/* =====================================================================
   СТИЛИ СТРАНИЦЫ «КАЛЬКУЛЯТОР ВОЗДУХОВОДОВ»
   Использует общие переменные из css/style.css (--orange, --dark, --gray...)
   ===================================================================== */

/* --- Мини-хиро страницы (заголовок) --- */
.calc-hero {
    padding: 160px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, #151515 0%, #0f0f0f 100%);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.calc-hero h1 {
    font-size: clamp(30px, 4vw, 46px);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.calc-hero h1 span {
    color: var(--orange);
}

.calc-hero p {
    max-width: 720px;
    margin: 0 auto;
    color: var(--gray);
    font-size: 17px;
    line-height: 1.7;
}

/* --- Обёртка приложения --- */
.calc-app {
    padding: 60px 0 110px;
    background: #0f0f0f;
}

.calc-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 40px;
    align-items: start;
}

/* --- Вкладки групп (Прямой участок / Отвод / Переход ...) --- */
.calc-groups {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.calc-group-btn {
    background: #181818;
    border: 1px solid rgba(255, 255, 255, .08);
    color: var(--gray);
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: .25s;
    font-family: inherit;
}

.calc-group-btn:hover {
    border-color: rgba(255, 140, 0, .45);
    color: #fff;
}

.calc-group-btn.active {
    background: linear-gradient(135deg, var(--orange), #ff6a00);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 22px rgba(255, 140, 0, .25);
}

/* --- Подвкладки вариантов сечения внутри группы --- */
.calc-variants {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.calc-variant-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .12);
    color: var(--gray);
    padding: 9px 16px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: .25s;
    font-family: inherit;
}

.calc-variant-btn:hover {
    color: #fff;
    border-color: var(--orange-light);
}

.calc-variant-btn.active {
    background: rgba(255, 140, 0, .14);
    border-color: var(--orange);
    color: var(--orange-light);
}

/* --- Карточка формы расчёта --- */
.calc-card {
    background: #161616;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow);
}

.calc-card h2 {
    font-size: 22px;
    margin-bottom: 6px;
}

.calc-card .calc-card-note {
    color: #8f8f8f;
    font-size: 13.5px;
    margin-bottom: 26px;
    line-height: 1.6;
}

/* --- Схема изделия + поля ввода в одну строку --- */
.calc-card-body {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.calc-card-body .calc-fields {
    flex: 1 1 320px;
    margin-bottom: 0;
}

.calc-diagram {
    --diagram-accent: var(--orange, #ff8a00);
    --diagram-dim: #8f8f8f;
    flex: 0 0 260px;
    width: 260px;
    background: #121212;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 12px;
    padding: 10px;
}

.calc-diagram-svg {
    display: block;
    width: 100%;
    height: auto;
}

@media (max-width: 720px) {
    .calc-diagram {
        flex: 1 1 100%;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }
}

.calc-fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 18px;
    margin-bottom: 10px;
}

.calc-field label {
    display: block;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 8px;
    font-weight: 600;
}

.calc-field .calc-input-wrap {
    position: relative;
}

.calc-field input[type="number"],
.calc-field select {
    width: 100%;
    background: #0e0e0e;
    border: 1px solid rgba(255, 255, 255, .12);
    color: #fff;
    padding: 12px 42px 12px 14px;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: .25s;
    -moz-appearance: textfield;
}

.calc-field select {
    padding-right: 14px;
    cursor: pointer;
}

.calc-field input[type="number"]::-webkit-outer-spin-button,
.calc-field input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.calc-field input:focus,
.calc-field select:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px rgba(255, 140, 0, .15);
}

.calc-field .calc-unit {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #777;
    font-size: 13px;
    pointer-events: none;
}

/* --- Блок результата внутри карточки --- */
.calc-result {
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px dashed rgba(255, 255, 255, .12);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.calc-result-values {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.calc-result-item .calc-result-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: #888;
    margin-bottom: 4px;
}

.calc-result-item .calc-result-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--orange-light);
}

.calc-add-btn {
    background: linear-gradient(135deg, var(--orange), #ff6a00);
    color: #fff;
    border: none;
    padding: 13px 26px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: .5px;
    transition: .3s;
    white-space: nowrap;
}

.calc-add-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(255, 140, 0, .35);
}

.calc-add-btn:active {
    transform: translateY(0);
}

.calc-add-btn.saved {
    background: #1e8f4e;
}

/* --- Панель спецификации (правая колонка, липкая) --- */
.calc-spec-panel {
    position: sticky;
    top: 105px;
    background: #161616;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 16px;
    padding: 26px;
    max-height: calc(100vh - 130px);
    display: flex;
    flex-direction: column;
}

.calc-spec-panel h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.calc-spec-panel .calc-spec-sub {
    color: #888;
    font-size: 13px;
    margin-bottom: 18px;
}

.calc-spec-list {
    overflow-y: auto;
    flex: 1;
    margin-bottom: 16px;
    padding-right: 4px;
}

.calc-spec-empty {
    color: #777;
    font-size: 14px;
    text-align: center;
    padding: 30px 10px;
    border: 1px dashed rgba(255, 255, 255, .12);
    border-radius: 10px;
}

.calc-spec-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
}

.calc-spec-row:last-child {
    border-bottom: none;
}

.calc-spec-row-info {
    font-size: 13.5px;
}

.calc-spec-row-title {
    font-weight: 700;
    color: #fff;
    margin-bottom: 3px;
}

.calc-spec-row-meta {
    color: #8a8a8a;
    font-size: 12px;
    line-height: 1.5;
}

.calc-spec-row-meta b {
    color: var(--orange-light);
    font-weight: 600;
}

.calc-spec-remove {
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    padding: 2px 6px;
    border-radius: 6px;
    transition: .2s;
    flex-shrink: 0;
}

.calc-spec-remove:hover {
    color: #ff4d4d;
    background: rgba(255, 77, 77, .1);
}

.calc-spec-totals {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 16px;
    margin-bottom: 16px;
}

.calc-spec-total-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 6px;
}

.calc-spec-total-row.grand {
    font-size: 19px;
    font-weight: 700;
    color: #fff;
}

.calc-spec-total-row.grand span:last-child {
    color: var(--orange-light);
}

.calc-spec-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.calc-btn-secondary {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .16);
    color: #eee;
    padding: 11px 18px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13.5px;
    cursor: pointer;
    transition: .25s;
    font-family: inherit;
}

.calc-btn-secondary:hover {
    border-color: var(--orange);
    color: var(--orange-light);
}

.calc-btn-danger {
    color: #ff8080;
}

.calc-btn-danger:hover {
    border-color: #ff4d4d;
    color: #ff4d4d;
}

/* --- Форма заявки/сохранения --- */
.calc-save-block {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, .1);
    display: flex;
    gap: 8px;
}

.calc-save-block input {
    flex: 1;
    background: #0e0e0e;
    border: 1px solid rgba(255, 255, 255, .12);
    color: #fff;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 13px;
    font-family: inherit;
}

.calc-save-block input:focus {
    outline: none;
    border-color: var(--orange);
}

.calc-saved-list {
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calc-saved-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #0e0e0e;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 8px;
    padding: 9px 12px;
    font-size: 13px;
}

.calc-saved-item span {
    color: #ddd;
    font-weight: 600;
}

.calc-saved-item .calc-saved-actions {
    display: flex;
    gap: 6px;
}

.calc-saved-item button {
    background: none;
    border: none;
    color: var(--orange-light);
    font-size: 12px;
    cursor: pointer;
    font-weight: 700;
}

.calc-saved-item button.calc-danger-link {
    color: #ff6b6b;
}

/* --- Toast-уведомление --- */
.calc-toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #1e1e1e;
    border: 1px solid rgba(255, 140, 0, .4);
    color: #fff;
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 15px 35px rgba(0, 0, 0, .5);
    opacity: 0;
    pointer-events: none;
    transition: .3s;
    z-index: 2000;
}

.calc-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* =====================================================================
   АДАПТИВНОСТЬ
   ===================================================================== */

@media (max-width: 1100px) {
    .calc-layout {
        grid-template-columns: 1fr;
    }

    .calc-spec-panel {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .calc-hero {
        padding: 130px 0 45px;
    }

    .calc-card {
        padding: 22px;
    }

    .calc-result {
        flex-direction: column;
        align-items: stretch;
    }

    .calc-add-btn {
        width: 100%;
    }
}

/* Снижаем нагрузку на слабых устройствах / учитываем системную настройку */
@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
    }
}

/* --- Печать спецификации --- */
@media print {
    header, .calc-hero, .calc-groups, .calc-variants, .calc-card,
    footer, #cookie-banner, .calc-spec-actions,
    .calc-save-block, .calc-saved-list {
        display: none !important;
    }

    .calc-layout {
        display: block;
    }

    .calc-spec-panel {
        position: static;
        border: none;
        max-height: none;
        color: #000;
        background: #fff;
    }
}

/* =====================================================================
   ДОПОЛНИТЕЛЬНЫЕ СТИЛИ — КАЛЬКУЛЯТОР ГИБКИ ЛИСТА
   ===================================================================== */

.gibka-flange-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.gibka-flange-row label {
    display: none;
}

.gibka-flange-row .gibka-flange-inputwrap {
    flex: 1;
}

.gibka-flip-btn,
.gibka-del-btn {
    background: #1c1c1c;
    border: 1px solid rgba(255, 255, 255, .14);
    color: var(--gray);
    width: 42px;
    height: 44px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    flex-shrink: 0;
    transition: .2s;
}

.gibka-flip-btn:hover {
    border-color: var(--orange);
    color: var(--orange-light);
}

.gibka-flip-btn.active {
    background: rgba(255, 140, 0, .16);
    border-color: var(--orange);
    color: var(--orange-light);
}

.gibka-del-btn:hover {
    border-color: #ff4d4d;
    color: #ff4d4d;
}

.gibka-flanges-wrap {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
}

.gibka-flanges-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.gibka-flanges-head span {
    font-size: 13px;
    color: var(--gray);
    font-weight: 600;
}

.gibka-add-flange-btn {
    background: transparent;
    border: 1px dashed rgba(255, 140, 0, .5);
    color: var(--orange-light);
    padding: 9px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: .2s;
    align-self: flex-start;
}

.gibka-add-flange-btn:hover {
    background: rgba(255, 140, 0, .1);
}

.gibka-section-title {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .6px;
    color: #888;
    margin: 26px 0 14px;
    padding-top: 20px;
    border-top: 1px dashed rgba(255, 255, 255, .1);
}

.gibka-section-title:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

.gibka-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.gibka-result-box {
    background: #0e0e0e;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 10px;
    padding: 14px 16px;
}

.gibka-result-box .gibka-result-label {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .4px;
    color: #888;
    margin-bottom: 6px;
}

.gibka-result-box .gibka-result-value {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.gibka-development-box {
    background: rgba(255, 140, 0, .08);
    border: 1px solid rgba(255, 140, 0, .3);
    border-radius: 12px;
    padding: 18px 20px;
    margin-top: 20px;
}

.gibka-development-box .gibka-dev-value {
    font-size: 26px;
    font-weight: 800;
    color: var(--orange-light);
    margin-bottom: 6px;
}

.gibka-development-box .gibka-dev-note {
    font-size: 12.5px;
    color: #999;
    line-height: 1.6;
}

.gibka-fit-note {
    margin-top: 14px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
}

.gibka-fit-note.ok {
    background: rgba(40, 180, 100, .12);
    border: 1px solid rgba(40, 180, 100, .35);
    color: #5fd98a;
}

.gibka-fit-note.warn {
    background: rgba(255, 90, 90, .1);
    border: 1px solid rgba(255, 90, 90, .35);
    color: #ff8a8a;
}

.gibka-price-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px dashed rgba(255, 255, 255, .12);
}

.gibka-price-values {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.gibka-settings-note {
    font-size: 12px;
    color: #777;
    margin-top: -6px;
    margin-bottom: 16px;
    line-height: 1.6;
}

.gibka-word-btn {
    background: linear-gradient(135deg, #2c6bd6, #1f4fa8);
}

.gibka-word-btn:hover {
    box-shadow: 0 12px 25px rgba(44, 107, 214, .35);
}

.gibka-logo-preview {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    font-size: 12px;
    color: #777;
}

.gibka-logo-preview img {
    width: 34px;
    height: auto;
    opacity: .9;
}

@media (max-width: 768px) {
    .gibka-flange-row {
        flex-wrap: wrap;
    }
}