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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a1f3e, #1a3a6a);
    color: #e0f0ff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: #7fc8ff;
    text-decoration: none;
}

a:hover {
    color: #b0e0ff;
}

header {
    background: rgba(10, 30, 60, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ffd700;
}

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

.nav-links a {
    color: #e0f0ff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    transition: background 0.3s;
}

.nav-links a:hover {
    background: rgba(255,255,255,0.1);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: #e0f0ff;
    font-size: 1.5rem;
    cursor: pointer;
}

main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

.hero {
    text-align: center;
    padding: 4rem 0;
    background: radial-gradient(circle, rgba(30,80,150,0.5) 0%, transparent 70%);
    border-radius: 20px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    color: #ffd700;
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(255,215,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #b0d0ff;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #0a1f3e;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(255,215,0,0.4);
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(255,215,0,0.6);
}

.game-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.info-card {
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    padding: 1.5rem;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.1);
    transition: transform 0.3s;
}

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

.stats-bar {
    display: flex;
    justify-content: space-around;
    background: rgba(0,0,0,0.3);
    border-radius: 15px;
    padding: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.stat {
    font-size: 1.1rem;
}

.stat strong {
    color: #ffd700;
}

.fish-gallery, .levels-preview {
    margin-bottom: 2rem;
}

.fish-grid, .level-list, .achievement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.fish-card, .level-card, .achievement-card {
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.1);
    transition: transform 0.3s;
}

.fish-card:hover, .level-card:hover, .achievement-card:hover {
    transform: scale(1.02);
}

.game-container {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.game-canvas-wrapper {
    flex: 1;
    min-width: 300px;
}

#gameCanvas {
    width: 100%;
    height: auto;
    background: radial-gradient(ellipse at center, #1a4a7a, #0a1f3e);
    border-radius: 20px;
    border: 2px solid rgba(255,255,255,0.2);
    box-shadow: 0 0 30px rgba(0,100,200,0.3);
}

.game-controls {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.game-controls button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s;
}

#fireBtn {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
}

#upgradeBtn {
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #0a1f3e;
}

#specialBtn {
    background: linear-gradient(135deg, #a29bfe, #6c5ce7);
    color: white;
}

.game-controls button:hover {
    transform: scale(1.05);
}

.game-sidebar {
    width: 250px;
    background: rgba(0,0,0,0.3);
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid rgba(255,255,255,0.1);
}

.player-stats, .fish-stats {
    margin-bottom: 1.5rem;
}

.player-stats h3, .fish-stats h3 {
    color: #ffd700;
    margin-bottom: 0.5rem;
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    overflow: hidden;
}

.leaderboard-table th, .leaderboard-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.leaderboard-table th {
    background: rgba(255,215,0,0.2);
    color: #ffd700;
}

.achievement-card.locked {
    opacity: 0.6;
    filter: grayscale(0.5);
}

.status {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.login-form {
    max-width: 400px;
    margin: 4rem auto;
    background: rgba(255,255,255,0.05);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.login-form h1 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #ffd700;
}

.login-form input {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    background: rgba(0,0,0,0.3);
    color: #e0f0ff;
}

.login-form button {
    width: 100%;
    padding: 0.8rem;
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    border: none;
    border-radius: 30px;
    font-weight: bold;
    cursor: pointer;
}

.admin-section {
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255,255,255,0.1);
}

#dataEditor {
    background: rgba(0,0,0,0.5);
    color: #e0f0ff;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    padding: 1rem;
}

#saveDataBtn {
    margin-top: 1rem;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, #00b894, #00cec9);
    border: none;
    border-radius: 30px;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.error {
    color: #ff6b6b;
    margin-bottom: 1rem;
}

.success {
    color: #00b894;
    margin-bottom: 1rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: auto;
}

footer a {
    color: #7fc8ff;
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 30, 60, 0.95);
        padding: 1rem;
    }

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

    .hamburger {
        display: block;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .game-container {
        flex-direction: column;
    }

    .game-sidebar {
        width: 100%;
    }

    .game-controls {
        justify-content: center;
    }
}