/* =========================================================================
   Challenge Cup Air Rally — style.css
   Vintage-aviation theme: brass/gold, rust, parchment, ink.
   Reconstructed stylesheet. All layout is plain CSS grid/flex, no framework.
   ========================================================================= */

:root {
  /* Palette */
  --ink:        #1c2530;   /* primary text — deep aviation navy/charcoal */
  --ink-soft:   #45525f;   /* secondary text */
  --paper:      #faf6ec;   /* page background — warm parchment */
  --paper-alt:  #f1e9d2;   /* alt section / cream */
  --panel-bg:   #ffffff;   /* cards */
  --gold:       #b8862b;   /* brass / gold accent */
  --gold-deep:  #8a631d;   /* darker gold for hover/borders */
  --rust:       #a4442c;   /* rust — primary CTA */
  --rust-deep:  #833421;
  --line:       #e2d8bf;   /* hairline / borders on cream */
  --line-soft:  #ece4cf;
  --navy:       #142130;   /* header & footer band */
  --navy-2:     #1d3145;

  /* Type */
  --font-head: "Georgia", "Times New Roman", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Metrics */
  --wrap: 1120px;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20,33,48,.06), 0 8px 24px rgba(20,33,48,.07);
  --shadow-lg: 0 12px 40px rgba(20,33,48,.14);
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--rust); text-decoration-color: rgba(164,68,44,.35); text-underline-offset: 2px; }
a:hover { color: var(--rust-deep); }

h1, h2, h3, h4 { font-family: var(--font-head); color: var(--ink); line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -.01em; margin: 0 0 .5rem; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); margin: 0 0 .75rem; }
h3 { font-size: 1.25rem; margin: 0 0 .5rem; }
h4 { font-size: 1rem; letter-spacing: .02em; margin: 0 0 .4rem; }
p  { margin: 0 0 1rem; color: var(--ink-soft); }
p:last-child { margin-bottom: 0; }
ul { color: var(--ink-soft); }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--navy); color: #fff; padding: .7rem 1rem; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }
section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.section-alt { background: var(--paper-alt); border-block: 1px solid var(--line); }

.grid { display: grid; gap: 1.75rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.divider { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

.section-head { max-width: 720px; margin-bottom: 2rem; }
.kicker {
  font-family: var(--font-body); font-weight: 700; text-transform: uppercase;
  letter-spacing: .14em; font-size: .78rem; color: var(--gold-deep);
}

/* ============================ HEADER / NAV ============================ */
.site-header {
  background: var(--navy);
  color: #fff;
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 0 rgba(0,0,0,.25), 0 6px 18px rgba(20,33,48,.18);
  border-bottom: 3px solid var(--gold);
}
.header-inner {
  max-width: var(--wrap); margin-inline: auto; padding: .7rem 20px;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.brand-block { display: flex; align-items: center; gap: .8rem; margin-right: auto; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-text {
  display: flex; flex-direction: column; line-height: 1.05;
  font-family: var(--font-head); font-weight: 700; color: #fff;
  font-size: 1.18rem; letter-spacing: .01em;
}
.brand-text span { font-size: .78rem; font-weight: 600; letter-spacing: .22em; text-transform: uppercase; color: var(--gold); }
.header-logo-img { height: 46px; width: auto; }

.banner-nav {
  list-style: none; display: flex; flex-wrap: wrap; align-items: center;
  gap: .15rem; margin: 0; padding: 0;
}
.banner-nav a {
  display: block; padding: .5rem .7rem; border-radius: 6px;
  color: #e9edf2; text-decoration: none; font-size: .93rem; font-weight: 600;
  letter-spacing: .01em; transition: background .15s, color .15s;
}
.banner-nav a:hover { background: rgba(255,255,255,.09); color: #fff; }
.banner-nav a[aria-current="page"] { color: #fff; background: rgba(184,134,43,.22); box-shadow: inset 0 -2px 0 var(--gold); }
.banner-nav .nav-register {
  background: var(--rust); color: #fff; margin-left: .35rem; padding-inline: 1rem;
}
.banner-nav .nav-register:hover { background: var(--rust-deep); color: #fff; }

.nav-toggle {
  display: none; margin-left: auto;
  background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4);
  padding: .5rem .9rem; border-radius: 6px; font-size: .95rem; font-weight: 600; cursor: pointer;
}
.nav-toggle:hover { background: rgba(255,255,255,.1); }

/* ============================ HERO ============================ */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 60%, #24435e 100%);
  color: #fff; padding: 0;
}
.hero-art { position: absolute; inset: 0; z-index: 0; }
.hero-art svg { width: 100%; height: 100%; }
.flight-path { animation: dash 40s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -360; } }
.hero-plane-img {
  position: absolute; left: 80.6%; top: 25%; width: clamp(58px, 9vw, 120px);
  transform: translate(-50%, -50%) rotate(-8deg); z-index: 2;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,.35));
}
.hero-inner {
  position: relative; z-index: 3;
  max-width: var(--wrap); margin-inline: auto; padding: clamp(3rem, 8vw, 6rem) 20px clamp(3rem, 7vw, 5rem);
  max-width: min(var(--wrap), 100%);
}
.hero-inner > * { max-width: 640px; }
.hero-eyebrow {
  display: inline-block; font-size: .76rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--gold);
  background: rgba(184,134,43,.14); border: 1px solid rgba(184,134,43,.4);
  padding: .4rem .8rem; border-radius: 100px; margin-bottom: 1.2rem;
}
.hero h1 { color: #fff; font-size: clamp(2.3rem, 6vw, 3.8rem); }
.hero .lede { color: #dde5ec; font-size: clamp(1.02rem, 1.7vw, 1.2rem); margin-top: .5rem; }
.lede { font-size: 1.15rem; color: var(--ink-soft); }

.hero-meta { display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem; margin: 1.8rem 0 2rem; }
.hero-meta div { display: flex; flex-direction: column; }
.hero-meta strong { font-family: var(--font-head); font-size: 1.35rem; color: #fff; }
.hero-meta span { font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--gold); }

.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; }

/* ============================ BUTTONS ============================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .72rem 1.35rem; border-radius: 8px; font-weight: 700; font-size: .96rem;
  text-decoration: none; cursor: pointer; border: 2px solid transparent;
  transition: transform .06s ease, background .15s, border-color .15s, color .15s;
  line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--rust); color: #fff; border-color: var(--rust); }
.btn-primary:hover { background: var(--rust-deep); border-color: var(--rust-deep); color: #fff; }
.btn-outline { background: transparent; color: var(--rust); border-color: var(--rust); }
.btn-outline:hover { background: var(--rust); color: #fff; }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.16); color: #fff; border-color: #fff; }

/* ============================ PANELS / CARDS ============================ */
.panel {
  background: var(--panel-bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.6rem; box-shadow: var(--shadow);
}
.panel h3 { margin-top: 0; }

.stat { display: flex; flex-direction: column; padding: .3rem 0; }
.stat strong { font-family: var(--font-head); font-size: 1.5rem; color: var(--gold-deep); line-height: 1.1; }
.stat span { font-size: .82rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .05em; }

/* ============================ PAGE HERO (interior pages) ============================ */
.page-hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff; padding-block: clamp(2.2rem, 6vw, 3.6rem);
  border-bottom: 3px solid var(--gold);
}
.page-hero h1 { color: #fff; }
.page-hero p { color: #cfd9e2; font-size: 1.1rem; margin: 0; max-width: 60ch; }

/* ============================ FORMS ============================ */
.reg-form { display: flex; flex-direction: column; gap: .35rem; }
.reg-form label { font-weight: 700; font-size: .9rem; color: var(--ink); margin-top: .6rem; }
.reg-form input {
  font: inherit; padding: .7rem .85rem; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink); margin-bottom: .4rem;
}
.reg-form input:focus { outline: 2px solid var(--gold); outline-offset: 1px; border-color: var(--gold); }
.reg-form .btn { margin-top: .8rem; }

/* ============================ NOTES ============================ */
.placeholder-note {
  background: #fdf3cf; border: 1px solid #e6c65a; border-left: 4px solid var(--gold);
  color: #6a531a; padding: .85rem 1.1rem; border-radius: 8px; font-size: .92rem;
  margin-bottom: 1.5rem;
}

/* ============================ TABLES ============================ */
table {
  width: 100%; border-collapse: collapse; margin: 0 0 1.5rem;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  font-size: .95rem;
}
th, td { text-align: left; padding: .7rem .9rem; border-bottom: 1px solid var(--line-soft); }
th { background: var(--paper-alt); font-family: var(--font-body); font-weight: 700; color: var(--ink); letter-spacing: .02em; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) td, tr:nth-child(even) td { background: #fcfaf3; }

/* ============================ SPONSORS ============================ */
.sponsor-tier { margin-bottom: 2.5rem; }
.sponsor-tier h3 { color: var(--gold-deep); border-bottom: 2px solid var(--line); padding-bottom: .4rem; }
.sponsor-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1rem; margin-top: 1rem; }
.sponsor-box {
  display: flex; align-items: center; justify-content: center; aspect-ratio: 3 / 2;
  background: #fff; border: 1px dashed var(--gold); border-radius: 8px;
  color: var(--gold-deep); font-weight: 700; letter-spacing: .05em; font-size: .9rem;
}

/* ============================ FOOTER ============================ */
.site-footer { background: var(--navy); color: #cdd6df; padding-block: 2.8rem 1.5rem; border-top: 3px solid var(--gold); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 2rem; }
.site-footer h4 { color: #fff; text-transform: uppercase; letter-spacing: .06em; font-family: var(--font-body); font-size: .85rem; margin-bottom: .8rem; }
.site-footer p { color: #aeb9c4; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: .4rem; }
.site-footer a { color: #cdd6df; text-decoration: none; }
.site-footer a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 2rem; padding-top: 1.2rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
  font-size: .85rem; color: #98a4b0;
}
.footer-bottom a { color: var(--gold); text-decoration: none; }

/* ============================ RESPONSIVE ============================ */
@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  nav[aria-label="Primary"] { flex-basis: 100%; }
  .banner-nav {
    flex-direction: column; align-items: stretch; gap: .2rem;
    max-height: 0; overflow: hidden; opacity: 0;
    transition: max-height .28s ease, opacity .2s ease;
    padding-top: 0;
  }
  .banner-nav.open { max-height: 640px; opacity: 1; padding-top: .6rem; padding-bottom: .4rem; }
  .banner-nav a { padding: .7rem .8rem; }
  .banner-nav .nav-register { margin-left: 0; text-align: center; margin-top: .3rem; }
  .header-logo-img { height: 40px; }
}
@media (max-width: 620px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .hero-meta { gap: 1rem 1.8rem; }
  body { font-size: 16px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .flight-path { animation: none; }
  html { scroll-behavior: auto; }
}