/* --- Общие стили --- */
* {
    box-sizing: border-box;
}

body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Arial', sans-serif;
    background-color: #000;
    color: #fff;
    overflow-x: hidden;
}

.screen {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
}

.hidden {
    display: none !important;
}

.btn {
    padding: 12px 24px;
    font-size: 1.1em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

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

/* --- Главная страница выбора режима --- */
.main-mode-screen {
    background-image: url('../assets/background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    text-align: center;
    justify-content: flex-start;
    padding-top: 10vh;
}

.main-mode-screen::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1;
}

.main-mode-screen > * {
    position: relative;
    z-index: 2;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    width: 90%;
    max-width: 800px;
    margin-top: 20px;
}

.mode-button {
    background-color: rgba(30, 30, 40, 0.85);
    color: white;
    border: 2px solid #ddd;
    border-radius: 12px;
    padding: 25px 15px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.mode-button:hover {
    background-color: rgba(60, 60, 90, 0.95);
    border-color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.4);
}

.mode-button .mode-name {
    font-size: 1.4rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.mode-button .mode-desc {
    font-size: 1rem;
    color: #bbb;
}

.info-links {
    margin-top: 40px;
    display: flex;
    gap: 20px;
}

.info-links a {
    color: #aaa;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s;
}

.info-links a:hover {
    color: #fff;
    text-decoration: underline;
}
.back-button-top {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: #555;
    color: white;
    font-size: 1rem;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    z-index: 10;
}

.back-button-top:hover {
    background-color: #777;
}

@media (max-width: 768px) {
    .back-button-top {
        top: 10px;
        left: 10px;
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

/* --- Страницы информации --- */
.info-screen {
    background-color: #111;
    padding: 40px 20px;
    text-align: center;
}

.info-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    font-size: 1.2rem;
    line-height: 1.6;
}

.info-content h1, .info-content h2 {
    text-align: center;
}

.back-link {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: #555;
    color: white;
    font-size: 1rem;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
}

.back-link:hover {
    background-color: #777;
}

/* --- Адаптация под мобильные --- */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .modes-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        width: 95%;
    }

    .mode-button {
        padding: 20px 10px;
        font-size: 1.1rem;
    }

    .mode-button .mode-name {
        font-size: 1.2rem;
    }

    .info-links {
        flex-direction: column;
        gap: 10px;
        margin-top: 30px;
    }

    .info-links a {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.7rem;
    }

    .mode-button .mode-name {
        font-size: 1.1rem;
    }

    .mode-button .mode-desc {
        font-size: 0.9rem;
    }
}


/* --- Модальное окно для предложения вопроса --- */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: #222;
    margin: auto;
    padding: 30px;
    border: 2px solid #555;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    right: 20px;
    top: 15px;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #fff;
}

.modal-content h2 {
    margin-top: 0;
    text-align: center;
    color: #ff9800;
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #555;
    border-radius: 8px;
    background-color: #333;
    color: #fff;
    font-size: 1rem;
    font-family: Arial, sans-serif;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff9800;
    box-shadow: 0 0 5px rgba(255, 152, 0, 0.5);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.char-count {
    text-align: right;
    font-size: 0.9rem;
    color: #999;
    margin-top: 5px;
}

.submit-btn {
    background-color: #4caf50;
    color: white;
    padding: 15px 30px;
    font-size: 1.2rem;
    width: 100%;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #45a049;
}

.submit-btn:disabled {
    background-color: #666;
    cursor: not-allowed;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
}

.form-message.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    border: 1px solid #4caf50;
}

.form-message.error {
    background-color: rgba(244, 67, 54, 0.2);
    color: #f44336;
    border: 1px solid #f44336;
}

/* Адаптация под мобильные */
@media (max-width: 768px) {
    .modal-content {
        padding: 20px;
        margin: 20px;
    }
    
    .modal-content h2 {
        font-size: 1.5rem;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 10px;
        font-size: 0.9rem;
    }
    
    .submit-btn {
        padding: 12px 20px;
        font-size: 1.1rem;
    }
}