/* =====================================================================
   Sagar Air MES — shared design system (app.css)
   One stylesheet for kiosk / supervisor / owner. No framework, no CDN.
   Shop-floor palette, responsive from ~768px up to a 1366x768 touch panel.
   ===================================================================== */

/* ------------------------------------------------------------- tokens */
:root {
  /* colour — surfaces & ink */
  --sa-bg:        #0e1116;
  --sa-surface:   #171d25;
  --sa-surface-2: #1f2732;
  --sa-surface-3: #2a3543;
  --sa-ink:       #e9eef5;
  --sa-ink-dim:   #9fb0c3;
  --sa-ink-mute:  #6f8199;
  --sa-line:      #2b3644;
  --sa-line-soft: #222c38;

  /* brand */
  --sa-accent:      #f0871f;
  --sa-accent-ink:  #1a1206;
  --sa-accent-soft: #3a2a12;

  /* semantic state colours */
  --sa-running:   #2fbf6b;
  --sa-waiting:   #e6a72c;
  --sa-idle:      #7d8fa3;
  --sa-paused:    #3d8fd6;
  --sa-breakdown: #e4483c;
  --sa-blocked:   #e4483c;
  --sa-done:      #3a4b5f;

  /* severity */
  --sa-sev-high:   #e4483c;
  --sa-sev-medium: #e6a72c;
  --sa-sev-low:    #7d8fa3;

  /* role accents */
  --sa-role-operator:   #f0871f;
  --sa-role-supervisor: #3d8fd6;
  --sa-role-owner:      #a06cd5;

  /* spacing scale */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 32px; --sp-7: 48px;

  /* radius scale */
  --r-1: 4px; --r-2: 8px; --r-3: 12px; --r-4: 16px; --r-pill: 999px;

  /* type scale */
  --fs-h1: 1.55rem; --fs-h2: 1.15rem; --fs-body: 1rem;
  --fs-sm: .9rem;   --fs-cap: .78rem;
  --fw-reg: 400; --fw-med: 600; --fw-bold: 800;

  /* elevation */
  --sh-1: 0 1px 2px rgba(0,0,0,.4);
  --sh-2: 0 4px 14px rgba(0,0,0,.45);
  --sh-3: 0 10px 30px rgba(0,0,0,.55);

  --tap: 44px;                 /* minimum touch target */
  --focus: 0 0 0 3px rgba(240,135,31,.55);
}

/* --------------------------------------------------------------- base */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--sa-bg);
  color: var(--sa-ink);
  font: var(--fw-reg) var(--fs-body)/1.5 "Segoe UI", system-ui, Arial, sans-serif;
}
h1, h2, h3 { margin: 0; line-height: 1.25; }
h1 { font-size: var(--fs-h1); font-weight: var(--fw-bold); }
h2 { font-size: var(--fs-h2); font-weight: var(--fw-med); letter-spacing: .02em; }
h3 { font-size: var(--fs-body); font-weight: var(--fw-med); }
a { color: var(--sa-accent); }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--r-1); }

/* ----------------------------------------------------------- app shell */
.sa-app { min-height: 100vh; display: flex; flex-direction: column; }
.sa-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: var(--sp-4);
  padding: var(--sp-3) var(--sp-5);
  background: linear-gradient(180deg, var(--sa-surface-2), var(--sa-surface));
  border-bottom: 2px solid var(--sa-line);
  box-shadow: var(--sh-1);
}
.sa-header .sa-brand { display: flex; flex-direction: column; gap: 2px; }
.sa-header .sa-brand small { color: var(--sa-ink-mute); font-size: var(--fs-cap); letter-spacing: .12em; }
.sa-header .sa-spacer { flex: 1; }
.sa-header .sa-meta { display: flex; align-items: center; gap: var(--sp-3); color: var(--sa-ink-dim); font-size: var(--fs-sm); }

.sa-main { flex: 1; width: 100%; max-width: 1400px; margin: 0 auto; padding: var(--sp-5); }
.sa-grid { display: grid; gap: var(--sp-4); }
.sa-grid.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.sa-grid.cols-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.sa-grid.cols-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.sa-row { display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center; }
.sa-row.tight { gap: var(--sp-2); }
.sa-spread { display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.sa-muted { color: var(--sa-ink-dim); }
.sa-cap { font-size: var(--fs-cap); letter-spacing: .08em; text-transform: uppercase; color: var(--sa-ink-mute); }
.sa-num { font-variant-numeric: tabular-nums; }
.sa-hide { display: none !important; }

/* ------------------------------------------------------------- panels */
.sa-panel {
  background: var(--sa-surface);
  border: 1px solid var(--sa-line-soft);
  border-radius: var(--r-3);
  padding: var(--sp-4) var(--sp-5);
  box-shadow: var(--sh-1);
}
.sa-panel + .sa-panel { margin-top: var(--sp-4); }
.sa-panel__head {
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--sp-3); margin-bottom: var(--sp-3);
}
.sa-panel__title { font-size: var(--fs-h2); font-weight: var(--fw-med); color: var(--sa-ink); }
.sa-panel__sub { color: var(--sa-ink-mute); font-size: var(--fs-cap); text-transform: uppercase; letter-spacing: .08em; }

/* --------------------------------------------------------- KPI cards */
.sa-kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: var(--sp-4); }
.sa-kpi {
  background: var(--sa-surface);
  border: 1px solid var(--sa-line-soft);
  border-left: 4px solid var(--sa-accent);
  border-radius: var(--r-3);
  padding: var(--sp-4);
  box-shadow: var(--sh-1);
}
.sa-kpi__n { font-size: 2.1rem; font-weight: var(--fw-bold); font-variant-numeric: tabular-nums; line-height: 1.1; }
.sa-kpi__label { margin-top: var(--sp-1); font-size: var(--fs-cap); letter-spacing: .09em; text-transform: uppercase; color: var(--sa-ink-mute); }
.sa-kpi--running  { border-left-color: var(--sa-running); }
.sa-kpi--waiting  { border-left-color: var(--sa-waiting); }
.sa-kpi--done     { border-left-color: var(--sa-done); }
.sa-kpi--alert    { border-left-color: var(--sa-breakdown); }
.sa-kpi--running .sa-kpi__n { color: var(--sa-running); }
.sa-kpi--waiting .sa-kpi__n { color: var(--sa-waiting); }
.sa-kpi--alert   .sa-kpi__n { color: var(--sa-breakdown); }

/* -------------------------------------------------------- pills/badges */
.sa-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 12px; border-radius: var(--r-pill);
  font-size: var(--fs-cap); font-weight: var(--fw-bold);
  letter-spacing: .05em; text-transform: uppercase;
  border: 1px solid transparent; white-space: nowrap;
}
.sa-pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.sa-pill.plain::before { display: none; }
.sa-pill--running   { color: var(--sa-running);   background: rgba(47,191,107,.14); border-color: rgba(47,191,107,.35); }
.sa-pill--waiting   { color: var(--sa-waiting);   background: rgba(230,167,44,.14);  border-color: rgba(230,167,44,.35); }
.sa-pill--idle      { color: var(--sa-idle);      background: rgba(125,143,163,.14); border-color: rgba(125,143,163,.35); }
.sa-pill--paused    { color: var(--sa-paused);    background: rgba(61,143,214,.14);  border-color: rgba(61,143,214,.35); }
.sa-pill--breakdown,
.sa-pill--blocked   { color: var(--sa-breakdown); background: rgba(228,72,60,.16);   border-color: rgba(228,72,60,.4); }
.sa-pill--done      { color: var(--sa-ink-dim);   background: rgba(58,75,95,.4);     border-color: rgba(58,75,95,.7); }
.sa-sev { font-weight: var(--fw-bold); font-size: var(--fs-cap); letter-spacing: .06em; }
.sa-sev--HIGH   { color: var(--sa-sev-high); }
.sa-sev--MEDIUM { color: var(--sa-sev-medium); }
.sa-sev--LOW    { color: var(--sa-sev-low); }
.sa-tag { font-size: var(--fs-cap); color: var(--sa-ink-dim); background: var(--sa-surface-3); padding: 2px 8px; border-radius: var(--r-1); }
.sa-role-badge { padding: 3px 12px; border-radius: var(--r-pill); font-size: var(--fs-cap); font-weight: var(--fw-bold); text-transform: uppercase; letter-spacing: .06em; color: var(--sa-accent-ink); }
.sa-role-badge--operator   { background: var(--sa-role-operator); }
.sa-role-badge--supervisor { background: var(--sa-role-supervisor); color: #06121f; }
.sa-role-badge--owner      { background: var(--sa-role-owner); color: #120820; }

/* ------------------------------------------------------------- tables */
.sa-table-wrap { overflow: auto; border-radius: var(--r-2); border: 1px solid var(--sa-line-soft); }
.sa-table { width: 100%; border-collapse: collapse; background: var(--sa-surface); font-size: var(--fs-sm); }
.sa-table thead th {
  position: sticky; top: 0; z-index: 2;
  text-align: left; white-space: nowrap;
  padding: var(--sp-2) var(--sp-3);
  background: var(--sa-surface-2); color: var(--sa-ink-mute);
  font-size: var(--fs-cap); font-weight: var(--fw-med); letter-spacing: .06em; text-transform: uppercase;
  border-bottom: 1px solid var(--sa-line);
}
.sa-table tbody td { padding: var(--sp-3); border-bottom: 1px solid var(--sa-line-soft); vertical-align: middle; }
.sa-table tbody tr:nth-child(even) { background: rgba(255,255,255,.018); }
.sa-table tbody tr:hover { background: rgba(240,135,31,.06); }
.sa-table td.num, .sa-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.sa-table td.mono { font-family: "Cascadia Mono", Consolas, monospace; font-size: var(--fs-cap); }

/* ------------------------------------------------------------ buttons */
.sa-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--tap); padding: 0 var(--sp-4);
  border: 1px solid var(--sa-line); border-radius: var(--r-2);
  background: var(--sa-surface-2); color: var(--sa-ink);
  font: var(--fw-med) var(--fs-body)/1 "Segoe UI", system-ui, Arial, sans-serif;
  cursor: pointer; transition: filter .12s ease, background .12s ease, transform .05s ease;
}
.sa-btn:hover { filter: brightness(1.14); }
.sa-btn:active { transform: translateY(1px); }
.sa-btn:disabled { opacity: .45; cursor: not-allowed; filter: none; }
.sa-btn--sm { min-height: 34px; padding: 0 var(--sp-3); font-size: var(--fs-sm); }
.sa-btn--lg { min-height: 56px; padding: 0 var(--sp-5); font-size: 1.15rem; }
.sa-btn--block { width: 100%; }
.sa-btn--primary   { background: var(--sa-accent);   color: var(--sa-accent-ink); border-color: var(--sa-accent); }
.sa-btn--secondary { background: var(--sa-surface-3); color: var(--sa-ink); }
.sa-btn--success   { background: var(--sa-running);  color: #04140a; border-color: var(--sa-running); }
.sa-btn--danger    { background: var(--sa-breakdown); color: #fff; border-color: var(--sa-breakdown); }
.sa-btn--ghost     { background: transparent; color: var(--sa-ink-dim); border-color: var(--sa-line); }
.sa-btn--ghost:hover { color: var(--sa-ink); }

/* ------------------------------------------------------ form controls */
.sa-field { display: flex; flex-direction: column; gap: 6px; }
.sa-label { font-size: var(--fs-cap); letter-spacing: .06em; text-transform: uppercase; color: var(--sa-ink-mute); }
.sa-input, .sa-select, .sa-textarea {
  min-height: var(--tap); width: 100%; padding: 0 var(--sp-3);
  background: var(--sa-bg); color: var(--sa-ink);
  border: 1px solid var(--sa-line); border-radius: var(--r-2);
  font: var(--fw-reg) var(--fs-body)/1.4 "Segoe UI", system-ui, Arial, sans-serif;
}
.sa-textarea { min-height: 72px; padding: var(--sp-3); }
.sa-input::placeholder, .sa-textarea::placeholder { color: var(--sa-ink-mute); }
.sa-input:focus, .sa-select:focus, .sa-textarea:focus { outline: none; border-color: var(--sa-accent); box-shadow: var(--focus); }
.sa-select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--sa-ink-dim) 50%), linear-gradient(135deg, var(--sa-ink-dim) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 34px; }

/* ---------------------------------------------------------- PIN pad */
.sa-pinpad { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-2); max-width: 300px; }
.sa-pinpad .sa-btn { min-height: 60px; font-size: 1.4rem; }
.sa-pin-dots { display: flex; gap: var(--sp-3); min-height: 30px; align-items: center; }
.sa-pin-dot { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--sa-line); background: transparent; }
.sa-pin-dot.on { background: var(--sa-accent); border-color: var(--sa-accent); }

/* ------------------------------------------------------ floor / tiles */
.sa-floor { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px,1fr)); gap: var(--sp-4); }
.sa-tile {
  position: relative; text-align: left; width: 100%;
  background: var(--sa-surface); border: 1px solid var(--sa-line-soft);
  border-top: 4px solid var(--sa-idle); border-radius: var(--r-3);
  padding: var(--sp-4); color: var(--sa-ink); cursor: pointer;
  transition: transform .08s ease, box-shadow .12s ease, border-color .12s ease;
}
.sa-tile:hover { transform: translateY(-2px); box-shadow: var(--sh-2); }
.sa-tile--RUNNING   { border-top-color: var(--sa-running); }
.sa-tile--WAITING   { border-top-color: var(--sa-waiting); }
.sa-tile--IDLE      { border-top-color: var(--sa-idle); }
.sa-tile--PAUSED    { border-top-color: var(--sa-paused); }
.sa-tile--BREAKDOWN { border-top-color: var(--sa-breakdown); }
.sa-tile__name { font-weight: var(--fw-med); font-size: var(--fs-body); margin-bottom: 2px; }
.sa-tile__job { font-family: "Cascadia Mono", Consolas, monospace; font-size: var(--fs-cap); color: var(--sa-ink-dim); margin: var(--sp-2) 0; min-height: 1.2em; }
.sa-tile__foot { display: flex; justify-content: space-between; align-items: center; gap: var(--sp-2); margin-top: var(--sp-2); font-size: var(--fs-cap); color: var(--sa-ink-mute); }
.sa-tile__counts { display: flex; gap: var(--sp-3); }
.sa-tile__counts b { color: var(--sa-ink); }

/* ------------------------------------------------------------- jobs */
.sa-jobgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: var(--sp-3); }
.sa-job {
  background: var(--sa-surface); border: 1px solid var(--sa-line-soft);
  border-left: 4px solid var(--sa-waiting); border-radius: var(--r-2);
  padding: var(--sp-3) var(--sp-4);
}
.sa-job__top { display: flex; justify-content: space-between; align-items: baseline; gap: var(--sp-2); }
.sa-job__id { font-family: "Cascadia Mono", Consolas, monospace; font-weight: var(--fw-bold); font-size: var(--fs-sm); }
.sa-job__item { margin: 4px 0 var(--sp-2); color: var(--sa-ink); }
.sa-job__meta { display: flex; flex-wrap: wrap; gap: var(--sp-3); font-size: var(--fs-cap); color: var(--sa-ink-dim); }
.sa-job__meta b { color: var(--sa-ink); font-variant-numeric: tabular-nums; }
.sa-job__actions { margin-top: var(--sp-3); display: flex; gap: var(--sp-2); }

/* waiting clock colour rules: amber >= 60, red >= 120 */
.sa-wait { font-weight: var(--fw-bold); font-variant-numeric: tabular-nums; }
.sa-wait--ok   { color: var(--sa-ink-mute); }
.sa-wait--warn { color: var(--sa-waiting); }
.sa-wait--hot  { color: var(--sa-breakdown); }

/* ------------------------------------------------------------- banner */
.sa-banner {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4); border-radius: var(--r-2);
  border: 1px solid var(--sa-waiting); background: rgba(230,167,44,.12);
  color: var(--sa-waiting); font-weight: var(--fw-med);
}
.sa-banner--info { border-color: var(--sa-paused); background: rgba(61,143,214,.12); color: var(--sa-paused); }
.sa-banner--ok   { border-color: var(--sa-running); background: rgba(47,191,107,.12); color: var(--sa-running); }
.sa-banner--bad  { border-color: var(--sa-breakdown); background: rgba(228,72,60,.14); color: var(--sa-breakdown); }

/* ---------------------------------------------------- empty / skeleton */
.sa-empty { text-align: center; padding: var(--sp-6); color: var(--sa-ink-mute); }
.sa-empty__icon { font-size: 2rem; margin-bottom: var(--sp-2); opacity: .6; }
.sa-skel { background: linear-gradient(90deg, var(--sa-surface-2) 25%, var(--sa-surface-3) 37%, var(--sa-surface-2) 63%); background-size: 400% 100%; animation: sa-shimmer 1.3s ease infinite; border-radius: var(--r-2); height: 14px; }
.sa-skel--row { height: 40px; margin-bottom: var(--sp-2); }
@keyframes sa-shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

/* ---------------------------------------------------------- segmented */
.sa-seg { display: inline-flex; background: var(--sa-surface-2); border: 1px solid var(--sa-line); border-radius: var(--r-2); overflow: hidden; }
.sa-seg button { min-height: 38px; padding: 0 var(--sp-4); border: 0; background: transparent; color: var(--sa-ink-dim); font: var(--fw-med) var(--fs-sm)/1 inherit; cursor: pointer; }
.sa-seg button[aria-pressed="true"] { background: var(--sa-accent); color: var(--sa-accent-ink); }

/* --------------------------------------------------------------- toast */
.sa-toasts { position: fixed; right: var(--sp-5); bottom: var(--sp-5); z-index: 60; display: flex; flex-direction: column; gap: var(--sp-2); max-width: min(420px, 90vw); }
.sa-toast {
  display: flex; align-items: flex-start; gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4); border-radius: var(--r-2);
  background: var(--sa-surface-2); border: 1px solid var(--sa-line); border-left: 4px solid var(--sa-paused);
  box-shadow: var(--sh-3); animation: sa-toast-in .18s ease;
}
.sa-toast--ok   { border-left-color: var(--sa-running); }
.sa-toast--warn { border-left-color: var(--sa-waiting); }
.sa-toast--err  { border-left-color: var(--sa-breakdown); }
.sa-toast__msg { font-size: var(--fs-sm); }
@keyframes sa-toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ------------------------------------------------------------ charts */
.sa-chart { width: 100%; }
.sa-chart svg { width: 100%; height: auto; display: block; }
.sa-chart__legend { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-3); font-size: var(--fs-cap); color: var(--sa-ink-dim); }
.sa-chart__legend span { display: inline-flex; align-items: center; gap: 6px; }
.sa-chart__legend i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }

/* --------------------------------------------------------- modal (drill) */
.sa-modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; padding: var(--sp-5); background: rgba(4,7,11,.72); }
.sa-modal__card { width: min(760px, 100%); max-height: 88vh; overflow: auto; background: var(--sa-surface); border: 1px solid var(--sa-line); border-radius: var(--r-4); box-shadow: var(--sh-3); padding: var(--sp-5); }

/* ----------------------------------------------------------- helpers */
.sa-bar-track { height: 10px; border-radius: var(--r-pill); background: var(--sa-surface-3); overflow: hidden; }
.sa-bar-fill { height: 100%; border-radius: var(--r-pill); background: var(--sa-accent); }
.sa-progress { min-width: 120px; }
.sa-divider { height: 1px; background: var(--sa-line-soft); margin: var(--sp-4) 0; }

/* ------------------------------------------------------ responsive */
@media (max-width: 1100px) {
  .sa-grid.cols-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sa-grid.cols-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 820px) {
  :root { --fs-h1: 1.3rem; --fs-h2: 1.05rem; }
  .sa-main { padding: var(--sp-4); }
  .sa-header { padding: var(--sp-3) var(--sp-4); flex-wrap: wrap; }
  .sa-grid.cols-2, .sa-grid.cols-3, .sa-grid.cols-4 { grid-template-columns: 1fr; }
  .sa-kpis { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sa-floor { grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); }
  .sa-toasts { left: var(--sp-4); right: var(--sp-4); bottom: var(--sp-4); }
}
@media (max-width: 560px) {
  .sa-kpis { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}