/* Modern Vercel-inspired AERPS Design */
:root {
    /* Colors - Vercel Dark Theme Inspired */
    --background: #000000;
    --background-secondary: #0a0a0a;
    --surface: #111111;
    --surface-hover: #1a1a1a;
    --border: #333333;
    --border-light: #404040;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a1a1a1;
    --text-muted: #666666;
    
    /* Brand Colors */
    --primary: #0070f3;
    --primary-hover: #0061d5;
    --secondary: #7c3aed;
    --accent: #00d9ff;
    --success: #00ff88;
    --warning: #ff6b00;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hero: linear-gradient(135deg, #000000 0%, #1a1a2e 50%, #16213e 100%);
    --gradient-surface: linear-gradient(145deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%);
    --gradient-button: linear-gradient(135deg, #0070f3 0%, #00d9ff 100%);
    --gradient-accent: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
    
    /* Shadows */
    --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);
    --shadow-glow: 0 0 20px rgba(0, 112, 243, 0.3);
    
    /* Typography */
    --font-inter: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-inter);
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Background Animations */
.bg-animations {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.comet {
    position: absolute;
    width: 150px;
    height: 150px;
    opacity: 0.6;
    filter: blur(1px);
}

.comet-1 {
    top: 20%;
    left: 10%;
    animation: float 20s ease-in-out infinite;
}

.comet-2 {
    top: 60%;
    right: 15%;
    animation: float 25s ease-in-out infinite reverse;
}

.comet-3 {
    bottom: 30%;
    left: 20%;
    animation: float 30s ease-in-out infinite;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: pulse 8s ease-in-out infinite;
}

.gradient-orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 112, 243, 0.3) 0%, transparent 70%);
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.gradient-orb-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, transparent 70%);
    top: 50%;
    right: -5%;
    animation-delay: 2s;
}

.gradient-orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.2) 0%, transparent 70%);
    bottom: 20%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(90deg); }
    50% { transform: translate(-20px, 20px) rotate(180deg); }
    75% { transform: translate(-30px, -10px) rotate(270deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-inter);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #a1a1a1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

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

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-sm) 0;
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--gradient-button);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

header ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

header ul a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

header ul a:hover {
    color: var(--text-primary);
}

/* Buttons */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.cta-button-primary {
    background: var(--gradient-button);
    color: white;
    box-shadow: var(--shadow-glow);
}

.cta-button-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 112, 243, 0.4);
}

.cta-button-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.cta-button-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

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

.hero-content h1 {
    margin-bottom: var(--spacing-lg);
}

.subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-actions .cta-button {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* AI Logos Section */
.ai-logos {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.ai-logos > span:first-child {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.logos-grid {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

.logo-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.logo-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.ai-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.chatgpt-icon {
    background: linear-gradient(135deg, #10a37f 0%, #1eb854 100%);
}

.claude-icon {
    background: linear-gradient(135deg, #cc785c 0%, #f4a261 100%);
}

.gemini-icon {
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
}

.logo-item span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.more-ai {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Sections */
section {
    position: relative;
    z-index: 1;
    padding: var(--spacing-3xl) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

section:nth-child(even) {
    background: var(--background-secondary);
}

/* Problem Solution Sections */
.problem-solution-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.problem-solution-section > .container > p {
    text-align: center;
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl) auto;
}

.problem-points,
.solution-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.problem-points > div,
.solution-point {
    padding: var(--spacing-xl);
    background: var(--gradient-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.problem-points > div:hover,
.solution-point:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-button);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
    margin: 0 auto var(--spacing-md) auto;
    transition: all 0.3s ease;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    stroke: white;
}

.problem-points h3,
.solution-point h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

/* Features Section */
.features-section {
    background: var(--background);
}

.features-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.features-section ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    list-style: none;
}

.features-section li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--gradient-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.features-section li:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.features-section .feature-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    margin: 0;
    margin-top: 2px;
}

.features-section .feature-icon svg {
    width: 20px;
    height: 20px;
}

.features-section li span {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Why AERPS Section */
.why-aerps-section {
    text-align: center;
}

.why-aerps-section h2 {
    margin-bottom: var(--spacing-lg);
}

.why-aerps-section > .container > p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl) auto;
}

.dashboard-preview {
    width: 100%;
    height: 400px;
    background: var(--gradient-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.2rem;
    font-weight: 500;
}

/* Social Proof Section */
.social-proof-section {
    text-align: center;
    background: var(--background-secondary);
}

.social-proof-section h2 {
    margin-bottom: var(--spacing-3xl);
}

.social-proof-section .logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

.company-logo {
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.company-logo:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Waitlist Section */
.waitlist-section {
    background: var(--gradient-hero);
    text-align: center;
}

.waitlist-section h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.waitlist-section > .container > p:first-of-type {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
}

#waitlistForm {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--spacing-3xl);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}

#waitlistForm h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

#waitlistForm p:first-of-type {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.1);
}

#waitlistForm .cta-button {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
    margin-top: var(--spacing-md);
}

.form-message.success {
    background: rgba(0, 255, 136, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.form-message.error {
    background: rgba(255, 107, 0, 0.1);
    color: var(--warning);
    border: 1px solid var(--warning);
}

/* Footer */
footer {
    background: var(--background);
    border-top: 1px solid var(--border);
    padding: var(--spacing-3xl) 0 var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    justify-content: between;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-logo .tagline {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: var(--spacing-3xl);
    flex: 1;
    justify-content: flex-end;
}

.footer-links div {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links h4 {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    header ul {
        display: none;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .cta-button {
        width: 100%;
        max-width: 300px;
    }
    
    .logos-grid {
        gap: var(--spacing-md);
    }
    
    .problem-points,
    .solution-points {
        grid-template-columns: 1fr;
    }
    
    .features-section ul {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
        gap: var(--spacing-xl);
    }
    
    .social-proof-section .logos {
        gap: var(--spacing-lg);
    }
    
    .comet {
        width: 100px;
        height: 100px;
    }
    
    .gradient-orb {
        width: 200px !important;
        height: 200px !important;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 0 var(--spacing-sm);
    }
    
    .logos-grid {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

/* Smooth animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}