:root {
    --primary-blue: #003366;
    --accent-gold: #F5A623;
    --accent-orange: #FF8C00;
    --text-dark: #333333;
    --text-light: #FFFFFF;
    --bg-light: #F4F7F9;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang TC', 'Microsoft JhengHei', sans-serif;
}

body {
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

/* Navigation */
nav {
    background-color: var(--primary-blue);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo {
    color: var(--text-light);
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--text-light);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #001f3f 100%);
    color: var(--text-light);
    padding: 100px 5%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    animation: fadeInDown 1s ease;
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-gold);
    color: var(--primary-blue);
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.cta-button:hover {
    background-color: var(--accent-orange);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Sections */
section {
    padding: 80px 5%;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.section-title .underline {
    width: 60px;
    height: 4px;
    background: var(--accent-gold);
    margin: 0 auto;
}

/* Cards / Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
}

.card-img {
    aspect-ratio: 16 / 9;
    width: 100%;
    background-size: cover;
    background-position: center;
}

.card-content {
    padding: 20px;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--primary-blue);
}

/* Footer */
footer {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 80px 5% 20px;
    text-align: center;
}

.footer-content {
    margin-bottom: 50px;
}

.footer-content p {
    margin: 5px 0;
}

.copyright {
    font-size: 0.9rem;
    opacity: 0.7;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
}

/* Calendar Page Styles */
.calendar-wrapper {
    max-width: 1200px;
    margin: 50px auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    padding: 20px;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: var(--primary-blue);
    color: white;
    border-radius: 8px 8px 0 0;
}

.calendar-nav-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.calendar-nav-btn:hover {
    background: rgba(255,255,255,0.2);
}

.calendar-grid-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: #eee;
    padding: 10px 0;
    text-align: center;
    font-weight: bold;
    color: var(--text-dark);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-left: 1px solid #ddd;
    border-top: 1px solid #ddd;
}

.calendar-day {
    min-height: 120px;
    border-right: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
    padding: 5px;
    position: relative;
    background: white;
    transition: var(--transition);
    cursor: pointer;
}

.calendar-day:hover {
    background-color: #f9f9f9;
}

.calendar-day.empty {
    background-color: #fafafa;
    cursor: default;
}

.calendar-day.today {
    background-color: rgba(245, 166, 35, 0.1);
    border: 2px solid var(--accent-gold);
}

.day-number {
    font-weight: bold;
    margin-bottom: 5px;
    text-align: right;
    color: #666;
}

.event-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 3px;
}

.event-dot.meeting { background-color: var(--primary-blue); }
.event-dot.ceremony { background-color: var(--accent-gold); }
.event-dot.notice { background-color: var(--accent-orange); }

.event-text {
    font-size: 0.8rem;
    padding: 2px 4px;
    border-radius: 3px;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: white;
}

.event-text.meeting { background-color: var(--primary-blue); }
.event-text.ceremony { background-color: var(--accent-gold); color: var(--text-dark); }
.event-text.notice { background-color: var(--accent-orange); }

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: fadeInDown 0.3s ease;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #aaa;
}

.close-modal:hover { color: black; }

.event-detail {
    border-left: 4px solid #ddd;
    padding-left: 10px;
    margin-bottom: 15px;
}

.event-detail.meeting { border-color: var(--primary-blue); }
.event-detail.ceremony { border-color: var(--accent-gold); }
.event-detail.notice { border-color: var(--accent-orange); }

.btn-link {
    display: inline-block;
    margin-top: 5px;
    font-size: 0.9rem;
    color: var(--primary-blue);
    text-decoration: underline;
}

/* Responsive & Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    
    .hamburger {
        display: block;
        z-index: 1001;
        padding: 5px;
        border: 1px solid rgba(255,255,255,0.3);
        border-radius: 4px;
        cursor: pointer;
    }

    .bar {
        display: block;
        width: 25px;
        height: 3px;
        margin: 5px auto;
        transition: all 0.3s ease-in-out;
        background-color: var(--text-light);
    }

    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 60px; 
        flex-direction: column;
        background-color: var(--primary-blue);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
        padding: 20px 0;
        gap: 0;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 15px 0;
    }

    /* Calendar Mobile Adjustments */
    .calendar-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .calendar-nav-btn {
        width: 100%;
        margin: 5px 0;
    }

    .calendar-day { min-height: 80px; }
    .event-text { display: none; } /* Hide text on mobile, dots only */
}