/* Local Fonts */
@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

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

:root {
    /* Professional Color Palette */
    --color-slate: hsl(220, 13%, 18%);
    --color-blue: hsl(217, 91%, 50%);
    --color-navy: hsl(217, 33%, 17%);
    --color-gray: hsl(220, 13%, 60%);
    --color-light: hsl(220, 14%, 96%);
    --color-white: hsl(0, 0%, 100%);
    
    /* Typography Scale */
    --text-hero: clamp(2.5rem, 5vw, 3.5rem);
    --text-section: clamp(1.75rem, 4vw, 2.25rem);
    --text-card: 1.25rem;
    --text-body: 1rem;
    --text-small: 0.875rem;
    
    /* Spacing Scale */
    --space-section: clamp(4rem, 8vw, 6rem);
    --space-card: 2rem;
    --space-lg: 3rem;
    --space-md: 1.5rem;
    --space-sm: 1rem;
    --space-xs: 0.5rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    --border-radius: 0.75rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-slate);
    background-color: var(--color-white);
    font-size: var(--text-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

h1 {
    font-size: var(--text-hero);
    font-weight: 700;
}

h2 {
    font-size: var(--text-section);
}

h3 {
    font-size: var(--text-card);
}

p {
    margin-bottom: var(--space-sm);
    color: var(--color-gray);
}

/* Layout Components */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-section) 0;
}

.section-alt {
    background-color: var(--color-light);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-lg);
    color: var(--color-slate);
}

.content-block {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.content-block p {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-blue), var(--color-navy));
    color: var(--color-white);
    padding: var(--space-section) 0;
    text-align: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-title {
    color: var(--color-white);
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

/* Buttons */
.cta-button {
    display: inline-block;
    background-color: var(--color-white);
    color: var(--color-blue);
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: var(--transition);
    border: 2px solid transparent;
}

.cta-button:hover {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.section .cta-button {
    background-color: var(--color-blue);
    color: var(--color-white);
    margin-top: var(--space-md);
}

.section .cta-button:hover {
    background-color: var(--color-navy);
    border-color: var(--color-blue);
    color: var(--color-white);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-card);
    margin-top: var(--space-lg);
}

.card {
    background: var(--color-white);
    padding: var(--space-card);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    border: 1px solid hsl(220, 13%, 91%);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-blue), var(--color-navy));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--color-white);
}

.card-title {
    color: var(--color-slate);
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.card-description {
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Footer */
.footer {
    background-color: var(--color-slate);
    color: var(--color-white);
    padding: var(--space-card) 0;
    text-align: center;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: var(--text-small);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --space-section: 3rem;
        --space-card: 1.5rem;
    }
    
    .hero {
        min-height: 80vh;
        padding: 4rem 0;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .card {
        padding: var(--space-md);
    }
    
    .cta-button {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 0.875rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .content-block p {
        font-size: 1rem;
    }
}

/* Focus Styles for Accessibility */
.cta-button:focus {
    outline: 2px solid var(--color-blue);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print Styles */
@media print {
    .hero {
        background: none;
        color: var(--color-slate);
        min-height: auto;
        padding: 2rem 0;
    }
    
    .cta-button {
        background: none;
        color: var(--color-slate);
        border: 1px solid var(--color-slate);
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--color-gray);
    }
}