/* Stiluri comune pentru toate lucrarile de laborator (incarcat ultimul in _Layout). */

:root {
    --tgn-primary: #1f6fb2;
    --tgn-primary-dark: #185a91;
    --tgn-primary-soft: rgba(31, 111, 178, .14);
    --tgn-text: #1e2a36;
    --tgn-muted: #6b7886;
    --tgn-border: #dfe5ec;
    --tgn-row: #eef2f6;
    --tgn-head: #f4f7fa;
    --tgn-bg: #f3f5f8;
}

/* ---------- Header ---------- */
:root { --tgn-header-h: 50px; --tgn-nav-w: 224px; --tgn-nav-bg: #26323e; }

.page-header.navbar.tgn-header {
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--tgn-header-h);
    min-height: 0;
    margin: 0;
    padding: 0 20px;
    background: #1f2a35;
    border: 0;
}
.tgn-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    text-decoration: none;
}
.tgn-brand:hover, .tgn-brand:focus { color: #fff; text-decoration: none; }
.tgn-brand-mark {
    display: inline-block;
    padding: 3px 7px;
    border-radius: 4px;
    background: var(--tgn-primary);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: .5px;
}
.tgn-brand-text { font-size: 14px; font-weight: 600; white-space: nowrap; }
.tgn-top-label { margin-left: auto; color: #aebccb; font-size: 13px; white-space: nowrap; }

.tgn-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 34px;
    height: 34px;
    padding: 0 7px;
    background: transparent;
    border: 1px solid #3c4b5a;
    border-radius: 6px;
}
.tgn-nav-toggle span { display: block; height: 2px; background: #cfd8e3; border-radius: 1px; }

/* ---------- Meniu lateral ---------- */
.tgn-nav {
    position: fixed;
    top: var(--tgn-header-h);
    bottom: 0;
    left: 0;
    z-index: 1000;
    width: var(--tgn-nav-w);
    overflow-y: auto;
    padding: 10px 0 24px;
    background: var(--tgn-nav-bg);
}
.tgn-nav-section {
    padding: 14px 18px 6px;
    color: #8193a6;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .6px;
    text-transform: uppercase;
}
.tgn-nav ul { list-style: none; margin: 0; padding: 0; }
.tgn-nav a {
    display: block;
    padding: 7px 18px 7px 15px;
    border-left: 3px solid transparent;
    color: #cdd6e0;
    font-size: 13.5px;
    line-height: 1.35;
    text-decoration: none;
}
.tgn-nav a:hover, .tgn-nav a:focus {
    background: #2f3d4b;
    color: #fff;
    text-decoration: none;
}
.tgn-nav a.active {
    background: #1b4f7e;
    border-left-color: #5fb3f5;
    color: #fff;
    font-weight: 600;
}
.tgn-nav-backdrop { display: none; }

.page-container.tgn-container { margin-top: var(--tgn-header-h); }
.page-content-wrapper .page-content {
    margin-left: var(--tgn-nav-w);
    margin-top: 0;
    min-height: calc(100vh - var(--tgn-header-h));
    padding: 20px 24px 24px;
}

/* Ecrane mici: meniul devine sertar deschis din butonul din header */
@media (max-width: 991px) {
    .tgn-nav-toggle { display: flex; }
    .tgn-top-label { display: none; }
    .tgn-nav {
        transform: translateX(-100%);
        transition: transform .2s ease;
        box-shadow: 2px 0 12px rgba(0, 0, 0, .25);
    }
    .tgn-nav-open .tgn-nav { transform: none; }
    .tgn-nav-open .tgn-nav-backdrop {
        display: block;
        position: fixed;
        inset: var(--tgn-header-h) 0 0 0;
        z-index: 999;
        background: rgba(15, 23, 32, .4);
    }
    .page-content-wrapper .page-content { margin-left: 0; padding: 16px; }
}

/* ---------- Pagina ---------- */
.page-content-white .page-content {
    background: var(--tgn-bg);
    color: var(--tgn-text);
    padding-bottom: 24px;
}
.tgn-page-title {
    margin: 4px 0 18px;
    font-size: 26px;
    font-weight: 600;
    color: var(--tgn-text);
}
.tgn-footer {
    margin-top: 40px;
    padding-top: 14px;
    border-top: 1px solid var(--tgn-border);
    color: var(--tgn-muted);
    font-size: 12px;
}

/* Selectorul de buletin cromatografic */
.page-content > .form-group,
.page-content > .row > .form-group {
    background: #fff;
    border: 1px solid var(--tgn-border);
    border-radius: 8px;
    padding: 14px 16px;
    margin-bottom: 20px;
}
.page-content .form-group > label {
    font-weight: 600;
    margin-bottom: 8px;
}
.page-content .select2-container--bootstrap .select2-selection {
    border-radius: 6px;
    border-color: #c8d1db;
}

/* ---------- Carduri / tabele ---------- */
.tgn-card,
.page-content .table {
    background: #fff;
    border: 1px solid var(--tgn-border) !important;
    border-radius: 8px;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.tgn-card { padding: 16px; margin-bottom: 20px; }
.tgn-diagram img { display: block; max-width: 100%; height: auto; margin: 0 auto; }

.page-content .table { margin-bottom: 20px; }
.page-content .table > thead > tr > th,
.page-content .table > tbody > tr > th {
    background: var(--tgn-head);
    color: #3a4756;
    font-weight: 600;
    text-align: left;
    padding: 9px 14px;
    border: 0;
    border-bottom: 1px solid var(--tgn-border);
}
/* primul rand din antet (titlul tabelului) */
.page-content .table_style > thead { background: none; color: inherit; }
.page-content .table > thead > tr > td {
    background: var(--tgn-head);
    color: #3a4756;
}
.page-content .table > thead > tr:first-child > [colspan] {
    background: var(--tgn-primary);
    color: #fff;
    font-size: 14px;
    border-bottom: 0;
}
.page-content .table > tbody > tr > td,
.page-content .table > thead > tr > td {
    padding: 8px 14px;
    vertical-align: middle;
    text-align: left;
    border: 0;
    border-top: 1px solid var(--tgn-row);
}
.page-content .table > tbody > tr:first-child > td { border-top: 0; }
.page-content .table-hover > tbody > tr:hover > td { background: #f8fafc; }

/* Tabelul cu componenti (Proprietati): numerele aliniate la dreapta */
#bottom_table td:not(:first-child),
#bottom_table th:not(:first-child) {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* ---------- Campuri ---------- */
.page-content .table input:not(.btn):not([type=checkbox]):not([type=radio]),
.page-content .table select:not(.select2) {
    width: 100%;
    max-width: 240px;
    height: 34px;
    padding: 6px 10px;
    border: 1px solid #c8d1db;
    border-radius: 6px;
    background: #fff;
    color: var(--tgn-text);
    font-size: 14px;
    box-shadow: none;
    transition: border-color .15s, box-shadow .15s;
}
.page-content .table input:not(.btn):focus,
.page-content .table select:focus,
.page-content textarea:focus {
    outline: 0;
    border-color: var(--tgn-primary);
    box-shadow: 0 0 0 3px var(--tgn-primary-soft);
}
.page-content .table input[readonly] { background: var(--tgn-head); }

/* Zonele de rezultate */
.page-content textarea {
    width: 100%;
    min-height: 140px;
    padding: 10px 12px;
    border: 1px solid #c8d1db;
    border-radius: 6px;
    background: #f8fafc;
    font-family: Consolas, "Courier New", monospace;
    font-size: 13px;
    line-height: 1.5;
    resize: vertical;
    max-width: none; /* Site.css limita textarea la 280px */
}

/* ---------- Butoane ---------- */
.page-content .table input.btn { height: auto; line-height: 1.43; margin: 4px 0; }
.page-content .btn-primary {
    background: var(--tgn-primary);
    border-color: var(--tgn-primary);
    border-radius: 6px;
    padding: 8px 20px;
    font-weight: 600;
    white-space: normal;
}
.page-content .btn-primary:hover,
.page-content .btn-primary:focus,
.page-content .btn-primary:active {
    background: var(--tgn-primary-dark);
    border-color: var(--tgn-primary-dark);
}
.page-content > .btn-primary { margin: 4px 0 20px; }

/* ---------- Grafice ---------- */
.page-content div[id^="chart"]:not(:empty) {
    background: #fff;
    border: 1px solid var(--tgn-border);
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 20px;
    box-sizing: border-box;
    overflow: hidden;
}

/* ---------- Pagini lungi pe doua coloane ---------- */
.tgn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(440px, 100%), 1fr));
    gap: 20px;
    align-items: start;
    margin-bottom: 20px;
}
.tgn-grid > .table { margin: 0; width: 100% !important; }

/* Tabel de formular singur pe pagina */
.page-content > .tgn-form-table { max-width: 760px; }

/* Capacitatea maxima: butonul centrat sub tabel */
.table_capacitate + .btn-primary { display: block; margin: 0 auto 20px; }

/* ---------- Simulare retea de gaze ---------- */
.rg-toolbar { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; }
.rg-group { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rg-toolbar .btn { border-radius: 6px; }
.rg-mod { background: #d6ebfa; border-color: #9fcbee; color: #12507f; font-weight: 600; }
.rg-mod.rg-mod-pipes { background: #ffe1b3; border-color: #f0b35c; color: #7a4600; }
.rg-select { width: auto; min-width: 210px; border-radius: 6px; }
.rg-tol { width: 80px; border-radius: 6px; }
.rg-label { font-weight: 600; margin: 0; }
.rg-upload { position: relative; overflow: hidden; margin: 0; }
.rg-upload input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.rg-mesaj { flex-basis: 100%; min-height: 18px; font-size: 13px; color: var(--tgn-muted); }
.rg-mesaj-ok { color: #1e7b3c; }
.rg-mesaj-eroare { color: #b42318; }

.rg-canvas-card, .rg-data-card { padding: 12px; }
.rg-hint { margin: 0 0 8px; color: var(--tgn-muted); font-size: 13px; }
.rg-canvas {
    display: block; width: 100%; height: auto; min-height: 320px;
    background: #fbfcfe;
    background-image: radial-gradient(#dfe5ec 1px, transparent 1px);
    background-size: 20px 20px;
    border: 1px solid var(--tgn-border); border-radius: 6px; cursor: crosshair;
}
.rg-pipe { stroke: #2980b9; stroke-width: 3; }
.rg-pipe-label { font: bold 11px Arial, sans-serif; fill: #12355b; }
.rg-pipe-q { font: 11px Arial, sans-serif; fill: #b45309; }
.rg-node { stroke-width: 1.5; }
.rg-node-src { fill: #90ee90; stroke: #006400; }
.rg-node-cons { fill: #f5f5f5; stroke: #000; }
.rg-node-sel { fill: #ffff00; stroke: #ff8c00; stroke-width: 2.5; }
.rg-node-label { font: bold 13px "Segoe UI", sans-serif; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.rg-node-p { font: 11px Arial, sans-serif; fill: #b45309; text-anchor: middle; pointer-events: none; }
.rg-legend { display: flex; gap: 16px; margin-top: 8px; font-size: 12px; color: var(--tgn-muted); }
.rg-dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 5px; vertical-align: -1px; border: 1px solid #000; }
.rg-dot-src { background: #90ee90; border-color: #006400; }
.rg-dot-cons { background: #f5f5f5; }
.rg-dot-sel { background: #ffff00; border-color: #ff8c00; }

.rg-data-card .nav-tabs { margin-bottom: 0; }
.rg-data-card .tab-content { max-height: 560px; overflow-y: auto; }
.page-content .rg-data-card .table { border: 0 !important; border-radius: 0; box-shadow: none; margin: 0; }
.page-content .table .rg-cell { max-width: 140px; height: 30px; }
.page-content .table .rg-cell.rg-invalid { border-color: #b42318; box-shadow: 0 0 0 3px rgba(180, 35, 24, .15); }
.rg-id { font-weight: 600; }
.page-content .table .rg-num { text-align: right; font-variant-numeric: tabular-nums; }
#retea-app > .rg-label { display: block; }
#rgLog { min-height: 260px; margin-top: 6px; }

/* ---------- Defecte: calculele pe un rand, butoanele aliniate jos ---------- */
/* 4 coloane pe ecran lat, apoi 2, apoi 1 - niciodata 3+1 */
.tgn-grid-calc {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: stretch;
}
@media (max-width: 1279px) { .tgn-grid-calc { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .tgn-grid-calc { grid-template-columns: 1fr; } }
.tgn-calc-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--tgn-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.page-content .tgn-calc-card > .table {
    margin: 0;
    border: 0 !important;
    border-radius: 0;
    box-shadow: none;
}
.page-content .tgn-calc-card > .table > tbody > tr > td,
.page-content .tgn-calc-card > .table > thead > tr > th {
    padding: 7px 10px;
    font-size: 13px;
}
.page-content .tgn-calc-card > .table > tbody > tr > td:last-child { width: 42%; padding-right: 10px; }
.page-content .tgn-calc-card > .table input:not(.btn):not([type=checkbox]):not([type=radio]) {
    padding: 6px 8px;
    font-size: 13px;
}
.tgn-calc-actions {
    margin-top: auto; /* impinge butonul in subsolul cardului */
    padding: 12px;
    border-top: 1px solid var(--tgn-row);
    text-align: center;
}

/* ---------- Date de intrare | grafic, pe aceeasi inaltime ---------- */
.tgn-calc-layout {
    display: grid;
    grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
    gap: 20px;
    align-items: stretch;
    margin-bottom: 20px;
}
@media (max-width: 1100px) { .tgn-calc-layout { grid-template-columns: 1fr; } }
.tgn-card-title {
    padding: 9px 14px;
    background: var(--tgn-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}
.page-content .tgn-calc-chart div.tgn-chart {
    height: 430px;
    margin: 0;
    padding: 8px;
    border: 0;
    border-radius: 0;
}
.tgn-calc-result {
    margin-top: auto;
    padding: 12px 14px;
    border-top: 1px solid var(--tgn-row);
}
.tgn-calc-result label { display: block; margin-bottom: 6px; font-weight: 600; }
.page-content .tgn-calc-result textarea { display: block; min-height: 0; margin: 0; }
.page-content .table > tbody > tr.tgn-section > th { padding-top: 8px; padding-bottom: 8px; font-size: 13px; }
.page-content .tgn-calc-layout .table > tbody > tr > td:last-child { width: 46%; }

/* ---------- Proprietati: doua carduri egale + tabelul de componenti ---------- */
.tgn-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    align-items: stretch;
}
@media (max-width: 1100px) { .tgn-grid-2 { grid-template-columns: 1fr; } }
.page-content .tgn-grid-2 > .table { margin: 0; height: 100%; }

/* valori calculate: text simplu, nu casuta de input */
.page-content .table input.tgn-readonly:not(.btn):not([type=checkbox]):not([type=radio]) {
    max-width: none;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.tgn-hint { display: block; margin-top: 4px; color: var(--tgn-muted); font-size: 12px; }
.tgn-center-action { margin: 20px 0; text-align: center; }

.tgn-card-title-flex {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 16px;
}
.tgn-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    font-size: 13px;
    font-weight: 400;
    cursor: pointer;
}
.tgn-toggle input { margin: 0; }
.tgn-table-scroll { max-height: 640px; overflow: auto; }
.page-content .tgn-components .table {
    margin: 0;
    border: 0 !important;
    border-radius: 0;
    box-shadow: none;
    overflow: visible; /* altfel antetul sticky nu functioneaza */
}
.page-content #bottom_table { font-size: 13.5px; }
.page-content #bottom_table > thead > tr > th {
    position: sticky;
    top: 0;
    z-index: 1;
    height: 34px;
    padding: 7px 12px;
    background: var(--tgn-head);
    color: #3a4756;
    white-space: nowrap;
}
.page-content #bottom_table > thead > tr:nth-child(2) > th { top: 34px; text-align: right; }
.page-content #bottom_table > thead > tr:first-child > th[colspan] {
    background: var(--tgn-head);
    color: var(--tgn-muted);
    font-size: 11px;
    letter-spacing: .5px;
    text-align: center;
    text-transform: uppercase;
    border-bottom: 1px solid var(--tgn-border);
}
.page-content #bottom_table > thead > tr > th[rowspan] { vertical-align: bottom; }
.page-content #bottom_table > tbody > tr > td { padding: 6px 12px; }
.page-content #bottom_table .tgn-group,
.page-content #bottom_table .tgn-group-start { border-left: 2px solid var(--tgn-border); }
.page-content #bottom_table > tbody > tr:nth-child(even) > td { background: #f8fafc; }
.page-content #bottom_table > tbody > tr.tgn-prezent > td:first-child { font-weight: 600; }
.page-content #bottom_table > tbody > tr.tgn-absent > td { color: #a3adb8; }
.tgn-doar-prezenti tr.tgn-absent { display: none; }

/* Transformari: al doilea rand de carduri */
.tgn-grid-spaced { margin-top: 20px; }
.page-content .table td img { max-width: 100%; height: auto; }

/* Graficul principal umple inaltimea cardului (Curgere tranzitorie) */
.page-content .tgn-calc-chart div.tgn-chart.tgn-chart-fill { flex: 1 1 auto; height: auto; min-height: 430px; }
.tgn-grid-2 > .tgn-calc-chart { min-width: 0; }

/* Operare conducta: schema, rezultate */
.tgn-diagram-card { margin-bottom: 20px; }
.tgn-diagram-card .tgn-diagram { padding: 16px; }
.tgn-result-card .tgn-calc-result { border-top: 0; }
.tgn-output-cols {
    min-height: 120px;
    margin: 0;
    padding: 10px 14px;
    column-count: 2;
    column-gap: 40px;
    border: 1px solid #c8d1db;
    border-radius: 6px;
    background: #f8fafc;
    font-family: Consolas, "Courier New", monospace;
    font-size: 13px;
    line-height: 1.5;
    white-space: pre-wrap;
}
@media (max-width: 767px) { .tgn-output-cols { column-count: 1; } }
/* custom.css fixa #chartPresiune la 500px; graficele din carduri au aceeasi inaltime */
.page-content .tgn-calc-chart div#chartPresiune { height: 430px; }