/* Общие стили для всех страниц */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Кнопки */
.btn {
    padding: 15px 30px;
    font-size: 1.2em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.6);
}

.btn-success {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.btn-home {
    position: fixed;
    top: 20px;
    left: 20px;
    background: white;
    color: #333;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    font-weight: 600;
    z-index: 1000;
    transition: all 0.3s;
}

.btn-home:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Заголовки */
h1 {
    font-size: 2.5em;
    color: #2c3e50;
    margin-bottom: 20px;
    text-align: center;
}

h2 {
    font-size: 1.8em;
    color: #34495e;
    margin-bottom: 15px;
}

/* Карточки */
.card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

/* Инструкции */
.instructions {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.instructions h3 {
    color: #856404;
    margin-bottom: 10px;
}

.instructions p {
    color: #856404;
    line-height: 1.6;
}

/* Адаптивность */
@media (max-width: 768px) {
    .btn {
        padding: 12px 24px;
        font-size: 1em;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .container {
        padding: 15px;
    }
    
    .card {
        padding: 20px;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Утилиты */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none;
}