/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #000;
    background: linear-gradient(180deg, #eff6ff, #ffffff);
    overflow-x: hidden;
}

/* Sticky Navigation */
.sticky-nav {
    position: sticky;
    top: 0;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    color: #fff;
    padding: 1rem;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #dbeafe;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Layout Container */
.layout-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 2rem;
    padding: 2rem 1rem;
    min-height: 100vh;
}

/* Main Content */
main {
    grid-column: 1;
}

header {
    text-align: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    color: #fff;
    border-radius: 12px;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    font-style: italic;
    opacity: 0.9;
}

/* Card Styles */
.card {
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.card:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: #000;
}

h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #000;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #0000EE;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.cta {
    background: linear-gradient(135deg, #14b8a6, #2dd4bf);
    text-align: center;
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: #1e3a8a;
    color: #fff;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
    background: #3b82f6;
    transform: translateY(-2px);
}

/* Sidebar */
.sidebar {
    grid-column: 2;
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0,0.1);
    position: sticky;
    top: 80px; /* Below sticky nav */
    align-self: start;
    z-index: 900;
}

.sidebar h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.sidebar ul {
    list-style: none;
}

.sidebar ul {
    color: #0000EE;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.sidebar a:hover {
    color: #3b82f6;
}

.progress-container {
    margin-top: 1rem;
    background: #e2e8f0;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    width: 0;
    height: 100%;
    background: #3b82f6;
    transition: width 0.3s ease;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #1e293b, #475569);
    color: #fff;
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
}

footer a {
    color: #fff;
    text-decoration: none;
    margin: 0 0.5rem;
}

footer a:hover {
    text-decoration: underline;
}

/* Scroll Animation Trigger */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .layout-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        grid-column: 1;
        position: static; /* Disable sticky on mobile */
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #1e3a8a;
        padding: 1rem;
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    header h1 {
        font-size: 1.6rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    h3 {
        font-size: 1.2rem;
    }
}