/* Happy Feet: design tokens and shared components.
   This file belongs to Happy Feet only. The Piano Odyssey has its own. */

:root {
  --navy-900: #0F1640; --navy-700: #17205E; --navy-600: #1E2A78; --navy-500: #3A4DB3; --navy-200: #CDD4F3; --navy-100: #E9ECFA;
  --sun-700: #8A5A00; --sun-500: #FFC21A; --sun-300: #FFDF7A; --sun-100: #FFF4CC;
  --rose-700: #B81E45; --rose-600: #E8365F; --rose-100: #FDE6EB;
  --blush-300: #FFC9D6; --blush-100: #FFE6EC;
  --cream-50: #FFFDF9; --cream-100: #FBF7F2; --cream-200: #F2ECE3; --cream-300: #E4DCCF;
  --ink-900: #161A33; --ink-700: #363A55; --ink-500: #63677E;
  --focus: #FFC21A;
  --error: #C42B3A;

  --display: "DM Serif Display", Georgia, serif;
  --body: "DM Sans", system-ui, sans-serif;

  --gutter: clamp(20px, 4vw, 56px);
  --width: 1200px;
  --section: 88px;
  --ease: cubic-bezier(.45, .05, .25, 1);
  --ring: 0 0 0 2px #fff, 0 0 0 5px var(--focus);

  /* Spacing on a 4px base. */
  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 32px; --s5: 48px; --s6: 64px; --s7: 96px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 100px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--cream-100);
  color: var(--ink-900);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; height: auto; display: block; }
[hidden] { display: none !important; }

h1, h2 {
  font-family: var(--display);
  font-weight: 400;
  font-style: normal;
  color: var(--navy-600);
  margin: 0 0 var(--s3);
}
h1 { font-size: clamp(38px, 5vw, 48px); line-height: 1.05; }
h2 { font-size: clamp(28px, 3.4vw, 34px); line-height: 1.2; }
h3 {
  font: 600 24px/1.25 var(--body);
  color: var(--navy-600);
  margin: 0 0 var(--s1);
}
/* The second half of a key headline, in rose. Upright, never italic. */
h1 em { font-style: normal; color: var(--rose-600); }

p { margin: 0 0 var(--s3); max-width: 64ch; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 600; }

a {
  color: var(--navy-600);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color 160ms var(--ease);
}
a:hover { color: var(--rose-700); }

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 6px; }

.skip-link {
  position: absolute;
  left: var(--s2);
  top: -100px;
  z-index: 100;
  background: var(--navy-600);
  color: #fff;
  font-weight: 600;
  padding: var(--s1) var(--s2);
  border-radius: 999px;
  text-decoration: none;
}
.skip-link:focus { top: var(--s2); color: #fff; }

.wrap {
  width: 100%;
  max-width: calc(var(--width) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.eyebrow {
  font: 600 12px/1.5 var(--body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rose-700);
  margin: 0 0 var(--s2);
}
.lede { font-size: 20px; line-height: 1.55; color: var(--ink-700); }
.section-intro { color: var(--ink-700); }
.small { font-size: 14px; line-height: 1.5; }

.icon { width: 20px; height: 20px; flex: none; display: inline-block; }

/* ---------- Logo: the wave wordmark ---------- */

.logo {
  display: inline-flex;
  flex-direction: column;
  gap: 0.28em;
  padding: 0.12em 0;
  font: 400 34px/1 var(--display);
  color: var(--navy-600);
  text-decoration: none;
}
.logo:hover { color: var(--navy-600); }
.logo-word { display: inline-flex; align-items: baseline; white-space: nowrap; }
.logo-word span { display: inline-block; }
.logo-word .f { color: var(--rose-600); }
.logo-tag {
  font: 600 max(9px, 0.2em)/1.3 var(--body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-500);
}
.logo.reversed,
.logo.reversed:hover { color: #fff; }
.logo.reversed .f { color: var(--sun-500); }
.logo.reversed .logo-tag { color: var(--navy-200); }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 242, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cream-300);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  min-height: 84px;
}
.site-nav ul {
  display: flex;
  align-items: center;
  gap: var(--s4);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a:not(.btn) {
  font: 500 15px/1.4 var(--body);
  color: var(--ink-700);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.site-nav a:not(.btn):hover { color: var(--navy-600); }
.site-nav a[aria-current="page"] {
  color: var(--navy-600);
  font-weight: 600;
  border-bottom-color: var(--sun-500);
}
.nav-toggle {
  display: none;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1.5px solid var(--navy-600);
  background: transparent;
  color: var(--navy-600);
  font: 600 15px var(--body);
  cursor: pointer;
}
.nav-toggle:hover { background: var(--navy-100); }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 8px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--navy-600);
  background: var(--navy-600);
  color: #fff;
  font: 600 16px/1.2 var(--body);
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease), transform 140ms var(--ease);
}
.btn:hover { background: var(--navy-700); border-color: var(--navy-700); color: #fff; }
.btn:active { transform: scale(.97); }
.btn:focus-visible { border-radius: 999px; }
.btn.sm { min-height: 36px; padding: 4px 16px; font-size: 14px; }
.btn.lg { min-height: 56px; padding: 10px 30px; font-size: 17px; }
.btn.accent { background: var(--sun-500); border-color: var(--sun-500); color: var(--navy-600); }
.btn.accent:hover { background: var(--sun-300); border-color: var(--sun-300); color: var(--navy-600); }
.btn.secondary,
.btn.ghost { background: transparent; color: var(--navy-600); }
.btn.ghost { border-color: transparent; }
.btn.secondary:hover,
.btn.ghost:hover { background: var(--navy-100); color: var(--navy-600); border-color: var(--navy-600); }
.btn.ghost:hover { border-color: transparent; }
.btn:disabled { opacity: .6; cursor: default; }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s4); }

/* ---------- Sections ---------- */

.section { padding: var(--section) 0; }
.section + .section { border-top: 1px solid var(--cream-300); }
.section.inverse,
.section.inverse + .section { border-top: 0; }

.split > * + * { margin-top: var(--s4); }
.wrap.split.even {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s6);
  align-items: start;
}
.split.even > * + * { margin-top: 0; }

.prose p { color: var(--ink-700); }
.prose p:first-child { font-size: 20px; line-height: 1.55; color: var(--ink-900); }

/* Inverse band: navy, with sunflower highlights. */
.inverse { background: var(--navy-600); color: #fff; }
.inverse h2,
.inverse h3 { color: #fff; }
.inverse .eyebrow { color: var(--sun-500); }
.inverse .prose p,
.inverse .prose p:first-child { color: #fff; }
.inverse a:not(.btn) { color: #fff; }
.inverse a:not(.btn):hover { color: var(--sun-300); }
.inverse .btn.secondary { color: #fff; border-color: #fff; }
.inverse .btn.secondary:hover { background: rgba(255, 255, 255, .12); color: #fff; border-color: #fff; }
.inverse :focus-visible { box-shadow: 0 0 0 2px var(--navy-600), 0 0 0 5px var(--focus); }

.photo { margin: 0; }
.photo img { width: 100%; border-radius: 32px; }

/* ---------- Cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s3);
  margin-top: var(--s5);
}
.card {
  background: var(--cream-50);
  border: 1px solid var(--cream-300);
  border-radius: 24px;
  padding: var(--s4);
}
.card p { color: var(--ink-700); }

.badge,
.card .do {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--navy-100);
  color: var(--navy-600);
  font: 700 12px/1.3 var(--body);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--s2);
}

.note {
  background: var(--sun-100);
  border-radius: 24px;
  padding: var(--s3) var(--s4);
  color: var(--ink-900);
  max-width: 64ch;
}

.plain-list { margin: 0 0 var(--s3); padding-left: 1.2em; max-width: 64ch; }
.plain-list li { margin-bottom: var(--s1); color: var(--ink-700); }
.plain-list li::marker { color: var(--navy-500); }

.service-list { list-style: none; margin: var(--s5) 0 0; padding: 0; display: grid; gap: var(--s3); }
.service-list > li {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: var(--s4);
  background: var(--cream-50);
  border: 1px solid var(--cream-300);
  border-radius: 24px;
  padding: var(--s4);
}
.service-list h3 { margin: 0; }
.service-list p { color: var(--ink-700); }
.service-list .note { background: var(--sun-100); padding: var(--s2) var(--s3); border-radius: 16px; }

.contact-list { list-style: none; margin: 0; padding: 0; max-width: 64ch; }
.contact-list li { padding: var(--s2) 0; border-top: 1px solid var(--cream-300); }
.contact-list li:last-child { border-bottom: 1px solid var(--cream-300); }
.contact-list .label {
  display: block;
  font: 600 12px/1.5 var(--body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-700);
  margin-bottom: 2px;
}

/* ---------- Forms ---------- */

.form { display: grid; gap: var(--s3); }
.form .pair { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3); }
.field label {
  display: block;
  font: 500 12px/1.4 var(--body);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-700);
}
.field .hint { letter-spacing: 0.04em; text-transform: none; color: var(--ink-500); }
.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 48px;
  font: 400 17px/1.4 var(--body);
  color: var(--ink-900);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--navy-600);
  border-radius: 0;
  padding: 10px 0;
}
.field textarea { min-height: 112px; resize: vertical; }
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  box-shadow: 0 3px 0 0 var(--focus);
  border-bottom-color: var(--navy-600);
  border-radius: 0;
}
.field input:user-invalid,
.field select:user-invalid,
.field textarea:user-invalid { border-bottom-color: var(--error); }
.form-help { font-size: 14px; line-height: 1.5; color: var(--ink-700); }
.form-status {
  display: none;
  background: var(--sun-100);
  border-radius: 16px;
  padding: var(--s2) var(--s3);
  font-size: 15px;
}
.form-status.show { display: block; }

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

.site-footer {
  background: var(--navy-900);
  color: var(--navy-200);
  padding: var(--s6) 0 var(--s4);
  font-size: 15px;
}
.site-footer .logo { font-size: 40px; }
.site-footer p { margin-top: var(--s3); max-width: 30em; }
.site-footer a:not(.logo) { color: #fff; text-decoration-color: rgba(255, 255, 255, .35); }
.site-footer a:not(.logo):hover { color: var(--sun-300); }
.site-footer :focus-visible { box-shadow: 0 0 0 2px var(--navy-900), 0 0 0 5px var(--focus); }
.footer-grid {
  display: grid;
  grid-template-columns: 5fr 3fr 4fr;
  gap: var(--s5);
  padding-bottom: var(--s5);
}
.footer-grid h3 {
  font: 600 12px/1.5 var(--body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sun-500);
  margin-bottom: var(--s2);
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: var(--s1); }
.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s2);
  padding-top: var(--s3);
  border-top: 1px solid rgba(205, 212, 243, .25);
  font-size: 14px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1040px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--cream-100);
    border-bottom: 1px solid var(--cream-300);
    padding: var(--s2) var(--gutter) var(--s4);
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; align-items: flex-start; gap: var(--s2); }
  .site-nav a:not(.btn) { font-size: 17px; }
}

@media (max-width: 860px) {
  :root { --section: 56px; }
  .site-header .wrap { min-height: 72px; }
  .logo { font-size: 28px; }
  .site-footer .logo { font-size: 34px; }
  .wrap.split.even,
  .cards,
  .footer-grid,
  .service-list > li { grid-template-columns: 1fr; }
  .wrap.split.even { gap: var(--s5); }
  .service-list > li { gap: var(--s2); padding: var(--s3); }
  .card { padding: 28px; }
}

@media (max-width: 480px) {
  .form .pair { grid-template-columns: 1fr; }
  .btn-row .btn { width: 100%; }
  .lede,
  .prose p:first-child { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
  .btn:active { transform: none; }
}

/* After an enquiry is sent, only the confirmation remains. */
.form.sent > *:not(.form-status) { display: none; }
.form-status.error { background: var(--rose-100); color: var(--error); }