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

:root {
    /* Kubernetes-inspired blue color palette */
    --primary-blue: #326ce5;
    --dark-blue: #1e3a8a;
    --light-blue: #60a5fa;
    --navy: #1e293b;
    --slate: #334155;
    --gray-light: #f8fafc;
    --gray-medium: #64748b;
    --success-green: #10b981;
    --text-dark: #0f172a;
    --text-light: #475569;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 50%, var(--navy) 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: 2rem 0;
    text-align: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: white;
    letter-spacing: -0.5px;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem 0;
}

.hero-section {
    max-width: 700px;
    margin-bottom: 4rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    font-weight: 300;
    line-height: 1.6;
}

/* Email Form */
.email-form {
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    max-width: 520px;
    margin: 0 auto 1rem;
    background: white;
    border-radius: 12px;
    padding: 4px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(96, 165, 250, 0.3);
}

.email-input {
    flex: 1;
    border: none;
    padding: 1.2rem 1.5rem;
    font-size: 1rem;
    border-radius: 8px;
    outline: none;
    background: transparent;
    color: var(--text-dark);
}

.email-input::placeholder {
    color: var(--gray-medium);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: white;
    border: none;
    padding: 1.2rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(50, 108, 229, 0.4);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(50, 108, 229, 0.6);
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--primary-blue) 100%);
}

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

.form-note {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* Success Message */
.success-message {
    display: none;
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 450px;
    margin: 0 auto;
    border: 1px solid rgba(96, 165, 250, 0.3);
}

.success-message.show {
    display: block;
    animation: slideUp 0.5s ease;
}

.success-icon {
    font-size: 3rem;
    color: var(--success-green);
    margin-bottom: 1rem;
}

.success-content h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.success-content p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* Features Preview */
.features-preview {
    width: 100%;
    max-width: 1000px;
    margin-bottom: 4rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(96, 165, 250, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-item p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Value Proposition */
.value-proposition {
    max-width: 600px;
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 3rem 2.5rem;
}

.value-title {
    color: white;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.value-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.7;
    font-weight: 300;
}

/* Footer */
.footer {
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

.social-links {
    margin-bottom: 1rem;
}

.social-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin: 0 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 6px;
}

.social-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.footer-text {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .input-group {
        flex-direction: column;
        gap: 0.5rem;
        max-width: 400px;
    }
    
    .submit-btn {
        width: 100%;
        margin-top: 0.5rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .value-proposition {
        padding: 2rem 1.5rem;
    }
    
    .value-title {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .feature-item {
        padding: 2rem 1.5rem;
    }
    
    .value-proposition {
        padding: 1.5rem;
    }
}

/* Loading state for button */
.submit-btn.loading {
    background: var(--gray-medium);
    cursor: not-allowed;
    transform: none;
}

.submit-btn.loading:hover {
    transform: none;
    box-shadow: none;
}