/* Основные стили */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f6f8fa;
    margin: 0;
    color: #223142;
}

/* Стили для вкладок */
.tab.active, .tab:hover {
    background: #1ec3ff !important;
    color: #fff !important;
    font-weight: bold !important;
}

/* Стили для контента вкладок */
.tab-content {
    display: none;
    background: #fff;
    padding: 1.5rem;
    border-radius: 0 0 8px 8px;
    margin: 0 auto;
    max-width: 900px;
    box-shadow: 0 2px 8px rgba(34,49,66,0.07);
}

.tab-content.active {
    display: block;
}

/* Стили для аккордеона */
.accordion-btn {
    width: 100%;
    text-align: left;
    background: #e9eef3;
    border: none;
    outline: none;
    padding: 0.8rem 1rem;
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: 5px;
    margin-bottom: 0.3rem;
    transition: background 0.2s, color 0.2s;
}

.accordion-btn.active, .accordion-btn:hover {
    background: #1ec3ff;
    color: #fff;
}

.accordion-content {
    display: none;
    padding: 0.7rem 1.5rem;
    background: #f6f8fa;
    border-radius: 0 0 5px 5px;
    margin-bottom: 0.5rem;
}

.accordion-content.active {
    display: block;
}

/* Стили для форм */
.calc-form {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(34,49,66,0.06);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.calc-form label {
    display: block;
    margin-bottom: 0.7rem;
    color: #223142;
}

.calc-form input, .calc-form select {
    width: 100%;
    border: 1px solid #c2c9d6;
    border-radius: 4px;
    font-size: 1rem;
    padding: 0.3rem 0.4rem;
    margin-top: 0.2rem;
    background: #f6f8fa;
    color: #223142;
}

.calc-btn {
    background: #1ec3ff;
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 0.7rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 1rem;
}

.calc-btn:hover {
    background: #009fd6;
}

/* Стили для таблицы результатов */
.results-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.results-table th {
    background: #223142;
    color: #fff;
    padding: 8px;
    border: 1px solid #ccc;
}

.results-table td {
    padding: 6px 8px;
    border: 1px solid #ccc;
    color: #223142;
}

.results-table tr:nth-child(even) td {
    background: #f6f8fa;
}