/* =============================================================
   BUSINESS CHALLENGE — Phase 7 (#business-challenge, home page)
   Header + date badges, 4-step "how it works" flow, judging
   criteria, prizes podium (brand-blue tiers), past winners, CTA.
   Theme-aware via tokens; mobile-first.
   ============================================================= */

/* ── Header ──────────────────────────────────────────────────── */
.bc-header { text-align: center; margin-bottom: var(--space-12); }
.bc-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.bc-season {
  font-family: var(--font-mono, monospace);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-white);
  background: var(--color-accent);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}
.bc-desc {
  max-width: 60ch;
  margin: 0 auto var(--space-6);
  font-size: var(--font-size-base);
  color: var(--color-text-medium);
  line-height: var(--line-height-relaxed);
}
.bc-dates {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}
.bc-date-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  box-shadow: var(--shadow-sm);
}
.bc-date-badge__label {
  font-family: var(--font-mono, monospace);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-medium);
}
.bc-date-badge strong { font-size: var(--font-size-lg); color: var(--color-text-dark); }

.bc-subhead {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  color: var(--color-text-dark);
  text-align: center;
  margin: var(--space-16) 0 var(--space-8);
}

/* ── 2 · How it works (vertical mobile → horizontal desktop) ─── */
.bc-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.bc-step { text-align: center; }
.bc-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--space-3);
}
.bc-step__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  color: var(--color-text-dark);
  margin-bottom: var(--space-1);
}
.bc-step__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  line-height: var(--line-height-normal);
  max-width: 30ch;
  margin-inline: auto;
}

/* ── 3 · Judging criteria (thin coloured top border per card) ── */
.bc-criteria {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
.bc-criterion {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.bc-criterion--0 { border-top-color: var(--color-accent); }
.bc-criterion--1 { border-top-color: var(--color-accent-hover); }
.bc-criterion--2 { border-top-color: var(--color-primary); }
.bc-criterion--3 { border-top-color: var(--color-primary-light); }
.bc-criterion--4 { border-top-color: var(--color-accent); }
.bc-criterion__weight {
  display: block;
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  line-height: 1;
}
.bc-criterion__name {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  color: var(--color-text-dark);
  margin: var(--space-2) 0 var(--space-1);
}
.bc-criterion__desc { font-size: var(--font-size-sm); color: var(--color-text-medium); line-height: var(--line-height-normal); }

/* ── 4 · Prizes podium (brand-blue tiers) ────────────────────── */
.bc-prizes {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: stretch;
}
.bc-prize {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.bc-prize--1 {
  border-top-color: var(--color-accent);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(27,110,243,0.25);
}
.bc-prize--2 { border-top-color: var(--color-primary-light); }
.bc-prize--3 { border-top-color: var(--color-primary); }
.bc-prize__rank {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.bc-prize--1 .bc-prize__rank { font-size: var(--font-size-base); }
.bc-prize__value { font-size: var(--font-size-lg); color: var(--color-text-dark); font-weight: var(--font-weight-semibold); }

/* ── 5 · Past winners ────────────────────────────────────────── */
.bc-winners {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
.bc-winner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.bc-winner__photo {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-background-mid));
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}
.bc-winner__photo img { width: 100%; height: 100%; object-fit: cover; }
.bc-winner__team {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  color: var(--color-text-dark);
  padding: var(--space-5) var(--space-5) 0;
}
.bc-winner__meta {
  font-family: var(--font-mono, monospace);
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  padding: var(--space-1) var(--space-5) 0;
}
.bc-winner__built,
.bc-winner__outcome {
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  line-height: var(--line-height-normal);
  padding: var(--space-2) var(--space-5) 0;
}
.bc-winner__outcome { padding-bottom: var(--space-6); font-weight: var(--font-weight-semibold); color: var(--color-text-dark); }

/* ── 6 · CTA ─────────────────────────────────────────────────── */
.bc-cta { text-align: center; margin-top: var(--space-12); }
.bc-cta .btn { padding: var(--space-4) var(--space-12); }

/* Placeholder chip */
.bc-tba { color: var(--color-text-medium); }

/* ── Breakpoints ─────────────────────────────────────────────── */
@media (min-width: 640px) {
  .bc-criteria { grid-template-columns: repeat(2, 1fr); }
  .bc-prizes   { grid-template-columns: repeat(3, 1fr); }
  .bc-winners  { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 768px) {
  /* Horizontal step flow with a connecting line between numbers */
  .bc-steps { flex-direction: row; }
  .bc-step  { position: relative; flex: 1; }
  .bc-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 24px;                 /* centre of the 48px number circle */
    left: calc(50% + 32px);
    right: calc(-50% + 32px);
    height: 2px;
    background: var(--color-border);
    z-index: 0;
  }
  .bc-step__num { position: relative; z-index: 1; }
  .bc-criteria { grid-template-columns: repeat(4, 1fr); }
  /* Elevate the 1st-place card into a podium */
  .bc-prize--1 { transform: translateY(-12px); }
}

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .bc-prize--1 { transform: none; }
}

/* ═══════════════════════════════════════════════════════════════
   Challenge submission form  (/programs/business-challenge/submit)
   ═══════════════════════════════════════════════════════════════
   Entries are links, not uploads, so the page is mostly a stack of
   URL fields plus the sharing-permissions checklist beside them.

   The site's --color-error (#ef4444) is only ~3.8:1 on white, under
   the 4.5:1 AA rule for body text, so message text uses darker
   variants here and lighter ones in dark mode — the same approach
   as the status pills in admin.css.
   ------------------------------------------------------------- */
:root {
  --submit-error:   #b91c1c;
  --submit-warning: #92400e;
}
:root[data-theme="dark"] {
  --submit-error:   #fca5a5;
  --submit-warning: #fcd34d;
}

/* ── Field helpers ───────────────────────────────────────────── */
.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: var(--space-2);
}
.form-error,
.form-warning {
  font-size: var(--text-xs);
  line-height: 1.6;
  margin-top: var(--space-2);
  font-weight: 600;
}
.form-error   { color: var(--submit-error); }
.form-warning { color: var(--submit-warning); }

.form-optional {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.submit-error-summary {
  border-left: 3px solid var(--submit-error);
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

textarea.form-input {
  resize: vertical;
  min-height: 96px;
  font-family: inherit;
}

/* ── Layout: one column on mobile, form + aside on desktop ───── */
.submit-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: start;
}
.submit-aside {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ── The permissions checklist — the whole point of the aside ── */
.submit-checklist,
.submit-deadline {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.submit-checklist__label,
.submit-deadline__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-electric-bright);
  margin-bottom: var(--space-3);
}
.submit-checklist__lead {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}
.submit-checklist__list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.submit-checklist__list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  padding-left: var(--space-4);
  position: relative;
}
.submit-checklist__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-electric-bright);
}
.submit-checklist__list strong { color: var(--color-text-primary); }

/* ── Deadline card ───────────────────────────────────────────── */
.submit-deadline__label { color: var(--color-cta); }
.submit-deadline__date {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}
.submit-deadline__days {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cta);
  margin-bottom: var(--space-3);
}
.submit-deadline__note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── Closed / not-yet-open state ─────────────────────────────── */
.submit-closed {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 60ch;
}
.submit-closed__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}
.submit-closed__body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}
.submit-closed__body strong { color: var(--color-text-primary); }

/* ── Duplicate-submission confirm (register / waitlist / submit) ─ */
.duplicate-confirm__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

/* ── Receipt: the links echoed back, clickable ───────────────── */
.submit-receipt__project {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}
.submit-receipt__team {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.submit-receipt {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.submit-receipt__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.submit-receipt__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-text-muted);
}
.submit-receipt__link {
  font-size: var(--text-sm);
  color: var(--color-electric-bright);
  text-decoration: underline;
  /* URLs are long and arbitrary — never let one push the page sideways */
  overflow-wrap: anywhere;
}
.submit-receipt__link:hover,
.submit-receipt__link:focus-visible { color: var(--color-cta); }

@media (min-width: 900px) {
  .submit-layout { grid-template-columns: 1.6fr 1fr; }
}