/* CSS Custom Properties */
:root {
    /* Colors */
    --color-primary: #007581;
    --color-text: #000000;
    --color-background: #fffef4;
    --color-background-alt: rgba(0, 117, 129, 0.02);
    --color-background-subtle: rgba(0, 117, 129, 0.05);
    --color-border: rgba(0, 117, 129, 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 150;
    --font-weight-normal: 200;
    --font-weight-medium: 250;
    --font-weight-semibold: 300;
    
    /* Font Sizes */
    --font-size-hero: 3.5rem;
    --font-size-h1: 2.5rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.5rem;
    --font-size-h4: 1.25rem;
    --font-size-h5: 1.125rem;
    --font-size-body: 1rem;
    --font-size-small: 0.95rem;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 5rem;
    --space-4xl: 6rem;
    
    /* Line Heights */
    --line-height-tight: 1.1;
    --line-height-normal: 1.3;
    --line-height-relaxed: 1.6;
    --line-height-loose: 1.8;
    
    /* Letter Spacing */
    --letter-spacing-tight: -0.03em;
    --letter-spacing-normal: -0.02em;
    --letter-spacing-wide: -0.01em;
    --letter-spacing-wider: 0.005em;
    --letter-spacing-widest: 0.01em;
    
    /* Container */
    --container-max-width: 1200px;
    --content-max-width: 800px;
    --content-narrow-width: 650px;
    --content-wide-width: 750px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Shadows */
    --shadow-subtle: 0 1px 3px rgba(0, 117, 129, 0.1);
    --shadow-card: 0 4px 6px rgba(0, 117, 129, 0.07), 0 1px 3px rgba(0, 117, 129, 0.1);
    --shadow-card-hover: 0 8px 25px rgba(0, 117, 129, 0.12), 0 4px 10px rgba(0, 117, 129, 0.08);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
}

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

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-loose);
    color: var(--color-text);
    background-color: var(--color-background);
    letter-spacing: var(--letter-spacing-widest);
}

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

section {
    padding: var(--space-2xl) 0;
}

/* Header */
header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) var(--space-xs);
}

.logo {
    display: inline-block;
    text-decoration: none;
}

.logo-img {
    height: 70px;
    width: auto;
    transition: opacity var(--transition-normal);
}

.logo:hover .logo-img {
    opacity: 0.8;
}

/* Navigation */
nav {
    display: flex;
    gap: var(--space-lg);
}

nav a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: var(--font-weight-normal);
    font-size: var(--font-size-body);
    transition: color var(--transition-normal);
}

nav a:hover {
    color: var(--color-primary);
}

/* Hero Section */
.hero {
    background: var(--color-background);
    padding: var(--space-4xl) 0;
    text-align: center;
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.hero-subtitle {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-light);
    color: var(--color-text);
    max-width: var(--content-wide-width);
    margin: 0 auto;
    line-height: var(--line-height-loose);
    letter-spacing: var(--letter-spacing-wider);
    opacity: 0.9;
}

/* Services Section */
.services {
    background: var(--color-background-alt);
    background-image: url('network.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    padding: var(--space-3xl) 0;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-background);
    opacity: 0.5;
    pointer-events: none;
}

.services .container {
    max-width: calc(var(--container-max-width) + 4rem);
    position: relative;
    z-index: 1;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.service-item {
    background: var(--color-background);
    padding: var(--space-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid var(--color-border);
    position: relative;
    backdrop-filter: blur(1px);
}

.service-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
}

.service-item:focus-within {
    transform: translateY(-1px);
    box-shadow: var(--shadow-card-hover);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.service-item h2 {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
}

.service-item p {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
    line-height: var(--line-height-loose);
    letter-spacing: var(--letter-spacing-wider);
}

/* About Section */
.about {
    background: var(--color-background-alt);
    padding: var(--space-2xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: var(--content-max-width);
    margin: 0 auto;
    text-align: center;
}

.mission h4,
.leadership h4,
.approach h4 {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: var(--letter-spacing-wide);
}

.mission p,
.approach p,
.leader-profile p {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
    line-height: var(--line-height-loose);
    letter-spacing: var(--letter-spacing-wider);
}

.leader-profile h5 {
    font-size: var(--font-size-h5);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: var(--letter-spacing-wide);
}

/* Section Headings */
.about h3,
.updates h3,
.connect h3 {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-xl);
    text-align: center;
    letter-spacing: var(--letter-spacing-normal);
}

.leader-profile {
    max-width: var(--content-max-width);
    margin: 0 auto;
    text-align: center;
}

/* Updates Section */
.updates {
    background: var(--color-background-alt);
    text-align: center;
}

.updates p {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
    max-width: 600px;
    margin: 0 auto;
    letter-spacing: var(--letter-spacing-wider);
}

.updates a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: text-decoration var(--transition-normal);
}

.updates a:hover {
    text-decoration: underline;
}

/* Connect Section */
.connect {
    background: var(--color-background);
    text-align: center;
}

.connect-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: nowrap;
    max-width: 500px;
    margin: 0 auto;
}

.connect-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-primary);
    text-decoration: none;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    min-width: 70px;
}

.connect-item:hover {
    background: var(--color-background-alt);
    transform: translateY(-2px);
}

.connect-item svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
    transition: color var(--transition-normal);
}

.connect-item:hover svg {
    color: var(--color-text);
}

.connect-item span {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-normal);
    letter-spacing: var(--letter-spacing-wider);
}

/* Footer */
footer {
    background: var(--color-background-subtle);
    color: var(--color-text);
    font-weight: var(--font-weight-normal);
    text-align: center;
    padding: var(--space-xl) 0;
    margin-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

/* Focus States */
a:focus,
button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        /* Adjust spacing for mobile */
        --space-2xl: 3rem;
        --space-3xl: 3rem;
        --space-4xl: 4rem;
        
        /* Adjust font sizes for mobile */
        --font-size-hero: 2.5rem;
        --font-size-h2: 1.5rem;
        --font-size-h3: 1rem;
        --font-size-h4: 1.125rem;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .hero-title {
        line-height: var(--line-height-normal);
    }
    
    .hero-subtitle {
        padding: 0 var(--space-sm);
    }
    
    nav {
        gap: var(--space-sm);
    }
    
    .services {
        background-size: 120% auto;
        background-position: center top;
    }
    
    .services::before {
        opacity: 0.8;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .service-item {
        padding: var(--space-lg);
    }
    
    .service-item p {
        font-size: var(--font-size-small);
    }
    
    .about-grid {
        gap: var(--space-lg);
        padding: 0 var(--space-sm);
    }
    
    .connect-links {
        gap: var(--space-sm);
        flex-wrap: wrap;
    }
    
    .connect-item {
        min-width: 60px;
        padding: var(--space-xs);
    }
    
    .connect-item svg {
        width: 28px;
        height: 28px;
    }
}