/*
Theme Name: Echo Continuum Premium
Theme URI: https://echocontinuum.com
Author: Your Name
Author URI: https://echocontinuum.com
Description: A premium scientific digital immortality theme with sophisticated animations and modern design
Version: 2.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: echo-continuum-premium
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --primary: #00F0FF;
    --primary-dark: #00B8CC;
    --secondary: #8B5CF6;
    --dark: #0A0E27;
    --dark-blue: #0F172A;
    --darker: #020617;
    --gray: #64748B;
    --light-gray: #E2E8F0;
    --white: #FFFFFF;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #00F0FF 0%, #8B5CF6 100%);
    --gradient-3: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Navigation */
nav {
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1.5rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 240, 255, 0.1);
    transition: all 0.3s ease;
}

nav.scrolled {
    padding: 1rem 2rem;
    background: rgba(10, 14, 39, 0.95);
}

nav .container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 3rem;
    align-items: center;
}

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color 0.3s ease;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    transition: width 0.3s ease;
}

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

nav a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: var(--gradient-3);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 2rem 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    top: -10%;
    animation: float 15s infinite ease-in-out;
    box-shadow: 0 0 20px var(--primary);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(110vh) translateX(100px);
        opacity: 0;
    }
}

.hero-content {
    max-width: 1200px;
    text-align: center;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.gradient-text {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.outline-text {
    color: transparent;
    -webkit-text-stroke: 2px var(--primary);
    display: block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--light-gray);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    font-weight: 400;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.8s backwards;
}

.cta-primary {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: var(--gradient-2);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.cta-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.cta-primary:hover::before {
    left: 100%;
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(0, 240, 255, 0.4);
}

.cta-secondary {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: transparent;
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
    margin-top: 4rem;
    animation: fadeInUp 1s ease-out 1s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--gray);
    font-size: 0.85rem;
    animation: fadeInUp 1s ease-out 1.2s backwards;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    transform: rotate(-45deg);
    margin: 10px auto 0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(-45deg);
    }
    40% {
        transform: translateY(10px) rotate(-45deg);
    }
    60% {
        transform: translateY(5px) rotate(-45deg);
    }
}

/* Section Styling */
section {
    padding: 120px 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-label {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 50px;
    color: var(--secondary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.section-description {
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Process Section */
.process-section {
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}

.process-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    transform: translateX(-50%);
}

.process-step {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 6rem;
    position: relative;
}

.process-step:nth-child(odd) .step-visual {
    order: 2;
}

.process-step:nth-child(odd) .step-content {
    text-align: right;
}

.step-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 120px;
    height: 120px;
    background: var(--gradient-2);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.3);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.step-icon svg {
    width: 50px;
    height: 50px;
    color: var(--white);
}

.step-icon:hover {
    transform: scale(1.1) rotate(5deg);
}

.step-number {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 60px;
    height: 60px;
    background: var(--darker);
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    z-index: 3;
}

.step-content {
    padding: 2rem;
}

.step-content h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.step-content p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.step-features {
    list-style: none;
    padding: 0;
}

.step-features li {
    padding: 0.5rem 0;
    color: var(--dark);
    font-weight: 500;
    position: relative;
    padding-left: 2rem;
}

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

/* Science Section */
.science-section {
    background: var(--dark-blue);
    color: var(--white);
}

.science-section .section-label {
    background: rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
    color: var(--primary);
}

.science-section .section-title {
    color: var(--white);
}

.science-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.science-block {
    margin-bottom: 3rem;
}

.science-block h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.science-block p {
    font-size: 1.1rem;
    color: var(--light-gray);
    line-height: 1.8;
}

.science-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.metric {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    text-align: center;
}

.metric-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.metric-value sup {
    font-size: 1.5rem;
}

.metric-label {
    font-size: 0.9rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.science-visual {
    position: relative;
    height: 600px;
}

.neural-network {
    position: relative;
    width: 100%;
    height: 100%;
}

.neural-node {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--gradient-2);
    border-radius: 50%;
    box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
    animation: pulse 3s infinite ease-in-out;
}

.neural-node:nth-child(1) { top: 10%; left: 20%; animation-delay: 0s; }
.neural-node:nth-child(2) { top: 30%; left: 60%; animation-delay: 0.5s; }
.neural-node:nth-child(3) { top: 50%; left: 10%; animation-delay: 1s; }
.neural-node:nth-child(4) { top: 70%; left: 70%; animation-delay: 1.5s; }
.neural-node:nth-child(5) { top: 20%; left: 80%; animation-delay: 2s; }
.neural-node:nth-child(6) { top: 60%; left: 40%; animation-delay: 2.5s; }
.neural-node:nth-child(7) { top: 80%; left: 25%; animation-delay: 3s; }
.neural-node:nth-child(8) { top: 40%; left: 90%; animation-delay: 3.5s; }

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

/* Features Section */
.features-section {
    background: #F8FAFC;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 3rem;
    background: var(--white);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.feature-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1rem;
}

.feature-card p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}

/* Contact Section */
.contact-section {
    background: var(--gradient-3);
    color: var(--white);
}

.contact-section .section-label {
    background: rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
    color: var(--primary);
}

.contact-section .section-title {
    color: var(--white);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
}

.contact-description {
    font-size: 1.2rem;
    color: var(--light-gray);
    line-height: 1.8;
    margin-bottom: 3rem;
}

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

.benefit-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    color: var(--white);
}

.benefit-item svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-form-wrapper {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 3rem;
}

.contact-form .form-group {
    margin-bottom: 2rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--white);
    font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--white);
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

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

.contact-form .cta-primary {
    width: 100%;
    margin-top: 1rem;
}

/* Footer */
footer {
    background: var(--darker);
    color: var(--gray);
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .process-step {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .process-step:nth-child(odd) .step-visual {
        order: 1;
    }
    
    .process-step:nth-child(odd) .step-content {
        text-align: left;
    }
    
    .timeline-line {
        display: none;
    }
    
    .science-grid {
        grid-template-columns: 1fr;
    }
    
    .science-visual {
        height: 400px;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .cta-primary,
    .cta-secondary {
        width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 80px 1.5rem;
    }
}