/* =========================================================
   Shared base for all niche templates (copy into each template folder, load BEFORE style.css).
   Each template's style.css sets the variables below and adds its own look.
   ========================================================= */
:root {
  --bg: #ffffff; --surface: #ffffff; --ink: #111; --muted: #666; --line: #e5e5e5;
  --accent: #333; --accent-ink: #fff;
  --head: system-ui, sans-serif; --body: system-ui, sans-serif;
  --radius: 14px; --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 76px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--ink); font: 400 16.5px/1.6 var(--body); overflow-x: clip; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
[hidden] { display: none !important; } /* layout rules like display:grid must never un-hide a hidden tab panel */
.container { width: min(1200px, 100% - 32px); margin-inline: auto; }
h1, h2, h3 { line-height: 1.15; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap;
  padding: 13px 22px; border-radius: var(--btn-radius, 10px); font-weight: 600; font-size: 15px;
  background: var(--accent); color: var(--accent-ink);
  transition: transform .25s var(--ease), filter .25s, background-color .25s, color .25s;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn--lg { padding: 16px 28px; font-size: 16px; }
.btn--full { width: 100%; }

/* ---------- header + mobile menu ---------- */
.header { position: fixed; inset: 0 0 auto; z-index: 40; transition: background-color .3s, box-shadow .3s, color .3s; color: var(--header-ink-top, #fff); }
.header.is-solid { background: var(--header-bg); color: var(--header-ink); box-shadow: 0 1px 0 var(--line); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: var(--header-h); }
.menu { display: flex; gap: 28px; font-weight: 500; font-size: 15px; }
.menu a { opacity: .85; transition: opacity .2s, color .2s; }
.menu a:hover { opacity: 1; color: var(--accent-hover, var(--accent)); }
.header__cta { display: flex; align-items: center; gap: 14px; }
.burger { display: none; width: 44px; height: 44px; border-radius: 10px; position: relative; }
.burger span, .burger::before, .burger::after {
  content: ""; position: absolute; left: 11px; right: 11px; height: 2px; background: currentColor; border-radius: 2px; transition: transform .3s var(--ease), opacity .3s;
}
.burger::before { top: 15px; } .burger span { top: 21px; } .burger::after { top: 27px; }
.header.menu-open .burger::before { transform: translateY(6px) rotate(45deg); }
.header.menu-open .burger span { opacity: 0; }
.header.menu-open .burger::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- sections ---------- */
.section { padding: clamp(72px, 10vw, 120px) 0; }
.section__head { max-width: 680px; margin: 0 auto clamp(40px, 6vw, 60px); text-align: center; }
.section__head--left { margin-left: 0; text-align: left; }
.section__head h2 { font-family: var(--head); font-size: clamp(30px, 4.2vw, 52px); line-height: 1.08; margin-bottom: 14px; }
.section__head p { color: var(--muted); font-size: 17px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--eyebrow, var(--accent)); margin-bottom: 12px; }
.stars { font-style: normal; color: #f5b400; letter-spacing: 1px; }

/* ---------- before / after slider ---------- */
.compare { position: relative; aspect-ratio: 4 / 3; border-radius: var(--radius); overflow: hidden; user-select: none; --pos: 50%; }
.compare img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.compare__before { position: absolute; inset: 0; clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.compare__handle { position: absolute; top: 0; bottom: 0; left: var(--pos); width: 3px; background: #fff; transform: translateX(-50%); pointer-events: none; }
.compare__handle span { position: absolute; top: 50%; left: 50%; width: 46px; height: 46px; border-radius: 50%; background: #fff; transform: translate(-50%, -50%); box-shadow: 0 6px 20px rgba(0, 0, 0, .3); }
.compare__handle span::before { content: "‹ ›"; position: absolute; inset: 0; display: grid; place-items: center; color: #111; font-weight: 700; font-size: 19px; letter-spacing: 3px; }
.compare__range { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; margin: 0; }
.compare__tag { position: absolute; top: 14px; padding: 5px 11px; border-radius: 8px; font-size: 13px; font-weight: 700; color: #fff; pointer-events: none; }
.compare__tag--before { left: 14px; background: rgba(0, 0, 0, .65); }
.compare__tag--after { right: 14px; background: var(--accent); color: var(--accent-ink); }

/* ---------- form basics ---------- */
.form { display: grid; gap: 14px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
.form input, .form select, .form textarea {
  width: 100%; padding: 13px 14px; border-radius: var(--field-radius, 10px); font: 400 16px var(--body); resize: vertical;
  border: 1px solid var(--field-line, var(--line)); background: var(--field-bg, #fff); color: var(--field-ink, var(--ink));
  transition: border-color .2s, box-shadow .2s;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus, rgba(0, 0, 0, .12)); }
.form .is-invalid { border-color: #d64545 !important; }
.form__consent { display: flex !important; align-items: flex-start; gap: 10px; font-weight: 400 !important; font-size: 14px; opacity: .8; }
.form__consent input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--accent); flex: none; }
.form__consent.is-invalid { color: #d64545; opacity: 1; }
.form__status { min-height: 1.3em; font-size: 14.5px; font-weight: 600; }

/* ---------- concept label (portfolio demo only) ---------- */
.concept-badge { position: fixed; left: 12px; bottom: 12px; z-index: 45; padding: 6px 12px; border-radius: 8px; background: rgba(0, 0, 0, .78); color: #fff; font-size: 12px; }

/* ---------- reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(32px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .menu {
    position: fixed; inset: var(--header-h) 0 auto; flex-direction: column; gap: 0; padding: 8px 16px 20px;
    background: var(--header-bg); color: var(--header-ink); box-shadow: 0 20px 40px rgba(0, 0, 0, .15);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s var(--ease);
  }
  .menu a { padding: 14px 4px; border-bottom: 1px solid var(--line); font-size: 17px; }
  .header.menu-open { background: var(--header-bg); color: var(--header-ink); }
  .header.menu-open .menu { opacity: 1; transform: none; pointer-events: auto; }
  .burger { display: block; }
}
@media (max-width: 640px) {
  .form__row { grid-template-columns: 1fr; }
  .header__cta .btn { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}