/* ==========================================================================
   Hotbox Academy — Components
   Panels, the receipt, buttons, pills, readouts, progress, forms, tables,
   callouts, toast. Depends on tokens.css and base.css.
   ========================================================================== */

/* ---- Panel ("card"): a steel panel. Used only for machine-like objects. ---- */
.card {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: var(--s-5);
}
.card--raised { background: var(--bg-2); box-shadow: var(--shadow-card); }
.card--tight { padding: var(--s-4); }
.card--flush { padding: 0; overflow: hidden; }
.card__head { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); margin-bottom: var(--s-4); }
a.card { color: var(--fg); text-decoration: none; transition: border-color var(--dur-fast), background var(--dur-fast); }
a.card:hover { border-color: var(--line-strong); background: var(--bg-2); }

/* ---- The receipt: thermal paper, typewriter print, torn bottom edge ---- */
.receipt {
  position: relative;
  width: 100%;
  background: var(--paper);
  color: var(--paper-ink);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.5;
  padding: 1.4rem 1.3rem 2rem;
  border-radius: 2px 2px 0 0;
  box-shadow: var(--shadow-paper);
  /* fine paper grain */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.1' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.2 0 0 0 0 0.18 0 0 0 0 0.12 0 0 0 0.07 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  /* torn edge */
  -webkit-mask-image: linear-gradient(#000, #000), url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='10' viewBox='0 0 16 10'><path d='M0 0 L8 10 L16 0 Z' fill='black'/></svg>");
  -webkit-mask-size: 100% calc(100% - 10px), 16px 10px;
  -webkit-mask-position: top, bottom;
  -webkit-mask-repeat: no-repeat, repeat-x;
  mask-image: linear-gradient(#000, #000), url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='10' viewBox='0 0 16 10'><path d='M0 0 L8 10 L16 0 Z' fill='black'/></svg>");
  mask-size: 100% calc(100% - 10px), 16px 10px;
  mask-position: top, bottom;
  mask-repeat: no-repeat, repeat-x;
}
.receipt__title { font-weight: 700; font-size: 0.95rem; letter-spacing: 0.04em; text-transform: uppercase; }
.receipt__meta { color: var(--paper-faint); margin-top: 0.15rem; }
.receipt__rule { border: 0; border-top: 1px dashed rgba(29, 31, 34, 0.35); margin: 0.7rem 0; }
.receipt__rule--double { border-top: 3px double rgba(29, 31, 34, 0.5); }
.receipt__row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.12rem 0; }
.receipt__row span:last-child { font-variant-numeric: tabular-nums; white-space: nowrap; }
.receipt__row--sub { color: #4a4d52; }
.receipt__row--total { font-weight: 700; }
.receipt__row--hero { font-weight: 700; font-size: 1.05rem; margin-top: 0.3rem; }
.receipt__note { color: var(--paper-faint); font-size: 0.78rem; margin-top: 0.6rem; }
/* Print-on-load: rows appear top to bottom (marketing/main.js adds .is-printing). */
.receipt.is-printing .receipt__row, .receipt.is-printing .receipt__rule, .receipt.is-printing .receipt__note, .receipt.is-printing .receipt__title, .receipt.is-printing .receipt__meta { animation: print 240ms steps(2, end) both; animation-delay: calc(var(--i, 0) * 110ms); }
@keyframes print { from { opacity: 0; } to { opacity: 1; } }

/* ---- Wordmark ---- */
.wordmark { display: inline-flex; align-items: center; gap: 0.7rem; font-weight: 700; font-stretch: var(--display-stretch); text-transform: uppercase; font-size: 1.05rem; letter-spacing: 0.02em; text-decoration: none; color: var(--fg); white-space: nowrap; }
.wordmark__logo { width: 34px; height: 34px; border-radius: 50%; flex: none; display: block; }
.wordmark__logo--lg { width: 52px; height: 52px; }

/* ---- Buttons: rectangular, machined. One solid per view. ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  min-height: 48px;
  padding: 0.7rem 1.4rem;
  font: inherit; font-weight: 600; font-size: var(--t-sm); letter-spacing: 0.01em;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-md);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast), color var(--dur-fast), box-shadow var(--dur-med) var(--ease);
}
.btn:hover { border-color: var(--fg); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { color: var(--on-light); background: var(--white); border-color: var(--white); }
.btn--primary:hover { background: #ffffff; }
.btn--accent { color: #ffffff; background: var(--neon); border-color: var(--neon); }
.btn--accent:hover { background: var(--accent-hover); box-shadow: var(--neon-glow); }
.btn--ghost { border-color: transparent; color: var(--fg-dim); }
.btn--ghost:hover { color: var(--fg); border-color: transparent; background: var(--bg-2); }
.btn--sm { min-height: 38px; padding: 0.4rem 0.9rem; font-size: var(--t-xs); }
.btn--lg { min-height: 56px; padding: 0.9rem 1.8rem; font-size: var(--t-md); }
.btn--block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }

/* Text link with a quiet underline, for secondary actions. */
.link { color: var(--fg); text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--rule-strong); font-weight: 500; }
.link:hover { text-decoration-color: var(--fg); }

/* ---- Pills ---- */
.pill {
  display: inline-flex; align-items: center; gap: 0.4em;
  padding: 0.25em 0.6em;
  font-size: var(--t-2xs); font-weight: 600; font-stretch: var(--wide-stretch);
  color: var(--fg-dim);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  white-space: nowrap;
}
.pill--accent { color: var(--neon-hot); border-color: rgba(var(--neon-rgb), 0.5); }
.pill--ok { color: var(--ok); border-color: rgba(74, 222, 128, 0.45); }
.pill--warn { color: var(--warn); border-color: rgba(251, 191, 36, 0.45); }
.pill--bad { color: var(--bad); border-color: rgba(248, 113, 113, 0.45); }

/* ---- Readouts and KPIs (printed numbers) ---- */
.readout { display: grid; gap: var(--s-1); }
.readout__value { font-family: var(--font-mono); font-size: clamp(var(--t-xl), 3vw, var(--t-2xl)); font-weight: 700; line-height: 1.05; font-variant-numeric: tabular-nums; }
.readout__value--accent { color: var(--neon-hot); }
.readout__value--bad { color: var(--bad); }
.kpi { display: grid; gap: var(--s-1); min-width: 0; }
.kpi__v { font-family: var(--font-mono); font-size: var(--t-xl); font-weight: 700; line-height: 1.05; font-variant-numeric: tabular-nums; }
.kpi__v--accent { color: var(--neon-hot); }

/* ---- Progress ---- */
.bar { height: 3px; background: var(--bg-3); border-radius: 0; overflow: hidden; }
.bar__fill { height: 100%; width: 0; background: var(--neon); box-shadow: 0 0 8px rgba(var(--neon-rgb), 0.8); transition: width var(--dur-slow) var(--ease-out); }
.ring { position: relative; width: 64px; height: 64px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring__track { fill: none; stroke: var(--bg-3); stroke-width: 3; }
.ring__fill { fill: none; stroke: var(--neon); stroke-width: 3; stroke-linecap: butt; stroke-dasharray: 169.6; stroke-dashoffset: calc(169.6 - 169.6 * var(--p, 0) / 100); transition: stroke-dashoffset var(--dur-slow) var(--ease-out); filter: drop-shadow(0 0 4px rgba(var(--neon-rgb), 0.8)); }
.ring__label { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--font-mono); font-size: var(--t-xs); font-weight: 700; color: var(--fg); }

/* ---- Forms ---- */
.field { display: grid; gap: var(--s-2); }
.field > label { font-size: var(--t-sm); font-weight: 500; color: var(--fg-dim); }
.field__hint { font-weight: 400; color: var(--fg-faint); }
.input, .select, textarea.input {
  width: 100%; min-height: 46px;
  padding: 0.6rem 0.85rem;
  font: inherit; font-family: var(--font-mono); font-size: var(--t-md); font-variant-numeric: tabular-nums;
  color: var(--fg); background: var(--bg-0);
  border: 1px solid var(--line-strong); border-radius: var(--r-sm);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.select { font-family: var(--font-sans); }
textarea.input { min-height: 72px; resize: vertical; font-family: var(--font-sans); }
.input:focus, .select:focus { outline: none; border-color: var(--neon); box-shadow: 0 0 0 3px var(--accent-soft); }
.select { appearance: none; padding-right: 2.2rem; background-image: linear-gradient(45deg, transparent 50%, var(--fg-dim) 50%), linear-gradient(135deg, var(--fg-dim) 50%, transparent 50%); background-position: calc(100% - 18px) 55%, calc(100% - 13px) 55%; background-size: 5px 5px; background-repeat: no-repeat; }
.field--inline { display: grid; grid-template-columns: 1fr auto; gap: var(--s-3); align-items: center; }
.field--inline > label { color: var(--fg); font-weight: 500; }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: var(--r-md); }
table { width: 100%; border-collapse: collapse; font-size: var(--t-sm); }
th, td { padding: 0.7rem 0.85rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { font-size: var(--t-xs); font-weight: 600; font-stretch: var(--wide-stretch); color: var(--fg-dim); background: var(--bg-2); }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---- Callouts (lesson blocks) ---- */
.callout { padding: var(--s-4) var(--s-5); border-radius: var(--r-md); background: var(--bg-1); border: 1px solid var(--line); }
.callout__title { display: block; margin-bottom: var(--s-3); font-size: var(--t-xs); font-weight: 600; font-stretch: var(--wide-stretch); color: var(--fg-dim); }
.callout--objective { background: var(--bg-2); }
.callout--action { border-color: rgba(var(--neon-rgb), 0.45); background: linear-gradient(180deg, rgba(var(--neon-rgb), 0.12), rgba(var(--neon-rgb), 0.04)); }
.callout--action .callout__title { color: var(--neon-hot); }
.callout--note { color: var(--fg-dim); }

/* ---- Segmented control ---- */
.segmented { display: inline-flex; flex-wrap: wrap; gap: 2px; padding: 3px; background: var(--bg-0); border: 1px solid var(--line); border-radius: var(--r-md); }
.segmented button { font: inherit; font-size: var(--t-sm); font-weight: 500; padding: 0.4rem 0.85rem; background: transparent; color: var(--fg-dim); border: 0; border-radius: var(--r-sm); cursor: pointer; }
.segmented button.is-on { background: var(--bg-3); color: var(--fg); }

/* ---- Ordered list for real sequences (steps, phases) ---- */
.index-list { list-style: none; padding: 0; margin: 0; display: grid; }
.index-list > li { display: grid; grid-template-columns: 3.2rem 1fr; gap: var(--s-4); padding: var(--s-5) 0; border-top: 1px solid var(--line); margin: 0; }
.index-list > li:last-child { border-bottom: 1px solid var(--line); }
.index-list__n { font-stretch: var(--display-stretch); font-weight: 800; font-size: var(--t-xl); line-height: 1; color: var(--fg-faint); padding-top: 0.1em; font-variant-numeric: tabular-nums; }
.index-list h4 { margin-bottom: var(--s-2); }
.index-list p { color: var(--fg-dim); max-width: 60ch; }

/* ---- Toast ---- */
.toast {
  position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom, 0px) + 20px);
  transform: translateX(-50%);
  padding: 0.6rem 1rem; font-size: var(--t-sm); font-weight: 600;
  background: var(--white); color: var(--on-light); border-radius: var(--r-md);
  box-shadow: var(--shadow-float); z-index: 50;
}