/* Tantrum Kitesurf, static rebuild (2026-10-25).
   Keeps the old brand cyan and the TANTRUM wordmark; everything else is new:
   ocean-navy and sand, Archivo (narrow, heavy) for headings, Inter for reading. */

:root {
  --ink: #0a1a24;
  --sea: #0f3346;
  --tide: #17506b;
  --cyan: #00cef7;
  --cyan-deep: #0091b3;
  --sand: #f3ece0;
  --paper: #fbf8f3;
  --text: #17262f;
  --muted: #5a6a73;
  --line: #e2d9ca;
  --radius: 14px;
  --display: 'Archivo', 'Arial Narrow', sans-serif;
  --body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --wrap: 1180px;
  --narrow: 720px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 1.0625rem/1.7 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--cyan-deep); text-underline-offset: 3px; }
a:hover { color: var(--tide); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 99; background: #fff; padding: 8px 12px; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-stretch: 80%;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 1.6em 0 0.5em;
}
h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); margin-top: 0; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.1rem; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: var(--narrow); margin: 0 auto; padding: 0 20px; }

/* ---------- header */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 26, 36, 0.94);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.top__in {
  max-width: var(--wrap); margin: 0 auto; padding: 0 20px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.mark {
  font-family: var(--display); font-weight: 900; font-stretch: 112%;
  font-size: 1.45rem; letter-spacing: 0.02em; color: var(--cyan); text-decoration: none;
}
.mark:hover { color: #fff; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: #d8e4ea; text-decoration: none; font-weight: 500; font-size: 0.95rem;
  padding: 8px 12px; border-radius: 999px;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav .nav__cta { background: var(--cyan); color: var(--ink); font-weight: 600; margin-left: 8px; }
.nav .nav__cta:hover { background: #fff; color: var(--ink); }
.burger { display: none; }

@media (max-width: 900px) {
  .burger {
    display: grid; gap: 6px; background: none; border: 0; padding: 10px; cursor: pointer;
  }
  .burger span { display: block; width: 24px; height: 2px; background: #fff; transition: transform .2s; }
  .burger[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .burger[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav {
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ink); padding: 8px 12px 20px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 14px 12px; border-radius: 8px; font-size: 1.05rem; }
  .nav .nav__cta { margin: 10px 0 0; text-align: center; }
}

/* ---------- buttons, chips */
.btn {
  display: inline-block; background: var(--cyan); color: var(--ink);
  font-family: var(--display); font-stretch: 90%; font-weight: 800; font-size: 1.05rem;
  letter-spacing: 0.01em; text-decoration: none;
  padding: 14px 26px; border-radius: 999px; border: 0; cursor: pointer;
  transition: transform .15s, background .15s;
}
.btn:hover { background: #fff; color: var(--ink); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: #fff; box-shadow: inset 0 0 0 2px rgba(255,255,255,.7); }
.btn--ghost:hover { background: #fff; color: var(--ink); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--tide); color: #fff; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chip {
  font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--tide); background: #e3f3f7; padding: 5px 10px; border-radius: 999px; text-decoration: none;
}
.chip:hover { background: var(--cyan); color: var(--ink); }
.kicker {
  font-family: var(--display); font-stretch: 90%; font-weight: 700; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--cyan-deep); margin: 0 0 12px;
}

/* ---------- home */
.hero {
  position: relative; min-height: min(86vh, 760px); display: flex; align-items: flex-end;
  color: #fff; background: var(--ink) url('/assets/img/hero.jpg') center 40% / cover no-repeat;
  isolation: isolate;
}
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(10,26,36,.15) 0%, rgba(10,26,36,.35) 45%, rgba(10,26,36,.92) 100%);
}
.hero__in { max-width: var(--wrap); margin: 0 auto; padding: 0 20px 72px; width: 100%; }
.hero h1 {
  color: #fff; font-size: clamp(2.8rem, 8vw, 6rem); font-stretch: 72%; font-weight: 900;
  text-transform: uppercase; line-height: 0.92; max-width: 11ch; margin-bottom: 20px;
}
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero p { font-size: 1.2rem; max-width: 34rem; color: #e6eef2; margin: 0 0 28px; }
.hero .kicker { color: var(--cyan); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.band { padding: 96px 0; }
.band--sand { background: var(--sand); }
.band--ink { background: var(--ink); color: #d8e4ea; }
.band--ink h2, .band--ink h3 { color: #fff; }
.band__head { max-width: 40rem; margin-bottom: 40px; }
.band__head h2 { margin-top: 0; }
.band__head p { color: var(--muted); font-size: 1.1rem; }
.band--ink .band__head p { color: #a9bcc6; }

.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.split__img { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 5; }
.split__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } .split__img { aspect-ratio: 16 / 10; } }

.modules { list-style: none; padding: 0; margin: 0 0 32px; counter-reset: mod; }
.modules li { border-top: 1px solid var(--line); }
.modules li:last-child { border-bottom: 1px solid var(--line); }
.modules a {
  display: grid; grid-template-columns: 3.2rem 1fr auto; align-items: center; gap: 12px;
  padding: 18px 4px; text-decoration: none; color: var(--ink);
}
.modules a::before {
  counter-increment: mod; content: counter(mod, decimal-leading-zero);
  font-family: var(--display); font-weight: 900; font-stretch: 75%; font-size: 1.6rem; color: var(--cyan-deep);
}
.modules strong { font-family: var(--display); font-stretch: 85%; font-size: 1.25rem; font-weight: 800; display: block; }
.modules span { color: var(--muted); font-size: 0.95rem; }
.modules em { font-style: normal; font-size: 0.85rem; color: var(--muted); white-space: nowrap; }
.modules a:hover strong { color: var(--cyan-deep); }

.knee-band {
  display: grid; grid-template-columns: 1fr 1fr; border-radius: 22px; overflow: hidden;
  background: var(--sea); color: #d8e4ea;
}
.knee-band__img { background: url('/assets/img/sunset.jpg') center / cover; min-height: 360px; }
.knee-band__body { padding: 56px; }
.knee-band h2 { color: #fff; margin-top: 0; }
.knee-band .kicker { color: var(--cyan); }
.knee-band ul { padding-left: 1.1em; margin: 0 0 28px; }
@media (max-width: 860px) { .knee-band { grid-template-columns: 1fr; } .knee-band__img { min-height: 220px; } .knee-band__body { padding: 32px 24px; } }

.tarifa {
  position: relative; color: #fff; padding: 120px 0;
  background: var(--sea) url('/assets/img/tarifa.jpg') center / cover; isolation: isolate;
}
.tarifa::before { content: ''; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(10,26,36,.88), rgba(10,26,36,.2)); }
.tarifa h2 { color: #fff; margin-top: 0; }
.tarifa p { max-width: 32rem; color: #e6eef2; }
.links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.links a { color: #fff; text-decoration: none; padding: 8px 14px; border-radius: 999px; background: rgba(255,255,255,.12); font-size: .95rem; }
.links a:hover { background: var(--cyan); color: var(--ink); }

/* ---------- cards */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 960px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column; text-decoration: none; color: var(--text);
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 1px 0 rgba(10,26,36,.06), 0 10px 30px -18px rgba(10,26,36,.35);
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 1px 0 rgba(10,26,36,.06), 0 18px 40px -18px rgba(10,26,36,.45); color: var(--text); }
.card__img { aspect-ratio: 16 / 10; background: var(--sea); overflow: hidden; }
.card__img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; }
.card:hover .card__img img { transform: scale(1.04); }
.card__blank { width: 100%; height: 100%; background: linear-gradient(135deg, var(--sea), var(--tide)); }
.card__body { padding: 18px 20px 22px; }
.card__meta { font-size: .78rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.card__title { font-size: 1.25rem; margin: 6px 0 8px; font-stretch: 85%; }
.card__text { margin: 0; color: var(--muted); font-size: .95rem; line-height: 1.55; }
.grid--pages { margin: 48px 0 0; }

/* ---------- posts and pages */
.post__head, .page__head, .archive__head { padding-top: 64px; }
.post__date { color: var(--muted); font-size: .95rem; margin: 0 0 32px; }
.post__note { color: var(--muted); font-size: .9rem; font-style: italic; margin: -20px 0 32px; }
.post__img { margin: 0 0 40px; border-radius: var(--radius); overflow: hidden; }
.post__img img { display: block; width: 100%; }
.page__head h1 { margin-bottom: 32px; }
.archive__head { margin-bottom: 40px; max-width: 42rem; }
.archive__head p { color: var(--muted); font-size: 1.1rem; }
.archive { padding-bottom: 96px; }

.prose { font-size: 1.1rem; }
.prose > :first-child { margin-top: 0; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.25em; }
.prose li { margin-bottom: .4em; }
.prose img { border-radius: 10px; display: block; margin: 1.5em auto; }
.prose .alignleft { float: left; margin: .3em 1.5em 1em 0; max-width: 45%; }
.prose .alignright { float: right; margin: .3em 0 1em 1.5em; max-width: 45%; }
.prose h2, .prose h3 { clear: both; }
.prose blockquote {
  margin: 1.8em 0; padding: 4px 0 4px 22px; border-left: 4px solid var(--cyan);
  font-family: var(--display); font-stretch: 90%; font-size: 1.35rem; line-height: 1.35; color: var(--ink);
}
.prose table { width: 100%; border-collapse: collapse; font-size: .95rem; margin: 1.5em 0; }
.prose td, .prose th { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.prose hr { border: 0; height: 1px; background: var(--line); margin: 2.5em 0; }
.prose::after { content: ''; display: block; clear: both; }
.video { position: relative; aspect-ratio: 16 / 9; margin: 1.8em 0; border-radius: 12px; overflow: hidden; background: var(--ink); clear: both; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
iframe.audio { width: 100%; height: 166px; border: 0; margin: 1.2em 0; }
@media (max-width: 600px) { .prose .alignleft, .prose .alignright { float: none; max-width: 100%; margin: 1.5em auto; } }

.cta {
  margin: 56px 0 72px; padding: 32px; border-radius: var(--radius);
  background: var(--sea); color: #d8e4ea;
}
.cta--sea { background: var(--ink); }
.cta__kicker { font-family: var(--display); font-weight: 700; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); margin: 0 0 8px; }
.cta__title { font-family: var(--display); font-stretch: 85%; font-weight: 800; font-size: 1.6rem; color: #fff; line-height: 1.15; margin: 0 0 10px; }
.cta p { margin: 0 0 20px; }

.related { padding: 0 0 96px; }
.related h2 { margin-top: 0; }

.pager { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 48px; }
.pager a { min-width: 42px; text-align: center; padding: 8px 12px; border-radius: 10px; background: #fff; color: var(--ink); text-decoration: none; font-weight: 600; box-shadow: inset 0 0 0 1px var(--line); }
.pager a.is-on, .pager a:hover { background: var(--ink); color: #fff; box-shadow: none; }

/* ---------- knee guide */
.lead { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; padding: 64px 0 96px; }
@media (max-width: 860px) { .lead { grid-template-columns: 1fr; gap: 32px; padding-top: 40px; } }
.lead h1 { font-stretch: 75%; font-weight: 900; text-transform: uppercase; line-height: .95; }
.lead__intro { font-size: 1.2rem; color: var(--muted); }
.lead ul { padding-left: 1.1em; }
.form {
  background: #fff; border-radius: 18px; padding: 32px;
  box-shadow: 0 1px 0 rgba(10,26,36,.06), 0 24px 60px -30px rgba(10,26,36,.5);
  position: sticky; top: 96px;
}
.form__title { font-family: var(--display); font-stretch: 85%; font-weight: 800; font-size: 1.5rem; color: var(--ink); margin: 0 0 6px; line-height: 1.15; }
.form__meta { color: var(--muted); margin: 0 0 22px; font-size: .95rem; }
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.field input {
  width: 100%; font: inherit; padding: 13px 14px; border-radius: 10px;
  border: 1px solid #cdd8dd; background: var(--paper);
}
.field input:focus { outline: 2px solid var(--cyan); outline-offset: 1px; border-color: transparent; }
.tick { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; line-height: 1.45; margin: 4px 0 14px; cursor: pointer; }
.tick input { width: 18px; height: 18px; margin: 2px 0 0; flex: none; accent-color: var(--cyan-deep); }
.consent { font-size: .85rem; color: var(--muted); line-height: 1.5; margin: 0 0 18px; }
.form .btn { width: 100%; }
.trap { position: absolute; left: -9999px; height: 0; overflow: hidden; }

/* ---------- footer */
.foot { background: var(--ink); color: #a9bcc6; padding: 72px 0 24px; font-size: .95rem; }
.foot__in { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 1.2fr 2fr; gap: 56px; }
.foot a { color: #d8e4ea; text-decoration: none; }
.foot a:hover { color: var(--cyan); }
.mark--foot { display: inline-block; margin-bottom: 12px; }
.foot__about p { max-width: 26rem; }
.foot__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.foot__cols a { display: block; padding: 4px 0; }
.foot__h { font-family: var(--display); font-weight: 700; text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; color: #fff; margin: 0 0 10px; }
.foot__base { max-width: var(--wrap); margin: 48px auto 0; padding: 20px 20px 0; border-top: 1px solid rgba(255,255,255,.08); font-size: .85rem; }
@media (max-width: 860px) { .foot__in { grid-template-columns: 1fr; gap: 32px; } }
@media (max-width: 520px) { .foot__cols { grid-template-columns: 1fr 1fr; } }

/* ---------- school */
.hero .kicker { text-shadow: 0 1px 12px rgba(10,26,36,.7); }
.school-hero {
  position: relative; color: #fff; padding: 110px 0 90px; isolation: isolate;
  background: var(--sea) url('/assets/img/lesson.jpg') center 30% / cover;
}
.school-hero::before { content: ''; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(10,26,36,.92) 0%, rgba(10,26,36,.6) 60%, rgba(10,26,36,.25)); }
.school-hero h1 { color: #fff; max-width: 14ch; font-stretch: 75%; font-weight: 900; text-transform: uppercase; line-height: .95; }
.school-hero p { max-width: 36rem; font-size: 1.15rem; color: #e6eef2; margin: 0 0 28px; }
.school-hero .kicker { color: var(--cyan); }
.module { padding: 64px 20px 96px; }
.module .kicker a { color: inherit; text-decoration: none; }
.lessons { list-style: none; padding: 0; margin: 32px 0 40px; }
.lessons li + li { margin-top: 12px; }
.lessons a {
  display: grid; grid-template-columns: 2.6rem 96px 1fr auto; gap: 16px; align-items: center;
  background: #fff; border-radius: 12px; padding: 12px 18px 12px 14px; text-decoration: none; color: var(--text);
  box-shadow: 0 1px 0 rgba(10,26,36,.06), 0 8px 24px -18px rgba(10,26,36,.4); transition: transform .15s;
}
.lessons a:hover { transform: translateX(3px); color: var(--text); }
.lesson__n { font-family: var(--display); font-weight: 900; font-stretch: 75%; font-size: 1.5rem; color: var(--cyan-deep); text-align: center; }
.lesson__img { width: 96px; aspect-ratio: 4 / 3; border-radius: 8px; overflow: hidden; background: linear-gradient(135deg, var(--sea), var(--tide)); }
.lesson__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lesson__body strong { display: block; font-family: var(--display); font-stretch: 85%; font-weight: 800; font-size: 1.15rem; color: var(--ink); line-height: 1.2; margin-bottom: 4px; }
.lesson__body span { display: block; font-size: .9rem; color: var(--muted); line-height: 1.45; }
.lessons em { font-style: normal; font-size: .8rem; color: var(--muted); white-space: nowrap; }
@media (max-width: 600px) {
  .lessons a { grid-template-columns: 2rem 64px 1fr; gap: 12px; }
  .lesson__img { width: 64px; }
  .lessons em { display: none; }
  .lesson__body span { display: none; }
}
.lesson-bar { font-size: .85rem; color: var(--muted); margin: 0 0 16px; }
.lesson-bar a { color: var(--cyan-deep); text-decoration: none; font-weight: 600; }
.next-lesson {
  display: block; margin: 48px 0 0; padding: 22px 26px; border-radius: var(--radius);
  background: var(--cyan); color: var(--ink); text-decoration: none; transition: transform .15s;
}
.next-lesson:hover { transform: translateY(-2px); color: var(--ink); }
.next-lesson span { display: block; font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; }
.next-lesson strong { font-family: var(--display); font-stretch: 85%; font-weight: 800; font-size: 1.4rem; }
.next-lesson strong::after { content: ' →'; }