/* Color Palette & Variables */
:root {
    --bone-white: #FAF9F6;
    --navy: #1E3A5F;
    --coral: #FF6B4A;
    --text-dark: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bone-white);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    background-color: var(--bone-white);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
}

.nav-links a {
    text-decoration: none;
    color: var(--navy);
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--coral);
}

/* Buttons */
.btn-primary, .btn-nav {
    background-color: var(--coral);
    color: white !important;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    display: inline-block;
}

.btn-primary:hover, .btn-nav:hover {
    background-color: #e55a39;
    transform: translateY(-2px);
}

/* Typography & Layouts */
section, header {
    padding: 6rem 5%;
    text-align: center;
}

h1 {
    font-size: 4rem;
    color: var(--navy);
    margin-bottom: 1rem;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    color: var(--navy);
    margin-bottom: 2rem;
}

p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 2rem auto;
}

/* Background Utility Classes */
.bg-navy {
    background-color: var(--navy);
    color: var(--bone-white);
}

.bg-navy h2, .bg-navy p {
    color: var(--bone-white);
}

/* Grid for Features */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-top: 4px solid var(--coral);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    color: var(--navy);
    margin-bottom: 1rem;
}

/* Intern Roles List */
.intern-list {
    list-style: none;
    margin-bottom: 3rem;
}

.intern-list li {
    font-size: 1.2rem;
    margin: 0.5rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(250, 249, 246, 0.2);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
footer {
    background-color: #112238;
    color: white;
    padding: 3rem 5%;
    text-align: center;
}

.social-links a {
    color: var(--coral);
    text-decoration: none;
    margin: 0 1rem;
}

/* Elegant Fade-In Transitions */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}