/* =============================================================================
   I4PL Conference 2026 - Sponsorship page
   -----------------------------------------------------------------------------
   Every control sits at or above the 16px floor, every input has a 48px+ target,
   and focus states are visible on both light and dark grounds.
   ============================================================================= */

/* --- Proof and reach numbers --------------------------------------------- */
.proof-band { padding: 3rem 0; background: var(--ink); color: var(--muted-dark); }
.proof-band .section-title { color: var(--white); }
.proof-band .section-lead, .proof-band .eyebrow { color: var(--muted-dark); }
.proof-band .eyebrow { color: var(--cyan); }

.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.stat {
  padding: 1.35rem 1.15rem;
  background: rgba(255, 255, 255, .07);
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
}
.stat-num {
  display: block;
  font-size: clamp(2rem, 1.5rem + 2.2vw, 3rem);
  font-weight: 900; line-height: 1; letter-spacing: -.04em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.stat-lbl {
  display: block; margin-top: .6rem;
  font-size: var(--t-small); font-weight: 700; color: var(--white);
  line-height: 1.35;
}

/* --- Audience ------------------------------------------------------------ */
.audience-band { padding: 3rem 0; background: var(--paper-2); }
.audience-grid { display: grid; gap: 2.5rem; }
.sub-h { font-size: var(--t-h3); letter-spacing: -.02em; margin-bottom: 1rem; }

.who-list { display: grid; gap: .85rem; margin-top: 1.5rem; }
.who-list li {
  position: relative; padding-left: 2rem;
  font-size: var(--t-body); font-weight: 600;
}
.who-list li::before {
  content: ""; position: absolute; left: 0; top: .45em;
  width: 1.05rem; height: .55rem;
  border-left: 3px solid var(--cyan); border-bottom: 3px solid var(--cyan);
  transform: rotate(-45deg);
}
.sector-list { display: flex; flex-wrap: wrap; gap: .6rem; }
.sector {
  padding: .55rem .95rem; border-radius: 999px;
  background: var(--white); border: 1px solid var(--line);
  font-size: var(--t-small); font-weight: 700; color: var(--body);
}

/* --- Tiers --------------------------------------------------------------- */
.tiers-band { padding: 3rem 0; }
.tier-stack { display: grid; gap: 1.25rem; }
.tier {
  padding: 1.75rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 6px solid var(--muted);
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  scroll-margin-top: 7rem;
}
.tier-maroon { border-top-color: var(--maroon); }
.tier-navy   { border-top-color: var(--navy); }
.tier-blue   { border-top-color: var(--blue); }
.tier-cyan   { border-top-color: var(--cyan); }
.tier-slate  { border-top-color: var(--muted); }

.tier-head { display: grid; gap: 1rem; margin-bottom: 1.5rem; }
.tier-name { font-size: var(--t-h2); letter-spacing: -.03em; }
.tier-lead { margin-top: .6rem; max-width: 52ch; color: var(--muted); }
.tier-price { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem .7rem; }
.tier-amt {
  font-size: clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem);
  font-weight: 900; letter-spacing: -.04em; color: var(--navy);
  font-variant-numeric: tabular-nums;
}
.tier-cur { font-size: var(--t-small); font-weight: 700; color: var(--muted); }
.tier-avail {
  padding: .25rem .65rem; border-radius: .4rem;
  background: var(--paper-2);
  font-size: var(--t-small); font-weight: 800;
  letter-spacing: .04em; text-transform: uppercase; color: var(--muted);
}

.tier-body { display: grid; gap: 1.5rem; }
.tier-group-h {
  margin-bottom: .75rem;
  font-size: var(--t-small); font-weight: 800;
  letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
}
.tier-list { display: grid; gap: .55rem; }
.tier-list li {
  position: relative; padding-left: 1.3rem;
  font-size: var(--t-small); font-weight: 600;
}
.tier-list li::before {
  content: ""; position: absolute; left: 0; top: .58em;
  width: .45rem; height: .45rem; border-radius: 50%; background: var(--cyan);
}
.tier-cta { margin-top: 1.5rem; }

/* --- Signature events ---------------------------------------------------- */
.sig-band { padding: 3rem 0; background: var(--ink-2); color: var(--muted-dark); }
.sig-band .section-title { color: var(--white); }
.sig-band .section-lead { color: var(--muted-dark); }
.sig-band .eyebrow { color: var(--cyan); }
.sig-grid { display: grid; gap: 1.25rem; }
.sig {
  padding: 1.75rem 1.5rem;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
}
.sig-top { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1rem; }
.sig-name { font-size: var(--t-h3); letter-spacing: -.02em; color: var(--white); }
.sig-price {
  font-size: 1.5rem; font-weight: 900; color: var(--cyan);
  letter-spacing: -.03em; font-variant-numeric: tabular-nums;
}
.sig-avail {
  margin: .5rem 0 .9rem;
  font-size: var(--t-small); font-weight: 800;
  letter-spacing: .06em; text-transform: uppercase; color: var(--cyan);
}

/* --- Add-ons and non-booth ----------------------------------------------- */
.addons-grid { display: grid; gap: 2.5rem; }
.ao-wrap {
  margin-top: 1.5rem;
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden; box-shadow: var(--sh-1);
}
.ao-table { width: 100%; border-collapse: collapse; }
.ao-table thead th {
  padding: .9rem 1.1rem;
  background: var(--paper-2);
  font-size: var(--t-small); font-weight: 800;
  letter-spacing: .06em; text-transform: uppercase;
  color: var(--muted); text-align: left;
}
.ao-table tbody tr { border-top: 1px solid var(--line); }
.ao-table th[scope="row"] {
  padding: .9rem 1.1rem; text-align: left;
  font-size: var(--t-small); font-weight: 700; color: var(--ink);
}
.ao-table td { padding: .9rem 1.1rem; font-size: var(--t-small); }
.ao-price { font-weight: 800; color: var(--navy); white-space: nowrap; }
.ao-qty { color: var(--muted); text-align: right; }

.nb-stack { display: grid; gap: 1rem; margin-top: 1.5rem; }
.nb {
  padding: 1.35rem 1.25rem;
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--r);
}
.nb-name { font-size: var(--t-body); font-weight: 900; letter-spacing: -.01em; }
.nb-price { margin: .35rem 0 .5rem; font-size: 1.25rem; font-weight: 900; color: var(--navy); }
.nb-body { font-size: var(--t-small); color: var(--muted); }

/* --- Terms --------------------------------------------------------------- */
.terms-band { padding: 3rem 0; background: var(--paper-2); }
.term-grid { display: grid; gap: 1.25rem; }
.term {
  padding: 1.5rem 1.35rem;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
}
.term-h { margin-bottom: .6rem; font-size: var(--t-body); font-weight: 900; }
.term p { font-size: var(--t-small); color: var(--body); }

/* --- Enquiry form -------------------------------------------------------- */
.enquiry-band { padding: 3rem 0; background: var(--ink); color: var(--muted-dark); }
.enquiry-band .section-title { color: var(--white); }
.enquiry-band .eyebrow { color: var(--cyan); }
.enquiry-grid { display: grid; gap: 2.5rem; }
.enquiry-lead { margin-top: 1.25rem; font-size: var(--t-lead); max-width: 46ch; }
.enquiry-mail { margin-top: 1.25rem; font-size: var(--t-small); }
.enquiry-mail a { color: var(--cyan); font-weight: 700; }

.enquiry-form {
  padding: 1.75rem 1.5rem;
  background: var(--white);
  border-radius: var(--r);
  box-shadow: var(--sh-3);
  display: grid; gap: 1.15rem;
}
.f-row { display: grid; gap: .45rem; }
.f-two { display: grid; gap: 1.15rem; }
.f-lab { font-size: var(--t-small); font-weight: 800; color: var(--ink); }
.f-req { color: var(--maroon); margin-left: .15rem; }
.f-in {
  width: 100%;
  min-height: 3.25rem;              /* 52px target, above the 44px minimum */
  padding: .8rem 1rem;
  border: 2px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--paper);
  color: var(--body);
  font-family: var(--font);
  font-size: var(--t-body);         /* 17px: never shrink form text */
  font-weight: 600;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}
.f-in:hover { border-color: rgba(11, 27, 51, .3); }
.f-in:focus { outline: 3px solid var(--focus); outline-offset: 2px; background: var(--white); }
.f-in::placeholder { color: var(--muted); font-weight: 500; }
.f-area { min-height: 9rem; resize: vertical; line-height: 1.55; }
select.f-in { appearance: none; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
                    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 1.25rem) 55%, calc(100% - .95rem) 55%;
  background-size: .38rem .38rem, .38rem .38rem;
  background-repeat: no-repeat;
  padding-right: 2.75rem;
}
.f-in.is-invalid { border-color: var(--maroon); background: rgba(138, 35, 79, .05); }
.f-hint { font-size: var(--t-small); color: var(--muted); }

/* Honeypot: removed from view and from assistive tech, still fillable by bots. */
.f-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.f-submit { width: 100%; margin-top: .25rem; }
.f-submit[disabled] { opacity: .6; cursor: progress; transform: none; }

.f-status { margin: 0; font-size: var(--t-small); font-weight: 700; }
.f-status:empty { display: none; }
/* A blocking message must persist, not flash past: these stay until resolved. */
.f-status.is-error { color: #8a234f; padding: .85rem 1rem; border-left: 4px solid var(--maroon); background: rgba(138, 35, 79, .08); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.f-status.is-ok    { color: #015b57; padding: .85rem 1rem; border-left: 4px solid var(--cyan); background: rgba(3, 186, 178, .1); border-radius: 0 var(--r-sm) var(--r-sm) 0; font-size: var(--t-body); }
.f-status.is-busy  { color: var(--muted); }
.f-privacy { margin: 0; font-size: var(--t-small); color: var(--muted); }

@media (min-width: 40rem) {
  .stat-grid { grid-template-columns: repeat(4, 1fr); }
  .f-two { grid-template-columns: 1fr 1fr; }
  .sig-grid, .term-grid { grid-template-columns: repeat(2, 1fr); }
  .tier, .enquiry-form { padding: 2rem; }
}

@media (min-width: 62rem) {
  .proof-band, .audience-band, .tiers-band, .sig-band, .terms-band, .enquiry-band { padding: 5rem 0; }
  .audience-grid { grid-template-columns: 1.2fr .8fr; gap: 4rem; align-items: start; }
  .addons-grid { grid-template-columns: 1.25fr .75fr; gap: 3rem; align-items: start; }
  .tier { padding: 2.5rem; }
  .tier-head { grid-template-columns: 1fr auto; align-items: start; gap: 2rem; }
  .tier-price { flex-direction: column; align-items: flex-end; text-align: right; }
  .tier-body { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
  .sig-grid { grid-template-columns: repeat(3, 1fr); }
  .term-grid { grid-template-columns: repeat(3, 1fr); }
  .enquiry-grid { grid-template-columns: .85fr 1.15fr; gap: 4rem; align-items: start; }
  .enquiry-form { padding: 2.5rem; }
  .f-submit { width: auto; justify-self: start; padding-inline: 2.5rem; }
}

/* --- Reach --------------------------------------------------------------- */
.reach-band { padding: 3rem 0; background: var(--navy); color: var(--muted-dark); }
.reach-band .section-title { color: var(--white); }
.reach-band .section-lead { color: var(--muted-dark); }
/* --cyan measures only 4.09:1 on the navy ground. The brighter cyan is
   6.16:1 and stays on brand. */
.reach-band .eyebrow { color: var(--cyan-bright); }
.stat-grid-dark .stat { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .22); }

@media (min-width: 62rem) { .reach-band { padding: 5rem 0; } }