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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a3d62, #1e272e);
    color: #f5f6fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: #f39c12;
}

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

.nav-links a {
    color: #f5f6fa;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: background 0.3s, color 0.3s;
}

.nav-links a:hover {
    background: #f39c12;
    color: #1e272e;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    color: #f5f6fa;
    cursor: pointer;
}

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

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(255,255,255,0.05);
    border-radius: 20px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #f39c12;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #dfe6e9;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(45deg, #f39c12, #e67e22);
    color: #fff;
    border-radius: 30px;
    font-size: 1.2rem;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(243,156,18,0.4);
}

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

.feature-card {
    background: rgba(255,255,255,0.08);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(5px);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

.feature-card span {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: #f39c12;
}

.ranking-preview {
    background: rgba(255,255,255,0.08);
    border-radius: 15px;
    padding: 2rem;
}

.ranking-preview h2 {
    margin-bottom: 1rem;
    color: #f39c12;
}

.ranking-preview ol {
    padding-left: 1.5rem;
}

.ranking-preview li {
    padding: 0.3rem 0;
    font-size: 1.1rem;
}

footer {
    background: rgba(0, 0, 0, 0.6);
    text-align: center;
    padding: 1rem;
    margin-top: auto;
}

footer a {
    color: #f39c12;
    text-decoration: none;
}

/* Game */
.game-container {
    background: rgba(0,0,0,0.5);
    border-radius: 20px;
    padding: 1rem;
}

.game-header {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.game-header div {
    background: rgba(255,255,255,0.1);
    padding: 0.5rem 1rem;
    border-radius: 10px;
}

.item-btn, #reset-btn, #save-score-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 1rem;
}

.item-btn {
    background: #e67e22;
    color: #fff;
}

.item-btn:hover {
    background: #d35400;
}

#reset-btn {
    background: #e74c3c;
    color: #fff;
}

#reset-btn:hover {
    background: #c0392b;
}

#save-score-btn {
    background: #2ecc71;
    color: #fff;
}

#save-score-btn:hover {
    background: #27ae60;
}

#gameCanvas {
    width: 100%;
    height: auto;
    border-radius: 15px;
    background: #0a3d62;
    cursor: crosshair;
}

/* Admin */
.admin-container {
    background: rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.admin-form {
    margin: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.admin-form label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.admin-form input {
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid #555;
    background: #2d3436;
    color: #f5f6fa;
}

.admin-form button {
    padding: 0.7rem;
    border: none;
    border-radius: 10px;
    background: #f39c12;
    color: #1e272e;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.admin-form button:hover {
    background: #e67e22;
}

.btn-danger {
    background: #e74c3c !important;
    color: #fff !important;
}

.btn-danger:hover {
    background: #c0392b !important;
}

.error {
    color: #e74c3c;
}

.success {
    color: #2ecc71;
}

/* Ranking page */
.ranking-page {
    background: rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 2rem;
}

.ranking-page h2 {
    color: #f39c12;
    margin-bottom: 1rem;
}

.ranking-page ol {
    padding-left: 1.5rem;
    font-size: 1.2rem;
}

.ranking-page li {
    padding: 0.4rem 0;
}

/* Shop */
.shop-page {
    background: rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 2rem;
}

.shop-page h2 {
    color: #f39c12;
    margin-bottom: 1.5rem;
}

.shop-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.shop-card {
    background: rgba(255,255,255,0.1);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s;
}

.shop-card:hover {
    transform: scale(1.03);
}

.shop-card h3 {
    margin-bottom: 0.5rem;
}

.shop-card p {
    margin-bottom: 0.5rem;
    color: #b2bec3;
}

.btn-buy {
    padding: 0.7rem 2rem;
    border: none;
    border-radius: 25px;
    background: linear-gradient(45deg, #f39c12, #e67e22);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-buy:hover {
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        background: rgba(0,0,0,0.9);
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        padding: 1rem;
    }

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

    .hamburger {
        display: block;
    }

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

    .features {
        grid-template-columns: 1fr;
    }

    .game-header {
        flex-direction: column;
        align-items: flex-start;
    }
}