/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-card: #1a1a1d;
    --bg-hover: #222225;
    
    --red-primary: #dc2626;
    --red-light: #ef4444;
    --red-dark: #b91c1c;
    --red-glow: rgba(220, 38, 38, 0.3);
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --border-color: #27272a;
    --border-light: #3f3f46;
    
    --gradient-red: linear-gradient(135deg, #dc2626 0%, #ef4444 50%, #f87171 100%);
    --gradient-dark: linear-gradient(180deg, rgba(220, 38, 38, 0.1) 0%, transparent 100%);
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5);
    --shadow-red: 0 0 30px rgba(220, 38, 38, 0.3);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.accent {
    color: var(--red-primary);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-red);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--red-primary);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-red);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px rgba(220, 38, 38, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(220, 38, 38, 0.3);
}

.btn-outline {
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--bg-hover);
    border-color: var(--red-primary);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 50% 0%, rgba(220, 38, 38, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(220, 38, 38, 0.08) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 80%, rgba(220, 38, 38, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23dc2626' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: 50px;
    color: var(--red-light);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-red);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: 50px;
    color: var(--red-light);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Features Section ===== */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(220, 38, 38, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--red-primary);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Marketplace Section ===== */
.marketplace {
    padding: 100px 0;
}

.marketplace-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

.filter-btn.active {
    background: var(--red-primary);
    color: white;
    border-color: var(--red-primary);
}

.search-box {
    position: relative;
    width: 300px;
}

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 42px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--red-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.agents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.agent-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

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

.agent-header {
    padding: 24px 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.agent-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-red);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.agent-badge {
    padding: 4px 10px;
    background: rgba(220, 38, 38, 0.1);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--red-light);
    font-weight: 500;
}

.agent-body {
    padding: 20px 24px;
}

.agent-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.agent-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.agent-meta {
    display: flex;
    gap: 16px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.agent-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.agent-footer {
    padding: 16px 24px;
    background: var(--bg-tertiary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
}

.agent-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--red-light);
}

.agent-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #fbbf24;
    font-size: 0.875rem;
}

.marketplace-cta {
    text-align: center;
}

/* ===== Upload Section ===== */
.upload-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.upload-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.upload-info .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.upload-info .section-subtitle {
    text-align: left;
    margin: 0 0 32px;
}

.upload-benefits {
    list-style: none;
}

.upload-benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 1rem;
    color: var(--text-secondary);
}

.upload-benefits i {
    color: var(--red-primary);
    font-size: 1.25rem;
}

.upload-form-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
}

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

.upload-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.upload-form input,
.upload-form textarea,
.upload-form select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.upload-form input:focus,
.upload-form textarea:focus,
.upload-form select:focus {
    outline: none;
    border-color: var(--red-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.upload-form input::placeholder,
.upload-form textarea::placeholder {
    color: var(--text-muted);
}

.upload-form select option {
    background: var(--bg-tertiary);
}

.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.file-upload:hover,
.file-upload.dragover {
    border-color: var(--red-primary);
    background: rgba(220, 38, 38, 0.05);
}

.file-upload i {
    font-size: 2.5rem;
    color: var(--red-primary);
    margin-bottom: 16px;
}

.file-upload p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

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

.file-preview {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: none;
    align-items: center;
    gap: 12px;
}

.file-preview.show {
    display: flex;
}

.file-preview i {
    color: var(--red-primary);
}

.file-preview .file-name {
    flex: 1;
    font-size: 0.875rem;
}

.file-preview .remove-file {
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.file-preview .remove-file:hover {
    color: var(--red-primary);
}

/* ===== Evaluate Section ===== */
.evaluate-section {
    padding: 100px 0;
}

.evaluate-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.evaluate-sidebar {
    background: var(--bg-tertiary);
    padding: 24px;
    border-right: 1px solid var(--border-color);
}

.evaluate-sidebar h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.agent-select-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.agent-select-item {
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.agent-select-item:hover {
    border-color: var(--border-light);
}

.agent-select-item.selected {
    border-color: var(--red-primary);
    background: rgba(220, 38, 38, 0.1);
}

.agent-select-item .name {
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 4px;
}

.agent-select-item .category {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.evaluate-main {
    padding: 32px;
}

.evaluate-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.selected-agent {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.125rem;
    font-weight: 500;
}

.selected-agent i {
    color: var(--red-primary);
    font-size: 1.5rem;
}

.evaluate-input,
.evaluate-output {
    margin-bottom: 24px;
}

.evaluate-input label,
.evaluate-output label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.evaluate-input textarea {
    width: 100%;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    resize: vertical;
    transition: var(--transition);
}

.evaluate-input textarea:focus {
    outline: none;
    border-color: var(--red-primary);
}

.output-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    min-height: 150px;
}

.output-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 100px;
    color: var(--text-muted);
    text-align: center;
}

.output-placeholder i {
    font-size: 2rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.output-content {
    font-family: 'Fira Code', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    white-space: pre-wrap;
}

.evaluate-metrics {
    display: flex;
    gap: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.metric {
    flex: 1;
    text-align: center;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.metric-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--red-light);
}

/* ===== Pricing Section ===== */
.pricing-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: var(--red-primary);
    box-shadow: var(--shadow-red);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--gradient-red);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.pricing-header {
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price .amount {
    font-size: 3rem;
    font-weight: 800;
}

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

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features i.fa-check {
    color: var(--red-primary);
}

.pricing-features i.fa-times {
    color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin: 20px 0;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--red-primary);
    border-color: var(--red-primary);
    color: white;
}

.footer-links h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== Modal ===== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 24px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--red-primary);
    border-color: var(--red-primary);
    color: white;
}

.modal-body {
    padding: 40px;
}

.modal-agent-header {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
}

.modal-agent-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-red);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    flex-shrink: 0;
}

.modal-agent-info h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.modal-agent-info .category {
    color: var(--red-light);
    font-size: 0.875rem;
    font-weight: 500;
}

.modal-section {
    margin-bottom: 24px;
}

.modal-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.modal-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.modal-stat {
    text-align: center;
    flex: 1;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.modal-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

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

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

.modal-price-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--red-light);
}

/* ===== Toast Notifications ===== */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-color: #22c55e;
}

.toast.success i {
    color: #22c55e;
}

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

.toast.error i {
    color: var(--red-primary);
}

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

/* ===== Loading Spinner ===== */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--red-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .upload-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .evaluate-container {
        grid-template-columns: 1fr;
    }
    
    .evaluate-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .agent-select-list {
        flex-direction: row;
        overflow-x: auto;
        max-height: none;
    }
    
    .agent-select-item {
        min-width: 200px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .marketplace-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        overflow-x: auto;
        padding-bottom: 8px;
    }
    
    .search-box {
        width: 100%;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-brand p {
        max-width: none;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .agents-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .evaluate-metrics {
        flex-direction: column;
        gap: 12px;
    }
    
    .modal-stats {
        flex-direction: column;
        gap: 12px;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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