/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary-color: #7C3AED;
    --secondary-light: #8B5CF6;
    --accent-color: #A855F7;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --danger-color: #EF4444;
    --info-color: #3B82F6;

    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;
    --text-light: #9CA3AF;

    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --bg-dark: #1F2937;

    --border-color: #E5E7EB;
    --border-light: #F3F4F6;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 3.75rem; }
h2 { font-size: 3rem; }
h3 { font-size: 2.25rem; }
h4 { font-size: 1.875rem; }
h5 { font-size: 1.5rem; }
h6 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo svg {
    flex-shrink: 0;
}

.logo-text {
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

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

.nav-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white !important;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* Hero Section */
.hero {
    padding: 10rem 0 6rem;
    background: linear-gradient(180deg, #EEF2FF 0%, #E0E7FF 50%, #DBEAFE 100%);
    position: relative;
    overflow: hidden;
    margin-top: 4rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    width: 100%;
}

.hero-visual {
    perspective: 1000px;
}

.visual-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: 2rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    transform: rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-slow);
}

.visual-card:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.visual-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.visual-badge {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.visual-status {
    background: #D1FAE5;
    color: #065F46;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.molecule-display {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.molecule-structure {
    animation: moleculeFloat 6s ease-in-out infinite;
}

@keyframes moleculeFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
}

.molecule-properties {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.property {
    display: grid;
    grid-template-columns: 120px 1fr 60px;
    align-items: center;
    gap: 1rem;
}

.property-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.property-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color) 0%, #34D399 100%);
    border-radius: 999px;
    transition: width 1s ease-out;
}

.property-fill-low {
    background: linear-gradient(90deg, var(--success-color) 0%, #34D399 100%);
}

.property-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
}

.molecule-actions {
    display: flex;
    gap: 0.75rem;
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
}

.action-btn:hover {
    background: white;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Platform Section */
.platform-section {
    padding: 6rem 0;
    background: white;
}

.section-header {
    max-width: 800px;
    margin-bottom: 4rem;
}

.section-header.centered {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.platform-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 2.5rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.platform-card:hover::before {
    opacity: 1;
}

.card-icon {
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.card-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

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

.card-highlight {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-top: 1.5rem;
}

.highlight-badge {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 600;
}

.highlight-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-metrics {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.metric {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.metric-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* Capabilities Section */
.capabilities-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.capabilities-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.capability-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    transition: all var(--transition-base);
}

.capability-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.capability-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.capability-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.capability-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.capability-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.feature-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.capability-metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.mini-metric {
    background: var(--bg-secondary);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    text-align: center;
}

.mini-metric-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

.mini-metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.capability-highlight-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    padding: 2rem;
    border-radius: var(--radius-xl);
    margin-top: 1.5rem;
}

.highlight-stat {
    text-align: center;
}

.highlight-stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.highlight-stat-label {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.admet-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.admet-category {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
}

.admet-cat-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.admet-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.admet-list li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
}

.admet-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* How It Works Section */
.how-it-works-section {
    padding: 6rem 0;
    background: white;
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.step-card {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 3rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    transition: all var(--transition-base);
}

.step-card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.step-visual {
    position: relative;
}

.step-number {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.step-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.step-details {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.detail-item svg {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.step-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.step-stat {
    text-align: center;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.step-stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.step-stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.step-deliverables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.deliverable-section {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
}

.deliverable-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.deliverable-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.deliverable-list li {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.deliverable-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

/* Technology Section */
.technology-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.technology-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.tech-main-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 3rem;
}

.tech-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.tech-main-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.tech-main-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.tech-architecture-diagram {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 2rem;
    background: linear-gradient(180deg, #F9FAFB 0%, #F3F4F6 100%);
    border-radius: var(--radius-xl);
    margin: 2rem 0;
}

.arch-layer {
    display: flex;
    justify-content: center;
}

.arch-box {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    text-align: center;
    min-width: 300px;
    box-shadow: var(--shadow-sm);
}

.arch-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.arch-details {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

.arch-arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
}

.tech-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tech-feature-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all var(--transition-base);
}

.tech-feature-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.tech-feature-icon {
    margin-bottom: 1.25rem;
}

.tech-feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
}

.tech-feature-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.tech-stats-section {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 3rem;
}

.tech-stats-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
}

.tech-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tech-stat-card {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    border-radius: var(--radius-xl);
}

.tech-stat-value {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
}

.tech-stat-label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tech-stat-description {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Use Cases Section */
.use-cases-section {
    padding: 6rem 0;
    background: white;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.use-case-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 2.5rem;
    transition: all var(--transition-base);
}

.use-case-card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
    transform: translateY(-4px);
}

.use-case-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.use-case-icon {
    flex-shrink: 0;
}

.use-case-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.use-case-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.use-case-details {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.detail-row {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.detail-row:last-child {
    margin-bottom: 0;
}

.detail-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 100px;
}

.detail-value {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.use-case-impact {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.impact-stat {
    text-align: center;
    padding: 1.25rem;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    border-radius: var(--radius-lg);
}

.impact-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.impact-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.use-cases-cta {
    margin-top: 4rem;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-2xl);
    padding: 4rem;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-box .btn-primary {
    background: white;
    color: var(--primary-color);
}

.cta-box .btn-primary:hover {
    transform: translateY(-2px) scale(1.05);
}

/* Scientific Section */
.scientific-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.scientific-grid {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.scientific-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 3rem;
}

.scientific-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
}

.scientific-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.data-sources {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.data-source {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.source-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.source-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.source-details {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.validation-metrics {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.validation-category {
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

.validation-category-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.validation-stats-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.validation-stats-row:last-child {
    margin-bottom: 0;
}

.validation-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
}

.validation-metric {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.validation-value {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mechanism-insights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.insight-box {
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

.insight-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.insight-text {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.insight-range {
    margin-top: 1.5rem;
}

.range-bar {
    position: relative;
    height: 40px;
    background: linear-gradient(90deg, #FEE2E2 0%, #FEF3C7 25%, #D1FAE5 50%, #FEF3C7 75%, #FEE2E2 100%);
    border-radius: var(--radius-md);
}

.range-optimal {
    position: absolute;
    top: 0;
    bottom: 0;
    background: linear-gradient(90deg, var(--success-color) 0%, #34D399 100%);
    border-radius: var(--radius-md);
}

.range-label {
    position: absolute;
    top: 45px;
    transform: translateX(-50%);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-tertiary);
}

.insight-threshold {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.threshold-indicator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 1.25rem;
    background: white;
    border-radius: var(--radius-md);
}

.threshold-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.threshold-status {
    font-size: 1rem;
    font-weight: 700;
}

.status-good { color: var(--success-color); }
.status-warning { color: var(--warning-color); }
.status-bad { color: var(--danger-color); }

.insight-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.insight-list li {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.insight-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.improvement-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.timeline-item {
    position: relative;
    padding: 2rem 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    text-align: center;
}

.timeline-marker {
    display: inline-block;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 3rem;
    margin-bottom: 1rem;
}

.timeline-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* FAQ Section */
.faq-section {
    padding: 6rem 0;
    background: white;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    cursor: pointer;
    user-select: none;
}

.faq-question-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 300;
    transition: transform var(--transition-base);
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
}

.contact-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-detail-item {
    display: flex;
    gap: 1.25rem;
}

.detail-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

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

.detail-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
}

.response-time {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: #D1FAE5;
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    color: #065F46;
}

.contact-form-container {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 3rem;
}

.contact-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    padding: 0.875rem 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
}

.form-checkbox {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.checkbox-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.btn-icon {
    transition: transform var(--transition-base);
}

.btn-primary:hover .btn-icon {
    transform: translateX(3px);
}

.form-success {
    text-align: center;
    padding: 3rem;
}

.form-success svg {
    margin: 0 auto 1.5rem;
}

.form-success h3 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.form-success p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

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

.footer-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.025em;
}

.footer-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
}

.footer-legal-name {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: auto;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.footer-column-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.25rem;
}

.footer-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-menu a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-base);
}

.footer-menu a:hover {
    color: white;
    padding-left: 0.5rem;
}

.footer-bottom {
    padding-top: 2rem;
}

.footer-bottom-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
}

.footer-address,
.footer-contact {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact a:hover {
    color: white;
}

.footer-separator {
    margin: 0 0.5rem;
    color: rgba(255, 255, 255, 0.3);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hero .container {
        gap: 3rem;
    }

    .platform-grid {
        grid-template-columns: 1fr;
    }

    .tech-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .step-card {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .admet-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .tech-features-grid {
        grid-template-columns: 1fr;
    }

    .tech-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .card-stats {
        grid-template-columns: 1fr;
    }

    .capability-metrics-grid {
        grid-template-columns: 1fr;
    }

    .capability-highlight-box {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .admet-grid {
        grid-template-columns: 1fr;
    }

    .step-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .step-deliverables {
        grid-template-columns: 1fr;
    }

    .mechanism-insights {
        grid-template-columns: 1fr;
    }

    .improvement-timeline {
        grid-template-columns: 1fr;
    }

    .data-sources {
        grid-template-columns: 1fr;
    }

    .validation-stats-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .tech-stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 6rem 0 3rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .platform-card,
    .capability-card,
    .step-card,
    .tech-main-card,
    .scientific-card {
        padding: 1.5rem;
    }

    .contact-form-container {
        padding: 2rem;
    }

    .use-case-impact {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* Print Styles */
@media print {
    .navbar,
    .hero-cta,
    .contact-section,
    .footer {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    .container {
        max-width: 100%;
    }
}