/* NDPC 2027 — palette drawn from the conference flyer */

:root {
  --black: #000000;
  --surface: #121212;
  --surface-2: #1c1c1c;
  --gold: #F5B800;
  --gold-bright: #FFD34D;
  --white: #FFFFFF;
  --body: #F2F2F2;
  --muted: #CFCFCF;
  --red: #D62828;
  --red-bright: #FF6B5E;
  --green: #4C7A34;
  --green-bright: #7FD25C;
  --border: #3A3A3A;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif;

  --wrap: 1080px;
  --space: 1rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--black);
  color: var(--body);
  font-family: var(--font);
  font-size: 1rem;          /* 16px minimum */
  line-height: 1.65;
}

/* Keyboard focus is always visible, on every interactive element. */
:focus-visible {
  outline: 3px solid var(--gold-bright);
  outline-offset: 3px;
  border-radius: 2px;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--gold-bright); }
a:hover { color: var(--white); }

h1, h2, h3, h4 {
  color: var(--gold);
  line-height: 1.2;
  margin: 0 0 0.6em;
  font-weight: 800;
}

h1 { font-size: clamp(1.75rem, 5vw, 2.75rem); }
h2 { font-size: clamp(1.35rem, 3.6vw, 1.9rem); }
h3 { font-size: clamp(1.1rem, 2.8vw, 1.35rem); }

p { margin: 0 0 1.1em; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--space);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--gold);
  color: var(--black);
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
  color: var(--black);
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 3px solid var(--gold);
  background: var(--surface);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  flex-wrap: wrap;
}

.site-logo {
  width: 76px;
  height: auto;
  background: var(--white);
  border-radius: 50%;
  padding: 4px;
  flex: 0 0 auto;
}

.brand-text { flex: 1 1 12rem; min-width: 0; }

.site-name {
  margin: 0;
  font-size: clamp(1.4rem, 4.5vw, 2rem);
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.site-tagline {
  margin: 0.15rem 0 0;
  color: var(--white);
  font-style: italic;
  font-size: 1rem;
}

.nav-toggle {
  display: none;
  background: transparent;
  color: var(--gold);
  border: 2px solid var(--gold);
  border-radius: 6px;
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
}
.nav-toggle:hover { background: var(--gold); color: var(--black); }

.nav-toggle-bars {
  display: inline-block;
  margin-right: 0.5rem;
  line-height: 1;
}

/* ---------- Nav ---------- */

.site-nav {
  background: var(--black);
  border-bottom: 1px solid var(--border);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.nav-list a {
  display: block;
  padding: 0.85rem 1rem;
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 4px solid transparent;
}

.nav-list a:hover {
  color: var(--gold-bright);
  border-bottom-color: var(--red-bright);
}

.nav-list a[aria-current="page"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- Main ---------- */

main { padding: 2.5rem 0 3rem; }

.lede {
  font-size: 1.15rem;
  color: var(--white);
}

.subhead {
  color: var(--white);
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 600;
  margin-top: -0.4em;
}

.theme-line {
  color: var(--gold);
  font-style: italic;
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-weight: 700;
  border-left: 5px solid var(--red);
  padding-left: 0.9rem;
  margin: 1.5rem 0;
}

section { margin-bottom: 2.5rem; }

.facts {
  margin: 0 0 2rem;
  display: grid;
  gap: 1rem;
}

@media (min-width: 620px) {
  .facts { grid-template-columns: 1fr 1fr; }
}

.facts > div {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 5px solid var(--green);
  padding: 1rem 1.1rem;
}

.facts dt {
  color: var(--gold);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.facts dd { margin: 0; color: var(--white); }

/* ---------- Buttons ---------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
  border-radius: 6px;
  border: 3px solid var(--gold);
  background: var(--gold);
  color: var(--black);
}
.btn:hover {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  color: var(--black);
}

.btn-secondary {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}
.btn-secondary:hover {
  background: var(--gold);
  color: var(--black);
}

/* ---------- Flyer ---------- */

.flyer {
  margin: 2rem 0 0;
}

.flyer img {
  margin: 0 auto;
  border: 3px solid var(--gold);
  max-width: 640px;
  width: 100%;
}

.flyer figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
  text-align: center;
}

/* ---------- Tables ---------- */

.table-scroll {
  overflow-x: auto;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 32rem;
  background: var(--surface);
}

caption {
  caption-side: top;
  text-align: left;
  color: var(--gold);
  font-weight: 800;
  font-size: 1.15rem;
  padding: 0.85rem 1rem;
  background: var(--surface-2);
  border-bottom: 2px solid var(--gold);
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

thead th {
  color: var(--gold);
  background: var(--surface-2);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tbody th {
  color: var(--white);
  font-weight: 700;
}

tbody tr:last-child th,
tbody tr:last-child td { border-bottom: none; }

td { color: var(--body); }

.amount { color: var(--gold-bright); font-weight: 700; white-space: nowrap; }

/* ---------- Schedule ---------- */

.schedule {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
}

.schedule li {
  background: var(--surface);
  border-left: 5px solid var(--gold);
  padding: 0.85rem 1.1rem;
  margin-bottom: 0.6rem;
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 600;
}

/* ---------- Notes & callouts ---------- */

.note {
  background: var(--surface);
  border-left: 5px solid var(--red);
  padding: 1rem 1.1rem;
  margin: 0 0 1.25rem;
  color: var(--white);
}

.callout {
  border: 3px solid var(--gold);
  background: var(--surface);
  padding: 1.25rem 1.35rem;
  margin: 2rem 0;
}

.callout h2 { margin-top: 0; }

.subtotal {
  color: var(--white);
  border-left: 5px solid var(--green);
  background: var(--surface);
  padding: 1rem 1.1rem;
}

.signoff {
  color: var(--white);
  font-weight: 700;
  font-style: normal;
  margin-top: 1.5rem;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 3px solid var(--gold);
  background: var(--surface);
  padding: 2rem 0;
  margin-top: 2rem;
}

.footer-motto {
  color: var(--gold);
  font-weight: 800;
  text-align: center;
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.footer-contact {
  text-align: center;
  color: var(--white);
  margin: 0;
}

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }

  .site-nav { border-bottom: none; }

  .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav.is-open .nav-list { display: flex; }

  .nav-list li { border-top: 1px solid var(--border); }

  .nav-list a {
    padding: 0.95rem 1rem;
    border-bottom: none;
    border-left: 5px solid transparent;
  }

  .nav-list a:hover { border-bottom: none; border-left-color: var(--red-bright); }

  .nav-list a[aria-current="page"] {
    border-bottom: none;
    border-left-color: var(--gold);
  }
}

@media (max-width: 400px) {
  .site-logo { width: 56px; }
  .actions .btn { width: 100%; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}