/* ================================================================
   ГИД: ЛОГИЧЕСКИЕ ОПЕРАТОРЫ, УСЛОВИЯ И ЦИКЛЫ
   ================================================================ */

.log-root { padding: 28px 32px; }

@media (max-width: 640px) {
    .log-root { padding: 18px 14px; }
}

/* ---------- Тулбар ---------- */
.log-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px dashed var(--line, #E8E2DA);
}

.log-toolbar__left,
.log-toolbar__right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.log-toolbar__label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #6B6470;
}

.log-progress {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 700;
    color: #2A1745;
    background: #C6F432;
    padding: 5px 14px;
    border-radius: 999px;
}

/* ---------- Переключатель уровня ---------- */
.log-level-switch {
    display: inline-flex;
    background: #FAF6F0;
    border: 1.5px solid #E8E2DA;
    border-radius: 999px;
    padding: 3px;
    gap: 2px;
}

.log-level-btn {
    padding: 7px 16px;
    border: none;
    background: transparent;
    border-radius: 999px;
    font-family: 'Manrope', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: #6B6470;
    cursor: pointer;
    transition: background .2s, color .2s;
}

.log-level-btn.is-active {
    background: #6B3FA0;
    color: #fff;
}

/* ---------- Навигация ---------- */
.log-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.log-nav__item {
    padding: 8px 16px;
    border: 1.5px solid #E8E2DA;
    background: #fff;
    border-radius: 999px;
    font-family: 'Manrope', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: #6B6470;
    cursor: pointer;
    transition: all .2s;
}

.log-nav__item:hover {
    border-color: #6B3FA0;
    color: #6B3FA0;
}

.log-nav__item.is-active {
    background: #2A1745;
    color: #C6F432;
    border-color: #2A1745;
}

/* ---------- Контент ---------- */
.log-content {
    min-height: 400px;
    animation: logFadeIn .35s ease;
}

@keyframes logFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.log-block__title {
    font-family: 'Fraunces', serif;
    font-weight: 900;
    font-size: 28px;
    color: #2A1745;
    margin: 0 0 12px;
    line-height: 1.15;
    letter-spacing: -.02em;
}

@media (max-width: 640px) {
    .log-block__title { font-size: 22px; }
}

.log-block__desc {
    font-size: 15px;
    line-height: 1.65;
    color: #1A1420;
    margin: 0 0 22px;
}

/* ---------- Карточки операторов ---------- */
.log-op-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 22px;
}

.log-op-card {
    padding: 20px;
    background: #FAF6F0;
    border: 1.5px solid #E8E2DA;
    border-radius: 16px;
    transition: border-color .2s, transform .15s;
}

.log-op-card:hover {
    border-color: #6B3FA0;
    transform: translateY(-2px);
}

.log-op-card__symbol {
    font-family: 'JetBrains Mono', monospace;
    font-size: 28px;
    font-weight: 700;
    color: #6B3FA0;
    margin-bottom: 8px;
}

.log-op-card__name {
    font-family: 'Manrope', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: #2A1745;
    margin: 0 0 8px;
}

.log-op-card__desc {
    font-size: 14px;
    line-height: 1.5;
    color: #6B6470;
    margin: 0 0 12px;
}

/* ---------- Диаграмма Эйлера-Венна ---------- */
.log-venn {
    display: block;
    margin: 16px auto;
    max-width: 100%;
}

/* ---------- Таблица истинности ---------- */
.log-truth-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 14px;
}

.log-truth-table th,
.log-truth-table td {
    padding: 10px 14px;
    border: 1px solid #E8E2DA;
    text-align: center;
}

.log-truth-table th {
    background: #2A1745;
    color: #C6F432;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.log-truth-table td.is-true {
    background: #E8F5E9;
    color: #1B5E20;
    font-weight: 700;
}

.log-truth-table td.is-false {
    background: #FFEBEE;
    color: #B71C1C;
}

/* ---------- Пример из Excel ---------- */
.log-excel {
    padding: 16px 18px;
    background: #F1F8E9;
    border-left: 4px solid #4CAF50;
    border-radius: 0 12px 12px 0;
    margin: 16px 0;
}

.log-excel__label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: #2E7D32;
    font-weight: 700;
    margin-bottom: 6px;
}

.log-excel code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    background: rgba(42, 23, 69, .08);
    color: #2A1745;
    padding: 2px 6px;
    border-radius: 5px;
}

/* ---------- Конструктор ---------- */
.log-builder {
    padding: 24px;
    background: #FAF6F0;
    border: 1.5px solid #E8E2DA;
    border-radius: 16px;
}

.log-builder__step {
    margin-bottom: 20px;
}

.log-builder__step-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: #6B3FA0;
    font-weight: 700;
    margin-bottom: 8px;
}

.log-builder__options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.log-builder__option {
    padding: 10px 18px;
    background: #fff;
    border: 1.5px solid #E8E2DA;
    border-radius: 999px;
    font-family: 'Manrope', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: #2A1745;
    cursor: pointer;
    transition: all .2s;
}

.log-builder__option:hover {
    border-color: #6B3FA0;
    background: #EDE4FF;
}

.log-builder__option.is-selected {
    background: #6B3FA0;
    color: #fff;
    border-color: #6B3FA0;
}

.log-builder__result {
    margin-top: 20px;
    padding: 20px;
    background: #2A1745;
    color: #fff;
    border-radius: 14px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    line-height: 1.6;
    white-space: pre-wrap;
    animation: logFadeIn .3s ease;
}

/* ---------- Адаптив ---------- */
@media (max-width: 640px) {
    .log-op-grid { grid-template-columns: 1fr; }
    .log-nav__item { font-size: 12px; padding: 6px 12px; }
}