/* ── Cards ──────────────────────────────────────────────────── */
.card{background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius2);margin-bottom:6px;overflow:hidden}
.card-header{padding:8px 12px;display:flex;align-items:center;gap:8px;cursor:pointer;user-select:none}
.card-header:hover{background:var(--bg3)}
.card-chevron{margin-left:auto;color:var(--text3);transition:transform .2s;font-size:10px}
.card.open .card-chevron{transform:rotate(90deg)}
.card-title{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--text)}
.card-sub{font-size:10px;color:var(--text3);margin-left:auto;margin-right:8px}
.card-body{padding:10px 12px;border-top:1px solid var(--line);display:none}
.card.open .card-body{display:block}
.card-selected{border-color:var(--accent2)}

/* ── Type pill badges ───────────────────────────────────────── */
.pill{display:inline-block;padding:1px 7px;border-radius:2px;font-family:var(--mono);font-size:10px;font-weight:600;letter-spacing:.04em}
.pill-oh{background:var(--warn-dim);color:var(--warn);border:1px solid var(--warn-border)}
.pill-warn{background:var(--warn-dim);color:var(--warn);border:1px solid var(--warn-border)}
.pill-csg{background:var(--info-dim);color:var(--info);border:1px solid var(--info-border)}
.pill-cmt{background:var(--purple-dim);color:var(--purple);border:1px solid var(--purple-border)}
.pill-bit{background:var(--danger-dim);color:var(--danger);border:1px solid var(--danger-border)}
.pill-bha{background:var(--bg4);color:var(--text2);border:1px solid var(--line2)}
.pill-dp{background:var(--green-dim);color:var(--green);border:1px solid var(--green-border)}
.pill-hwdp{background:var(--indigo-dim);color:var(--indigo);border:1px solid var(--indigo-border)}
.pill-dc{background:var(--purple-dim);color:var(--purple);border:1px solid var(--purple-border)}
.pill-form{background:var(--indigo-dim);color:var(--indigo);border:1px solid var(--indigo-border)}
.pill-fluid{background:var(--info-dim);color:var(--info);border:1px solid var(--info-border)}

/* ── Form elements ───────────────────────────────────────────── */
.form-row{display:grid;gap:8px;margin-bottom:10px}
.form-row.cols-2{grid-template-columns:1fr 1fr}
.form-row.cols-3{grid-template-columns:1fr 1fr 1fr}
.form-row.cols-4{grid-template-columns:1fr 1fr 1fr 1fr}
.field{display:flex;flex-direction:column;gap:3px}
.field label{font-size:10px;color:var(--text3);text-transform:uppercase;letter-spacing:.05em;font-weight:500}
.field input,.field select{background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);color:var(--text);padding:5px 8px;width:100%;transition:border-color .15s}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent2);background:var(--bg4)}
input[type="checkbox"]{accent-color:var(--accent)}
.field select option{background:var(--bg3)}
.field .unit{font-size:10px;color:var(--text3);margin-top:1px}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--radius);border:1px solid;font-size:11px;font-weight:500;transition:all .15s;cursor:pointer;font-family:var(--sans)}
.btn-sm{padding:3px 9px;font-size:11px}
.btn-primary{background:var(--accent-dim);border-color:var(--accent2);color:var(--accent)}
.btn-primary:hover{background:var(--accent2)}
.btn-ghost{background:transparent;border-color:var(--line2);color:var(--text2)}
.btn-ghost:hover{background:var(--bg3);color:var(--text)}
.btn-danger{background:var(--danger-dim);border-color:var(--danger-border);color:var(--danger)}
.btn-danger:hover{background:var(--danger-border)}
.btn-warn{background:var(--warn-dim);border-color:var(--warn-border);color:var(--warn)}
.btn-icon{width:26px;height:26px;padding:0;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line2);border-radius:var(--radius);color:var(--text3);cursor:pointer;transition:all .15s}
.btn-icon:hover{background:var(--bg3);color:var(--text);border-color:var(--line2)}
.btn-icon svg{width:13px;height:13px}

/* ── Section label ───────────────────────────────────────────── */
.sec-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text3);margin-bottom:8px;padding-bottom:5px;border-bottom:1px solid var(--line)}

/* ── Data table ──────────────────────────────────────────────── */
.data-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:11px}
.data-table th{text-align:left;padding:5px 10px;color:var(--text3);font-weight:500;border-bottom:1px solid var(--line);font-size:10px;text-transform:uppercase;letter-spacing:.05em;background:var(--bg2);position:sticky;top:0;z-index:1}
.data-table td{padding:6px 10px;border-bottom:1px solid var(--line);color:var(--text)}
.data-table tr:hover td{background:var(--bg3)}
.data-table .num{text-align:right;color:var(--accent)}

/* ── Inline-editable table inputs ────────────────────────────── */
.data-table td input,.data-table td select{background:transparent;border:none;color:var(--text);padding:2px 4px;width:100%;font-family:var(--mono);font-size:11px;box-sizing:border-box}
.data-table td input:focus,.data-table td select:focus{outline:none;background:var(--bg4)}
.data-table td input.num,.data-table td.num input{text-align:right;color:var(--accent)}
.data-table td select{cursor:pointer;appearance:none;padding-right:14px}
.data-table td input:disabled{opacity:.3;cursor:default}
.btn-icon.needs-config{position:relative}
.btn-icon.needs-config::after{content:'';position:absolute;top:2px;right:2px;width:6px;height:6px;border-radius:50%;background:var(--warn)}

/* ── Inspect table (hydraulics debug) ────────────────────────── */
.inspect-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:10.5px}
.inspect-table th{text-align:left;padding:4px 8px;color:var(--text3);font-weight:500;border-bottom:1px solid var(--line);font-size:9px;text-transform:uppercase;letter-spacing:.04em;background:var(--bg3);white-space:nowrap;position:sticky;top:0}
.inspect-table td{padding:3px 8px;border-bottom:1px solid var(--line);color:var(--text);white-space:nowrap}
.inspect-table tr:hover td{background:var(--bg3)}
.inspect-table tr.inspect-turb td{background:rgba(255,170,50,.08)}
.inspect-table tr.inspect-turb:hover td{background:rgba(255,170,50,.15)}
.inspect-table tr.inspect-trans td{background:rgba(255,230,80,.06)}
.inspect-table tr.inspect-trans:hover td{background:rgba(255,230,80,.12)}

/* ── Wellbore schematic hover highlight ──────────────────────── */
#wellbore-svg g[data-sid]{transition:opacity .15s}
#wellbore-svg.sch-hover g[data-sid]{opacity:.4}
#wellbore-svg.sch-hover g[data-sid].sch-highlight{opacity:1}
#wellbore-svg.sch-hover g[data-sid].sch-highlight line{stroke:var(--accent)}
#wellbore-svg.sch-hover g[data-sid].sch-highlight rect:not([fill^="url"]){fill:var(--accent)}
#wellbore-svg.sch-hover g[data-sid].sch-highlight polygon{fill:var(--accent)}

/* ── Modal overlay ───────────────────────────────────────────── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;visibility:hidden;transition:opacity .2s,visibility 0s .2s}
.modal-overlay.open{opacity:1;pointer-events:all;visibility:visible;transition:opacity .2s,visibility 0s}
.modal{background:var(--bg2);border:1px solid var(--line2);border-radius:var(--radius2);width:540px;max-height:85vh;overflow-y:auto;box-shadow:0 24px 64px rgba(0,0,0,.6)}
.modal-wide{width:680px}
.modal-header{padding:14px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:var(--bg2);z-index:1}
.modal-header h2{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent)}
.modal-body{padding:16px}
.modal-footer{padding:12px 16px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px;position:sticky;bottom:0;background:var(--bg2)}

/* ── Wellbore schematic ──────────────────────────────────────── */
.schematic-wrap{background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius2);padding:12px;min-height:300px}

/* ── Divider rows ─────────────────────────────────────────────── */
.divider{height:1px;background:var(--line);margin:12px 0}

/* ── Alert / info banner ─────────────────────────────────────── */
.alert{padding:8px 12px;border-radius:var(--radius);font-size:11px;margin-bottom:10px}
.alert-info{background:var(--info-dim);border:1px solid var(--info-border);color:var(--info)}
.alert-warn{background:var(--warn-dim);border:1px solid var(--warn-border);color:var(--warn)}

/* ── Subsection header within panel-right ────────────────────── */
.sub-section{background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius2);padding:14px;margin-bottom:12px}
.sub-section-title{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--text2);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.sub-section-title .dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}
.dot-oh{background:var(--warn)}
.dot-csg{background:var(--info)}
.dot-cmt{background:var(--purple)}

/* ── Number stat row ─────────────────────────────────────────── */
.stat-row{display:flex;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.stat{background:var(--bg3);border:1px solid var(--line);border-radius:var(--radius);padding:8px 12px;min-width:100px}
.stat-val{font-family:var(--mono);font-size:16px;font-weight:600;color:var(--accent)}
.stat-lbl{font-size:10px;color:var(--text3);margin-top:2px}

/* ── Empty state ─────────────────────────────────────────────── */
.empty{text-align:center;padding:40px 20px;color:var(--text3)}
.empty-icon{font-size:32px;margin-bottom:8px;opacity:.4}
.empty p{font-size:12px}

/* ── Depth input top bar ─────────────────────────────────────── */
.depth-input{background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);color:var(--warn);font-family:var(--mono);font-size:12px;padding:3px 8px;width:90px;text-align:right}
.depth-input:focus{outline:none;border-color:var(--warn)}

/* ── Fann reading grid ───────────────────────────────────────── */
.fann-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}
.fann-label{font-size:10px;color:var(--text3);text-align:center;margin-bottom:2px}

/* ── Survey tab ──────────────────────────────────────────────── */
.survey-table-wrap{overflow-x:auto;overflow-y:auto;flex:1}
.survey-controls{padding:12px 14px;border-bottom:1px solid var(--line);flex-shrink:0}
.survey-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:10px}
.survey-stat{background:var(--bg3);border:1px solid var(--line);border-radius:var(--radius);padding:6px 10px}
.survey-stat .sv{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent)}
.survey-stat .sl{font-size:10px;color:var(--text3);margin-top:1px}
.sv-row-locked td{color:var(--text3) !important;background:var(--bg2) !important}
.sv-row-locked td.num{color:var(--text3) !important}
.sv-dls-warn td.dls-cell{color:var(--warn) !important;font-weight:600}
.sv-dls-danger td.dls-cell{color:var(--danger) !important;font-weight:600}
.import-preview-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:11px;margin-top:8px}
.import-preview-table th{padding:4px 8px;background:var(--bg3);border:1px solid var(--line2);color:var(--text3);font-size:10px;text-transform:uppercase}
.import-preview-table td{padding:4px 8px;border:1px solid var(--line);color:var(--text)}
.import-preview-table tr:hover td{background:var(--bg3)}
.col-map-select{background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);color:var(--text);padding:3px 6px;font-size:11px;font-family:var(--mono)}
.modal-xl{width:820px;max-width:95vw}
.import-col-map{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}

/* ── Simulator tab ──────────────────────────────────────── */
.sim-control-bar{flex-shrink:0;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--bg1);display:flex;align-items:stretch;gap:10px;flex-wrap:wrap}
.sim-widget{background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius2);padding:8px 18px;min-width:120px;display:flex;flex-direction:column;gap:2px;position:relative}
.sim-widget-label{font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text3);white-space:nowrap}
.sim-widget-val{font-family:var(--mono);font-size:20px;font-weight:600;color:var(--text);line-height:1.2}
.sim-widget-unit{font-size:10px;color:var(--text3);font-family:var(--mono)}
.sim-widget input[type="number"]{background:transparent;border:none;color:var(--text);font-family:var(--mono);font-size:20px;font-weight:600;padding:0;width:100%;line-height:1.2;outline:none}
.sim-widget input[type="number"]:focus{color:var(--accent)}
.sim-widget input[type="number"]::-webkit-inner-spin-button{display:none}
.sim-widget.computed{border-color:var(--line);background:var(--bg1)}
.sim-widget.computed .sim-widget-val{color:var(--text2)}
.sim-widget.active-mode{border-color:var(--accent2);box-shadow:0 0 0 1px var(--accent-dim)}

/* Widget side tab button — tapered shape on left edge */
.widget-tab-btn{position:absolute;top:50%;left:1px;transform:translateY(-50%);height:35%;width:13px;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;background:var(--text2);color:var(--bg);clip-path:polygon(0 0,100% 12%,100% 88%,0 100%);border-radius:0;transition:background .15s}
.widget-tab-btn:hover{background:var(--text3)}
.widget-tab-btn svg{flex-shrink:0}

/* Widget preset popup menu — reusable for flow rate, bit depth, etc. */
.widget-preset-menu{position:absolute;top:67%;left:16px;z-index:20;background:var(--bg2);border:1px solid var(--line2);border-radius:var(--radius2);padding:4px 0;min-width:180px;box-shadow:0 4px 12px rgba(0,0,0,.4);display:none;font-family:var(--mono);font-size:11px}
.widget-preset-menu.open{display:block}
.widget-preset-header{padding:4px 10px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.widget-preset-item{padding:5px 10px;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:8px;white-space:nowrap}
.widget-preset-item:hover{background:var(--bg3)}
.widget-preset-item .preset-val{flex:1;font-weight:500}
.widget-preset-item .preset-unit{font-size:9px;color:var(--text3)}
.widget-preset-item .preset-actions{display:flex;gap:2px;opacity:0;transition:opacity .1s}
.widget-preset-item:hover .preset-actions{opacity:1}
.widget-preset-item .preset-actions button{border:none;background:transparent;color:var(--text3);cursor:pointer;padding:2px;display:flex;align-items:center}
.widget-preset-item .preset-actions button:hover{color:var(--text)}
.widget-preset-edit-row{padding:4px 10px;display:flex;align-items:center;gap:4px}
.widget-preset-edit-row input{width:70px;background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);color:var(--text);padding:3px 6px;font-family:var(--mono);font-size:11px}
.widget-preset-edit-row input:focus{outline:none;border-color:var(--accent2)}
.widget-preset-divider{padding:4px 10px;font-size:9px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.05em;border-top:1px solid var(--line);margin-top:2px}

/* ROP widget — gear button */
.cuttings-gear-btn.btn-icon{width:18px;height:18px;border:none;padding:0;background:transparent;color:var(--text3)}
.cuttings-gear-btn.btn-icon:hover{background:var(--hover-overlay-strong);color:var(--text)}
.cuttings-gear-btn.btn-icon svg{width:12px;height:12px}

/* Anchor widget — label row + pick button */
.sim-widget-label-row{display:flex;align-items:center;justify-content:space-between;width:100%}
.anchor-pick-btn.btn-icon{width:22px;height:22px;border:none;padding:0;background:transparent;color:var(--text3)}
.anchor-pick-btn.btn-icon:hover{background:var(--hover-overlay-strong);color:var(--text)}
.anchor-pick-btn.btn-icon svg{width:16px;height:16px}

/* ECD lock toggle */
.sim-lock-btn.btn-icon{width:22px;height:22px;border:none;padding:0;background:transparent;color:var(--text3);cursor:pointer}
.sim-lock-btn.btn-icon:hover{background:var(--hover-overlay-strong);color:var(--text)}
.sim-lock-btn.btn-icon svg{width:16px;height:16px}

/* Anchor quick-select menu */
.anchor-menu{position:absolute;top:28px;right:0;z-index:20;background:var(--menu-bg);border:1px solid var(--line);border-radius:6px;padding:4px 0;min-width:220px;box-shadow:0 4px 12px rgba(0,0,0,.4);display:none;font-family:var(--mono);font-size:11px}
.anchor-menu.open{display:block}
.anchor-menu-item{padding:6px 12px;cursor:pointer;color:var(--text2);display:flex;align-items:baseline;justify-content:space-between;gap:12px;white-space:nowrap}
.anchor-menu-item:hover{background:var(--hover-overlay)}
.anchor-menu-item .anchor-item-name{font-size:11px;color:var(--text);font-weight:600}
.anchor-menu-item .anchor-item-depths{font-size:9px;color:var(--text3)}
.anchor-menu-empty{padding:8px 12px;color:var(--text3);font-size:10px;font-style:italic}

/* Anchor widget — dual field */
.sim-anchor-fields{display:flex;gap:10px;align-items:baseline}
.sim-anchor-fields .sim-anchor-field{display:flex;flex-direction:column;gap:1px}
.sim-anchor-fields .sim-anchor-field input{background:transparent;border:none;color:var(--text);font-family:var(--mono);font-size:20px;font-weight:600;padding:0;width:80px;line-height:1.2;outline:none}
.sim-anchor-fields .sim-anchor-field input:focus{color:var(--accent)}
.sim-anchor-fields .sim-anchor-field input::-webkit-inner-spin-button{display:none}
.sim-anchor-fields .sim-anchor-sub{font-size:9px;color:var(--text3);font-family:var(--mono)}

/* Mode toggle */
.sim-mode-toggle{display:flex;background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);overflow:hidden;align-self:center}
.sim-mode-btn{border:none;padding:6px 14px;font-size:10px;font-family:var(--mono);font-weight:600;background:transparent;color:var(--text3);cursor:pointer;transition:all .15s;white-space:nowrap}
.sim-mode-btn.active{background:var(--accent);color:var(--bg)}
/* Drill/Trip card */
.sim-trip-toggle-group{display:inline-flex;background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);overflow:hidden}
.sim-trip-toggle{border:none;padding:2px 5px;font:600 8px/1 var(--mono);text-transform:uppercase;background:transparent;color:var(--text3);cursor:pointer;transition:all .15s}
.sim-trip-toggle.active{background:var(--accent);color:var(--bg)}

/* Toggle switch */
.toggle-switch{position:relative;display:inline-block;width:30px;height:16px;flex-shrink:0}
.toggle-switch input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;cursor:pointer;inset:0;background:var(--bg3);border:1px solid var(--line2);border-radius:8px;transition:all .2s}
.toggle-slider::before{content:'';position:absolute;height:10px;width:10px;left:2px;bottom:2px;background:var(--text3);border-radius:50%;transition:all .2s}
.toggle-switch input:checked+.toggle-slider{background:var(--accent-dim);border-color:var(--accent2)}
.toggle-switch input:checked+.toggle-slider::before{transform:translateX(14px);background:var(--accent)}

/* Summary panel */
.sim-summary-group{margin-bottom:14px}
.sim-summary-title{font-size:11px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.05em;padding-bottom:6px;border-bottom:1px solid var(--line);margin-bottom:4px}
.sim-summary-table{width:100%;border-collapse:collapse}
.sim-summary-table th{font-size:9px;text-transform:uppercase;letter-spacing:.04em;color:var(--text3);font-weight:500;padding:3px 4px;text-align:right;border-bottom:1px solid var(--line)}
.sim-summary-table th:first-child{text-align:left}
.sim-summary-table td{padding:3px 4px;color:var(--text2);text-align:right;border-bottom:1px solid transparent}
.sim-summary-table td:first-child{text-align:left;color:var(--text3)}
.sim-summary-table tr:hover td{background:var(--hover-overlay)}
.sim-summary-sep td{border-top:1px solid var(--line)}
.sim-summary-total td{border-top:1px solid var(--line);font-weight:600;color:var(--text)}

/* Schematic box */
.sim-schematic-box{min-width:252px;max-width:378px;flex:1 1 288px;background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius2);overflow:hidden;margin:12px;margin-right:0;position:relative}

/* Sim scale gear menu */
.sim-scale-gear{position:absolute;top:4px;right:4px;z-index:10;width:22px;height:22px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:4px;color:var(--text3);font-size:14px;transition:background .15s,color .15s}
.sim-scale-gear:hover{background:var(--hover-overlay-strong);color:var(--text1)}
.sim-scale-menu{position:absolute;top:28px;right:4px;z-index:20;background:var(--menu-bg);border:1px solid var(--line);border-radius:6px;padding:4px 0;min-width:130px;box-shadow:0 4px 12px rgba(0,0,0,.4);display:none;font-family:var(--mono);font-size:11px}
.sim-scale-menu.open{display:block}
.sim-scale-menu-item{padding:5px 12px;cursor:pointer;color:var(--text2);display:flex;align-items:center;gap:6px;white-space:nowrap}
.sim-scale-menu-item:hover{background:var(--hover-overlay)}
.sim-scale-menu-item.active{color:var(--accent)}
.sim-scale-menu-item .dot{width:6px;height:6px;border-radius:50%;border:1px solid var(--text3);flex-shrink:0}
.sim-scale-menu-item.active .dot{background:var(--accent);border-color:var(--accent)}

/* Segmented mode toggle — reusable binary/ternary "switch" inside sub-panels.
 * Different UX from `.tab-bar` (which is for page navigation): this one is a
 * compact pill that visually represents a setting choice (ECD vs SBP, Table
 * vs Charts, etc.). Used inside the Advanced sub-panels. */
.sim-chart-toggle{display:inline-flex;background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);overflow:hidden}
.sim-chart-toggle-btn{border:none;border-left:1px solid var(--line2);padding:3px 10px;font-size:9px;font-family:var(--mono);font-weight:600;background:transparent;color:var(--text3);cursor:pointer;transition:all .15s;white-space:nowrap}
.sim-chart-toggle-btn:first-child{border-left:none}
.sim-chart-toggle-btn:hover{color:var(--text2)}
.sim-chart-toggle-btn.active{background:var(--accent);color:var(--bg);border-left-color:transparent}
.sim-chart-toggle-btn.active + .sim-chart-toggle-btn{border-left-color:transparent}
.sim-chart-toggle-btn:disabled{opacity:.35;cursor:not-allowed}

/* Plotly modebar overrides */
.modebar-group{background:transparent !important}

/* ── Animated underline tab bar ───────────────────────────────────
 * Used app-wide for horizontal navigation: project list filters
 * (All/My/Team), simulator chart-mode toggle (ECD/Temperature),
 * advanced sub-tabs (Pump Schedule/Mud Cap/Slug). Click handlers
 * elsewhere only need to toggle `.active` on the chosen tab — the
 * underline animation is driven by /js/tab-bar.js via a
 * MutationObserver, so existing logic doesn't need to know about
 * the underline element.
 *
 * Markup contract:
 *   <div class="tab-bar">
 *     <button class="tab-bar-tab active">…</button>
 *     <button class="tab-bar-tab">…</button>
 *     <span class="tab-bar-underline"></span>
 *   </div>
 */
.tab-bar{
  position:relative;
  display:flex;
  align-items:center;
  gap:24px;
  border-bottom:1px solid var(--line1);
  margin-bottom:16px;
}
.tab-bar-tab{
  background:none;
  border:0;
  font-family:inherit;
  cursor:pointer;
  padding:10px 0;
  font-size:13px;
  color:var(--muted);
  transition:color .15s;
  white-space:nowrap;
}
.tab-bar-tab:hover:not(:disabled){color:var(--text2)}
.tab-bar-tab.active{color:var(--text)}
.tab-bar-tab:disabled{opacity:.4;cursor:default}
.tab-bar-tab .tab-count{color:var(--text3);font-variant-numeric:tabular-nums;margin-left:4px}
.tab-bar-tab.active .tab-count{color:var(--muted)}

.tab-bar-underline{
  position:absolute;
  bottom:-1px;
  left:0;
  height:2px;
  background:var(--accent);
  width:0;
  pointer-events:none;
}
/* `.ready` is added by tab-bar.js after the first synchronous position
 * is set, so the underline doesn't animate from {left:0,width:0} on
 * initial paint. */
.tab-bar-underline.ready{
  transition:left .3s ease, width .3s ease;
}

/* Compact modifier — for tight UI areas like the chart-mode toggle
 * floating over the simulator's plot canvas. */
.tab-bar-compact{gap:16px}
.tab-bar-compact .tab-bar-tab{
  padding:6px 0;
  font-size:11px;
  font-family:var(--mono);
  font-weight:600;
}

/* Wrapper modifier — used when the tab bar lives inside a chrome strip
 * (e.g., the Advanced tab's sub-nav row). Drops the bar's own bottom
 * margin since the parent strip already provides spacing. */
.tab-bar-strip{
  padding:8px 16px 0;
  background:var(--bg1);
  flex-shrink:0;
  margin-bottom:0;
}

/* ── Advanced tab sub-panels ────────────────────────────────────── */
.adv-subpanel{display:none;flex:1;overflow:hidden}
.adv-subpanel.active{display:flex}

/* ── Advanced WBS panel (reusable: Pump Schedule, Mud Cap, Slug) ── */
.adv-wbs-panel{width:200px;flex-shrink:0;border-left:1px solid var(--line);background:var(--bg2);display:flex;overflow:hidden;position:relative}

/* ── Pump Schedule control bar ───────────────────────────────── */
.ps-control-bar{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--line);background:var(--bg1);flex-shrink:0}
.ps-control-spacer{flex:1}
.ps-summary{display:flex;align-items:center;font-family:var(--mono);font-size:11px}
.ps-summary-label{color:var(--text3);text-transform:uppercase;letter-spacing:.05em;font-size:10px}
.ps-summary-value{color:var(--accent);margin-left:4px;font-size:11px}

/* ── Pump Schedule unified table ────────────────────────────── */
.ps-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:11px;table-layout:fixed}
.ps-table thead th{text-align:left;padding:5px 6px;color:var(--text3);font-weight:500;font-size:10px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--line);background:var(--bg2);position:sticky;top:0;z-index:1;white-space:nowrap}
.ps-table tbody tr{border-bottom:1px solid var(--line)}
tr.ps-row-past td{background:var(--bg3)}
.ps-table td{padding:4px 6px;vertical-align:middle}
.ps-table input,.ps-table select{width:100%;background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);color:var(--text);padding:4px 6px;font-family:var(--mono);font-size:11px;box-sizing:border-box}
.ps-table input:focus,.ps-table select:focus{outline:none;border-color:var(--accent2);background:var(--bg4)}
.ps-table input:disabled{opacity:.35;cursor:not-allowed;background:var(--bg2)}
.ps-table .num{text-align:right}

/* Column widths */
.ps-col-color{width:28px}
.ps-col-num{width:24px;text-align:center;color:var(--text3)}
.ps-col-fluid{width:180px}
.ps-col-rate{width:85px}
.ps-col-vol{width:85px}
.ps-col-dur{width:75px}
.ps-col-tl{padding:4px 0 !important} /* timeline: no horizontal padding so bars fill edge-to-edge */
.ps-col-tl-head{position:relative;overflow:visible;padding-left:0 !important;padding-right:0 !important}
.ps-tl-scale-tick{position:absolute;bottom:4px;font-size:9px;color:var(--text3);white-space:nowrap;font-weight:400;letter-spacing:0}
.ps-tl-scale-pipe{color:var(--line2);font-weight:300}
.ps-col-anchor{width:100px}
.ps-col-ecd{width:95px}
.ps-col-sbp{width:80px}
.ps-col-act{width:28px;text-align:center}

/* Stage color swatch */
.ps-stage-color{width:12px;height:12px;border-radius:2px}
.ps-duration-val{font-family:var(--mono);font-size:11px;color:var(--accent);white-space:nowrap}
.ps-stage-del{background:none;border:none;cursor:pointer;padding:4px;color:var(--text3)}
.ps-stage-del:hover{color:var(--danger)}

/* Timeline bar inside table cell */
.ps-tl-cell{position:relative;height:34px;background:var(--bg1);border-radius:3px;overflow:hidden}
.ps-tl-bar{position:absolute;top:2px;bottom:2px;border-radius:3px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-width:0}
.ps-tl-bar-label{font-family:var(--mono);font-size:10px;color:rgba(0,0,0,.7);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 6px}
.ps-tl-bar-shutdown{background-image:repeating-linear-gradient(135deg,transparent,transparent 4px,rgba(255,255,255,.12) 4px,rgba(255,255,255,.12) 8px) !important}
.ps-tl-bar-shutdown .ps-tl-bar-label{color:rgba(255,255,255,.7)}

/* ── Pump Schedule scrubber ──────────────────────────────────── */
.ps-scrub-line{position:absolute;top:0;width:0;border-left:1px dashed var(--accent);pointer-events:none;z-index:5;opacity:.7}
.ps-scrub-wrap{border-top:1px solid var(--line);padding:0;flex-shrink:0;position:sticky;top:0;z-index:5;background:var(--bg1)}
.ps-scrub-track{position:relative;height:24px;background:var(--bg1);cursor:pointer;margin:0}
.ps-scrub-handle{position:absolute;top:0;width:12px;height:24px;background:var(--accent);border-radius:3px;cursor:grab;transform:translateX(-50%);z-index:2}
.ps-scrub-handle:active{cursor:grabbing}
.ps-scrub-handle::after{content:'';position:absolute;left:50%;top:6px;bottom:6px;width:1px;margin-left:-2px;background:rgba(0,0,0,.3);box-shadow:2px 0 0 rgba(0,0,0,.3),4px 0 0 rgba(0,0,0,.3)}

/* ── Mud Cap tab ─────────────────────────────────────────────── */
.mc-section{padding:12px 16px}
.mc-section-header{font-family:var(--mono);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text2);margin-bottom:10px}
.mc-cards{display:flex;gap:12px;flex-wrap:wrap}
.mc-card{border:1px solid var(--line);border-radius:8px;padding:12px 16px;flex:1;min-width:280px;background:var(--bg1);transition:opacity .2s;display:flex;flex-direction:column}
.mc-card-inactive{opacity:0.35;pointer-events:none}
.mc-card-footer{display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:10px}
.mc-step-header{font-family:var(--mono);font-size:10px;font-weight:500;color:var(--text3);letter-spacing:.04em;margin-bottom:8px;padding-bottom:4px;border-bottom:1px solid var(--line)}

/* Chase helper buttons (text-style, stacked) */
.mc-chase-helpers{display:flex;flex-direction:column;gap:2px;padding-top:2px}
.mc-chase-row{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:10px}
.mc-chase-row .mc-chase-btn{background:none;border:none;padding:2px 0;font-family:var(--mono);font-size:10px;color:var(--accent);cursor:pointer;text-align:left;white-space:nowrap}
.mc-chase-row .mc-chase-btn:hover{color:var(--text);text-decoration:underline}
.mc-form{display:flex;flex-direction:column;gap:8px;max-width:360px}
.mc-field{display:flex;align-items:center;gap:8px}
.mc-label{font-family:var(--mono);font-size:10px;color:var(--text3);white-space:nowrap;min-width:155px;text-align:right}
.mc-unit{color:var(--text3);opacity:.7}
.mc-input{flex:1;max-width:140px;background:var(--bg3);border:1px solid var(--line2);border-radius:var(--radius);color:var(--text);padding:4px 8px;font-family:var(--mono);font-size:11px;box-sizing:border-box}
.mc-input:focus{outline:none;border-color:var(--accent2);background:var(--bg4)}
.mc-unit-suffix{font-family:var(--mono);font-size:10px;color:var(--text3);white-space:nowrap;min-width:24px}
.mc-status{font-family:var(--mono);font-size:10px;margin-left:8px}

/* ── Running indicator ───────────────────────────────────────────────────────
 * Apply `.is-running` to any status / progress text element to render a spinner
 * before the message text. Single style block here so a future swap (different
 * animation, dot pattern, SVG spinner, etc.) is one CSS edit — call sites just
 * toggle the class via `setRunning` / `clearRunning` in ui-status.js.
 */
.is-running { position:relative; padding-left:18px; color:var(--text2); }
.is-running::before {
  content:''; position:absolute; left:0; top:50%; margin-top:-6px;
  width:12px; height:12px; border-radius:50%;
  border:2px solid var(--line2); border-top-color:var(--accent);
  animation:wellsim-spin 0.7s linear infinite;
}
@keyframes wellsim-spin { to { transform:rotate(360deg); } }

/* ── Solving overlay ─────────────────────────────────────────────────────────
 * Adds a dim+blur overlay with a centered larger spinner on top of any
 * container while a calculation is in flight. Used today on the ECD chart
 * during /api/simulate solves; reusable on any container that should feel
 * "working" while async work runs.
 *
 * Fade-in is delayed 200ms so solves that complete quickly never flash the
 * overlay. When the class is removed, the pseudo-elements simply vanish —
 * pseudo-element destruction doesn't run a transition, so removal is instant.
 *
 * Toggle via setSolving(el, true|false) in ui-status.js.
 */
.is-solving { position:relative; }
.is-solving::before {
  content:''; position:absolute; inset:0;
  background:rgba(0,0,0,0.28);
  backdrop-filter:blur(1px);
  -webkit-backdrop-filter:blur(1px);
  z-index:100;
  pointer-events:none;
  border-radius:inherit;
  opacity:0;
  animation:solving-fade 0.18s ease 0.2s forwards;
}
.is-solving::after {
  content:''; position:absolute;
  top:50%; left:50%;
  width:48px; height:48px;
  margin-top:-24px; margin-left:-24px;
  border:4px solid var(--line2);
  border-top-color:var(--accent);
  border-radius:50%;
  z-index:101;
  pointer-events:none;
  opacity:0;
  animation:
    solving-fade 0.18s ease 0.2s forwards,
    wellsim-spin 0.8s linear 0.2s infinite;
}
@keyframes solving-fade { to { opacity:1; } }

/* ── Global API progress bar ─────────────────────────────────────────────────
 * Indeterminate "sweep" bar mounted inside .banner on the well-editor page.
 * Driven by public/js/api-progress.js, which monkey-patches fetch and toggles
 * #api-progress-bar.is-active while any /api/* call is in flight.
 */
.banner { position:relative; }   /* anchor for #api-progress-bar (does not affect existing layout) */
#api-progress-bar {
  position:absolute;
  left:0; right:0;
  bottom:-1px;             /* sits on top of .banner's border-bottom */
  height:5px;
  overflow:hidden;
  pointer-events:none;
  opacity:0;
  transition:opacity 0.18s ease;
  z-index:21;              /* one above .banner's z-index:20 */
}
#api-progress-bar.is-active { opacity:1; }
#api-progress-bar::before {
  content:'';
  position:absolute;
  top:0; bottom:0;
  left:0;
  width:30%;
  background:linear-gradient(90deg, transparent, var(--accent), transparent);
  /* Default position: stripe shifted off-screen left by its own width.
     Animating `transform` (instead of `left`) runs on the GPU compositor
     thread — the sweep stays smooth even while the main thread is busy
     with a solve or save. */
  transform:translateX(-100%);
  will-change:transform;
}
/* Animation only runs while .is-active is present, so each new burst of
   API activity restarts the sweep from the beginning rather than
   continuing wherever the previous (silent) cycle happened to be. */
#api-progress-bar.is-active::before {
  animation:api-progress-slide 1.2s linear infinite;
}
/* Stripe (30% wide) sweeps from off-screen left to off-screen right.
   -100% = stripe right edge at bar's left edge; 333.33% = stripe left
   edge at bar's right edge. Total travel: 1.3× bar width. */
@keyframes api-progress-slide {
  from { transform:translateX(-100%); }
  to   { transform:translateX(333.33%); }
}

.mc-results-col{min-width:180px;display:flex;flex-direction:column;gap:4px;padding:2px 0 0 16px;margin-left:auto;border-left:1px solid var(--line)}
.mc-results-row{display:flex;justify-content:space-between;padding:2px 0;font-family:var(--mono);font-size:11px}
.mc-results-row .mc-rlabel{color:var(--text3)}
.mc-results-row .mc-rvalue{color:var(--text);font-weight:500}
.mc-results-row .mc-rvalue.mc-target{color:var(--accent)}
.mc-results-row .mc-rvalue.mc-empty{color:var(--text3);opacity:0.5}
.mc-results-divider{border-top:1px solid var(--line);margin:4px 0}

/* Composition popup button & badge */
.mc-comp-btn{background:none;border:1px solid var(--line2);border-radius:var(--radius);width:24px;height:24px;padding:0;cursor:pointer;color:var(--text3);display:flex;align-items:center;justify-content:center;transition:all .15s;flex-shrink:0}
.mc-comp-btn:hover{border-color:var(--accent2);color:var(--accent)}

/* Composition popup */
.mc-comp-popup{position:absolute;top:100%;left:0;margin-top:4px;background:var(--bg2);border:1px solid var(--line2);border-radius:var(--radius);padding:12px 16px;z-index:20;width:240px;box-shadow:0 4px 16px rgba(0,0,0,.35)}
.mc-comp-popup-title{font-family:var(--mono);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text2);margin-bottom:10px;padding-bottom:6px;border-bottom:1px solid var(--line)}
.mc-comp-popup-row{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:8px;margin-bottom:6px}
.mc-comp-popup-row label{font-family:var(--mono);font-size:10px;color:var(--text3);white-space:nowrap;text-align:left}
.mc-comp-popup-row .mc-input{justify-self:end}

/* ── Trip In Step 2 — bite rows ─────────────────────────────── */
.ti-bite-wrap{display:flex;align-items:center;gap:6px;flex-wrap:nowrap;padding:4px 0}
.ti-bite-wrap + .ti-bite-wrap{border-top:1px solid var(--line)}
.ti-bite-wrap .btn,.ti-bite-wrap .btn-icon{white-space:nowrap;flex-shrink:0}
.ti-bite-row{display:inline-flex;align-items:center;gap:8px;flex-shrink:0}
.ti-bite-num{font-family:var(--mono);font-size:10px;font-weight:600;color:var(--text2);min-width:48px;letter-spacing:.04em;white-space:nowrap}
.ti-bite-actions{display:flex;align-items:center;gap:0;flex-shrink:0;margin-left:10px}
.ti-bite-ecd{font-family:var(--mono);font-size:10px;font-weight:600;color:var(--accent);min-width:70px;text-align:right;white-space:nowrap;padding-left:8px}
.ti-bite-ecd-empty{color:var(--text3);opacity:0.5;font-weight:400}

/* ── Pump Schedule results table ─────────────────────────────── */