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

:root {
    /* Color Palette */
    --primary: #667eea;
    --primary-dark: #764ba2;
    --secondary: #f093fb;
    --accent: #4facfe;
    --bg-dark: #0f0f23;
    --bg-darker: #050510;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --success: #10b981;
    --error: #ef4444;
    
    /* 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: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
}

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

/* Container */
.container {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, var(--bg-darker) 100%);
}

/* Background Animated Shapes */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: -250px;
    left: -250px;
    animation-delay: 0s;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent), var(--primary-dark));
    bottom: -200px;
    right: -200px;
    animation-delay: -5s;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    top: 50%;
    right: 10%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

/* Main Content */
.content {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* Brand Section */
.brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease-out;
}

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

.logo svg {
    filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.5));
    transition: transform var(--transition-base);
}

.logo:hover svg {
    transform: scale(1.1) rotate(5deg);
}

.brand-name {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

/* Headline */
.headline {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Description */
.description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
    animation: fadeInUp 1s ease-out 0.6s both;
}

/* Subscription Form */
.subscription-form {
    width: 100%;
    max-width: 550px;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 1s ease-out 0.8s both;
}

.form {
    width: 100%;
}

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

.email-input {
    flex: 1;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: all var(--transition-base);
}

.email-input::placeholder {
    color: var(--text-secondary);
}

.email-input:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.submit-btn {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.submit-btn:hover::before {
    opacity: 1;
}

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

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

.submit-btn svg {
    position: relative;
    z-index: 1;
}

.submit-btn span {
    position: relative;
    z-index: 1;
}

.form-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-secondary);
    justify-content: center;
}

.form-note svg {
    flex-shrink: 0;
}

/* Features Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 900px;
    margin-bottom: var(--spacing-2xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.feature-item.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

.feature-item:nth-child(1) { animation-delay: 0s; }
.feature-item:nth-child(2) { animation-delay: 0.1s; }
.feature-item:nth-child(3) { animation-delay: 0.2s; }

.feature-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-md);
    color: var(--primary);
    transition: all var(--transition-base);
}

.feature-item:hover .feature-icon {
    background: rgba(102, 126, 234, 0.2);
    transform: scale(1.1);
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.feature-item p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    width: 100%;
    max-width: 900px;
    animation: fadeInUp 1s ease-out 1s both;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

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

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .headline {
        font-size: 2.5rem;
    }
    
    .brand-name {
        font-size: 2rem;
    }
    
    .description {
        font-size: 1.125rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .submit-btn {
        width: 100%;
        justify-content: center;
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .headline {
        font-size: 2rem;
    }
    
    .brand-name {
        font-size: 1.75rem;
    }
    
    .description {
        font-size: 1rem;
    }
    
    .content {
        padding: var(--spacing-md);
    }
}

/* Loading State */
.submit-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
}

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