/* ===== Swim to Serve: red, white & blue ===== */
:root {
  --navy: #0b2551;
  --navy-deep: #071a3a;
  --blue: #1d4ea8;
  --red: #c8102e;
  --red-dark: #a00d25;
  --white: #ffffff;
  --cream: #f6f4ef;
  --ink: #14213d;
  --muted: #55607a;
  --line: #dfe3ec;
  --radius: 10px;
  --block: "Anton", Impact, "Arial Narrow Bold", sans-serif;
  --body: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { font-family: var(--body); color: var(--ink); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.red { color: var(--red); }

/* ===== Buttons ===== */
.btn {
  display: inline-block; font-family: var(--block); font-size: 1.05rem; letter-spacing: .06em;
  text-decoration: none; text-transform: uppercase; padding: .85rem 1.6rem; border-radius: 6px;
  border: 2px solid transparent; cursor: pointer; transition: transform .15s, background .15s, color .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn--small { padding: .5rem 1rem; font-size: .95rem; }
.btn--red { background: var(--red); color: var(--white); }
.btn--red:hover { background: var(--red-dark); }
.btn--white { background: var(--white); color: var(--navy); }
.btn--outline-white { border-color: var(--white); color: var(--white); }
.btn--outline-white:hover { background: var(--white); color: var(--navy); }
.btn--navy { background: var(--navy); color: var(--white); }
.btn--navy:hover { background: var(--blue); }
.btn--ghost { border-color: var(--line); color: var(--navy); background: var(--white); font-family: var(--body); font-weight: 600; text-transform: none; letter-spacing: 0; font-size: .95rem; }
.btn--ghost:hover { border-color: var(--navy); }
.btn[aria-disabled="true"] { background: #e8ebf1; color: var(--muted); cursor: default; transform: none; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.actions--center { justify-content: center; }

/* ===== Logo (block letters) ===== */
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.logo__badge {
  width: 40px; height: 40px; background: var(--navy); border-radius: 6px; display: grid; place-items: center;
  box-shadow: inset 0 -5px 0 var(--red);
}
.logo__badge svg { width: 22px; height: 22px; fill: var(--white); margin-top: -3px; }
.logo__text { font-family: var(--block); font-size: 1.6rem; letter-spacing: .04em; color: var(--navy); line-height: 1; }
.logo--footer .logo__text { color: var(--white); font-size: 1.4rem; }

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.97); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: space-between; padding: 12px 20px;
  border-bottom: 4px solid var(--red);
}
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a:not(.btn) { text-decoration: none; font-weight: 600; color: var(--navy); font-size: .95rem; }
.nav__links a:not(.btn):hover { color: var(--red); }
.nav__toggle { display: none; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; padding: 8px; }
.nav__toggle span { display: block; height: 3px; background: var(--navy); margin: 5px 0; border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; background: var(--navy); color: var(--white); overflow: hidden; padding: 96px 0 0; }
.hero__stars {
  position: absolute; inset: 0; opacity: .09;
  background-image: radial-gradient(circle, #fff 1.6px, transparent 2px);
  background-size: 34px 34px;
}
.hero__content { position: relative; padding-bottom: 88px; }
.hero__title { font-family: var(--block); font-weight: 400; font-size: clamp(2.8rem, 8vw, 5.6rem); line-height: 1; letter-spacing: .01em; margin: 14px 0 24px; }
.hero__title span { display: block; }
.hero__sub { max-width: 560px; font-size: 1.12rem; color: #d6deee; margin-bottom: 32px; }
.hero__stripes { position: relative; height: 36px; background: repeating-linear-gradient(180deg, var(--red) 0 12px, var(--white) 12px 24px); }

/* ===== Section basics ===== */
section { padding: 88px 0; }
.hero, .band { padding-bottom: 0; }
.eyebrow { font-weight: 700; text-transform: uppercase; letter-spacing: .16em; font-size: .8rem; color: var(--blue); }
.eyebrow--red { color: var(--red); }
.eyebrow--light { color: #9fb6e3; }
.eyebrow--center { text-align: center; }
.title { font-family: var(--block); font-weight: 400; color: var(--navy); font-size: clamp(2.1rem, 5vw, 3.2rem); line-height: 1.05; margin: 8px 0 16px; letter-spacing: .01em; }
.title--center { text-align: center; }
.intro { color: var(--muted); font-size: 1.08rem; margin-bottom: 36px; }

/* ===== Event tabs ===== */
.tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.tab {
  text-align: left; background: var(--white); border: 2px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; cursor: pointer; font: inherit; color: var(--navy); transition: border-color .15s, background .15s, transform .15s;
  position: relative; overflow: hidden;
}
.tab:hover { border-color: var(--navy); transform: translateY(-2px); }
.tab__num { font-family: var(--block); font-size: .9rem; letter-spacing: .1em; color: var(--red); }
.tab__name { display: block; font-family: var(--block); font-size: 1.35rem; line-height: 1.1; margin: 4px 0 6px; letter-spacing: .02em; }
.tab__date { font-size: .85rem; color: var(--muted); font-weight: 500; }
.tab[aria-selected="true"] { background: var(--navy); border-color: var(--navy); color: var(--white); }
.tab[aria-selected="true"] .tab__date { color: #c4d0ea; }
.tab[aria-selected="true"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 5px; background: var(--red); }
.tab:focus-visible { outline: 3px solid var(--red); outline-offset: 2px; }

.panel { border: 2px solid var(--line); border-radius: var(--radius); padding: 36px; background: var(--cream); animation: fade .25s ease; }
.panel[hidden] { display: none; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.panel__grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 36px; align-items: start; }
.panel h3 { font-family: var(--block); font-weight: 400; font-size: 2rem; color: var(--navy); letter-spacing: .02em; line-height: 1.1; margin-bottom: 12px; }
.panel p { color: #33405e; margin-bottom: 14px; }
.panel ul { margin: 0 0 8px 20px; color: #33405e; }
.panel li { margin-bottom: 6px; }

.details { background: var(--white); border-radius: var(--radius); padding: 22px; border-top: 6px solid var(--red); box-shadow: 0 6px 20px rgba(11,37,81,.08); }
.details dl { display: grid; gap: 14px; margin-bottom: 20px; }
.details dt { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.details dd { font-weight: 600; color: var(--navy); }
.details .actions { flex-direction: column; }
.details .btn { text-align: center; width: 100%; }
.copied { font-size: .85rem; color: var(--blue); font-weight: 600; min-height: 1.2em; text-align: center; }

/* ===== Band ===== */
.band { background: var(--red); color: var(--white); padding: 40px 0; }
.band__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; }
.band strong { display: block; font-family: var(--block); font-weight: 400; font-size: 2.6rem; line-height: 1; letter-spacing: .03em; }
.band span { font-weight: 600; text-transform: uppercase; letter-spacing: .1em; font-size: .8rem; color: #ffe1e6; }

/* ===== About ===== */
.about__grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: center; }
.about p { color: #33405e; margin-bottom: 16px; font-size: 1.05rem; }
.how { background: var(--navy); color: var(--white); border-radius: var(--radius); padding: 32px; border-bottom: 8px solid var(--red); }
.how h3 { font-family: var(--block); font-weight: 400; font-size: 1.7rem; letter-spacing: .03em; margin-bottom: 20px; }
.how ol { list-style: none; display: grid; gap: 18px; }
.how li { display: flex; gap: 14px; align-items: flex-start; color: #d6deee; }
.how li > span { flex: 0 0 36px; height: 36px; border-radius: 50%; background: var(--red); color: var(--white); display: grid; place-items: center; font-family: var(--block); font-size: 1.1rem; }
.how strong { display: block; color: var(--white); font-size: 1.05rem; }

/* ===== Why ===== */
.why { background: var(--cream); }
.why__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.why__item { background: var(--white); border-radius: var(--radius); padding: 30px; border-left: 6px solid var(--blue); }
.why__item:nth-child(2) { border-left-color: var(--red); }
.why__item:nth-child(3) { border-left-color: var(--navy); }
.why__num { font-family: var(--block); font-size: 2.4rem; color: var(--line); line-height: 1; }
.why__item h3 { font-size: 1.15rem; color: var(--navy); margin: 8px 0; }
.why__item p { color: var(--muted); }

/* ===== CTA ===== */
.cta { background: var(--navy); color: var(--white); text-align: center; position: relative; }
.cta::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 8px; background: repeating-linear-gradient(90deg, var(--red) 0 40px, var(--white) 40px 80px); }
.cta__title { font-family: var(--block); font-weight: 400; font-size: clamp(2rem, 5vw, 3rem); line-height: 1.05; letter-spacing: .02em; margin-bottom: 12px; }
.cta p { color: #c4d0ea; font-size: 1.08rem; margin-bottom: 28px; }

/* ===== Footer ===== */
.footer { background: var(--navy-deep); color: #9fb0d1; padding: 28px 0; font-size: .9rem; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer a { color: var(--white); text-decoration: none; font-weight: 600; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .tabs { grid-template-columns: repeat(2, 1fr); }
  .panel__grid, .about__grid { grid-template-columns: 1fr; gap: 28px; }
  .why__grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; top: 100%; left: 0; right: 0; background: var(--white); flex-direction: column;
    align-items: stretch; gap: 0; padding: 8px 20px 20px; border-bottom: 4px solid var(--red);
    display: none;
  }
  .nav__links.open { display: flex; }
  .nav__links a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav__links .btn { margin-top: 14px; text-align: center; }
  section { padding: 64px 0; }
  .hero { padding-top: 64px; }
  .hero__content { padding-bottom: 64px; }
  .panel { padding: 22px; }
  .band__grid { grid-template-columns: 1fr; gap: 22px; }
  .logo__text { font-size: 1.35rem; }
}
@media (max-width: 420px) {
  .tabs { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}