/* =====================================================================
   Plan de travail Optimisation / Génération
   Tout est préfixé par .opti-root : ces règles ne débordent pas ailleurs.
   Rendu volontairement compact (outil de saisie rapide).
   ===================================================================== */

.opti-root {
    height: 100%;
    min-height: 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    outline: none;
    overflow: hidden;
}

/* ---------- En-tête ---------- */

.opti-root .opti-head {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin: 0 0 10px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.opti-root .opti-title {
    font-size: 1.45rem;
    margin: 0;
    letter-spacing: -0.025em;
}

.opti-root .opti-sub {
    font-size: 0.82rem;
    color: var(--muted);
}

.opti-root .opti-head-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.opti-root .hotkey-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.74rem;
    color: var(--faint);
}

.opti-root .hotkey-hint kbd,
.opti-root kbd {
    display: inline-block;
    padding: 0.05em 0.42em;
    border-radius: 5px;
    border: 1px solid var(--line-strong);
    border-bottom-width: 2px;
    background: var(--surface);
    color: var(--ink-2);
    font-size: 0.7rem;
}

.opti-root .mobile-topbar {
    display: none;
}

/* ---------- Barre de paramètres ---------- */

.opti-root .params-panel {
    display: block;
    flex-shrink: 0;
    margin-bottom: 10px;
    padding: 10px 14px 8px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow-sm);
}

.opti-root .params-primary {
    display: flex;
    align-items: flex-end;
    gap: 14px 18px;
    flex-wrap: wrap;
}

.opti-root .params-secondary {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 9px;
    padding-top: 8px;
    border-top: 1px dashed var(--line);
}

.opti-root .param-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.opti-root .param-label {
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    white-space: nowrap;
}

.opti-root .param-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.opti-root .param-controls:has(.flache-step-btn) {
    gap: 0;
}

.opti-root .tb {
    width: 88px;
    min-width: 0;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--line-strong);
    border-radius: 9px;
    background: var(--surface);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.opti-root .tb:hover {
    border-color: var(--faint);
}

.opti-root .tb:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--ring);
    position: relative;
    z-index: 1;
}

.opti-root .tb-flache {
    width: 58px;
}

.opti-root .param-controls:has(.flache-step-btn) .tb,
.opti-root .param-controls:has(.flache-step-btn) .mobile-numpad-wrapper .tb {
    border-radius: 0;
}

.opti-root .flache-step-btn {
    width: 30px;
    height: 34px;
    padding: 0;
    border: 1px solid var(--line-strong);
    background: var(--surface-2);
    color: var(--ink-2);
    font-weight: 700;
    font-size: 1rem;
    line-height: 1;
    transition: background-color .12s ease, color .12s ease;
}

.opti-root .flache-step-btn:first-child {
    border-radius: 9px 0 0 9px;
    border-right: none;
}

.opti-root .flache-step-btn:last-child {
    border-radius: 0 9px 9px 0;
    border-left: none;
}

.opti-root .flache-step-btn:hover:not(:disabled) {
    background: var(--accent-soft);
    color: var(--accent-ink);
}

.opti-root .flache-step-btn:active:not(:disabled) {
    background: color-mix(in oklab, var(--accent) 20%, white);
}

.opti-root .run-btn-in-panel {
    height: 34px;
    padding: 0 16px;
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    align-self: flex-end;
}

/* Options = puces à cocher */
.opti-root .chk {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    margin: 0;
    padding: 4px 11px 4px 8px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    background: var(--surface);
    color: var(--ink-2);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

.opti-root .chk:hover {
    border-color: var(--faint);
}

.opti-root .chk:has(input:checked) {
    background: var(--accent-soft);
    border-color: var(--accent-line);
    color: var(--accent-ink);
}

.opti-root .chk input {
    width: 14px;
    height: 14px;
    margin: 0;
    accent-color: var(--accent);
}

.opti-root .meta {
    font-size: 0.76rem;
    color: var(--muted);
    white-space: nowrap;
}

.opti-root .params-secondary .meta:first-of-type {
    margin-left: auto;
}

.opti-root .meta strong {
    font-family: var(--font-mono);
    color: var(--ink);
    font-weight: 600;
}

/* ---------- Panneaux ---------- */

.opti-root .opti-layout,
.opti-root .layout {
    display: grid;
    gap: 4px;
    flex: 1;
    min-height: 0;
    grid-template-columns: var(--split-x, 430px) 12px minmax(0, 1fr);
}

.opti-root .opti-left,
.opti-root .left {
    min-width: 280px;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow-sm);
}

.opti-root .panel-head {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin-bottom: 8px;
}

.opti-root .panel-title {
    display: flex;
    align-items: baseline;
    gap: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
}

.opti-root .panel-title .mono {
    font-size: 0.82rem;
    letter-spacing: 0;
    color: var(--ink);
}

.opti-root .panel-select-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.opti-root .panel-select-row select {
    flex: 1;
    min-width: 0;
    font-weight: 600;
}

.opti-root .panel-select-row .btn {
    flex: 0 0 auto;
}

.opti-root .panel-status {
    font-size: 0.76rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.opti-root .panel-status.is-warn { color: var(--amber-ink); }
.opti-root .panel-status.is-error { color: var(--danger); }

/* Séparateurs déplaçables */
.opti-root .splitter {
    position: relative;
    user-select: none;
    border-radius: 6px;
    background: transparent;
    transition: background-color .15s ease;
}

.opti-root .splitter::after {
    content: "";
    position: absolute;
    border-radius: 4px;
    background: var(--line-strong);
    transition: background-color .15s ease;
}

.opti-root .splitter:hover {
    background: var(--accent-soft);
}

.opti-root .splitter:hover::after {
    background: var(--accent);
}

.opti-root .splitter-vertical {
    width: 12px;
    cursor: col-resize;
}

.opti-root .splitter-vertical::after {
    left: 4px;
    width: 4px;
    top: calc(50% - 22px);
    height: 44px;
}

.opti-root .splitter-horizontal {
    height: 10px;
    cursor: row-resize;
}

.opti-root .splitter-horizontal::after {
    top: 3px;
    height: 4px;
    left: calc(50% - 22px);
    width: 44px;
}

/* ---------- Résultat (Optimisation) ---------- */

.opti-root .opti-right {
    min-width: 0;
    min-height: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    gap: 8px;
}

.opti-root .result-bar {
    display: flex;
    align-items: stretch;
    gap: 8px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.opti-root .result-chip {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 11px;
    background: var(--surface);
    border: 1px solid var(--line);
}

.opti-root .result-k {
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
}

.opti-root .result-u {
    font-size: 0.74rem;
    color: var(--faint);
}

.opti-root .result-spacer {
    flex: 1;
}

.opti-root .val {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
}

.opti-root .result-chip.is-strong {
    background: var(--success-soft);
    border-color: color-mix(in oklab, var(--success) 25%, white);
}

.opti-root .result-chip.is-strong .val {
    color: var(--success);
    font-size: 1.1rem;
}

/* Zone du schéma : papier millimétré */
.opti-root .schema-wrap,
.opti-root .right {
    min-height: 0;
    min-width: 0;
    box-sizing: border-box;
    padding: 8px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 14px;
    background:
        radial-gradient(circle, color-mix(in oklab, var(--line-strong) 80%, transparent) 1px, transparent 1.3px) 0 0 / 18px 18px,
        var(--surface-2);
}

.opti-root .schema-svg {
    width: min(96%, 980px);
    height: auto;
    max-width: 100%;
    max-height: 96%;
    display: block;
    filter: drop-shadow(0 10px 18px rgba(22, 24, 27, .12));
}

.opti-root .empty-view {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 24px;
    text-align: center;
    color: var(--muted);
    font-size: 0.88rem;
}

.opti-root .empty-view .bi {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 1px dashed var(--line-strong);
    background: var(--surface);
    color: var(--faint);
    font-size: 1.4rem;
}

.opti-root .empty-view strong {
    color: var(--ink-2);
    font-size: 0.95rem;
}

.opti-root .nav-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    flex-shrink: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
}

.opti-root .step-btn {
    min-width: 52px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.86rem;
    font-weight: 700;
    transition: background-color .12s ease, border-color .12s ease, color .12s ease, transform .1s ease;
}

.opti-root .step-btn:hover:not(:disabled) {
    background: var(--accent-soft);
    border-color: var(--accent-line);
    color: var(--accent-ink);
}

.opti-root .step-btn:active:not(:disabled) {
    transform: translateY(1px);
}

.opti-root .step-btn:disabled {
    opacity: 0.45;
}

.opti-root .step-btn-large {
    min-width: 60px;
}

.opti-root .step-btn-print {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-width: 118px;
    margin-right: auto;
    font-family: var(--font-ui);
}

.opti-root .step-btn-run-mobile {
    display: none;
    min-width: 118px;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
    font-family: var(--font-ui);
}

/* ---------- Génération : liste des solutions ---------- */

.opti-root .left-split {
    display: grid;
    grid-template-rows: var(--split-y, 260px) 10px 1fr;
    flex: 1;
    min-height: 0;
    gap: 4px;
}

.opti-root .list-panel {
    min-height: 0;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: 10px;
}

.opti-root .list-panel .table {
    font-size: 0.82rem;
}

.opti-root .list-panel thead th {
    position: sticky;
    top: 0;
    z-index: 1;
    padding: 6px 10px;
}

.opti-root .list-panel td {
    padding: 5px 10px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.opti-root .list-panel tbody tr {
    cursor: pointer;
}

.opti-root .list-panel tbody tr.row-selected > td,
.opti-root .list-panel tbody tr.row-selected:hover > td {
    background: var(--accent) !important;
    color: #fff !important;
    font-weight: 700;
    box-shadow: none;
}

.opti-root .products-panel {
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding-top: 6px;
}

/* ---------- Galerie ---------- */

.opti-root .gallery-layout {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: auto;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
}

.opti-root .gallery-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    font-size: 0.86rem;
    color: var(--muted);
}

.opti-root .gallery-head strong {
    font-family: var(--font-mono);
    color: var(--ink);
}

.opti-root .gallery-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
    align-items: start;
}

.opti-root .gallery-card {
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface-2);
    cursor: pointer;
    user-select: none;
    transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s ease;
}

.opti-root .gallery-card:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
}

.opti-root .gallery-card.current {
    border-color: var(--accent);
    box-shadow: var(--ring);
}

.opti-root .gallery-meta {
    display: flex;
    justify-content: space-between;
    gap: 6px;
    margin-bottom: 8px;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--ink-2);
}

.opti-root .gallery-meta span:first-child {
    font-weight: 700;
    color: var(--ink);
}

.opti-root .gallery-svg {
    width: 100%;
    height: 240px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: var(--surface);
}

.opti-root .gallery-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.opti-root .gallery-fullscreen-backdrop {
    position: fixed;
    inset: 0;
    z-index: 4000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    background: color-mix(in srgb, var(--ink) 50%, transparent);
    backdrop-filter: blur(4px);
    animation: fadeIn .2s ease both;
}

.opti-root .gallery-fullscreen-panel {
    width: min(96vw, 1600px);
    height: min(94vh, 1100px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 18px;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    animation: modalIn .25s var(--ease) both;
}

.opti-root .gallery-fullscreen-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid var(--line);
    background: var(--surface-2);
    font-family: var(--font-mono);
    font-size: 0.86rem;
}

.opti-root .gallery-fullscreen-body {
    flex: 1;
    min-height: 0;
    padding: 10px;
}

.opti-root .gallery-fullscreen-svg {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    border: 1px solid var(--line);
    background:
        radial-gradient(circle, color-mix(in oklab, var(--line-strong) 80%, transparent) 1px, transparent 1.3px) 0 0 / 18px 18px,
        var(--surface-2);
}

/* ---------- Mobile ---------- */

@media (max-width: 640px) {
    .opti-root {
        overflow: auto;
    }

    .opti-root .desktop-title {
        display: none;
    }

    .opti-root .mobile-topbar {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 6px;
        margin-bottom: 8px;
        flex-shrink: 0;
    }

    .opti-root .mobile-topbar > button {
        width: 100%;
        min-width: 0;
        height: 42px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        padding: 0 6px;
        border-radius: 11px;
        font-size: 0.82rem;
        font-weight: 700;
        white-space: nowrap;
        cursor: pointer;
    }

    .opti-root .mobile-params-btn {
        border: 1px solid var(--line-strong);
        background: var(--surface);
        color: var(--ink-2);
    }

    .opti-root .mobile-params-btn.active {
        border-color: var(--accent);
        background: var(--accent-soft);
        color: var(--accent-ink);
    }

    .opti-root .mobile-top-run-btn {
        border: 1px solid var(--accent);
        background: var(--accent);
        color: #fff;
    }

    .opti-root .mobile-top-run-btn:disabled {
        opacity: 0.7;
    }

    .opti-root .run-btn-in-panel {
        display: none;
    }

    .opti-root .params-panel {
        display: none;
        padding: 10px;
        margin-bottom: 8px;
    }

    .opti-root .params-panel.params-open {
        display: block;
    }

    .opti-root .params-primary {
        gap: 12px;
    }

    .opti-root .params-secondary .meta:first-of-type {
        margin-left: 0;
    }

    .opti-root .panel-head {
        flex-direction: column;
        align-items: stretch;
    }

    .opti-root .opti-layout,
    .opti-root .layout {
        display: flex;
        flex-direction: column;
        gap: 8px;
        min-height: 0;
    }

    .opti-root .opti-left,
    .opti-root .left {
        min-width: unset;
        width: 100%;
        height: auto;
        flex-shrink: 0;
        display: none;
    }

    .opti-root .opti-left.produits-open,
    .opti-root .left.produits-open {
        display: flex;
    }

    .opti-root .left-split {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .opti-root .left-split .products-panel {
        order: 1;
        padding-top: 0;
    }

    .opti-root .left-split .list-panel {
        order: 2;
        height: 220px;
    }

    .opti-root .opti-right {
        display: flex;
        flex-direction: column;
        min-height: 280px;
        flex-shrink: 0;
    }

    .opti-root .result-spacer {
        display: none;
    }

    .opti-root .schema-wrap,
    .opti-root .right {
        min-height: 280px;
        width: 100%;
        flex-shrink: 0;
    }

    .opti-root .schema-svg {
        width: 100%;
    }

    .opti-root .splitter-vertical,
    .opti-root .splitter-horizontal {
        display: none;
    }

    .opti-root .nav-actions {
        flex-wrap: wrap;
        justify-content: center;
    }

    .opti-root .step-btn-run-mobile {
        display: inline-flex;
        width: 100%;
        order: 1;
    }

    .opti-root .step-btn-adjust {
        order: 2;
        flex: 1;
    }

    .opti-root .step-btn-print {
        width: 100%;
        margin-right: 0;
        order: 3;
    }
}

/* Pavé numérique mobile : le wrapper ne s'étire que lorsque le pavé est ouvert */
.opti-root .param-controls .mobile-numpad-wrapper:not(:has(.mobile-numpad)) {
    width: auto;
}