/* Cartridge Corner. One bold idea: the products are cartridges. Everything
   else stays quiet so the shelf and the status lamps carry the page. */

:root {
  --paper: #eef0f6;
  --card: #ffffff;
  --ink: #241431;
  --steel: #5d6275;
  --line: #d5d8e3;
  --plastic: #c9ccd6;
  --plastic-dark: #b3b7c4;
  --marquee: #f2b705;
  --on-marquee: #241431;
  --ok: #17905f;
  --slow: #b86f00;
  --down: #cc3a30;
  --off: #9a9fb0;
  --radius-s: 4px;
  --radius-m: 8px;
  --display: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #150d1d;
    --card: #21162b;
    --ink: #efeaf5;
    --steel: #aaa4b9;
    --line: #3a2c47;
    --plastic: #3b3247;
    --plastic-dark: #2f2739;
    --ok: #34c486;
    --slow: #e89b2b;
    --down: #ef6559;
    --off: #6c6479;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #150d1d; --card: #21162b; --ink: #efeaf5; --steel: #aaa4b9; --line: #3a2c47;
  --plastic: #3b3247; --plastic-dark: #2f2739; --ok: #34c486; --slow: #e89b2b;
  --down: #ef6559; --off: #6c6479; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.55 var(--body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px 64px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0; }
p { margin: 0; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--marquee); outline-offset: 2px; }

/* --- header -------------------------------------------------------------- */
.top {
  background: #241431;
  color: #fff;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 4px solid var(--marquee);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  font: 700 1.25rem/1 var(--display); letter-spacing: .01em; }
.brand-mark { width: 28px; height: 28px; color: #fff; }
.signout { display: flex; align-items: center; gap: 12px; }
.who { font-size: .875rem; color: #d9d1e3; }

/* --- buttons ------------------------------------------------------------- */
.btn {
  font: 600 .95rem/1 var(--body);
  border: 2px solid transparent;
  border-radius: var(--radius-s);
  padding: 11px 16px;
  cursor: pointer;
  min-height: 44px;
}
.btn:disabled { cursor: not-allowed; opacity: .55; }
.btn-buy, .btn-primary { background: var(--marquee); color: var(--on-marquee); }
.btn-buy:hover:not(:disabled), .btn-primary:hover { background: #ffc91f; }
.btn-quiet { background: transparent; color: #fff; border-color: #6d5a80; padding: 8px 12px; min-height: 36px; }
.btn-quiet:hover { border-color: #fff; }
.btn-break { background: var(--ink); color: var(--paper); white-space: nowrap; }
.btn-break:hover:not(:disabled) { background: var(--down); color: #fff; }
.btn-reset { background: transparent; color: var(--ink); border-color: var(--line); width: 100%; }
.btn-reset:hover:not(:disabled) { border-color: var(--ink); }

/* --- hero ---------------------------------------------------------------- */
.hero { padding: 48px 0 28px; max-width: 46rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 700; letter-spacing: -.01em; }
.lede { margin-top: 14px; font-size: 1.125rem; color: var(--steel); max-width: 38rem; }

/* --- status lamps -------------------------------------------------------- */
.status {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px;
  padding: 16px 18px; margin-bottom: 36px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-m);
}
.status-title { font-size: 1rem; font-weight: 600; }
.lamps { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px 24px; }
.lamp { display: grid; grid-template-columns: 14px max-content; grid-template-rows: auto auto; justify-content: start; column-gap: 10px; align-items: center; }
.bulb {
  grid-row: span 2; width: 14px; height: 14px; border-radius: 50%;
  background: var(--off); box-shadow: inset 0 -2px 0 rgba(0,0,0,.18);
}
.lamp-name { font-weight: 600; font-size: .95rem; }
.lamp-state { font-size: .85rem; color: var(--steel); }
.lamp[data-state="ok"] .bulb { background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 22%, transparent); }
.lamp[data-state="slow"] .bulb { background: var(--slow); box-shadow: 0 0 0 4px color-mix(in srgb, var(--slow) 25%, transparent); }
.lamp[data-state="down"] .bulb { background: var(--down); animation: alarm 1.1s steps(2, jump-none) infinite; }
.lamp[data-state="down"] .lamp-state { color: var(--down); font-weight: 600; }
.lamp[data-state="slow"] .lamp-state { color: var(--slow); font-weight: 600; }
.status-note { flex-basis: 100%; font-size: .9rem; color: var(--steel); }
.status-note:empty { display: none; }
@keyframes alarm { 0% { box-shadow: 0 0 0 5px color-mix(in srgb, var(--down) 35%, transparent); } 100% { box-shadow: none; } }
@media (prefers-reduced-motion: reduce) { .lamp[data-state="down"] .bulb { animation: none; box-shadow: 0 0 0 4px color-mix(in srgb, var(--down) 30%, transparent); } }

/* --- the shelf: cartridge-shaped products -------------------------------- */
.shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 28px 24px; }
.cart {
  --notch: 26px;
  position: relative;
  display: flex; flex-direction: column; gap: 14px;
  padding: 0 18px 18px;
  background: var(--plastic);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
  border-radius: var(--radius-s) 0 var(--radius-m) var(--radius-m);
}
.label-ember { --label: #e4572e; }
.label-sky { --label: #3a86ff; }
.label-violet { --label: #8338ec; }
.label-teal { --label: #2a9d8f; }
.label-sand { --label: #f4a261; }
.label-crimson { --label: #d62839; }
.cart-grip {
  height: 22px; margin: 0 calc(var(--notch) + 4px) 0 4px;
  background: repeating-linear-gradient(90deg, var(--plastic-dark) 0 3px, transparent 3px 9px);
  border-bottom: 2px solid var(--plastic-dark);
}
.cart-label {
  background: #fbfaf7;
  color: #241431;
  border-radius: var(--radius-s);
  border-top: 14px solid var(--label);
  padding: 16px 16px 18px;
  min-height: 112px;
  box-shadow: inset 0 0 0 1px rgba(36,20,49,.08);
}
.cart-label h3 { font-size: 1.45rem; font-weight: 700; }
.cart-meta { margin-top: 6px; font-size: .9rem; color: #5d6275; }
.cart-blurb { color: var(--ink); font-size: .95rem; min-height: 3.1em; }
.cart-buy { display: flex; flex-direction: column; gap: 8px; margin-top: auto; }
.cart-result { font-size: .9rem; min-height: 1.4em; }
.cart-result[data-tone="ok"] { color: var(--ok); }
.cart-result[data-tone="warn"] { color: var(--slow); }
.cart-result[data-tone="bad"] { color: var(--down); }

/* --- footer -------------------------------------------------------------- */
.foot {
  border-top: 1px solid var(--line);
  padding: 22px 16px 28px;
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between;
  max-width: 1120px; width: 100%; margin: 0 auto;
  font-size: .9rem; color: var(--steel);
}
.foot p { max-width: 40rem; }
.foot-link { font-weight: 600; color: var(--ink); }

/* --- sign-in ------------------------------------------------------------- */
.signin { max-width: 26rem; padding: 56px 0; }
.signin h1 { font-size: 2.25rem; }
.form { display: flex; flex-direction: column; gap: 8px; margin-top: 28px; }
.form label { font-weight: 600; font-size: .95rem; margin-top: 10px; }
.form input {
  font: 400 1rem var(--body); padding: 11px 12px; min-height: 44px;
  border: 2px solid var(--line); border-radius: var(--radius-s);
  background: var(--card); color: var(--ink);
}
.form input:focus { border-color: var(--ink); outline: none; }
.form .btn { margin-top: 18px; }
.alert { margin-top: 20px; padding: 12px 14px; border-left: 4px solid var(--down);
  background: color-mix(in srgb, var(--down) 10%, var(--card)); }

/* --- break panel --------------------------------------------------------- */
.hero-panel { padding-bottom: 32px; }
.panel-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; align-items: start; }
.scenarios { display: flex; flex-direction: column; border-top: 2px solid var(--ink); }
.scenario {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px; align-items: start;
  padding: 20px 0; border-bottom: 1px solid var(--line);
}
.scenario h2 { font-size: 1.3rem; font-weight: 600; }
.scenario-effect { margin-top: 6px; }
.scenario-expect { margin-top: 6px; font-size: .9rem; color: var(--steel); max-width: 40rem; }
.live { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 16px; }
.live-block { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-m); padding: 18px; }
.live-block h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 14px; }
.lamps-compact { flex-direction: column; gap: 10px; }
.faults { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 18px 0 0; font-size: .9rem; }
.faults dt { color: var(--steel); }
.faults dd { margin: 0; font-weight: 600; }
.faults dd[data-bad="true"] { color: var(--down); }
.panel-msg { margin: 16px 0 12px; font-size: .9rem; min-height: 1.4em; }
.panel-msg[data-tone="bad"] { color: var(--down); }
.panel-msg[data-tone="ok"] { color: var(--ok); }
.hint { margin-top: 8px; font-size: .85rem; color: var(--steel); }
.activity { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: .9rem; }
.activity time { display: block; font-size: .8rem; color: var(--steel); }
.activity .empty { color: var(--steel); }

@media (max-width: 860px) {
  .panel-grid { grid-template-columns: 1fr; }
  .live { position: static; order: -1; }
}
@media (max-width: 520px) {
  .hero { padding-top: 32px; }
  .scenario { grid-template-columns: 1fr; }
  .btn-break { justify-self: start; }
  .who { display: none; }
}