/* Delta BOM Landing Page Styles */

:root {
    --primary-color: #1B3A5C;
    --accent-color: #2E7D32;
    --secondary-color: #555555;
    --light-gray: #F8F9FA;
    --white: #FFFFFF;
    --dark-gray: #2C3E50;
    --border-color: #D5E0E7;
}

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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark-gray);
    line-height: 1.6;
}

.delta-bom-container {
    max-width: 100%;
    overflow-x: hidden;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2A5484 100%);
    color: var(--white);
    padding: 100px 20px;
    text-align: center;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.headline {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.subheadline {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 40px;
    opacity: 0.95;
    font-weight: 400;
}

/* Form Styles */
.signup-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.signup-form input {
    padding: 14px 16px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    background: var(--white);
    color: var(--dark-gray);
    transition: box-shadow 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.signup-form input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.signup-form input::placeholder {
    color: #999;
}

.cta-button {
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    background: var(--accent-color);
    color: var(--white);
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
    letter-spacing: 0.3px;
}

.cta-button:hover {
    background-color: #0f8a31;
    transform: translateY(-2px);
}

.cta-button:active {
    transform: translateY(0);
}

.cta-subtext {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 12px;
    letter-spacing: 0.2px;
}

/* Features Section */
.features {
    background: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.features h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--dark-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    padding: 32px 24px;
    border-radius: 8px;
    background: var(--white);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(27, 58, 92, 0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.feature-card p {
    font-size: 15px;
    color: var(--secondary-color);
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    background: var(--light-gray);
    padding: 80px 20px;
    text-align: center;
}

.how-it-works h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--dark-gray);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    background: var(--white);
    padding: 36px 28px;
    border-radius: 8px;
    position: relative;
    border-left: 4px solid var(--accent-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(27, 58, 92, 0.12);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
}

.step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark-gray);
}

.step p {
    font-size: 15px;
    color: var(--secondary-color);
    line-height: 1.6;
}

/* Final CTA Section */
.final-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2A5484 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.final-cta h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--white);
}

.final-cta > p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.final-cta .signup-form {
    max-width: 600px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 24px 20px;
    text-align: center;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .headline {
        font-size: 32px;
    }

    .subheadline {
        font-size: 16px;
    }

    .features h2,
    .how-it-works h2,
    .final-cta h2 {
        font-size: 28px;
    }

    .features,
    .how-it-works,
    .final-cta {
        padding: 60px 20px;
    }

    .signup-form {
        flex-direction: column;
    }

    .signup-form input,
    .cta-button {
        width: 100%;
    }

    .hero {
        padding: 60px 20px;
        min-height: auto;
    }
}

@media (max-width: 480px) {
    .headline {
        font-size: 24px;
    }

    .subheadline {
        font-size: 15px;
    }

    .features h2,
    .how-it-works h2,
    .final-cta h2 {
        font-size: 22px;
        margin-bottom: 40px;
    }

    .features-grid,
    .steps {
        gap: 20px;
    }

    .feature-card,
    .step {
        padding: 24px 16px;
    }
}

/* Loading and success states */
.form-loading {
    opacity: 0.6;
    pointer-events: none;
}

.form-success {
    background-color: #d4edda;
    color: #155724;
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 14px;
}

.form-error {
    background-color: #f8d7da;
    color: #721c24;
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 14px;
}