* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.game-logo {
    text-align: center;
    margin-bottom: 30px;
}

.game-logo h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #00b4db, #0083b0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(0, 180, 219, 0.3);
}

.game-logo p {
    color: #aaa;
    font-size: 1.1em;
}

.tabs {
    display: flex;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 5px;
}

.tab-button {
    flex: 1;
    padding: 15px;
    border: none;
    background: none;
    color: #aaa;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 8px;
    font-weight: 600;
}

.tab-button.active {
    background: linear-gradient(45deg, #00b4db, #0083b0);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 180, 219, 0.4);
}

.form {
    display: none;
    animation: fadeIn 0.5s;
}

.form.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #ddd;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 18px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    color: white;
    font-size: 1.1em;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #00b4db;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 180, 219, 0.3);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.btn {
    width: 100%;
    padding: 20px;
    border: none;
    border-radius: 12px;
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(45deg, #00b4db, #0083b0);
    color: white;
    box-shadow: 0 6px 20px rgba(0, 180, 219, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 180, 219, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-guest {
    background: linear-gradient(45deg, #ff416c, #ff4b2b);
    color: white;
    font-size: 1.3em;
    padding: 25px;
    margin: 20px 0;
    box-shadow: 0 8px 25px rgba(255, 65, 108, 0.4);
}

.btn-guest:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(255, 65, 108, 0.6);
}

.guest-section {
    text-align: center;
    margin: 30px 0;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 2px dashed rgba(255, 65, 108, 0.3);
}

.guest-warning {
    color: #ffcc00;
    font-size: 0.9em;
    margin-top: 10px;
    opacity: 0.8;
}

.error-message {
    background: rgba(255, 65, 108, 0.2);
    border: 2px solid #ff416c;
    color: #ffcccb;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.features {
    margin-top: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
}

.features h3 {
    margin-bottom: 15px;
    color: #00b4db;
    font-size: 1.2em;
}

.features ul {
    list-style: none;
    padding-left: 0;
}

.features li {
    padding: 8px 0;
    color: #ccc;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.features li:last-child {
    border-bottom: none;
}

/* Анимации */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Медиа-запросы для мобильных */
@media (max-width: 768px) {
    .login-container {
        padding: 20px;
        margin: 10px;
    }
    
    .game-logo h1 {
        font-size: 2em;
    }
    
    .btn {
        padding: 18px;
        font-size: 1.1em;
    }
    
    .btn-guest {
        padding: 22px;
        font-size: 1.2em;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .login-container {
        padding: 15px;
    }
    
    .tab-button {
        padding: 12px;
        font-size: 1em;
    }
    
    .form-group input {
        padding: 16px;
    }
}