 12px;
}

.action-btn {
    flex: 1;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.action-btn:hover {
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
}

.action-btn span:first-child {
    font-size: 24px;
}

/* ===== 归档页 ===== */
.archive-container {
    max-width: 800px;
}

.archive-step {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
}

.step-badge {
    width: 32px; height: 32px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.archive-step h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.step-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.archive-step textarea {
    width: 100%;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    resize: vertical;
    min-height: 160px;
    margin-bottom: 20px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group select,
.form-group input {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
}

.three-sentences {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.sentence-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.sentence-box label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.sentence-box input {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 15px;
}

.form-row {
    margin-bottom: 20px;
}

.role-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.role-tag {
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
}

.role-tag input { margin-right: 6px; }

.verification-notice {
    background: rgba(237, 137, 54, 0.1);
    border: 1px solid var(--warning);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--warning);
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* ===== 知识条目页 ===== */
.entries-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
}

.entries-sidebar {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 20px;
    height: fit-content;
}

.filter-group {
    margin-bottom: 24px;
}

.filter-group h4 {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-option:hover {
    background: rgba(255,255,255,0.05);
}

.filter-option.active {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent);
}

.filter-option input { display: none; }

.filter-option.highlight {
    border: 1px solid var(--warning);
}

.filter-group select {
    width: 100%;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 13px;
}

.entries-main {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 20px;
}

.entries-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.search-box {
    display: flex;
    gap: 8px;
    flex: 1;
    max-width: 400px;
}

.search-box input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
}

.search-box button {
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
    border: none;

    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.entries-count {
    color: var(--text-secondary);
    font-size: 14px;
}

.entries-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.entry-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.entry-card:hover {
    border-color: var(--accent);
}

.entry-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.entry-code {
    font-size: 12px;
    color: var(--text-secondary);
}

.entry-badges {
    display: flex;
    gap: 6px;
}

.badge {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 12px;
}

.entry-did {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
}

.entry-meta {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== 复盘页 ===== */
.review-container {
    max-width: 800px;
}

.review-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 24px;
}

.review-form .form-group {
    margin-bottom: 24px;
}

.review-form label {
    display: block;
    font-size: 14px;
    margin-bottom: 10px;
}

.review-form input {
    width: 100%;
    padding: 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
}

.form-hint {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 6px;
}

.range-options {
    display: flex;
    gap: 12px;
}

.range-option {
    padding: 12px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.range-option.active {
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
}

.range-option input { display: none; }

.review-result {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.result-actions {
    display: flex;
    gap: 10px;
}

.result-content {
    line-height: 1.8;
}

/* ===== 问答页 ===== */
.chat-container {
    max-width: 800px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 200px);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.chat-welcome {
    text-align: center;
    padding: 40px;
}

.welcome-avatar {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: #1a1206;
    margin: 0 auto 20px;
}

.welcome-text h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.welcome-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.example-questions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.example-tag {
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.example-tag:hover {
    border-color: var(--accent);
}

.chat-message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.chat-message.user {
    justify-content: flex-end;
}

.chat-message.user .message-content {
    background: var(--accent);
    color: #1a1206;
}

.message-avatar {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #1a1206;
    flex-shrink: 0;
}

.message-content {
    background: var(--bg-tertiary);
    padding: 14px 18px;
    border-radius: 14px;
    max-width: 70%;
    line-height: 1.6;
}

.chat-input-box {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.chat-input-box textarea {
    flex: 1;
    padding: 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    resize: none;
    height: 52px;
}

/* ===== 通用按钮 ===== */
.btn {
    padding: 10px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-color: var(--accent);
    color: #1a1206;
    font-weight: 600;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
    margin-left: 8px;
}

/* ===== 弹窗 ===== */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow: hidden;
}

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

.modal-header h2 {
    font-size: 18px;
}

.btn-close {
    width: 32px; height: 32px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

.modal-body {
    padding: 24px;
    max-height: 70vh;
    overflow-y: auto;
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-secondary);
    border: 1px solid var(--accent);
    color: var(--text-primary);
    padding: 14px 28px;
    border-radius: 10px;
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
    .entries-layout {
        grid-template-columns: 1fr;
    }
    .entries-sidebar {
        order: 2;
    }
}

@media (max-width: 768px) {
    .side-nav {
        width: 64px;
    }
    .nav-item span,
    .nav-title {
        display: none;
    }
    .main-content {
        padding: 20px;
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .action-btns {
        flex-direction: column;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.required {
    color: var(--danger);
}

.entry-empty {
    text-align: center;
    padding: 60px;
    color: var(--text-secondary);
}