/* --- Global Styles & Light Blue / Red Aesthetic --- */
:root {
    --primary-color: #1d6fa5; /* Clean, friendly light/medium blue */
    --accent-color: #d63535;  /* Vibrant red accent */
    --bg-color: #f7f9fa;      /* Crisp, clean off-white background */
    --text-color: #2b2b2b;    /* Dark charcoal for readable text */
    --card-bg: #ffffff;
    --border-color: #e1e8ed;
    --max-width: 1100px;
}

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

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

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

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

/* --- Logo Sizing (25% larger than 60px) --- */
.logo-link img {
    height: 75px;
    width: auto;
    display: block;
    object-fit: contain;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-color);
}

/* --- Layout & Containers --- */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 2rem;
}

section {
    margin-bottom: 3rem;
}

.calendar-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(29, 111, 165, 0.06);
    padding: 2.5rem;
    margin-bottom: 2.5rem;
}

.calendar-card h2 {
    margin-bottom: 0.5rem;
}

.calendar-card p {
    margin-bottom: 1.25rem;
    color: #555;
}

.calendar-card iframe {
    display: block;
    width: 100%;
    height: 600px;
    border: 0;
    border-radius: 8px;
    background: #fff;
}

h1, h2, h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.9;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    margin-left: 0.5rem;
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* --- Footer --- */
footer {
    background-color: #222;
    color: #aaa;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 0.5rem;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .logo-link img {
        height: 62px;
    }

    .nav-links {
        gap: 0.75rem 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links a {
        font-size: 0.9rem;
    }
}

/* --- Small-screen Layout --- */
@media (max-width: 600px) {
    nav {
        padding: 0.75rem 1rem;
    }

    .logo-link img {
        height: 60px;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.5rem 0.9rem;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    main {
        padding: 2rem 1rem;
    }

    section {
        margin-bottom: 2rem;
    }

    h1 {
        font-size: 2rem !important;
    }

    h2 {
        font-size: 1.5rem;
    }

    [style*="padding: 5rem 2rem"] {
        padding: 3rem 1.25rem !important;
    }

    [style*="font-size: 2.75rem"] {
        font-size: 2rem !important;
    }

    [style*="font-size: 1.2rem"] {
        font-size: 1rem !important;
    }

    [style*="padding: 2.5rem"],
    [style*="padding: 2rem"] {
        padding: 1.5rem !important;
    }

    .btn {
        padding: 0.7rem 1rem;
        font-size: 0.95rem;
        width: 100%;
        text-align: center;
    }

    .btn-secondary {
        margin: 0.75rem 0 0 !important;
    }

    table {
        min-width: 620px;
    }

    iframe {
        height: 450px !important;
    }

    footer {
        padding: 1.5rem 1rem;
    }

    .calendar-card {
        padding: 1.5rem 1rem;
    }

    .calendar-card iframe {
        height: 450px;
    }
}