/* ----- полная изоляция стилей внутри .tariff-commission ----- */
.tariff-commission,
.tariff-commission * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* корневой контейнер — все стили только внутри него */
.tariff-commission {
    --primary: #1a5fa8;
    --primary-light: #e8f0fe;
    --primary-gradient: linear-gradient(135deg, #1a5fa8, #4a90d9);
    --accent: #f59e0b;
    --accent-light: #fef3c7;
    --green: #10b981;
    --green-light: #d1fae5;
    --surface: #ffffff;
    --bg: #f0f4f9;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
    --radius: 5px;
    --radius-sm: 5px;
    --ipc-primary: #1a365d;

    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: #f0f4f9;
    padding: 2rem 1rem;
    border-radius: 0;
}

/* ---- Header (полностью изолирован) ---- */
.tariff-commission .tc-header {
    text-align: center;
    padding: 3rem 2rem 2.5rem;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}
.tariff-commission .tc-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 5px;
    background: var(--primary-gradient);
}
.tariff-commission .tc-header-icon {
    width: 64px; height: 64px;
    background: var(--primary-gradient);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.2rem;
    font-size: 1.6rem; color: #fff;
    box-shadow: 0 8px 24px rgba(26,95,168,0.25);
}
.tariff-commission .tc-header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 0.5rem;
}
.tariff-commission .tc-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ---- Section Card ---- */
.tariff-commission .section-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 2rem 2.2rem;
    margin-bottom: 2rem;
    transition: box-shadow 0.2s;
}
.tariff-commission .section-card:hover {
    box-shadow: var(--shadow-lg);
}

.tariff-commission .main-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
}
.tariff-commission .main-section-title i {
    color: var(--primary);
    font-size: 1.3rem;
}

/* ---- Accordion триггеры ---- */
.tariff-commission .tc-accordion-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.9rem 1.4rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    margin-bottom: 6px;
}
.tariff-commission .tc-accordion-trigger:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateX(4px);
}
.tariff-commission .tc-accordion-trigger i:last-child {
    font-size: 1.2rem;
    color: var(--primary);
    transition: transform 0.25s;
}
.tariff-commission .tc-accordion-trigger[aria-expanded="true"] i:last-child {
    transform: rotate(180deg);
}
.tariff-commission .tc-accordion-trigger[aria-expanded="true"] {
    background: var(--primary-light);
    border-color: var(--primary);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    margin-bottom: 0;
}

/* ---- Collapse панели ---- */
.tariff-commission .tc-collapse {
    display: none;
    overflow: hidden;
}
.tariff-commission .tc-collapse.show {
    display: block;
}
.tariff-commission .tc-collapse-inner {
    background: var(--bg);
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    padding: 0.8rem 0.4rem;
}

/* ---- Список документов ---- */
.tariff-commission .tc-doc-list {
    list-style: none;
}
.tariff-commission .tc-doc-list li {
    margin-bottom: 4px;
    padding: 1px 10px !important;
}
.tariff-commission .tc-doc-list a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 1.15rem;
    transition: all 0.2s;
}
.tariff-commission .tc-doc-list a:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}
.tariff-commission .tc-doc-list a i:first-child {
    width: 28px;
    text-align: center;
    font-size: 1.15rem;
    color: var(--primary);
    flex-shrink: 0;
}
.tariff-commission .tc-doc-badge {
    margin-left: auto;
    font-size: 0.75rem;
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.2rem 0.7rem;
    border-radius: 10px;
    font-weight: 600;
    flex-shrink: 0;
}

/* ---- Вложенные группы (архив) ---- */
.tariff-commission .nested-group {
    margin-top: 1rem;
    padding-left: 1rem;
    border-left: 3px solid var(--border);
}
.tariff-commission .nested-group > .tc-accordion-trigger {
    font-size: 1rem;
}
.tariff-commission .nested-group .tc-collapse-inner {
    padding-left: 0.8rem;
    padding-right: 0.8rem;
}

/* ---- Footer ---- */
.tariff-commission .tc-footer {
    text-align: center;
    padding: 1.5rem 0 0.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.tariff-commission .tc-footer i {
    color: var(--primary);
}

.tariff-commission .ipc-footer {
margin-top: auto;
background: var(--ipc-primary);
color: rgba(255,255,255,0.7);
text-align: center;
padding: 24px;
font-size: 1.25rem;
}

/* ---- Back to top ---- */
.tariff-commission .back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 46px; height: 46px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(26,95,168,0.35);
    transition: all 0.2s;
    z-index: 99;
}
.tariff-commission .back-to-top:hover {
    transform: scale(1.08);
    box-shadow: 0 8px 28px rgba(26,95,168,0.45);
}

/* ---- Адаптивность внутри компонента ---- */
@media (max-width: 680px) {
    .tariff-commission {
        padding: 1rem 0.6rem;
    }
    .tariff-commission .tc-header {
        padding: 2rem 1.2rem;
    }
    .tariff-commission .tc-header h1 {
        font-size: 1.5rem;
    }
    .tariff-commission .section-card {
        padding: 1.2rem;
    }
    .tariff-commission .main-section-title {
        font-size: 1.2rem;
    }
    .tariff-commission .tc-accordion-trigger {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }
    .tariff-commission .tc-doc-list a {
        font-size: 0.82rem;
        padding: 0.6rem 0.8rem;
    }
    .tariff-commission .back-to-top {
        width: 40px; height: 40px;
        font-size: 1rem;
        bottom: 1.2rem; right: 1.2rem;
    }
}