/* ============================================================
   AireyAi — shared design system (Stripe-premium-light + AireyAi green)
   Linked by every page. Change here, changes everywhere.
   ============================================================ */

:root {
  /* Surfaces */
  --bg:            #ffffff;
  --bg-soft:       #f6f9fc;   /* alternating section tint */
  --bg-dark:       #0b1f33;   /* dark brand sections (navy, not black) */
  --surface:       #ffffff;

  /* Text — Stripe navy, not black */
  --heading:       #061b31;
  --label:         #273951;
  --body:          #4a5b73;
  --muted:         #8090a6;
  --on-dark:       #ffffff;
  --on-dark-soft:  rgba(255,255,255,0.72);

  /* AireyAi green, refined for a light canvas (premium emerald, not neon) */
  --brand:         #0b8a5b;
  --brand-strong:  #097049;
  --brand-soft:    #e6f5ee;
  --brand-tint:    #f1faf5;
  --brand-bright:  #12b886;   /* highlight only, sparing */

  /* Borders */
  --border:        #e5edf5;
  --border-strong: #d4dded;

  /* Blue-tinted Stripe shadows — elevation that feels designed */
  --sh-1: rgba(23,23,23,0.06) 0px 3px 8px;
  --sh-2: rgba(23,23,23,0.08) 0px 12px 30px;
  --sh-3: rgba(50,50,93,0.16) 0px 28px 45px -28px, rgba(0,0,0,0.08) 0px 16px 32px -18px;
  --sh-brand: rgba(11,138,91,0.20) 0px 18px 40px -18px;

  /* Radius — conservative, never pills on cards */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-pill: 999px;

  /* Type scale */
  --fs-hero:  clamp(2.6rem, 6vw, 4.1rem);
  --fs-h2:    clamp(1.9rem, 3.6vw, 2.7rem);
  --fs-h3:    1.35rem;
  --fs-lead:  clamp(1.05rem, 1.6vw, 1.25rem);
  --fs-body:  1rem;
  --fs-sm:    0.9rem;
  --fs-xs:    0.8rem;

  --maxw: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--body);
  font-family: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 400;
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  color: var(--heading);
  font-weight: 400;          /* Stripe move: light-weight display = luxury */
  letter-spacing: -0.022em;
  line-height: 1.08;
}
h1 { font-size: var(--fs-hero); font-weight: 300; letter-spacing: -0.032em; }
h2 { font-size: var(--fs-h2);  font-weight: 350; }
h3 { font-size: var(--fs-h3);  font-weight: 500; letter-spacing: -0.01em; line-height: 1.25; }

a { color: var(--brand-strong); text-decoration: none; }
strong { color: var(--heading); font-weight: 600; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.eyebrow {
  display: inline-block; font-size: var(--fs-xs); font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--brand-strong);
  margin-bottom: 16px;
}
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { font-size: var(--fs-lead); color: var(--body); margin-top: 14px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--fs-body); font-weight: 500; line-height: 1;
  padding: 13px 22px; border-radius: var(--r-pill); border: 1px solid transparent;
  cursor: pointer; transition: transform .18s var(--ease), background .18s, box-shadow .18s, border-color .18s;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--sh-brand); }
.btn-primary:hover { background: var(--brand-strong); transform: translateY(-1px); }
.btn-ghost { background: var(--surface); color: var(--heading); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-strong); }
.btn-on-dark { background: #fff; color: var(--heading); }
.btn-on-dark:hover { background: var(--brand); color: #fff; transform: translateY(-1px); }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }

/* ---------- Nav (shared) ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,0.82); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 18px; height: 66px; }
.brand { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.03em; color: var(--heading); margin-right: auto; }
.brand em { font-style: normal; color: var(--brand); }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a:not(.btn) { color: var(--label); font-size: var(--fs-sm); font-weight: 500; transition: color .15s; }
.nav-links a:not(.btn):hover { color: var(--brand-strong); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; }
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 16px;
    position: absolute; top: 66px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 22px 24px; box-shadow: var(--sh-2);
  }
  .nav-links.open .btn-primary { width: 100%; justify-content: center; }
  .nav-toggle { display: block; }
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 28px; transition: transform .2s var(--ease), box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--sh-3); border-color: var(--border-strong); }
.card-icon {
  width: 44px; height: 44px; border-radius: var(--r-md); display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand-strong); margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 8px; }
.card p { font-size: var(--fs-sm); color: var(--body); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 7px; font-size: var(--fs-xs); font-weight: 600;
  padding: 6px 13px; border-radius: var(--r-pill); background: var(--brand-soft); color: var(--brand-strong);
  border: 1px solid rgba(11,138,91,0.18);
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-bright); }
.price-from { color: var(--brand-strong); font-weight: 600; }

/* ---------- Dark brand section ---------- */
.section-dark { background: var(--bg-dark); color: var(--on-dark); }
.section-dark h1, .section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: var(--on-dark-soft); }

/* ---------- Footer ---------- */
.footer { background: var(--bg-dark); color: var(--on-dark-soft); padding: 64px 0 36px; }
.footer a { color: var(--on-dark-soft); transition: color .15s; }
.footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; margin-bottom: 44px; }
.footer h4 { color: #fff; font-size: var(--fs-sm); font-weight: 600; margin-bottom: 16px; letter-spacing: 0; }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: var(--fs-sm); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; font-size: var(--fs-xs); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }

/* ---------- Reveal animation (CSS-only, no GSAP) ---------- */
@media (prefers-reduced-motion: no-preference) {
  /* Gated on html.js so the page is fully visible without JS (graceful degradation) */
  html.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
  html.js .reveal.in { opacity: 1; transform: none; }
}

/* ---------- Persistent WhatsApp contact (every page) ---------- */
.wa-float { position: fixed; bottom: 22px; right: 22px; z-index: 50; width: 54px; height: 54px; border-radius: 50%; background: #25D366; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(37,211,102,0.4); transition: transform .18s var(--ease); }
.wa-float:hover { transform: scale(1.06); }
.wa-float svg { width: 28px; height: 28px; fill: #fff; }

/* ---------- Utility grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ---------- Theme toggle button (injected into nav by theme.js) ---------- */
.theme-toggle { background: var(--bg-soft); border: 1px solid var(--border-strong); border-radius: 50%; width: 38px; height: 38px; display: grid; place-items: center; cursor: pointer; color: var(--label); transition: color .15s, border-color .15s, transform .15s, background .15s; flex-shrink: 0; }
.theme-toggle:hover { color: var(--brand-strong); border-color: var(--brand); transform: rotate(12deg); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .moon { display: none; }
html[data-theme="dark"] .theme-toggle .sun { display: none; }
html[data-theme="dark"] .theme-toggle .moon { display: block; }

/* ---------- Dark mode ---------- */
html[data-theme="dark"] {
  --bg: #0b1220; --bg-soft: #121c30; --bg-dark: #070d18; --surface: #14203a;
  --heading: #eef3fb; --label: #c6d2e4; --body: #9db0cb; --muted: #76889f;
  --border: rgba(255,255,255,0.10); --border-strong: rgba(255,255,255,0.20);
  --brand: #16c079; --brand-strong: #34dd90; --brand-soft: rgba(22,192,121,0.15);
  --brand-tint: rgba(22,192,121,0.08); --brand-bright: #34dd90;
  --sh-1: rgba(0,0,0,0.35) 0px 3px 10px;
  --sh-2: rgba(0,0,0,0.45) 0px 14px 34px;
  --sh-3: rgba(0,0,0,0.55) 0px 30px 50px -28px, rgba(0,0,0,0.40) 0px 16px 32px -18px;
  --sh-brand: rgba(22,192,121,0.30) 0px 18px 44px -18px;
}
html[data-theme="dark"] body {
  background-image: radial-gradient(900px circle at 20% -10%, rgba(22,192,121,0.05), transparent 50%), radial-gradient(700px circle at 90% 0%, rgba(91,79,232,0.05), transparent 45%);
}
html[data-theme="dark"] .nav { background: rgba(11,18,32,0.82); }
/* neutralise per-page light hero gradients in dark */
html[data-theme="dark"] .hero::before,
html[data-theme="dark"] .price-hero::before {
  background: radial-gradient(60% 50% at 85% 0%, rgba(22,192,121,0.10), transparent 70%), var(--bg) !important;
}
html[data-theme="dark"] img.hero-shot,
html[data-theme="dark"] .work-item,
html[data-theme="dark"] .fw-shots a { border-color: var(--border-strong); }