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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--tg-theme-bg-color, linear-gradient(135deg, #667eea 0%, #764ba2 100%));
    color: var(--tg-theme-text-color, #333);
    min-height: 100vh;
    overflow: hidden;
    margin: 0;
    padding: 0;
    -webkit-user-select: none;
    user-select: none;
}

.container {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Анимированный куб */
.cube-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    perspective: 1000px;
    z-index: 1;
}

.cube {
    width: 150px;
    height: 150px;
    position: relative;
    transform-style: preserve-3d;
    animation: rotateCube 20s infinite linear;
}

.face {
    position: absolute;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.front { transform: rotateY(0deg) translateZ(75px); }
.back { transform: rotateY(180deg) translateZ(75px); }
.right { transform: rotateY(90deg) translateZ(75px); }
.left { transform: rotateY(-90deg) translateZ(75px); }
.top { transform: rotateX(90deg) translateZ(75px); }
.bottom { transform: rotateX(-90deg) translateZ(75px); }

@keyframes rotateCube {
    0% { transform: rotateX(0deg) rotateY(0deg); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

/* Мобильное меню */
.mobile-menu {
    position: relative;
    z-index: 10;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px 20px;
    width: 90%;
    max-width: 350px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.menu-header {
    text-align: center;
    margin-bottom: 30px;
}

.menu-header h1 {
    color: #333;
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.menu-list {
    list-style: none;
}

.menu-item {
    margin-bottom: 15px;
    transform: translateY(20px);
    opacity: 0;
    animation: slideIn 0.6s ease forwards;
}

.menu-item:nth-child(1) { animation-delay: 0.1s; }
.menu-item:nth-child(2) { animation-delay: 0.2s; }
.menu-item:nth-child(3) { animation-delay: 0.3s; }
.menu-item:nth-child(4) { animation-delay: 0.4s; }

.menu-link {
    display: flex;
    align-items: center;
    padding: 20px;
    text-decoration: none;
    color: #333;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.menu-link:hover,
.menu-link:active {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.menu-icon {
    font-size: 24px;
    margin-right: 15px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 12px;
    color: white;
}

.menu-text {
    flex: 1;
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.3px;
}

.menu-arrow {
    font-size: 18px;
    color: #999;
    transition: transform 0.3s ease;
}

.menu-link:hover .menu-arrow {
    transform: translateX(5px);
}

@keyframes slideIn {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Мобильная оптимизация */
@media (max-width: 480px) {
    .mobile-menu {
        width: 95%;
        padding: 25px 15px;
    }
    
    .menu-header h1 {
        font-size: 24px;
    }
    
    .menu-link {
        padding: 18px 15px;
    }
    
    .menu-text {
        font-size: 16px;
    }
    
    .cube {
        width: 120px;
        height: 120px;
    }
    
    .face {
        width: 120px;
        height: 120px;
    }
    
    .front { transform: rotateY(0deg) translateZ(60px); }
    .back { transform: rotateY(180deg) translateZ(60px); }
    .right { transform: rotateY(90deg) translateZ(60px); }
    .left { transform: rotateY(-90deg) translateZ(60px); }
    .top { transform: rotateX(90deg) translateZ(60px); }
    .bottom { transform: rotateX(-90deg) translateZ(60px); }
}

/* Дополнительные эффекты для улучшения UX */
@media (hover: none) and (pointer: coarse) {
    .menu-link:active {
        background: rgba(255, 255, 255, 1);
        transform: scale(0.98);
    }
}

/* Анимация появления меню */
.mobile-menu {
    animation: menuAppear 0.8s ease;
}

@keyframes menuAppear {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Модальное окно авторизации */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transform: scale(0.8) translateY(50px);
    transition: all 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-header h2 {
    color: #333;
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
}

.auth-form {
    display: flex;
    flex-direction: column;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.input-group input {
    width: 100%;
    padding: 15px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.login-btn, .cancel-btn {
    flex: 1;
    padding: 15px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.cancel-btn {
    background: rgba(0, 0, 0, 0.1);
    color: #666;
}

.cancel-btn:hover {
    background: rgba(0, 0, 0, 0.15);
    color: #333;
}

/* Мобильная адаптация модального окна */
@media (max-width: 480px) {
    .modal-content {
        width: 95%;
        padding: 25px 20px;
    }
    
    .modal-header h2 {
        font-size: 20px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .login-btn, .cancel-btn {
        width: 100%;
    }
}

/* Telegram Mini App оптимизация */
:root {
    --tg-viewport-height: 100vh;
    --tg-viewport-stable-height: 100vh;
}

/* Адаптация под Telegram тему */
.mobile-menu {
    background: var(--tg-theme-secondary-bg-color, rgba(255, 255, 255, 0.95));
    color: var(--tg-theme-text-color, #333);
    border: 1px solid var(--tg-theme-section-separator-color, rgba(255, 255, 255, 0.2));
}

.menu-header h1 {
    color: var(--tg-theme-text-color, #333);
}

.menu-link {
    background: var(--tg-theme-bg-color, rgba(255, 255, 255, 0.7));
    color: var(--tg-theme-text-color, #333);
    border: 1px solid var(--tg-theme-section-separator-color, rgba(0, 0, 0, 0.05));
}

.menu-link:hover,
.menu-link:active {
    background: var(--tg-theme-section-bg-color, rgba(255, 255, 255, 0.9));
}

.menu-icon {
    background: var(--tg-theme-button-color, linear-gradient(135deg, #667eea, #764ba2));
    color: var(--tg-theme-button-text-color, white);
}

.menu-arrow {
    color: var(--tg-theme-hint-color, #999);
}

/* Модальное окно для Telegram */
.modal-content {
    background: var(--tg-theme-bg-color, rgba(255, 255, 255, 0.95));
    color: var(--tg-theme-text-color, #333);
    border: 1px solid var(--tg-theme-section-separator-color, rgba(255, 255, 255, 0.3));
}

.modal-header h2 {
    color: var(--tg-theme-text-color, #333);
}

.close-btn {
    color: var(--tg-theme-hint-color, #999);
}

.close-btn:hover {
    background: var(--tg-theme-section-bg-color, rgba(0, 0, 0, 0.1));
    color: var(--tg-theme-text-color, #333);
}

.input-group label {
    color: var(--tg-theme-text-color, #333);
}

.input-group input {
    background: var(--tg-theme-section-bg-color, rgba(255, 255, 255, 0.8));
    border: 2px solid var(--tg-theme-section-separator-color, rgba(0, 0, 0, 0.1));
    color: var(--tg-theme-text-color, #333);
}

.input-group input:focus {
    border-color: var(--tg-theme-button-color, #667eea);
    background: var(--tg-theme-bg-color, rgba(255, 255, 255, 1));
}

.login-btn {
    background: var(--tg-theme-button-color, linear-gradient(135deg, #667eea, #764ba2));
    color: var(--tg-theme-button-text-color, white);
}

.cancel-btn {
    background: var(--tg-theme-section-bg-color, rgba(0, 0, 0, 0.1));
    color: var(--tg-theme-hint-color, #666);
}

.cancel-btn:hover {
    background: var(--tg-theme-section-separator-color, rgba(0, 0, 0, 0.15));
    color: var(--tg-theme-text-color, #333);
}

/* Убираем куб для Telegram (экономия ресурсов) */
@media (max-width: 480px) {
    .cube-container {
        display: none;
    }
}

/* Адаптация под высоту Telegram */
.container {
    height: var(--tg-viewport-stable-height, 100vh);
    min-height: var(--tg-viewport-height, 100vh);
}

/* Haptic feedback стили */
.menu-link.haptic-feedback {
    transform: scale(0.98);
    transition: transform 0.1s ease;
}

/* Безопасная зона для iOS в Telegram */
@supports (padding: max(0px)) {
    .mobile-menu {
        padding-bottom: max(30px, env(safe-area-inset-bottom));
    }
    
    .modal-content {
        margin-bottom: max(0px, env(safe-area-inset-bottom));
    }
}