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

:root {
    --color-navy: #1a2332;
    --color-navy-dark: #0f1419;
    --color-white: #ffffff;
    --color-gray-light: #f5f5f5;
    --color-gray: #e8e8e8;
    --color-gray-medium: #9a9a9a;
    --color-gray-dark: #4a4a4a;
    --color-accent: #5a7fa8;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --max-width: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-navy);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, var(--color-navy-dark) 0%, var(--color-navy) 100%);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.logo-container {
    margin-bottom: var(--spacing-lg);
}

.logo {
    max-width: 200px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.hero-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-subheading {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--color-white);
    color: var(--color-navy);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 1rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

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

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    letter-spacing: -0.02em;
}

/* What OKLA Is */
.what-is {
    background-color: var(--color-white);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.content-block {
    padding: var(--spacing-md);
}

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

/* How It Works */
.how-it-works {
    background-color: var(--color-gray-light);
}

.three-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.column-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.column-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

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

.column-card ul {
    list-style: none;
}

.column-card li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-gray-dark);
    line-height: 1.8;
}

.column-card li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 500;
}

/* Why OKLA */
.why-okla {
    background-color: var(--color-white);
}

.feature-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.feature-list li {
    padding: var(--spacing-md) 0;
    padding-left: 2rem;
    position: relative;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-gray-dark);
    border-bottom: 1px solid var(--color-gray);
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 1.2rem;
}

/* Contact Section */
.contact {
    background-color: var(--color-gray-light);
}

.contact-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-options {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.contact-link {
    font-size: 1.2rem;
    color: var(--color-navy);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-block;
}

.contact-link:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-navy);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-gray);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--color-white);
    color: var(--color-navy);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(90, 127, 168, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-navy);
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.submit-button:hover {
    background-color: var(--color-navy-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.hidden {
    display: none;
}

/* Footer */
.footer {
    background-color: var(--color-navy);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer p {
    margin: var(--spacing-xs) 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer a {
    color: var(--color-white);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero {
        min-height: 90vh;
        padding: var(--spacing-md) 0;
    }
    
    .logo {
        max-width: 150px;
    }
    
    .content-grid,
    .three-columns {
        grid-template-columns: 1fr;
    }
    
    .column-card {
        padding: var(--spacing-md);
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-headline {
        font-size: 1.75rem;
    }
    
    .hero-subheading {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 0.875rem 2rem;
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}