/* Kalkulator Volume Struktur — style halaman (melengkapi main.css) */
.calc-layout { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(0,1fr); grid-template-areas: "form v3d" "result v3d"; gap: 22px; align-items: start; }
#panelForm { grid-area: form; } #panelResult { grid-area: result; } #panel3d { grid-area: v3d; position: sticky; top: 84px; }
.calc-layout > * { min-width: 0; } /* cegah grid child melebar ke max-content (overflow mobile) */
@media (max-width: 900px) { .calc-layout { grid-template-columns: 1fr; grid-template-areas: "form" "v3d" "result"; } #panel3d { position: static; } }

.calc-field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 10px; }
.calc-field label { font-size: .8rem; color: var(--muted); font-weight: 500; }
.calc-input, .calc-select { background: var(--bg-2); border: 1px solid var(--border); color: var(--text); border-radius: var(--radius-sm); padding: 9px 11px; font-family: var(--font-technical); font-size: .9rem; width: 100%; }
.calc-input:focus, .calc-select:focus { outline: none; border-color: var(--primary); box-shadow: var(--ring); }
#dimFields, .calc-row2, .calc-row3, #rebarInputs { display: grid; gap: 10px; }
#dimFields, .calc-row3 { grid-template-columns: 1fr 1fr 1fr; } .calc-row2, #rebarInputs { grid-template-columns: 1fr 1fr; }

.fx-box { background: rgba(34,211,238,.06); border: 1px solid rgba(34,211,238,.22); border-radius: var(--radius-sm); padding: 9px 12px; margin: 8px 0 4px; }
.fx-box .fx-sym { display: block; font-family: var(--font-technical); font-size: .82rem; color: var(--accent); font-weight: 600; }
.fx-box .fx-sub { display: block; font-family: var(--font-technical); font-size: .82rem; color: var(--text); margin-top: 3px; }
.valid-msg { color: #fca5a5; font-size: .82rem; margin: 6px 0 0; }

.items-table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: .86rem; }
.items-table th, .items-table td { text-align: left; padding: 7px 6px; border-bottom: 1px solid var(--border); }
.items-table th { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; font-family: var(--font-technical); }
.items-table td.num, .items-table th.num { text-align: right; font-family: var(--font-technical); }
.items-table td.acts { text-align: right; white-space: nowrap; }
.ic-btn { background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--muted); border-radius: 6px; width: 26px; height: 26px; cursor: pointer; margin-left: 3px; font-size: .85rem; }
.ic-btn:hover { color: var(--text); border-color: var(--primary); }
.ic-btn.del { background: rgba(248,113,113,.12); border-color: rgba(248,113,113,.3); color: #fca5a5; }

.result-big { font-size: 2rem; font-weight: 700; color: var(--primary-2); font-family: var(--font-technical); }
.res-row { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: .9rem; }
.res-row b { color: var(--text); font-family: var(--font-technical); }
.empty-hint { color: var(--muted); font-size: .86rem; padding: 12px 0; }

.export-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.export-grid .dk-btn, .export-grid .btn { width: 100%; }
.save-status { font-size: .76rem; color: var(--muted); margin-top: 8px; text-align: center; font-family: var(--font-technical); }

.panel3d-canvaswrap { position: relative; width: 100%; height: 480px; background: #08111F; border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
@media (max-width: 900px) { .panel3d-canvaswrap { height: 400px; } }
#canvas3d { width: 100%; height: 100%; display: block; touch-action: none; }
.c3d-label { font-family: var(--font-technical); font-size: 11px; color: #08111F; background: var(--accent); padding: 1px 6px; border-radius: 4px; white-space: nowrap; font-weight: 600; }
.c3d-fallback { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 20px; }
.c3d-controls { display: flex; gap: 8px; margin-top: 10px; overflow-x: auto; padding-bottom: 4px; }
.c3d-controls button { flex-shrink: 0; }
.c3d-toggles { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px; font-size: .82rem; }
.c3d-toggles label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; color: var(--muted); }
.c3d-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 12px; font-size: .78rem; color: var(--muted); font-family: var(--font-technical); }
.c3d-legend span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }

/* Segmented control (metode) */
.seg { display: flex; width: 100%; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.seg-btn { flex: 1 1 0; background: var(--bg-2); border: none; color: var(--muted); padding: 9px 12px; font-size: .86rem; font-weight: 600; cursor: pointer; font-family: inherit; transition: background .12s, color .12s; }
.seg-btn + .seg-btn { border-left: 1px solid var(--border); }
.seg-btn:hover { color: var(--text); }
.seg-btn.active { background: var(--primary); color: #fff; }
.seg-btn:focus-visible, .recap-tab:focus-visible, .ic-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.seg-hint { font-size: .76rem; color: var(--muted); margin: 6px 0 0; }

/* Manajer proyek */
.proj-bar { margin-bottom: 18px; padding: 12px 16px; }
.proj-bar-main { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.proj-lbl { font-size: .78rem; color: var(--muted); font-weight: 600; }
.proj-bar #projSel { width: auto; min-width: 200px; max-width: 100%; flex: 1 1 220px; }
.proj-status { font-size: .78rem; color: var(--muted); margin: 8px 0 0; font-family: var(--font-technical); min-height: 1em; }
.proj-status.ok { color: var(--success); }
@media (max-width: 560px) { .proj-bar #projSel { flex-basis: 100%; } .proj-bar-main .btn-sm, .proj-bar-main .dk-btn { flex: 1 1 auto; } }

/* Recap tabs */
.recap-tabs { display: flex; flex-wrap: nowrap; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 14px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.recap-tab { flex: 0 0 auto; background: transparent; border: none; color: var(--muted); padding: 8px 12px; font-size: .84rem; font-weight: 600; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; font-family: inherit; }
.recap-tab:hover { color: var(--text); }
.recap-tab.active { color: var(--primary-2); border-bottom-color: var(--primary); }
.recap-pane { display: none; }
.recap-pane.active { display: block; }
.recap-table { width: 100%; border-collapse: collapse; font-size: .84rem; }
.recap-table th, .recap-table td { padding: 6px 6px; border-bottom: 1px solid var(--border); text-align: left; }
.recap-table th { color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .04em; font-family: var(--font-technical); }
.recap-table td.num, .recap-table th.num { text-align: right; font-family: var(--font-technical); white-space: nowrap; }
.recap-table tr.total td { font-weight: 700; color: var(--text); border-top: 2px solid var(--border); }
.recap-tablewrap { overflow-x: auto; }
.recap-kv { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px dashed var(--border); font-size: .88rem; }
.recap-kv b { font-family: var(--font-technical); color: var(--text); text-align: right; }

.asm-h { font-size: .95rem; margin: 14px 0 8px; color: var(--accent); }
.asm-sub { font-size: .82rem; margin: 12px 0 6px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
details.asm { border: 1px solid var(--border); border-radius: var(--radius-md); padding: 4px 16px; margin-top: 18px; }
details.asm summary { cursor: pointer; font-weight: 600; padding: 10px 0; }

.calc-content { margin-top: 44px; }
.calc-content .dk-panel + .dk-panel { margin-top: 18px; }
.faq-item { border-bottom: 1px solid var(--border); padding: 12px 0; }
.faq-item summary { cursor: pointer; font-weight: 600; }
.faq-item p { color: var(--muted); margin-top: 8px; font-size: .92rem; }

/* Print */
@media print {
  .dk-nav, .dk-footer, .modal-overlay, #panel3d, .export-grid, details.asm, .skip-link, .c3d-controls, .breadcrumb, .save-status, .calc-content { display: none !important; }
  body { background: #fff !important; color: #000 !important; }
  .dk-panel, #panelResult, #panelForm { border: 1px solid #ccc; background: #fff !important; color: #000; break-inside: avoid; }
  .calc-layout { display: block; }
  .items-table th, .res-row, .result-big, h1, h2 { color: #000 !important; }
  .print-only { display: block !important; }
}
.print-only { display: none; }