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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--dark-text);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
video {
    max-width: 100%;
    height: auto;
}

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

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

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

/* Accessibility */
:focus {
    outline: 2px solid var(--primary-indigo);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:root {
    /* Primary Colors */
    --primary-indigo: #6366F1;
    --secondary-purple: #A855F7;
    --accent-pink: #EC4899;
    
    /* Semantic Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* Neutrals */
    --dark-text: #1E293B;
    --medium-gray: #64748B;
    --light-gray: #E2E8F0;
    --light-bg: #F8FAFC;
    --white: #FFFFFF;
    
    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --glass-shadow-heavy: rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 200ms cubic-bezier(0, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0, 0, 0.2, 1);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Lexend', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: 0.5em;
}

/* Typography Scale */
.hero-content h1 {
    font-size: 5rem; /* 80px */
    letter-spacing: -0.02em;
}

.section-title {
    font-size: 3rem; /* 48px */
}

.card-title {
    font-size: 1.5rem; /* 24px */
}

.step-title {
    font-size: 1.5rem; /* 24px */
}

.pricing-price {
    font-size: 3rem; /* 48px */
}

.stat-number {
    font-size: 3rem; /* 48px */
}

.final-cta h2 {
    font-size: 3.5rem; /* 56px */
}

/* Responsive Typography */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 3.5rem; /* 56px */
    }
    
    .section-title {
        font-size: 2.25rem; /* 36px */
    }
    
    .final-cta h2 {
        font-size: 2.5rem; /* 40px */
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem; /* 40px */
    }
    
    .section-title {
        font-size: 2rem; /* 32px */
    }
    
    .final-cta h2 {
        font-size: 2rem; /* 32px */
    }
}

.gradient-text {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-bg {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
}

.subtle-gradient-bg {
    background: linear-gradient(135deg, #EEF2FF 0%, #FAF5FF 50%, #FDF2F8 100%);
}

.mesh-gradient {
    background: 
        radial-gradient(at 40% 20%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(168, 85, 247, 0.15) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(236, 72, 153, 0.15) 0px, transparent 50%);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 25px -5px var(--glass-shadow);
    border-radius: 1.5rem;
    transition: all var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px var(--glass-shadow-heavy);
}

/* Enhanced Glass Effects */
.hero-mockup {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.trust-badge {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    padding: 8px 16px;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    color: var(--primary-indigo);
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.example-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px) saturate(180%);
    -webkit-backdrop-filter: blur(8px) saturate(180%);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin: 1rem 0;
    border: 1px solid var(--light-gray);
}

.btn-primary {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    color: white;
    padding: 16px 32px;
    border-radius: 1rem;
    font-weight: 700;
    font-size: 1.125rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(99, 102, 241, 0.1);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.3);
}

.btn-primary:focus {
    outline: 2px solid var(--white);
    outline-offset: 2px;
}

.btn-primary i {
    font-size: 1rem;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-indigo);
    padding: 16px 32px;
    border-radius: 1rem;
    font-weight: 600;
    font-size: 1.125rem;
    border: 2px solid var(--primary-indigo);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-secondary:hover {
    background: rgba(99, 102, 241, 0.1);
}

.btn-secondary:focus {
    outline: 2px solid var(--primary-indigo);
    outline-offset: 2px;
}

.btn-secondary i {
    font-size: 1rem;
}

/* Button Sizes */
.btn-large {
    padding: 18px 40px;
    font-size: 1.25rem;
}

.btn-medium {
    padding: 12px 24px;
    font-size: 1rem;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.875rem;
}

/* Button States */
.btn-primary:active,
.btn-secondary:active {
    transform: scale(0.98);
}

.btn-primary:disabled,
.btn-secondary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Enhanced Animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
    0%, 100% { 
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.3); 
    }
    50% { 
        box-shadow: 0 0 40px rgba(99, 102, 241, 0.6); 
    }
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes sparkle {
    0%, 100% { 
        opacity: 0.8; 
        transform: scale(1);
    }
    50% { 
        opacity: 1; 
        transform: scale(1.1);
    }
}

/* Staggered Animations */
.stagger-1 { animation-delay: 100ms; }
.stagger-2 { animation-delay: 200ms; }
.stagger-3 { animation-delay: 300ms; }
.stagger-4 { animation-delay: 400ms; }
.stagger-5 { animation-delay: 500ms; }

/* Animation Utilities */
.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse-glow 2s ease-in-out infinite;
}

.animate-sparkle {
    animation: sparkle 2s ease-in-out infinite;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 500ms cubic-bezier(0, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

nav {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--dark-text);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    animation: float 6s ease-in-out infinite;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--medium-gray);
    font-weight: 500;
    transition: color 200ms;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links a:not(.btn-primary) {
    color: var(--dark-text);
    font-weight: 600;
}

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

.nav-links a i {
    font-size: 1rem;
}

/* Enhanced Header Buttons */
.nav-links .btn-primary {
    padding: 14px 28px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 1.25rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    animation: pulse-glow 2s ease-in-out infinite;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    color: white;
}

/* Ensure header nav buttons maintain white text */
.nav-links .btn-primary,
.nav-links .btn-primary:visited,
.nav-links .btn-primary:link {
    color: white !important;
}

.nav-links .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.nav-links .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
    animation: none;
}

.nav-links .btn-primary:hover::before {
    opacity: 1;
}

.nav-links .btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.nav-links .btn-primary.btn-medium {
    padding: 14px 28px;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 2rem 80px;
    background: 
        radial-gradient(at 40% 20%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(168, 85, 247, 0.15) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(236, 72, 153, 0.15) 0px, transparent 50%),
        linear-gradient(135deg, #EEF2FF 0%, #FAF5FF 50%, #FDF2F8 100%);
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 5rem;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    animation: fade-in-up 800ms ease-out;
}

.hero-content .subtitle {
    font-size: 1.25rem;
    color: var(--medium-gray);
    font-weight: 500;
    max-width: 600px;
    margin-bottom: 2rem;
    animation: fade-in-up 800ms ease-out 200ms both;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    animation: fade-in-up 800ms ease-out 400ms both;
}

.trust-badges {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fade-in-up 800ms ease-out 600ms both;
}

/* Enhanced Logo Icon */
.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    animation: float 6s ease-in-out infinite;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

/* Gradient Background for Logo */
.logo-gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 1rem;
    background: linear-gradient(135deg, #4F46E5 0%, #9333EA 50%, #EC4899 100%);
    opacity: 0.5;
    filter: blur(1.5rem);
    z-index: -1;
}

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

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.4) 0%, transparent 70%);
    animation: rotate 4s linear infinite;
    opacity: 0.3;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.trust-badge {
    background: var(--white-transparent);
    backdrop-filter: blur(12px);
    padding: 8px 16px;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    color: var(--primary-indigo);
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.hero-visual {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.hero-mockup {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.mock-response {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-left: 4px solid;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.mock-response::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--model-color) 0%, var(--model-color) 100%);
    opacity: 0.05;
    z-index: 0;
}

.mock-response strong {
    position: relative;
    z-index: 1;
    font-weight: 600;
}

.mock-response p {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-top: 0.5rem;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}

/* Model-specific colors */
.mock-response[data-model="analytical"] {
    border-left-color: var(--primary-indigo);
}

.mock-response[data-model="analytical"] strong {
    color: var(--primary-indigo);
}

.mock-response[data-model="creative"] {
    border-left-color: var(--secondary-purple);
}

.mock-response[data-model="creative"] strong {
    color: var(--secondary-purple);
}

.mock-response[data-model="technical"] {
    border-left-color: var(--accent-pink);
}

.mock-response[data-model="technical"] strong {
    color: var(--accent-pink);
}

.mock-response[data-model="business"] {
    border-left-color: var(--success);
}

.mock-response[data-model="business"] strong {
    color: var(--success);
}

/* Section Styling */
section {
    padding: 120px 2rem;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--medium-gray);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

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

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

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

/* Problem Cards */
.problem-card {
    background: white;
    border-radius: 1.5rem;
    padding: 2rem;
    border-top: 4px solid;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--problem-color) 0%, var(--problem-color-dark) 100%);
}

.icon-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--problem-color) 0%, var(--problem-color-dark) 100%);
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.icon-circle i {
    font-size: 2rem;
    color: white;
}

/* Problem-specific colors */
.problem-card[data-problem="bias"] {
    --problem-color: var(--error);
    --problem-color-dark: #DC2626;
}

.problem-card[data-problem="picture"] {
    --problem-color: var(--warning);
    --problem-color-dark: #D97706;
}

.problem-card[data-problem="validation"] {
    --problem-color: var(--info);
    --problem-color-dark: #2563EB;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card-description {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* Feature Cards */
.feature-card {
    background: white;
    border-radius: 1.5rem;
    padding: 2.5rem;
    border: 2px solid var(--glass-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--feature-color) 0%, var(--feature-color-dark) 100%);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--feature-color) 0%, var(--feature-color-dark) 100%);
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.feature-icon i {
    font-size: 1.75rem;
    color: white;
}

.feature-icon:hover {
    transform: scale(1.1);
    transition: transform var(--transition-fast);
}

.card-title {
    margin-top: 0;
    margin-bottom: 1rem;
}

.card-description {
    color: var(--medium-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* Feature-specific colors */
.feature-card[data-feature="comparison"] {
    --feature-color: var(--primary-indigo);
    --feature-color-dark: #4F46E5;
}

.feature-card[data-feature="perspectives"] {
    --feature-color: var(--secondary-purple);
    --feature-color-dark: #9333EA;
}

.feature-card[data-feature="synthesis"] {
    --feature-color: var(--accent-pink);
    --feature-color-dark: #DB2777;
}

.feature-card[data-feature="cost"] {
    --feature-color: var(--success);
    --feature-color-dark: #059669;
}

.feature-card[data-feature="analytics"] {
    --feature-color: var(--info);
    --feature-color-dark: #2563EB;
}

.feature-card[data-feature="offline"] {
    --feature-color: var(--warning);
    --feature-color-dark: #D97706;
}

/* Steps Timeline */
.steps-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    padding: 2rem 0;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    width: 80%;
    height: 4px;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    z-index: 0;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
    animation: float 6s ease-in-out infinite;
}

.step-icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step-icon i {
    font-size: 1.5rem;
    color: inherit;
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step-description {
    color: var(--medium-gray);
    line-height: 1.7;
    max-width: 300px;
    margin: 0 auto;
}

/* Step animation delays */
.step[data-step="2"] {
    animation-delay: 200ms;
}

.step[data-step="3"] {
    animation-delay: 400ms;
}

/* Model Cards */
.model-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    border-left: 4px solid;
    transition: all var(--transition-normal);
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.model-card:hover {
    transform: scale(1.02);
    box-shadow: 0 0 30px var(--model-color);
}

.model-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--model-color) 0%, var(--model-color) 100%);
    opacity: 0.05;
    z-index: 0;
}

.model-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: var(--model-color);
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.model-icon i {
    font-size: 1.5rem;
    color: white;
}

.model-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    position: relative;
    z-index: 1;
}

.model-provider {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
}

.model-description {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-bottom: 0.75rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.use-case-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-indigo);
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* Model-specific colors */
.model-card[data-model="analytical"] {
    --model-color: var(--primary-indigo);
    border-left-color: var(--primary-indigo);
}

.model-card[data-model="creative"] {
    --model-color: var(--secondary-purple);
    border-left-color: var(--secondary-purple);
}

.model-card[data-model="technical"] {
    --model-color: var(--info);
    border-left-color: var(--info);
}

.model-card[data-model="business"] {
    --model-color: var(--success);
    border-left-color: var(--success);
}

.model-card[data-model="scientific"] {
    --model-color: #06B6D4;
    border-left-color: #06B6D4;
}

.model-card[data-model="empathetic"] {
    --model-color: var(--accent-pink);
    border-left-color: var(--accent-pink);
}

.model-card[data-model="educational"] {
    --model-color: var(--secondary-purple);
    border-left-color: var(--secondary-purple);
}

.model-card[data-model="conversational"] {
    --model-color: var(--warning);
    border-left-color: var(--warning);
}

/* Model card animation delays */
.model-card:nth-child(2) { animation-delay: 50ms; }
.model-card:nth-child(3) { animation-delay: 100ms; }
.model-card:nth-child(4) { animation-delay: 150ms; }
.model-card:nth-child(5) { animation-delay: 200ms; }
.model-card:nth-child(6) { animation-delay: 250ms; }
.model-card:nth-child(7) { animation-delay: 300ms; }
.model-card:nth-child(8) { animation-delay: 350ms; }

.model-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.model-provider {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-bottom: 0.75rem;
}

.model-description {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.use-case-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-indigo);
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Use Case Cards */
.use-case-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-radius: 1.5rem;
    padding: 2.5rem;
    border-top: 4px solid;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 6px var(--glass-shadow);
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.use-case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px var(--glass-shadow-heavy);
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--usecase-color) 0%, var(--usecase-color-dark) 100%);
}

.icon-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--usecase-color) 0%, var(--usecase-color-dark) 100%);
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.example-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px) saturate(180%);
    -webkit-backdrop-filter: blur(8px) saturate(180%);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin: 1rem 0;
    border: 1px solid var(--light-gray);
}

.model-pills {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.model-pill {
    padding: 4px 10px;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

/* Use Case-specific colors */
.use-case-card[data-use-case="development"] {
    --usecase-color: var(--info);
    --usecase-color-dark: #2563EB;
    border-top-color: var(--info);
}

.use-case-card[data-use-case="content"] {
    --usecase-color: var(--secondary-purple);
    --usecase-color-dark: #9333EA;
    border-top-color: var(--secondary-purple);
}

.use-case-card[data-use-case="research"] {
    --usecase-color: #06B6D4;
    --usecase-color-dark: #0891B2;
    border-top-color: #06B6D4;
}

.use-case-card[data-use-case="business"] {
    --usecase-color: var(--success);
    --usecase-color-dark: #059669;
    border-top-color: var(--success);
}

.use-case-card[data-use-case="support"] {
    --usecase-color: var(--accent-pink);
    --usecase-color-dark: #DB2777;
    border-top-color: var(--accent-pink);
}

.use-case-card[data-use-case="teaching"] {
    --usecase-color: var(--secondary-purple);
    --usecase-color-dark: #7C3AED;
    border-top-color: var(--secondary-purple);
}

/* Model Pill Colors */
.model-pill[data-model="technical"] { background: var(--info); }
.model-pill[data-model="analytical"] { background: var(--primary-indigo); }
.model-pill[data-model="critical"] { background: var(--error); }
.model-pill[data-model="creative"] { background: var(--secondary-purple); }
.model-pill[data-model="conversational"] { background: var(--warning); }
.model-pill[data-model="business"] { background: var(--success); }
.model-pill[data-model="scientific"] { background: #06B6D4; }
.model-pill[data-model="educational"] { background: var(--secondary-purple); }
.model-pill[data-model="empathetic"] { background: var(--accent-pink); }
.model-pill[data-model="practical"] { background: var(--medium-gray); }

/* Use Case Card Animation Delays */
.use-case-card:nth-child(2) { animation-delay: 100ms; }
.use-case-card:nth-child(3) { animation-delay: 200ms; }
.use-case-card:nth-child(4) { animation-delay: 300ms; }
.use-case-card:nth-child(5) { animation-delay: 400ms; }
.use-case-card:nth-child(6) { animation-delay: 500ms; }

/* Pricing Cards */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-radius: 1.5rem;
    padding: 3rem;
    border-top: 4px solid;
    transition: all var(--transition-normal);
    position: relative;
    box-shadow: 0 20px 25px -5px var(--glass-shadow);
    border: 1px solid var(--glass-border);
}

.pricing-card.featured {
    transform: scale(1.05);
    border: 2px solid;
    border-image: linear-gradient(135deg, #6366F1, #8B5CF6, #EC4899) 1;
    box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.3);
    z-index: 10;
}

.pricing-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.pricing-badge.badge-popular {
    background: linear-gradient(135deg, #6366F1, #8B5CF6, #EC4899);
    color: white;
}

.pricing-price {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.pricing-unit {
    margin-top: -1rem; 
    margin-bottom: 0.5rem; 
    color: var(--medium-gray); 
    font-size: 0.875rem;
}

.pricing-description {
    color: var(--medium-gray);
    margin-bottom: 2rem;
}

/* Pricing Tier Colors */
.pricing-card[data-tier="free"] {
    border-top-color: var(--success);
}

.pricing-card[data-tier="free"] .pricing-badge {
    background: var(--success);
    color: white;
}

.pricing-card[data-tier="enterprise"] {
    border-top-color: var(--secondary-purple);
}

.pricing-card[data-tier="enterprise"] .pricing-badge {
    background: var(--secondary-purple);
    color: white;
}

/* Pricing Card Animation Delays */
.pricing-card[data-tier="popular"] { animation-delay: 100ms; }
.pricing-card[data-tier="enterprise"] { animation-delay: 200ms; }

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    padding-left: 0;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--dark-text);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-features li:before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: var(--success);
    font-size: 1.25rem;
    margin-right: 0.75rem;
}

/* Pricing Card Hover Effects */
.pricing-card:not(.featured):hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px var(--glass-shadow-heavy);
}

/* Pricing Card Focus States */
.pricing-card:focus-within {
    outline: 2px solid var(--primary-indigo);
    outline-offset: 2px;
}

/* Stats */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    margin: 4rem 0;
}

.stat {
    text-align: center;
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    color: white;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.stat-icon i {
    font-size: 2rem;
    color: white;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--medium-gray);
    font-size: 1rem;
}

/* Testimonials */
.testimonial-card {
    background: var(--white-transparent);
    backdrop-filter: blur(12px);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: all 300ms cubic-bezier(0, 0, 0.2, 1);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.testimonial-quote {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--dark-text);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366F1 0%, #EC4899 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.testimonial-avatar i {
    font-size: 1.5rem;
    color: white;
}

.testimonial-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.testimonial-role {
    font-size: 0.875rem;
    color: var(--medium-gray);
}

.testimonial-rating {
    margin-top: 1rem;
    color: #F59E0B;
    font-size: 1.25rem;
}

.testimonial-rating i {
    margin-right: 0.25rem;
    color: #F59E0B;
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-radius: 1rem;
    margin-bottom: 1rem;
    border-left: 4px solid;
    border-left-color: var(--primary-indigo);
    overflow: hidden;
    box-shadow: 0 4px 6px var(--glass-shadow);
    border: 1px solid var(--glass-border);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: rgba(99, 102, 241, 0.05);
}

.faq-icon {
    font-size: 1.5rem;
    transition: transform var(--transition-normal);
}

.faq-icon i {
    font-size: 1.5rem;
    color: inherit;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) cubic-bezier(0, 0, 0.2, 1);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--medium-gray);
    line-height: 1.7;
}

/* FAQ Focus States */
.faq-item:focus-within {
    outline: 2px solid var(--primary-indigo);
    outline-offset: 2px;
}

/* FAQ Accessibility */
.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer[aria-hidden="true"] {
    display: none;
}

.faq-answer[aria-hidden="false"] {
    display: block;
}

/* Final CTA */
.final-cta {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
    color: white;
    text-align: center;
}

.final-cta h2 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: 1rem;
}

.final-cta .subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

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

.final-cta .btn-secondary {
    border-color: white;
    color: white;
}

.final-cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.final-trust-badges {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 2rem;
    color: white;
    font-size: 0.875rem;
}

.final-trust-badges span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Footer */
footer {
    background: #1E293B;
    color: white;
    padding: 80px 2rem 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    max-width: 1280px;
    margin: 0 auto 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-brand .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 1rem;
    animation: none;
    position: relative;
    overflow: hidden;
}

.footer-brand .logo-icon i {
    font-size: 1rem;
    color: white;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.footer-description {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-icon i {
    font-size: 1rem;
    color: white;
}

.social-icon:hover {
    background: linear-gradient(135deg, #6366F1 0%, #EC4899 100%);
    transform: translateY(-2px);
}

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: white;
}

.footer-links {
    list-style: none;
    padding-left: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* Footer Focus States */
.footer-links a:focus {
    outline: 2px solid var(--white);
    outline-offset: 2px;
}

/* Footer Accessibility */
.footer-links a:focus-visible {
    outline: 2px solid var(--white);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 3.5rem;
    }

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

    .trust-badges {
        justify-content: center;
    }

    .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-container {
        flex-direction: column;
        gap: 2rem;
    }

    .steps-container::before {
        display: none;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

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

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

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

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

    .hero-ctas {
        flex-direction: column;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

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

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

    .final-cta h2 {
        font-size: 2rem;
    }
}