/* ============================================================
   Horizon Music Academy — shared design system
   Navy + gold, Playfair Display display face, Inter body.
   Loaded by every page BEFORE page-specific css.
   ============================================================ */

:root {
  /* palette */
  --navy-950: #0a1120;
  --navy-900: #0e1729;
  --navy-800: #14233d;
  --navy-700: #1d3154;
  --navy-600: #27406b;
  --ink: #1b2436;
  --slate: #5a6779;
  --mist: #8b97a8;
  --cream: #faf7f1;
  --paper: #ffffff;
  --line: rgba(27, 36, 54, .10);
  --line-strong: rgba(27, 36, 54, .18);

  /* gold ramp */
  --gold-500: #c9962f;
  --gold-400: #d9a83f;
  --gold-300: #e6bd63;
  --gold-200: #f0d596;
  --gold-050: #fbf3dd;

  /* semantic */
  --bg: var(--cream);
  --surface: var(--paper);
  --text: var(--ink);
  --text-soft: var(--slate);
  --brand: var(--navy-800);
  --accent: var(--gold-500);
  --accent-soft: var(--gold-050);

  /* type */
  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* rhythm */
  --wrap: 1180px;
  --wrap-narrow: 860px;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(14, 23, 41, .06), 0 2px 8px rgba(14, 23, 41, .05);
  --shadow-md: 0 4px 12px rgba(14, 23, 41, .08), 0 12px 32px rgba(14, 23, 41, .08);
  --shadow-lg: 0 10px 30px rgba(14, 23, 41, .12), 0 30px 70px rgba(14, 23, 41, .14);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--navy-900);
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.6rem); }
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

/* ---------- layout ---------- */
.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
.wrap-narrow { width: min(100% - 2.5rem, var(--wrap-narrow)); margin-inline: auto; }
.section { padding: clamp(4rem, 9vw, 7.5rem) 0; }
.section--tight { padding: clamp(3rem, 6vw, 5rem) 0; }
.section--navy { background: var(--navy-900); color: rgba(255, 255, 255, .82); }
.section--navy h2, .section--navy h3 { color: #fff; }

/* ---------- shared bits ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin: 0 0 1rem;
}
.eyebrow::before {
  content: "";
  width: 34px; height: 1px;
  background: currentColor;
  opacity: .7;
}
.lede { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--text-soft); max-width: 62ch; }
.center { text-align: center; }
.center .lede { margin-inline: auto; }
.center .eyebrow::before { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .85rem 1.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--gold {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  color: var(--navy-950);
  box-shadow: 0 6px 18px rgba(201, 150, 47, .35);
}
.btn--gold:hover { box-shadow: 0 10px 26px rgba(201, 150, 47, .45); }
.btn--navy { background: var(--navy-800); color: #fff; box-shadow: var(--shadow-sm); }
.btn--navy:hover { background: var(--navy-700); box-shadow: var(--shadow-md); }
.btn--ghost { border-color: var(--line-strong); color: var(--navy-800); background: transparent; }
.btn--ghost:hover { border-color: var(--navy-800); background: rgba(20, 35, 61, .04); }
.btn--light { border-color: rgba(255, 255, 255, .35); color: #fff; background: rgba(255, 255, 255, .06); }
.btn--light:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .6); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.9rem;
  box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(201, 150, 47, .45); }

.grid { display: grid; gap: 1.6rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(250, 247, 241, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 76px;
}
.brand { display: flex; align-items: center; gap: .75rem; }
.brand img { height: 46px; width: auto; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; color: var(--navy-900); }
.brand__tag { font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-500); font-weight: 600; }

.nav { display: flex; align-items: center; gap: 1.9rem; }
.nav__links { display: flex; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.nav__links a {
  position: relative;
  font-size: .93rem;
  font-weight: 500;
  color: var(--navy-800);
  padding: .35rem 0;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--gold-400);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { transform: scaleX(1); }
.nav__links a[aria-current="page"] { color: var(--navy-950); font-weight: 600; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: transparent;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--navy-800); transition: transform .3s var(--ease), opacity .3s var(--ease); }
.site-header.is-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header.is-open .nav-toggle span:nth-child(2) { opacity: 0; }
.site-header.is-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--cream);
    border-bottom: 1px solid var(--line);
    padding: 0 1.25rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s var(--ease), padding .4s var(--ease);
  }
  .site-header.is-open .nav { max-height: 420px; padding: 1rem 1.25rem 1.5rem; }
  .nav__links { flex-direction: column; gap: .25rem; }
  .nav__links a { display: block; padding: .7rem 0; font-size: 1.05rem; }
  .nav .btn { margin-top: .75rem; width: 100%; }
}

/* ---------- footer ---------- */
.site-footer { background: var(--navy-950); color: rgba(255, 255, 255, .68); padding: 4.5rem 0 2rem; font-size: .93rem; }
.site-footer h4 { color: #fff; font-family: var(--font-body); font-size: .8rem; letter-spacing: .2em; text-transform: uppercase; margin-bottom: 1.1rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.4fr 1.2fr; gap: 2.5rem; }
.site-footer a { color: rgba(255, 255, 255, .68); transition: color .25s var(--ease); }
.site-footer a:hover { color: var(--gold-300); }
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.footer-brand__name { font-family: var(--font-display); font-size: 1.5rem; color: #fff; margin-bottom: .35rem; }
.footer-brand__tag { font-style: italic; color: var(--gold-300); font-family: var(--font-display); margin-bottom: 1rem; }
.footer-loc { margin-bottom: 1rem; }
.footer-loc strong { display: block; color: #fff; font-weight: 600; }
.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .82rem;
  color: rgba(255, 255, 255, .45);
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001s !important; transition-duration: .001s !important; }
}

/* ---------- utilities ---------- */
.stack-sm > * + * { margin-top: .6rem; }
.stack > * + * { margin-top: 1.1rem; }
.stack-lg > * + * { margin-top: 2rem; }
.actions { display: flex; gap: .9rem; flex-wrap: wrap; }
.center .actions { justify-content: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }