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

:root {
    /* Color Palette */
    --primary-color: #0066cc;
    --secondary-color: #00a8ff;
    --accent-color: #ff6b6b;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    
    /* Neutral Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #00a8ff 100%);
    --gradient-secondary: linear-gradient(135deg, #ff6b6b 0%, #ff8e8e 100%);
    --gradient-neural: linear-gradient(45deg, #0066cc, #00a8ff, #ff6b6b, #ffb347);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(0, 166, 255, 0.3);
    
    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Global Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    position: relative;
}

/* Particle Canvas */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* Container */
.container {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

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

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    color: var(--secondary-color);
    border-color: var(--secondary-color);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.nav-icon {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.nav-link:hover .nav-icon {
    opacity: 1;
}

.auth-link {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
}

.auth-link:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--secondary-color);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
}

/* Hero Section */
.hero-section {
    text-align: center;
    position: relative;
    padding: var(--spacing-2xl) 0;
}

.ai-brain-animation {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    z-index: -1;
    opacity: 0.1;
}

.brain-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-neural);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

.brain-waves {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: wave 4s ease-in-out infinite;
}

.brain-waves::before,
.brain-waves::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid var(--secondary-color);
    border-radius: 50%;
    animation: wave 4s ease-in-out infinite;
}

.brain-waves::before {
    width: 150px;
    height: 150px;
    animation-delay: 0.5s;
}

.brain-waves::after {
    width: 250px;
    height: 250px;
    animation-delay: 1s;
}

.data-streams {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.data-streams::before,
.data-streams::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 50px;
    background: var(--gradient-primary);
    animation: dataFlow 2s ease-in-out infinite;
}

.data-streams::before {
    top: 20%;
    left: 20%;
    animation-delay: 0.5s;
}

.data-streams::after {
    bottom: 20%;
    right: 20%;
    animation-delay: 1s;
}

.hero-text {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.typing-text {
    display: inline-block;
    position: relative;
}

.cursor {
    display: inline-block;
    background: var(--primary-color);
    animation: blink 1s infinite;
    width: 2px;
    margin-left: 2px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--success-color);
}

.status-dot.pulsing {
    animation: pulse 2s ease-in-out infinite;
}

.status-text {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.feature-card {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
}

.feature-card:hover::before {
    opacity: 0.1;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-card > * {
    position: relative;
    z-index: 2;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
}

.icon-ai,
.icon-code,
.icon-innovation {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-ai::before {
    content: '🤖';
    font-size: 2rem;
}

.icon-code::before {
    content: '💻';
    font-size: 2rem;
}

.icon-innovation::before {
    content: '🚀';
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

/* Countdown Section */
.countdown-section {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.countdown-section h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.time-unit {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    min-width: 100px;
    text-align: center;
    border: 2px solid var(--bg-tertiary);
    transition: all var(--transition-normal);
}

.time-unit:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.time-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--primary-color);
    line-height: 1;
}

.time-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.time-separator {
    font-size: 2rem;
    color: var(--text-tertiary);
    font-weight: 700;
}

/* Email Signup */
.email-signup {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin: var(--spacing-2xl) 0;
}

.email-signup h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.email-signup p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.signup-form {
    max-width: 500px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.input-group input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.submit-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading .btn-loader {
    opacity: 1;
}

.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid var(--text-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn-loader.hidden {
    display: none;
}

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    text-align: center;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(-10px);
}

.form-message.show {
    opacity: 1;
    transform: translateY(0);
}

.form-message.success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.form-message.error {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--bg-tertiary);
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    text-decoration: none;
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
}

.loading-logo {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
}

.loading-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.loading-word {
    margin-right: var(--spacing-xs);
}

.loading-dots {
    display: inline-block;
}

.dot {
    animation: loadingDots 1.5s ease-in-out infinite;
}

.dot:nth-child(1) {
    animation-delay: 0s;
}

.dot:nth-child(2) {
    animation-delay: 0.2s;
}

.dot:nth-child(3) {
    animation-delay: 0.4s;
}

.loading-bar {
    width: 300px;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    background: var(--gradient-primary);
    animation: loadingProgress 2s ease-in-out infinite;
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes innerPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.6;
    }
}

@keyframes rotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

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

@keyframes dataFlow {
    0% {
        transform: translateY(0);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px);
        opacity: 0;
    }
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes loadingDots {
    0%, 80%, 100% {
        opacity: 0;
    }
    40% {
        opacity: 1;
    }
}

@keyframes loadingProgress {
    0% {
        width: 0%;
        transform: translateX(-100%);
    }
    50% {
        width: 100%;
        transform: translateX(0%);
    }
    100% {
        width: 100%;
        transform: translateX(100%);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-md) 0;
    }
    
    .nav {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .nav-link {
        padding: var(--spacing-sm);
        font-size: 0.85rem;
    }
    
    .nav-text {
        display: none;
    }
    
    .auth-link {
        width: auto;
        justify-content: center;
    }
    
    .logo {
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-section {
        padding: var(--spacing-md) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .countdown {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .countdown-timer {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .time-unit {
        min-width: 60px;
    }
    
    .time-number {
        font-size: 2rem;
    }
    
    .email-signup {
        padding: var(--spacing-lg);
    }
    
    .input-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .email-input {
        width: 100%;
    }
    
    .submit-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .countdown-timer {
        gap: var(--spacing-xs);
    }
    
    .time-unit {
        min-width: 50px;
    }
    
    .time-number {
        font-size: 1.5rem;
    }
    
    .time-label {
        font-size: 0.7rem;
    }
}