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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a0000 0%, #000000 100%);
    color: #fff;
}

.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-box {
    background: rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 68, 68, 0.3);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #ff4444;
}

.login-box form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-box input {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.3);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
}

.login-box button {
    padding: 1rem;
    background: #ff4444;
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.login-box button:hover {
    background: #ff6666;
}

.error {
    color: #ff4444;
    text-align: center;
    margin-top: 1rem;
}

.admin-nav {
    background: rgba(0, 0, 0, 0.8);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #ff4444;
}

.logout-btn {
    padding: 0.5rem 1.5rem;
    background: transparent;
    border: 2px solid #ff4444;
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.logout-btn:hover {
    background: #ff4444;
}

.admin-content {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 68, 68, 0.3);
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover, .tab-btn.active {
    background: #ff4444;
    border-color: #ff4444;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-content h2 {
    margin-bottom: 2rem;
    color: #ff4444;
}

.admin-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 68, 68, 0.3);
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.admin-form input, .admin-form textarea {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.3);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    font-family: inherit;
}

.admin-form textarea {
    min-height: 100px;
    resize: vertical;
}

.admin-form button {
    padding: 1rem;
    background: #ff4444;
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.admin-form button:hover {
    background: #ff6666;
}

.items-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.item-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 68, 68, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-info {
    flex: 1;
}

.item-info h3 {
    margin-bottom: 0.5rem;
    color: #ff4444;
}

.item-info p {
    color: #aaa;
    margin-bottom: 0.3rem;
}

.item-actions {
    display: flex;
    gap: 0.5rem;
}

.edit-btn, .delete-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.edit-btn {
    background: #4444ff;
    color: #fff;
}

.edit-btn:hover {
    background: #6666ff;
}

.delete-btn {
    background: #ff4444;
    color: #fff;
}

.delete-btn:hover {
    background: #ff6666;
}

.achievement-type-selector {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.type-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 68, 68, 0.3);
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.type-btn:hover, .type-btn.active {
    background: #ff4444;
    border-color: #ff4444;
}

.item-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    margin-right: 1rem;
}

@media (max-width: 768px) {
    .admin-content {
        padding: 1rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .item-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .item-actions {
        margin-top: 1rem;
        width: 100%;
    }
    
    .edit-btn, .delete-btn {
        flex: 1;
    }
}