:root {
    /* Claude-like Warm Organic Color Palette */
    --bg-primary: #fbfaf7;      /* 温润奶油白背景 */
    --bg-secondary: #ffffff;    /* 卡片白色 */
    --bg-tertiary: #f5f2eb;     /* 侧边栏与表头暖灰 */
    --border-color: #e6e0d5;    /* 黏土色边框 */
    --border-focus: #cc5a37;    /* 珊瑚色焦点框 */
    
    --text-primary: #191919;    /* 深炭黑文字 */
    --text-secondary: #4a453f;  /* 暖炭灰文字 */
    --text-muted: #9c958a;      /* 黏土灰文字 */
    
    --color-primary: #d97753;   /* Claude 经典珊瑚/陶土红 */
    --color-primary-hover: #c25e3b;
    --color-accent: #385a4f;    /* Claude 经典橄榄绿/森林绿 */
    --color-accent-hover: #2b453d;
    
    --color-success: #385a4f;   
    --color-warning: #b45309;   
    --color-error: #b91c1c;     
    
    /* Layout */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 2px 0 rgba(25, 25, 25, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(25, 25, 25, 0.03), 0 2px 4px -2px rgba(25, 25, 25, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(25, 25, 25, 0.03), 0 4px 6px -4px rgba(25, 25, 25, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(25, 25, 25, 0.05), 0 8px 10px -6px rgba(25, 25, 25, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.65;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.hidden {
    display: none !important;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 0.925rem;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-muted);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-muted);
}

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

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

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.825rem;
    border-radius: 4px;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ==================== TYPOGRAPHY & GRADIENTS ==================== */
h1, h2, h3, h4 {
    font-family: 'Lora', 'Georgia', serif;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ==================== PART 1: LANDING VIEW (官网) ==================== */

/* Header & Navbar */
.navbar {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-container {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-family: 'Lora', 'Georgia', serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-text span {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

#logged-in-nav {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-status-tag {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
    background-color: rgba(13, 148, 136, 0.1);
    padding: 6px 12px;
    border-radius: 20px;
}

/* Hero Section */
.hero-section {
    padding: 80px 0;
    background: radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 64px;
}

.badge-container {
    margin-bottom: 20px;
}

.badge {
    background-color: rgba(30, 58, 138, 0.08);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 30px;
    border: 1px solid rgba(30, 58, 138, 0.15);
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    align-items: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: var(--border-color);
}

/* Browser Simulator Frame */
.mock-browser-frame {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.browser-header {
    height: 40px;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 6px;
}

.browser-header .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.browser-header .dot.red { background-color: #ff5f56; }
.browser-header .dot.yellow { background-color: #ffbd2e; }
.browser-header .dot.green { background-color: #27c93f; }

.browser-address {
    margin-left: 20px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 24px;
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-grow: 1;
    max-width: 320px;
    text-align: center;
}

.browser-body {
    padding: 24px;
}

.search-input-simulate {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--bg-tertiary);
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.search-answer-simulate {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.card-recommend {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius-sm);
    padding: 16px;
    margin: 16px 0;
}

.card-rec-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.card-rec-title {
    font-weight: 600;
    color: #14532d;
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.tag-success {
    background-color: #dcfce7;
    color: #15803d;
}

.sources-simulate {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
}

.source-label {
    font-weight: 600;
}

.source-tag {
    background-color: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Features Section */
.features-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 2.25rem;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.feature-icon.bg-blue { background-color: rgba(30, 58, 138, 0.08); }
.feature-icon.bg-green { background-color: rgba(16, 185, 129, 0.08); }
.feature-icon.bg-purple { background-color: rgba(139, 92, 246, 0.08); }
.feature-icon.bg-amber { background-color: rgba(245, 158, 11, 0.08); }
.feature-icon.bg-red { background-color: rgba(239, 68, 68, 0.08); }
.feature-icon.bg-teal { background-color: rgba(13, 148, 136, 0.08); }

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.925rem;
    color: var(--text-secondary);
}

/* Sample Reports Section */
.samples-section {
    padding: 100px 0;
}

.sample-report-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    height: 720px;
}

.sample-report-sidebar {
    background-color: var(--bg-tertiary);
    border-right: 1px solid var(--border-color);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sample-tab-btn {
    text-align: left;
    background-color: transparent;
    border: none;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.925rem;
    transition: all 0.2s;
}

.sample-tab-btn:hover {
    color: var(--text-primary);
    background-color: rgba(0, 0, 0, 0.03);
}

.sample-tab-btn.active {
    color: var(--color-primary);
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.sample-report-content {
    padding: 40px;
    overflow-y: auto;
}

/* Pricing Section */
.pricing-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    align-items: center;
}

.pricing-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}

.pricing-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    background-color: var(--bg-secondary);
    border-color: var(--color-primary);
    border-width: 2px;
    padding: 50px 32px;
}

.featured-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 20px;
}

.card-tier {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.card-price {
    font-family: 'Outfit', sans-serif;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.card-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card-features li {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer h1, .footer h2, .footer h3, .footer h4 {
    color: #ffffff;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 10px;
    max-width: 320px;
}

.footer-right {
    display: flex;
    gap: 64px;
}

.footer-links-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links-group h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-links-group a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-links-group a:hover {
    color: #ffffff;
}

.footer-links-group p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================== PART 2: APP VIEW (控制台) ==================== */

.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-tertiary); /* 暖灰底色 */
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-shrink: 0;
}

.sidebar-header {
    height: 72px;
    display: flex;
    align-items: center;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.sidebar-menu {
    padding: 32px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-grow: 1;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: transparent;
    border: none;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    font-size: 0.925rem;
    transition: all 0.2s;
    position: relative;
}

.menu-item i {
    width: 18px;
    height: 18px;
    stroke-width: 2px;
}

.menu-item:hover {
    color: var(--text-primary);
    background-color: rgba(25, 25, 25, 0.02);
}

.menu-item.active {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 3px;
    background-color: var(--color-primary);
    border-radius: 0 4px 4px 0;
}

.sidebar-footer {
    padding: 20px 16px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.user-profile-summary {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.user-profile-summary .avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-profile-summary .info {
    display: flex;
    flex-direction: column;
}

.user-profile-summary .username {
    font-weight: 600;
    font-size: 0.875rem;
}

.points-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
}

/* App Main Panel */
.app-main {
    flex-grow: 1;
    overflow-y: auto;
    padding: 40px;
    background-color: var(--bg-primary);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.app-page-header {
    margin-bottom: 32px;
}

.app-page-header h2 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.app-page-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Card UI */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-bottom: 24px;
}

.card-header {
    padding: 24px 24px 8px 24px; /* 去除中间实线，增加上下间距 */
    border-bottom: 1px solid transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-family: 'Lora', 'Georgia', serif;
    font-size: 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 16px 24px 24px 24px;
}

/* Form Styling */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

input[type="text"], input[type="password"], textarea {
    width: 100%;
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: #faf9f6; /* 柔软纸感底色 */
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

input[type="text"]:focus, input[type="password"]:focus, textarea:focus {
    background-color: var(--bg-secondary);
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(204, 90, 55, 0.1); /* 珊瑚红焦点框 */
}

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

/* Workbench Grid Layout */
.workbench-grid {
    display: grid;
    grid-template-columns: 480px 1fr;
    gap: 32px;
    align-items: flex-start;
}

.module-selector-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.module-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

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

.module-btn.active {
    border-color: var(--color-primary);
    background-color: rgba(30, 58, 138, 0.05);
    color: var(--color-primary);
}

.points-cost-tip {
    font-size: 0.825rem;
    font-weight: 700;
    color: var(--color-accent);
    background-color: rgba(13, 148, 136, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

/* File Upload drag area */
.knowledge-upload-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.file-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px;
    background-color: var(--bg-primary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.file-upload-label:hover {
    border-color: var(--color-primary);
    background-color: var(--bg-tertiary);
    color: var(--color-primary);
}

.file-list {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.file-item {
    font-size: 0.825rem;
    background-color: var(--bg-tertiary);
    padding: 6px 12px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
}

.btn-remove-file {
    color: var(--color-error);
    cursor: pointer;
    background: none;
    border: none;
    font-weight: bold;
}

/* Result Card empty / loaded styles */
.result-card {
    height: 780px;
    display: flex;
    flex-direction: column;
}

.result-body {
    flex-grow: 1;
    overflow-y: auto;
    background-color: #fafbfc;
}

.result-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
    padding: 40px;
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.empty-state h4 {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* Markdown renderer styling */
.markdown-article {
    padding: 24px;
    color: var(--text-primary);
}

.markdown-article h1, .markdown-article h2, .markdown-article h3 {
    margin-top: 24px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.markdown-article p {
    margin-bottom: 16px;
}

.markdown-article table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
    font-size: 0.875rem;
}

.markdown-article th, .markdown-article td {
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    text-align: left;
}

.markdown-article th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
}

.markdown-article blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-style: italic;
}

.result-charts-layout {
    padding: 24px 24px 0 24px;
}

/* Billing Grid */
.billing-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
    align-items: flex-start;
}

/* Standard table styling */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

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

.table th, .table td {
    padding: 14px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.table th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
}

.table tbody tr:hover {
    background-color: #fafbfc;
}

/* ==================== PART 3: DIALOG OVERLAYS ==================== */

.modal-dialog {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    margin: auto;
    max-width: 500px;
    width: calc(100% - 32px);
    outline: none;
    overflow: hidden;
}

.modal-dialog::backdrop {
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.dialog-content {
    background-color: var(--bg-secondary);
}

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

.dialog-header h3 {
    font-size: 1.15rem;
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: var(--text-muted);
}

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

.dialog-body {
    padding: 24px;
}

.auth-toggle {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.auth-toggle button {
    flex-grow: 1;
    background: none;
    border: none;
    padding: 12px;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.auth-toggle button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
}

/* Spinner and Progress Bar */
.spinner-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    transition: width 0.3s ease;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

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

/* ==================== RESPONSIVE MEDIA QUERIES ==================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .workbench-grid {
        grid-template-columns: 1fr;
    }
    
    .sample-report-container {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .sample-report-sidebar {
        flex-direction: row;
        overflow-x: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .billing-grid {
        grid-template-columns: 1fr;
    }
}