* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background: #f5f5f5;
}

.container {
    display: flex;
    min-height: 100vh;
}

/* Боковое меню */
.sidebar {
    width: 260px;
    background: white;
    box-shadow: 2px 0 5px rgba(0,0,0,0.05);
    padding: 20px 0;
}

.sidebar h3 {
    padding: 0 20px;
    margin-bottom: 20px;
    color: #333;
    font-size: 20px;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    padding: 12px 20px;
    color: #555;
    cursor: pointer;
    transition: background 0.2s;
    border-left: 3px solid transparent;
}

.sidebar li:hover {
    background: #f0f7ff;
    border-left-color: #007bff;
    color: #007bff;
}

/* Основной контент */
.content {
    flex: 1;
    padding: 30px 40px;
    background: #f5f5f5;
}

.page-title {
    font-size: 28px;
    margin-bottom: 10px;
    color: #222;
}

.page-subtitle {
    color: #666;
    margin-bottom: 25px;
    font-size: 16px;
}

hr {
    border: none;
    border-top: 1px solid #ddd;
    margin: 20px 0;
}

/* Карточки */
.card {
    background: white;
    border-radius: 12px;
    padding: 20px 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.card h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}

.info-row {
    display: flex;
    margin-bottom: 12px;
    font-size: 15px;
}

.info-label {
    width: 200px;
    color: #666;
}

.info-value {
    color: #222;
    font-weight: 500;
}

.input-field {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    margin: 5px 0 10px;
}

.input-field:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0,123,255,0.1);
}

.help-text {
    color: #888;
    font-size: 13px;
    margin-bottom: 10px;
}

/* Кнопки */
.btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: #0056b3;
}

/* Блок "Как это работает" */
.info-block {
    background: #f8f9fa;
    border-left: 4px solid #007bff;
    padding: 20px;
    border-radius: 8px;
    margin-top: 30px;
}

.info-block h4 {
    margin-bottom: 12px;
    color: #333;
}

.info-block p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 8px;
    font-size: 14px;
}