:root {
    --sand-bg: #f9f5f0;
    --sea-teal: #007a78;
    --sea-light: #e0f2f1;
    --coral-peach: #e07a5f;
    --charcoal: #2f3e46;
    --text-muted: #62757f;
    --font-hand: 'Patrick Hand', cursive;
    --font-body: 'Nunito', sans-serif;
}

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

body {
    background-color: var(--sand-bg);
    color: var(--charcoal);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Header */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 6vw;
    background-color: #ffffff;
    border-bottom: 3px solid var(--sea-teal);
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-family: var(--font-hand);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--sea-teal);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.25s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--sea-teal);
    background-color: var(--sea-light);
}

.nav-toggle-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--sea-teal);
    cursor: pointer;
}

/* Main */
.ocean-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 6vw 80px;
}

/* Dashboard */
.reef-dashboard {
    background-color: #ffffff;
    border: 3px solid var(--sea-teal);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0, 122, 120, 0.05);
    margin-bottom: 50px;
}

.stats-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
    margin-bottom: 20px;
    border-bottom: 2px dashed var(--sea-light);
    padding-bottom: 15px;
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-box span {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.stat-box strong {
    font-family: var(--font-hand);
    font-size: 1.5rem;
    color: var(--sea-teal);
}

.canvas-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 1.8;
    background-color: #e5f6f6;
    border: 2px solid var(--sea-teal);
    border-radius: 8px;
    overflow: hidden;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.overlay-card {
    position: absolute;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.96);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 30px;
}

.overlay-card__icon {
    font-size: 3.5rem;
    margin-bottom: 10px;
}

.overlay-card h2 {
    font-family: var(--font-hand);
    font-size: 2.2rem;
    margin-bottom: 12px;
    color: var(--sea-teal);
}

.overlay-card p {
    color: var(--text-muted);
    max-width: 500px;
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 800;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-green {
    background-color: var(--sea-teal);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(0, 122, 120, 0.2);
}

.btn-green:hover {
    background-color: #005a58;
    box-shadow: 0 6px 16px rgba(0, 122, 120, 0.3);
}

.reef-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 15px;
}

/* Ecological Section content-div */
.content-div {
    padding: 60px 0;
    border-top: 2px solid var(--sea-light);
}

.div-title {
    font-family: var(--font-hand);
    font-size: 2rem;
    color: var(--sea-teal);
    margin-bottom: 8px;
}

.div-desc {
    color: var(--text-muted);
    margin-bottom: 35px;
    font-size: 0.95rem;
}

.eco-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.eco-card {
    background-color: #ffffff;
    border: 2px solid var(--sea-teal);
    padding: 25px;
    border-radius: 8px;
}

.eco-card h3 {
    font-family: var(--font-hand);
    font-size: 1.35rem;
    margin-bottom: 12px;
    color: var(--coral-peach);
}

.eco-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Leaderboard */
.table-wrap {
    overflow-x: auto;
    border: 2px solid var(--sea-teal);
    border-radius: 8px;
    margin-bottom: 15px;
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    text-align: left;
}

.ranking-table th, .ranking-table td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--sea-light);
    font-size: 0.9rem;
}

.ranking-table th {
    background-color: var(--sea-light);
    color: var(--sea-teal);
    font-family: var(--font-hand);
    font-size: 1.1rem;
}

.rank-first { color: var(--coral-peach); font-weight: bold; }
.rank-second { color: #555; font-weight: bold; }
.rank-third { color: var(--sea-teal); font-weight: bold; }
.pb-note { font-size: 0.85rem; color: var(--text-muted); }
.pb-note span { color: var(--sea-teal); font-weight: bold; }

/* Bulletins Section */
.bulletin-icon {
    font-size: 2.2rem;
    margin-bottom: 12px;
    display: block;
}

.bulletin-link {
    color: var(--sea-teal);
    font-weight: bold;
    font-size: 0.9rem;
    font-family: var(--font-hand);
}

.bulletin-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

/* FAQ Accordion */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    border: 2px solid var(--sea-teal);
    border-radius: 8px;
    background-color: #ffffff;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 16px 24px;
    text-align: left;
    font-family: var(--font-hand);
    color: var(--charcoal);
    font-size: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question:hover {
    color: var(--sea-teal);
}

.faq-answer {
    padding: 0 24px 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-more {
    text-align: center;
    margin-top: 25px;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    z-index: 10000;
    background-color: #ffffff;
    border: 2px solid var(--sea-teal);
    border-radius: 12px;
    padding: 20px;
    display: none;
    box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}

.cookie-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    flex-wrap: wrap;
    gap: 15px;
}

.cookie-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
    flex-grow: 1;
    max-width: 70%;
}

.cookie-icon {
    font-size: 2rem;
}

.cookie-actions {
    display: flex;
    gap: 10px;
}

.btn-cookie-decline {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--sea-light);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: #ffffff;
    border: 2px solid var(--sea-teal);
    color: var(--sea-teal);
    font-family: var(--font-hand);
    font-size: 1.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* Subpage Layout */
.page-container {
    background-color: #ffffff;
    border: 2px solid var(--sea-teal);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.02);
}

.back-btn {
    display: inline-flex;
    align-items: center;
    color: var(--sea-teal);
    font-weight: 800;
    font-size: 0.9rem;
    margin-bottom: 25px;
}

.page-container h1 {
    font-family: var(--font-hand);
    font-size: 2.2rem;
    color: var(--sea-teal);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--sea-light);
    padding-bottom: 15px;
}

.page-container h2 {
    font-family: var(--font-hand);
    font-size: 1.45rem;
    color: var(--coral-peach);
    margin: 25px 0 10px;
}

.page-container p {
    color: var(--text-muted);
    margin-bottom: 15px;
}

.page-container ul {
    margin-left: 20px;
    margin-bottom: 15px;
    color: var(--text-muted);
}

.page-container li {
    margin-bottom: 6px;
}

/* Footer */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 6vw;
    border-top: 1.5px solid var(--sea-teal);
    background-color: #ffffff;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a:hover {
    color: var(--sea-teal);
}

/* Responsive */
@media (max-width: 1024px) {
    .eco-grid {
        grid-template-columns: 1fr;
    }
    .stats-bar {
        grid-template-columns: repeat(3, 1fr);
    }
    .cookie-content p {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .top-nav {
        position: relative;
    }
    .nav-toggle-btn {
        display: block;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #ffffff;
        border-bottom: 2px solid var(--sea-teal);
        padding: 20px;
        gap: 15px;
        z-index: 100;
    }
    .nav-links.open {
        display: flex;
    }
    .footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}