/* ARC IT — site layout + components.
   Builds on the design tokens in styles.css (colors, type, spacing, effects).
   Dark-first "Signal Grid" brand. Sharp geometry, hairline borders, mono accent labels. */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { max-width: 100%; }
a { color: var(--accent); }

.arc-container { max-width: var(--container); margin: 0 auto; padding-left: 28px; padding-right: 28px; }

/* Lucide icon defaults */
.lucide { stroke-width: 1.6; }
i[data-lucide] { display: inline-flex; vertical-align: middle; }

/* ---------------- Accent label (// MONO EYEBROW) ---------------- */
.arc-label {
  font-family: var(--font-mono); font-weight: 500; font-size: 11px;
  letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--accent);
  margin: 0;
}

/* ---------------- Buttons ---------------- */
.arc-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-weight: 600; border-radius: var(--radius-md);
  border: 1px solid transparent; cursor: pointer; white-space: nowrap; text-decoration: none;
  font-size: 13px; padding: 10px 18px; line-height: 1;
  transition: opacity var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.arc-btn:active { transform: translateY(1px); }
.arc-btn[disabled], .arc-btn[data-disabled="true"] { opacity: 0.4; pointer-events: none; }
.arc-btn--primary { background: var(--accent); color: var(--accent-contrast); }
.arc-btn--primary:hover { opacity: 0.85; }
.arc-btn--secondary { background: transparent; color: var(--text-primary); border-color: var(--line); }
.arc-btn--secondary:hover { border-color: var(--line-strong); background: var(--surface-hover); }
.arc-btn--ghost { background: transparent; color: var(--accent); padding-left: 0; padding-right: 0; }
.arc-btn--ghost:hover { opacity: 0.8; }
.arc-btn--sm { font-size: 12px; padding: 7px 14px; }
.arc-btn--lg { font-size: 15px; padding: 13px 24px; }

/* ---------------- Navbar ---------------- */
.arc-nav {
  display: flex; align-items: center; gap: 28px; padding: 16px 28px;
  border-bottom: 1px solid var(--line); background: var(--surface-page); position: relative;
}
.arc-nav__inner { display: flex; align-items: center; gap: 28px; width: 100%; max-width: var(--container); margin: 0 auto; }
.arc-nav__brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text-primary); white-space: nowrap; }
.arc-nav__logo { width: 30px; height: auto; display: block; }
.arc-nav__wordmark { font-family: var(--font-wordmark); font-size: 18px; letter-spacing: var(--tracking-wordmark); }
.arc-nav__links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.arc-nav__link {
  font-family: var(--font-body); font-size: 13px; font-weight: 500;
  color: var(--text-secondary); text-decoration: none; transition: color var(--dur-fast) var(--ease-out);
}
.arc-nav__link:hover, .arc-nav__link--active { color: var(--text-primary); }
.arc-nav__meta {
  font-family: var(--font-mono); font-weight: 500; font-size: 9.5px;
  letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--text-faint);
}
.arc-nav__burger {
  display: none; margin-left: auto; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.arc-nav__burger span {
  display: block; width: 20px; height: 2px; background: var(--text-primary); border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.arc-nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.arc-nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.arc-nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.arc-nav__drawer { display: none; }

@media (max-width: 820px) {
  .arc-nav__links { display: none; }
  .arc-nav__burger { display: flex; }
  .arc-nav__drawer[data-open="true"] {
    display: block; position: absolute; top: 100%; left: 0; right: 0; z-index: 200;
    background: var(--surface-panel); border-bottom: 1px solid var(--line-strong);
    box-shadow: var(--shadow-raised); padding: 12px 20px 20px;
    animation: arc-nav-drop var(--dur-med) var(--ease-out);
  }
  @keyframes arc-nav-drop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
  .arc-nav__drawer a.arc-nav__link {
    display: block; font-size: 15px; padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--text-primary);
  }
  .arc-nav__drawer .arc-btn { width: 100%; margin-top: 16px; }
}

/* ---------------- Sections ---------------- */
.arc-section { border-bottom: 1px solid var(--line); padding: 80px 28px; }
.arc-section--tight { padding: 64px 28px; }
.arc-section__inner { max-width: var(--container); margin: 0 auto; }
.arc-section--panel { background: var(--surface-panel); }

.arc-section__head { margin-bottom: 40px; max-width: 640px; }
.arc-section__head .arc-label { margin-bottom: 16px; }
.arc-section__title {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(28px, 3.4vw, 38px);
  letter-spacing: var(--tracking-display); line-height: 1.12; margin: 0;
}
.arc-section__sub { font-size: 16px; color: var(--text-secondary); line-height: var(--leading-body); margin: 16px 0 0; }

/* ---------------- Hero ---------------- */
.arc-hero { border-bottom: 1px solid var(--line); padding: 92px 28px 76px; }
.arc-hero__inner { max-width: var(--container); margin: 0 auto; }
.arc-hero h1 {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(40px, 5.4vw, 66px);
  line-height: 1.06; letter-spacing: var(--tracking-display); margin: 22px 0 0; max-width: 880px; text-wrap: balance;
}
.arc-hero__sub { font-size: 18px; color: var(--text-secondary); line-height: var(--leading-body); margin: 24px 0 0; max-width: 600px; }
.arc-hero__actions { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }
.arc-hero__locale {
  display: flex; align-items: center; gap: 10px; margin-top: 30px;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--text-faint);
}

/* ---------------- Cards & grids ---------------- */
.arc-grid { display: grid; gap: 16px; }
.arc-grid--services { grid-template-columns: repeat(auto-fit, minmax(248px, 1fr)); }
.arc-grid--why { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.arc-grid--ways { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }

.arc-card {
  position: relative; background: var(--surface-panel); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 24px; overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.arc-card--topline::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: var(--topline-height); background: var(--topline);
}
a.arc-card { text-decoration: none; display: block; height: 100%; }
.arc-card--interactive { cursor: pointer; }
.arc-card--interactive:hover { border-color: var(--line-strong); }
.arc-card__kicker {
  font-family: var(--font-mono); font-weight: 500; font-size: 9.5px;
  letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--text-faint);
}
.arc-card__icon { color: var(--accent); display: flex; margin-bottom: 14px; }
.arc-card__title { font-family: var(--font-display); font-weight: 600; font-size: 17px; color: var(--text-primary); margin: 0 0 8px; }
.arc-card__body { font-size: 13.5px; line-height: var(--leading-body); color: var(--text-secondary); }
.arc-card__more { margin-top: 14px; color: var(--accent); font-weight: 600; font-size: 12.5px; }

/* Benefits strip (joined cells) */
.arc-benefits {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface-panel);
}
.arc-benefits__cell { padding: 26px 24px; border-left: 1px solid var(--line); }
.arc-benefits__cell:first-child { border-left: none; }
.arc-benefits__icon { color: var(--accent); display: flex; }
.arc-benefits__t { font-family: var(--font-display); font-weight: 600; font-size: 17px; margin: 14px 0 6px; }
.arc-benefits__b { font-size: 13.5px; line-height: var(--leading-body); color: var(--text-secondary); }

/* Two-column prose row (Promise) */
.arc-split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.arc-split__title {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(26px, 3vw, 34px);
  letter-spacing: var(--tracking-display); line-height: 1.15; margin: 16px 0 0;
}
.arc-split__body { font-size: 16px; color: var(--text-secondary); line-height: var(--leading-body); margin: 0; }

/* Ways AI could work — bullet panels */
.arc-way {
  display: flex; gap: 14px; padding: 20px 22px; background: var(--surface-panel);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
}
.arc-way__icon { color: var(--accent); flex: none; margin-top: 1px; }
.arc-way__text { font-size: 14.5px; line-height: var(--leading-body); color: var(--text-primary); }

/* Why cards (no topline) */
.arc-why { padding: 24px; background: var(--surface-panel); border: 1px solid var(--line); border-radius: var(--radius-lg); }
.arc-why__icon { color: var(--accent); display: flex; }
.arc-why__t { font-family: var(--font-display); font-weight: 600; font-size: 16px; margin: 13px 0 6px; }
.arc-why__b { font-size: 13.5px; line-height: var(--leading-body); color: var(--text-secondary); }

/* ---------------- Experience band (centered) ---------------- */
.arc-experience { text-align: center; }
.arc-experience .arc-label { display: inline-block; }
.arc-experience h2 {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: var(--tracking-display); margin: 16px auto 0; max-width: 640px; line-height: 1.12;
}
.arc-experience p { font-size: 16px; color: var(--text-secondary); line-height: var(--leading-body); margin: 16px auto 0; max-width: 600px; }
.arc-experience__actions { display: flex; gap: 12px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }

/* ---------------- Contact ---------------- */
.arc-contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; }
.arc-contact__title {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(26px, 3vw, 34px);
  letter-spacing: var(--tracking-display); margin: 16px 0 18px; line-height: 1.15;
}
.arc-contact__lead { font-size: 15.5px; color: var(--text-secondary); line-height: var(--leading-body); max-width: 400px; }
.arc-contact__list { display: grid; gap: 12px; margin-top: 26px; }
.arc-contact__row { display: flex; align-items: center; gap: 11px; font-size: 14px; color: var(--text-secondary); }
.arc-contact__row a { color: inherit; text-decoration: none; }
.arc-contact__row a:hover { color: var(--text-primary); }
.arc-contact__icon { color: var(--accent); display: flex; }

/* ---------------- Forms ---------------- */
.arc-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.arc-field { display: grid; gap: 7px; }
.arc-field--full { grid-column: span 2; }
.arc-field label {
  font-family: var(--font-mono); font-weight: 500; font-size: 10.5px;
  letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--text-secondary);
}
.arc-input, .arc-select, .arc-textarea {
  width: 100%; font-family: var(--font-body); font-size: 14px; color: var(--text-primary);
  background: var(--surface-panel); border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 11px 13px; transition: border-color var(--dur-fast) var(--ease-out);
}
.arc-input::placeholder, .arc-textarea::placeholder { color: var(--text-faint); }
.arc-input:focus, .arc-select:focus, .arc-textarea:focus { outline: none; border-color: var(--accent-line); }
.arc-input[aria-invalid="true"], .arc-textarea[aria-invalid="true"] { border-color: var(--status-danger); }
.arc-textarea { resize: vertical; min-height: 104px; }
.arc-select { appearance: none; cursor: pointer; }
.arc-consent { grid-column: span 2; display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--text-secondary); }
.arc-consent input { margin-top: 3px; accent-color: var(--accent); }
.arc-form__note { font-size: 12px; color: var(--text-faint); margin: 0; }
.arc-form__legal { grid-column: span 2; font-size: 11px; color: var(--text-faint); margin: 0; line-height: var(--leading-body); }
.arc-form__legal a { color: var(--text-secondary); text-decoration: none; }
.arc-form__legal a:hover { color: var(--text-primary); }
/* Invisible reCAPTCHA: hide the floating badge (legal text shown next to the form instead) */
.grecaptcha-badge { visibility: hidden; }
.arc-form__status { grid-column: span 2; font-size: 14px; color: var(--text-secondary); min-height: 18px; }
.arc-form__status[data-state="error"] { color: var(--status-danger); }
.arc-form__status[data-state="ok"] { color: var(--status-success); }

/* ---------------- Sub-page sections ---------------- */
.arc-prose { display: grid; grid-template-columns: 1fr 1.3fr; gap: 56px; align-items: start; }
.arc-prose__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(24px, 2.8vw, 32px); letter-spacing: var(--tracking-display); line-height: 1.15; margin: 16px 0 0; }
.arc-prose__body { display: grid; gap: 16px; }
.arc-prose__body p { font-size: 16px; color: var(--text-secondary); line-height: var(--leading-body); margin: 0; }

.arc-grid--features { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

/* FAQ — native details/summary, no JS */
.arc-faq { max-width: 820px; }
.arc-faq__item { border-bottom: 1px solid var(--line); }
.arc-faq__item > summary {
  list-style: none; cursor: pointer; padding: 16px 0; display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display); font-weight: 600; font-size: 15px; color: var(--text-primary);
}
.arc-faq__item > summary::-webkit-details-marker { display: none; }
.arc-faq__item > summary::after { content: "+"; margin-left: auto; color: var(--accent); font-family: var(--font-mono); font-size: 18px; }
.arc-faq__item[open] > summary::after { content: "\2212"; }
.arc-faq__a { font-size: 14px; line-height: var(--leading-body); color: var(--text-secondary); margin: 0; padding: 0 0 16px; }

/* CTA band (centered) */
.arc-cta { text-align: center; }
.arc-cta h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(28px, 3.4vw, 40px); letter-spacing: var(--tracking-display); margin: 0 auto; max-width: 640px; line-height: 1.12; }
.arc-cta p { font-size: 16px; color: var(--text-secondary); line-height: var(--leading-body); margin: 16px auto 0; max-width: 560px; }
.arc-cta__actions { display: flex; gap: 12px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }

/* ---------------- Footer ---------------- */
.arc-footer { padding: 48px 28px; }
.arc-footer__inner { max-width: var(--container); margin: 0 auto; }
.arc-footer__top { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.arc-footer__brand { display: flex; align-items: center; gap: 12px; }
.arc-footer__brand img { width: 28px; height: auto; }
.arc-footer__brand .arc-wordmark { font-size: 17px; }
.arc-footer__tag { font-size: 13px; color: var(--text-secondary); max-width: 360px; line-height: var(--leading-body); }
.arc-footer__cols { margin-left: auto; display: flex; gap: 28px; flex-wrap: wrap; }
.arc-footer__col { display: grid; gap: 8px; align-content: start; }
.arc-footer__col-h { font-family: var(--font-mono); font-size: 10px; letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--text-faint); margin-bottom: 2px; }
.arc-footer__col a { font-size: 13px; color: var(--text-secondary); text-decoration: none; }
.arc-footer__col a:hover { color: var(--text-primary); }
.arc-footer__bar {
  border-top: 1px solid var(--line); margin-top: 32px; padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
}
.arc-footer__meta {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.1em; color: var(--text-faint); text-transform: uppercase;
}

/* ---------------- Legal / prose pages ---------------- */
.arc-legal { padding: 64px 28px 88px; }
.arc-legal__inner { max-width: 820px; margin: 0 auto; }
.arc-legal h1 {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(32px, 4vw, 44px);
  letter-spacing: var(--tracking-display); line-height: 1.1; margin: 0 0 8px;
}
.arc-legal__meta { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); margin: 0 0 8px; }
.arc-legal__intro { font-size: 16px; color: var(--text-secondary); line-height: var(--leading-body); }
.arc-legal h2 {
  font-family: var(--font-display); font-weight: 600; font-size: 20px; letter-spacing: var(--tracking-display);
  margin: 40px 0 12px; padding-bottom: 10px; border-bottom: 1px solid var(--line); color: var(--text-primary);
}
.arc-legal p, .arc-legal li { font-size: 15px; line-height: var(--leading-body); color: var(--text-secondary); }
.arc-legal p { margin: 0 0 14px; }
.arc-legal strong { color: var(--text-primary); font-weight: 600; }
.arc-legal ul { margin: 0 0 16px; padding-left: 20px; display: grid; gap: 8px; }
.arc-legal a { color: var(--accent); text-decoration: none; }
.arc-legal a:hover { text-decoration: underline; }
.arc-legal address { font-style: normal; color: var(--text-secondary); line-height: var(--leading-body); font-size: 15px; }

/* ---------------- Booking ---------------- */
.arc-book__frame {
  width: 100%; min-height: 1500px; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--surface-panel); overflow: hidden;
}
.arc-book__frame iframe { width: 100%; height: 1500px; border: 0; display: block; }

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .arc-split, .arc-contact, .arc-prose { grid-template-columns: 1fr; gap: 32px; }
  .arc-section { padding: 56px 24px; }
  .arc-hero { padding: 64px 24px 56px; }
}
@media (max-width: 560px) {
  .arc-form { grid-template-columns: 1fr; }
  .arc-field--full, .arc-consent, .arc-form__status, .arc-form__note { grid-column: span 1; }
  .arc-footer__cols { margin-left: 0; }
}