@charset "UTF-8";
/* =============================================
   CSS Variables (Custom Properties)
   ============================================= */
:root {
    /* Colors */
    --color-primary: #22313f;
    --color-secondary: #3498db;
    --color-accent: #e74c3c;
    --color-background: #222;
    --color-text: #ffffff;
    --color-text-light: #ffffff;
    --color-text-title: #82baee;
    --color-border: #333333;
    --color-card-background: #2a2a2a;

    /* Typography */
    --font-primary: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 0.875rem;
    --font-size-large: 1.25rem;
    --font-size-xl: 1.5rem;
    --line-height: 1.5;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 4px;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-background);
    /* Make layout use full viewport height so footer can sit at the bottom */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* =============================================
   Typography
   ============================================= */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

p {
    margin-bottom: var(--spacing-md);
}

/* =============================================
   Layout Components
   ============================================= */
/* Header */
.topbar {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) 0; /* smaller vertical padding, logo controls height */
    box-shadow: var(--shadow);
    position: relative;
}

.topbar-inner {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between; /* logo on left, nav on right */
    min-height: 64px; /* ensures comfortable height for the nav and logo overlap */
}

/* Navigation */
.nav {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

.nav-item {
    position: relative;
}

.nav a {
    color: white;
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    display: block;
}

.nav > .nav-item > a {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.nav a:hover {
    background-color: var(--color-secondary);
}

/* Dropdown Styles */
.dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--color-primary);
    min-width: 200px;
    border-radius: var(--border-radius);
    padding: var(--spacing-xs);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown li {
    list-style: none;
}

.dropdown a {
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    display: block;
}

.dropdown a:hover {
    background-color: var(--color-secondary);
}

/* Logo */
.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 72px; /* visible and reasonably large inside the topbar */
    width: auto;
    margin-left: calc(var(--spacing-sm));
    display: block;
}

/* Main Content */
.main-content {
    max-width: var(--container-max-width);
    margin: var(--spacing-xl) auto 0 auto; /* remove bottom margin so footer sits at bottom */
    padding: 0 var(--spacing-md);
    flex: 1 0 auto; /* allow main to grow and push footer down */
}

/* Cards Section */
.cards {
    display: grid;
    /* Two columns on wider screens, each column will never be smaller than 250px */
    grid-template-columns: repeat(2, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card {
    background-color: var(--color-card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.card h2 {
    color: var(--color-text-title);
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-md);
}

.card p {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
}

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

/* Menu Toggle Button */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-right: var(--spacing-md);
}

.menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: white;
    transition: all 0.3s ease;
}

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 768px) {
    /* Adjust base font size for better readability */
    html {
        font-size: 18px;
    }

    /* Header adjustments */
    .topbar {
        padding: var(--spacing-sm) 0;
    }

    .topbar-inner {
        flex-direction: row;
        justify-content: space-between;
        padding: 0 var(--spacing-md);
        position: relative;
    }

    /* Show menu toggle button */
    .menu-toggle {
        display: flex;
        z-index: 1001;
    }

    /* Animate hamburger to X when menu is open */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Mobile Navigation */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-primary);
        flex-direction: column;
        padding: calc(64px + var(--spacing-lg)) var(--spacing-md) var(--spacing-md);
        transition: right 0.3s ease;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.2);
        z-index: 1000;
    }

    .nav.active {
        right: 0;
    }

    .nav-item {
        width: 100%;
    }

    /* Larger touch targets */
    .nav a {
        padding: var(--spacing-md);
        font-size: 1.1rem;
    }

    /* Dropdown adjustments */
    .dropdown {
        position: static;
        width: 100%;
        opacity: 0;
        max-height: 0;
        overflow: hidden;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: rgba(255, 255, 255, 0.05);
        transition: all 0.3s ease;
        margin-left: var(--spacing-md);
        border-left: 2px solid var(--color-secondary);
    }

    .nav-item.active .dropdown {
        opacity: 1;
        max-height: 1000px;
        margin-top: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }

    /* Card adjustments */
    .cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin: var(--spacing-md) 0;
    }

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

    /* Content spacing */
    .main-content {
        margin-top: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }

    /* Footer adjustments */
    .site-footer {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    /* Logo size adjustment */
    .logo {
        height: 56px;
    }
}