/* =====================================================================
   Plumbing Calculator — shared styles (every page loads this)
   Breakpoints (mobile first):
     phone     < 600px      (small-phone tweaks < 360px)
     tablet    600–1023px
     desktop   ≥ 1024px
   Header shows text links from 768px; below that they live in the menu.
   ===================================================================== */
:root{
  --paper:#E9E7DE; --paper-raised:#F3F1E9; --ink:#1B2023; --ink-soft:#4B5257;
  --line:#C7C3B6; --line-strong:#9B968A; --copper:#A85A2A; --copper-ink:#6E3A19;
  --steel:#3E5C76; --menu-orange:#E0763A; --menu-orange-hover:#C9632B;
  --gutter:16px;            /* page side margin */
  --header-h:60px;          /* sticky header height */
  --tap:44px;               /* minimum touch target */
  --page-max:1180px;        /* widest content column (pages may override) */
}
@media (min-width:600px){ :root{ --gutter:24px; --header-h:64px; } }
@media (min-width:1024px){ :root{ --gutter:32px; --header-h:68px; } }

html{ -webkit-text-size-adjust:100%; text-size-adjust:100%; scroll-padding-top:calc(var(--header-h) + 12px); }
body{ overflow-x:hidden; }
body.pc-lock{ overflow:hidden; }
img, svg{ max-width:100%; }

/* ---------------- header ---------------- */
.pc-header{
  position:sticky; top:0; z-index:40;
  background:rgba(233,231,222,0.94);
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line-strong);
}
.pc-header-inner{
  max-width:var(--page-max); margin:0 auto;
  height:var(--header-h); padding:0 var(--gutter);
  padding-left:max(var(--gutter), env(safe-area-inset-left));
  padding-right:max(var(--gutter), env(safe-area-inset-right));
  display:flex; align-items:center; justify-content:space-between; gap:12px;
}
.pc-brand{
  display:flex; align-items:center; gap:10px; min-width:0; min-height:var(--tap);
  text-decoration:none; color:var(--ink); border-radius:4px;
}
.pc-brand:focus-visible, .pc-navlink:focus-visible, .menu-btn:focus-visible, .drawer a:focus-visible{ outline:2px solid var(--copper); outline-offset:3px; }
.pc-mark{
  width:30px; height:30px; flex-shrink:0; border:1.5px solid var(--ink);
  display:flex; align-items:center; justify-content:center;
  font-family:'IBM Plex Mono', monospace; font-size:13px; font-weight:500;
  background:var(--ink); color:var(--paper);
}
.pc-brand-text{ display:flex; flex-direction:column; min-width:0; }
.pc-brand-name{ font-family:'Space Grotesk', sans-serif; font-weight:600; font-size:16px; letter-spacing:-0.01em; line-height:1.2; white-space:nowrap; }
.pc-brand-url{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft); line-height:1.3; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
@media (min-width:1024px){ .pc-brand-name{ font-size:17px; } }

.pc-nav{ display:flex; align-items:center; gap:4px; flex-shrink:0; }
.pc-navlink{
  display:none; align-items:center; min-height:var(--tap); padding:0 12px;
  font-family:'Space Grotesk', sans-serif; font-size:14px; color:var(--ink-soft); text-decoration:none; white-space:nowrap;
}
.pc-navlink:hover, .pc-navlink[aria-current="page"]{ color:var(--ink); }
.pc-navlink[aria-current="page"]{ text-decoration:underline; text-underline-offset:6px; text-decoration-color:var(--copper); }
@media (min-width:768px){ .pc-navlink{ display:inline-flex; } .pc-nav{ gap:8px; } }

.menu-btn{
  width:var(--tap); height:var(--tap); border-radius:50%; border:none; padding:0; margin-left:4px;
  background:var(--menu-orange); cursor:pointer; flex-shrink:0;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px;
  box-shadow:0 2px 6px rgba(27,32,35,0.18); transition:transform .15s, background .15s;
}
.menu-btn:hover{ background:var(--menu-orange-hover); transform:scale(1.05); }
.menu-btn span{ display:block; width:18px; height:2px; border-radius:2px; background:#fff; }

/* ---------------- slide-out menu ---------------- */
.drawer-overlay{ position:fixed; inset:0; background:rgba(27,32,35,0.35); opacity:0; pointer-events:none; transition:opacity .2s; z-index:60; }
.drawer-overlay.open{ opacity:1; pointer-events:auto; }
.drawer{
  position:fixed; top:0; right:0; bottom:0; width:min(320px, 88vw); z-index:61;
  background:var(--paper-raised); border-left:1px solid var(--line-strong);
  transform:translateX(100%); visibility:hidden; transition:transform .25s ease, visibility 0s linear .25s;
  overflow-y:auto; overscroll-behavior:contain;
  padding:14px 20px calc(32px + env(safe-area-inset-bottom));
  padding-right:max(20px, env(safe-area-inset-right));
}
.drawer.open{ transform:translateX(0); visibility:visible; transition:transform .25s ease; }
.drawer-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; }
.drawer-title{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft); letter-spacing:.08em; }
.drawer-close{ width:var(--tap); height:var(--tap); border:1px solid var(--line-strong); background:transparent; cursor:pointer; font-size:20px; color:var(--ink); }
.drawer-link{
  display:flex; align-items:center; min-height:var(--tap); padding:4px 0;
  font-family:'Space Grotesk', sans-serif; font-size:16px; color:var(--ink); text-decoration:none; border-bottom:1px solid var(--line);
}
.drawer-link:hover{ color:var(--copper-ink); }
.drawer-section{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft); letter-spacing:.08em; margin:22px 0 2px; }
.drawer-cat{
  display:flex; align-items:center; min-height:40px; padding-top:6px;
  font-family:'Space Grotesk', sans-serif; font-size:15px; font-weight:500; color:var(--ink); text-decoration:none;
}
.drawer-cat:hover{ color:var(--copper-ink); }
.drawer-sub{
  display:flex; align-items:center; min-height:40px; padding:0 0 0 14px;
  font-family:'Space Grotesk', sans-serif; font-size:14px; color:var(--ink-soft); border-left:1px solid var(--line); text-decoration:none;
}
.drawer-sub.live{ color:var(--copper-ink); }
.drawer-sub.live:hover{ color:var(--ink); }
.drawer-sub[aria-current="page"]{ font-weight:600; border-left:2px solid var(--copper); }
.drawer-sub.off{ cursor:default; opacity:.6; }
.drawer .soon{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft); margin-left:6px; }

/* ---------------- saved jobs (calculator pages) ---------------- */
.sj-bar{display:flex; justify-content:flex-end; margin:-12px 0 14px;}
.sj-save{font-family:'IBM Plex Mono', monospace; font-size:12px; min-height:36px; padding:7px 12px; border:1px solid var(--line-strong); background:var(--paper-raised); color:var(--ink); cursor:pointer;}
.sj-save:hover{border-color:var(--copper); color:var(--copper-ink);}
.sj-banner{display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; font-size:13px; padding:10px 14px; margin-bottom:14px; border:1px solid var(--copper); background:rgba(168,90,42,0.07); color:var(--copper-ink);}
.sj-banner span:last-child{display:flex; gap:8px; flex-wrap:wrap;}
.sj-link{cursor:pointer; text-decoration:underline;}
.sj-btn{font-family:'Space Grotesk', sans-serif; font-size:13px; font-weight:500; min-height:40px; padding:8px 14px; border:1px solid var(--ink); background:var(--ink); color:var(--paper); cursor:pointer;}
.sj-btn.ghost{background:transparent; color:var(--ink);}
.sj-modal-wrap{position:fixed; inset:0; background:rgba(27,32,35,0.4); display:flex; align-items:center; justify-content:center; z-index:100; padding:16px; overflow-y:auto;}
.sj-modal{background:var(--paper-raised); border:1px solid var(--line-strong); padding:22px; width:100%; max-width:420px; max-height:calc(100dvh - 32px); overflow-y:auto;}
.sj-modal h3{margin:0 0 6px; font-size:17px; font-weight:600;}
.sj-modal .sj-sub{font-size:13px; color:var(--ink-soft); margin:0 0 14px;}
.sj-modal label{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft);}
.sj-modal input{width:100%; box-sizing:border-box; margin:6px 0 10px; font-family:'IBM Plex Mono', monospace; font-size:14px; padding:10px 12px; border:1px solid var(--line-strong); background:var(--paper);}
.sj-note{font-size:12px; color:var(--ink-soft); line-height:1.5; margin:0 0 16px;}
.sj-btns{display:flex; justify-content:flex-end; gap:8px; flex-wrap:wrap;}
.sj-toast{position:fixed; left:50%; bottom:calc(22px + env(safe-area-inset-bottom)); transform:translate(-50%, 20px); opacity:0; pointer-events:none; transition:all .25s; background:var(--ink); color:var(--paper); font-size:13px; padding:12px 16px; width:max-content; max-width:calc(100vw - 32px); z-index:101;}
.sj-toast.show{opacity:1; transform:translate(-50%, 0); pointer-events:auto;}
.sj-toast a{color:#F0B48C;}

/* ---------------- calculator page shell ---------------- */
.calc-main{ max-width:760px; margin:0 auto; padding:28px var(--gutter) 100px; }
@media (min-width:1024px){ .calc-main.wide{ max-width:var(--page-max); } .split .wall-row .tag{ width:128px; } }

/* step indicator: number + name chips */
.stepper .step-chip{ display:inline-flex; align-items:center; gap:5px; }
.stepper .step-chip .n::after{ content:'.'; }

/* drawings: scaled to fit by pc-shared.js (never below a readable size) */
.diagram-panel .pc-scroll-hint{ display:none; font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft); margin-top:8px; }
.diagram-panel.pc-overflows .pc-scroll-hint{ display:block; }

/* ---- desktop: two-column working area ---- */
.split{ display:block; }
@media (min-width:1024px){
  .split{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:20px; align-items:start; }
  .split > .split-aside{ grid-column:2; grid-row:1; position:sticky; top:calc(var(--header-h) + 16px); }
  .split > .split-main{ grid-column:1; grid-row:1; }
  .setup-grid{ display:grid; grid-template-columns:1fr 1fr; gap:0 16px; align-items:start; }
}

/* ================= PHONES (< 600px) ================= */
@media (max-width:599px){
  .calc-main{ padding-top:20px; padding-bottom:72px; }
  .calc-main h1{ font-size:20px; }

  /* one compact progress row instead of wrapping chips */
  .calc-main .stepper{ flex-wrap:nowrap; gap:4px; }
  .calc-main .stepper .step-chip{ flex:0 0 auto; justify-content:center; min-width:30px; min-height:32px; padding:4px 8px; font-size:12px; }
  .calc-main .stepper .step-chip .t{ display:none; }
  .calc-main .stepper .step-chip.active{ flex:1 1 auto; justify-content:flex-start; }
  .calc-main .stepper .step-chip.active .t{ display:inline; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
  .calc-main .stepper .step-chip .n::after{ content:''; }
  .calc-main .stepper .step-chip.active .n::after{ content:'.'; }

  /* panels breathe less, touch targets grow */
  .calc-main .panel{ padding:16px 14px; }
  .calc-main .btn{ min-height:var(--tap); padding:11px 16px; }
  .calc-main .nav-row{ gap:10px; }
  .calc-main .nav-row .btn{ flex:1 1 0; }
  .calc-main .nav-row > span:empty{ display:none; }
  .sj-bar{ margin:-10px 0 12px; }
  .sj-save{ min-height:40px; }
  .calc-main .status-line{ flex-wrap:wrap; }
  .calc-main .status-line button{ min-height:40px; padding:6px 12px; }

  /* 16px inputs stop iPhones zooming in on tap */
  .calc-main input:not([type=checkbox]), .calc-main select, .sj-modal input, .app-picker input{ font-size:16px; min-height:var(--tap); }
  .field{ min-width:0 !important; flex-basis:100%; }

  /* length rows: label on its own line, big +/- buttons */
  .calc-main .wall-row{ flex-wrap:wrap; gap:8px; padding:10px 12px; }
  .calc-main .wall-row .tag{ width:auto; flex-basis:100%; }
  .calc-main .section-row{ gap:8px; padding:10px 12px; }
  .calc-main .section-row .tag{ width:36px; }
  .calc-main .stepper-input{ min-width:0; }
  .calc-main .stepper-input button{ width:var(--tap); height:var(--tap); font-size:18px; flex-shrink:0; }
  .calc-main .stepper-input input{ min-width:0; width:100%; }

  /* results: label left, value right, wrap instead of squeezing */
  .calc-main .result-row, .calc-main .route-row{ gap:10px; }
  .calc-main .result-row > span:first-child, .calc-main .route-row > span:first-child{ min-width:0; overflow-wrap:anywhere; }
  .calc-main .result-row .val, .calc-main .route-row .val{ text-align:right; }
  .calc-main .route-row{ flex-wrap:wrap; }

  /* drawings run edge to edge on phones */
  .diagram-panel.bleed{ margin-left:calc(-1 * var(--gutter)); margin-right:calc(-1 * var(--gutter)); border-left:none; border-right:none; padding:12px 10px; }
  .panel .diagram-panel.bleed{ margin-left:-14px; margin-right:-14px; }
  .panel > .diagram-panel.bleed:last-child{ margin-bottom:-16px; border-bottom:none; }
  .calc-main .result-row .val{ white-space:nowrap; }

  .sj-btns .sj-btn{ flex:1 1 auto; }
}
@media (max-width:359px){
  .pc-brand-name{ font-size:15px; }
  .pc-brand{ gap:8px; }
}

/* never print the site chrome */
@media print{
  .pc-header, .drawer, .drawer-overlay, .sj-toast, .pc-scroll-hint{ display:none !important; }
  .split, .setup-grid{ display:block !important; }
  .split > .split-aside{ position:static !important; }
  .calc-main{ max-width:100% !important; padding:0 !important; }
  .diagram-panel.bleed{ margin:0 0 10px !important; border:1px solid #bbb !important; }
}

/* ---------------- account buttons and locks ---------------- */
.pc-auth-slot{ display:flex; align-items:center; gap:6px; margin:0 4px; }
.pc-authbtn{ font-family:'Space Grotesk',sans-serif; font-size:13.5px; font-weight:500; min-height:38px; padding:6px 12px; border:1px solid var(--line-strong); background:transparent; color:var(--ink); cursor:pointer; text-decoration:none; display:inline-flex; align-items:center; white-space:nowrap; }
.pc-authbtn.solid{ background:var(--ink); color:var(--paper); border-color:var(--ink); }
@media (max-width:767px){ .pc-auth-slot .pc-authbtn:not(.solid){ display:none; } .pc-authbtn{ font-size:12.5px; padding:6px 9px; } .pc-brand-url{ display:none; } }
@media (max-width:400px){ .pc-auth-slot{ display:none; } }
.drawer-account{ padding:6px 0 12px; border-bottom:1px solid var(--line); margin-bottom:8px; }
.drawer-account button.drawer-link{ width:100%; text-align:left; background:none; border:0; font:inherit; cursor:pointer; }
.da-email{ font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--ink-soft); word-break:break-all; }
.da-status{ font-size:12px; margin:2px 0 6px; font-weight:600; } .da-status.ok{ color:#3C4629; } .da-status.no{ color:#B23A2E; }
.pc-lock-note{ font-size:13px; line-height:1.5; color:var(--copper-ink); border:1px dashed var(--copper); background:rgba(168,90,42,0.06); padding:10px 14px; margin:8px 0; }
.pc-lock-note a{ color:var(--copper-ink); font-weight:600; }
.pc-lock-actions{ display:block; margin-top:4px; }
.val.is-locked{ color:var(--copper-ink); font-size:12.5px; }

@media print{
  body.pc-free > *{ display:none !important; }
  body.pc-free::before{ content:'Printing and PDF export are for members. Start your free trial at plumbingcalculator.com.au'; display:block; font:16px/1.5 'Space Grotesk',sans-serif; padding:40px; }
}