/* =====================================================
   Vertex Siam Group — Trust & Authority design system
   Navy #1E3A8A · Gold #B45309 · Prompt / Sarabun
   ===================================================== */

:root {
  --color-primary: #1E3A8A;
  --color-primary-dark: #16295F;
  --color-on-primary: #FFFFFF;
  --color-secondary: #1E40AF;
  --color-accent: #B45309;
  --color-accent-hover: #92400E;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-foreground: #0F172A;
  --color-muted-text: #475569;
  --color-muted: #E9EEF5;
  --color-border: #CBD5E1;
  --color-ring: #1E3A8A;

  --font-head: "Prompt", "Poppins", sans-serif;
  --font-body: "Sarabun", "Open Sans", sans-serif;

  --space-1: 8px;  --space-2: 16px; --space-3: 24px;
  --space-4: 32px; --space-5: 48px; --space-6: 64px; --space-7: 96px;

  --radius: 14px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 6px 24px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 18px 48px rgba(30, 58, 138, 0.18);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 250ms;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-foreground);
  background: var(--color-background);
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

h1, h2, h3 { font-family: var(--font-head); line-height: 1.25; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 2 * var(--space-3), 1160px);
  margin-inline: auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 48px;
  padding: 12px 28px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out),
              transform var(--dur) var(--ease-out);
}
.btn:active { transform: scale(0.97); }

.btn--primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn--primary:hover { background: var(--color-secondary); box-shadow: var(--shadow-md); }

.btn--accent { background: var(--color-accent); color: #fff; }
.btn--accent:hover { background: var(--color-accent-hover); box-shadow: var(--shadow-md); }

.btn--ghost { border-color: rgba(255, 255, 255, 0.55); color: #fff; background: transparent; }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

.btn--full { width: 100%; }

/* ===== Navigation ===== */
.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  padding-block: 18px;
  transition: background-color var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out),
              padding var(--dur) var(--ease-out);
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding-block: 10px;
}

.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }

.nav__logo {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.12);
  transition: box-shadow var(--dur) var(--ease-out);
}
.nav.is-scrolled .nav__logo { box-shadow: none; }

.nav__logo-stack {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
}
.nav__logo-img { height: 100%; width: auto; display: block; }
.nav__logo-icon {
  height: 100%;
  width: auto;
  color: var(--color-primary);
  flex-shrink: 0;
}

.nav__links { display: flex; gap: var(--space-4); }
.nav__links a {
  position: relative;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 0.98rem;
  color: rgba(255, 255, 255, 0.88);
  padding-block: 6px;
  transition: color var(--dur) var(--ease-out);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}
.nav__links a:hover::after, .nav__links a.is-active::after { transform: scaleX(1); }
.nav__links a:hover { color: #fff; }
.nav.is-scrolled .nav__links a { color: var(--color-muted-text); }
.nav.is-scrolled .nav__links a:hover, .nav.is-scrolled .nav__links a.is-active { color: var(--color-primary); }

.nav__actions { display: flex; align-items: center; gap: var(--space-2); }
.nav__cta { min-height: 44px; padding: 9px 22px; font-size: 0.95rem; }

/* Language toggle */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out);
}
.lang-toggle__opt { color: rgba(255, 255, 255, 0.55); transition: color var(--dur) var(--ease-out); }
.lang-toggle__opt.is-active { color: #fff; }
.lang-toggle__divider { width: 1px; height: 14px; background: rgba(255, 255, 255, 0.35); }
.lang-toggle:hover { border-color: #fff; background: rgba(255, 255, 255, 0.1); }

.nav.is-scrolled .lang-toggle { border-color: var(--color-border); }
.nav.is-scrolled .lang-toggle__opt { color: #94A3B8; }
.nav.is-scrolled .lang-toggle__opt.is-active { color: var(--color-primary); }
.nav.is-scrolled .lang-toggle__divider { background: var(--color-border); }
.nav.is-scrolled .lang-toggle:hover { background: var(--color-muted); }

/* Burger */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}
.nav__burger span {
  height: 2.5px;
  width: 100%;
  border-radius: 2px;
  background: #fff;
  transition: transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out);
}
.nav.is-scrolled .nav__burger span, .nav.is-open .nav__burger span { background: var(--color-primary); }
.nav.is-open .nav__burger span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: 140px var(--space-7);
  background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 55%, #27479B 100%);
  color: #fff;
  overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.hero__grid { position: absolute; inset: 0; }

.hero__art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__blip { animation: blipPulse 3.2s ease-in-out infinite; }
.hero__blip--2 { animation-delay: 1.1s; }
.hero__blip--3 { animation-delay: 2.2s; }
@keyframes blipPulse {
  0%, 100% { opacity: 0.25; }
  40% { opacity: 1; }
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  will-change: transform;
}
.hero__orb--1 {
  width: 520px; height: 520px;
  background: #2E5BBF;
  top: -160px; right: -120px;
  animation: drift 14s ease-in-out infinite alternate;
}
.hero__orb--2 {
  width: 420px; height: 420px;
  background: rgba(180, 83, 9, 0.55);
  bottom: -180px; left: -140px;
  animation: drift 18s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(40px, 30px, 0) scale(1.08); }
}

.hero__inner { position: relative; max-width: 780px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 500;
  color: #FDE68A;
}
.hero__eyebrow svg { color: var(--color-accent); flex-shrink: 0; }

.hero__title {
  margin-top: var(--space-3);
  font-size: clamp(2.1rem, 5.4vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero__sub {
  margin-top: var(--space-3);
  max-width: 58ch;
  font-size: clamp(1.02rem, 1.6vw, 1.15rem);
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
}

.hero__cta { margin-top: var(--space-4); display: flex; flex-wrap: wrap; gap: var(--space-2); }

.hero__stats {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}
.hero__stat dt {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.hero__stat dd { margin-top: 2px; font-size: 0.95rem; color: rgba(255, 255, 255, 0.72); }

/* Hero entrance animation */
.anim-hero {
  opacity: 0;
  transform: translateY(26px);
  animation: heroIn 700ms var(--ease-out) forwards;
  animation-delay: calc(var(--d, 0) * 110ms + 120ms);
}
@keyframes heroIn {
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Page hero (sub-pages) ===== */
.page-hero {
  position: relative;
  padding: 160px 0 var(--space-6);
  background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 55%, #27479B 100%);
  color: #fff;
  overflow: hidden;
}
.page-hero .container { position: relative; max-width: 780px; text-align: center; }

.page-hero__title {
  margin-top: var(--space-2);
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.page-hero__sub {
  margin-top: var(--space-2);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
}

/* ===== Product filter tabs ===== */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
}

.filter-tab {
  min-height: 44px;
  padding: 10px 20px;
  border: 1.5px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-muted-text);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out);
}
.filter-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ===== Product cards ===== */
.cards--products { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.product-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.product-card.is-filtered-out { display: none; }
.product-card.is-filtering { animation: cardIn 380ms var(--ease-out) both; }
@keyframes cardIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.product__media {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  background: #fff;
  border-bottom: 1px solid var(--color-muted);
}
.product__media img { max-width: 100%; max-height: 100%; object-fit: contain; }
.product__media--ph {
  background: linear-gradient(135deg, var(--color-muted), #F1F5F9);
  color: rgba(30, 58, 138, 0.35);
}

.product__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-3);
}
.product__brand {
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(30, 58, 138, 0.08);
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.product__body h3 { margin-top: var(--space-2); font-size: 1.12rem; font-weight: 600; color: var(--color-primary-dark); }
.product__body p { margin-top: var(--space-1); flex: 1; color: var(--color-muted-text); font-size: 0.94rem; }

.products__note {
  margin-top: var(--space-5);
  text-align: center;
  color: var(--color-muted-text);
}
.products__cta { margin-top: var(--space-3); text-align: center; }

/* ===== Trust bar ===== */
.trust { padding-block: var(--space-5); background: var(--color-surface); border-bottom: 1px solid var(--color-muted); }
.trust__label {
  text-align: center;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted-text);
}
.trust__logos {
  margin-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-3) var(--space-6);
}
.trust__logo {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.05rem;
  color: #94A3B8;
  transition: color var(--dur) var(--ease-out);
}
.trust__logo:hover { color: var(--color-primary); }

/* ===== Sections ===== */
.section { padding-block: var(--space-7); }

.section__head { max-width: 640px; margin-inline: auto; text-align: center; margin-bottom: var(--space-6); }
.section__head--onDark .section__title { color: #fff; }

.section__eyebrow {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.section__eyebrow--gold { color: #FCD34D; }

.section__title {
  margin-top: var(--space-1);
  font-size: clamp(1.7rem, 3.6vw, 2.4rem);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.section__sub { margin-top: var(--space-2); color: var(--color-muted-text); font-size: 1.05rem; }

/* ===== Services cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: var(--space-3);
}

.card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-muted);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 58, 138, 0.25);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  transition: transform var(--dur) var(--ease-out);
}
.card:hover .card__icon { transform: scale(1.08) rotate(-3deg); }

.card h3 { margin-top: var(--space-3); font-size: 1.2rem; font-weight: 600; color: var(--color-primary-dark); }
.card p { margin-top: var(--space-1); color: var(--color-muted-text); font-size: 0.98rem; }

/* ===== About ===== */
.about { background: var(--color-surface); }

.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: var(--space-6);
  align-items: center;
}

.about__media { position: relative; }

.about__photo {
  aspect-ratio: 6 / 7;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about__badge {
  position: absolute;
  right: -18px;
  bottom: 28px;
  display: flex;
  flex-direction: column;
  padding: 18px 26px;
  border-radius: var(--radius);
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.about__badge strong { font-family: var(--font-head); font-size: 1.9rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.about__badge span { font-size: 0.88rem; opacity: 0.92; }

.about__content .section__title { margin-top: var(--space-1); }
.about__text { margin-top: var(--space-3); color: var(--color-muted-text); }

.about__points { margin-top: var(--space-3); list-style: none; display: grid; gap: var(--space-2); }
.about__points li { display: flex; align-items: center; gap: 12px; font-weight: 500; }
.about__points svg {
  flex-shrink: 0;
  padding: 4px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(180, 83, 9, 0.12);
  color: var(--color-accent);
}

.about__content .btn { margin-top: var(--space-4); }

/* ===== Metrics band ===== */
.metrics {
  padding-block: var(--space-7);
  background: linear-gradient(150deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
}

.metrics__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  text-align: center;
}

.metric { display: grid; gap: 6px; padding: var(--space-3); border-radius: var(--radius); transition: background-color var(--dur) var(--ease-out); }
.metric:hover { background: rgba(255, 255, 255, 0.06); }
.metric strong {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: #FCD34D;
  font-variant-numeric: tabular-nums;
}
.metric strong [data-i18n] { font-size: 0.5em; font-weight: 600; margin-left: 4px; }
.metric > span { color: rgba(255, 255, 255, 0.82); font-size: 1rem; }

/* ===== Partners ===== */
.cards--partners { grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }

.card--partner {
  display: flex;
  flex-direction: column;
}
.card--partner h3 { margin-top: 0; }

.partner__logo {
  height: 44px;
  display: flex;
  align-items: center;
  margin-bottom: var(--space-2);
}
.partner__logo img {
  max-height: 100%;
  max-width: 150px;
  object-fit: contain;
  /* Render every brand logo in a uniform dark monochrome so white,
     colored, and black originals all sit consistently on the card */
  filter: brightness(0);
  opacity: 0.62;
  transition: opacity var(--dur) var(--ease-out);
}
.card--partner:hover .partner__logo img { opacity: 0.95; }
.card--partner p { flex: 1; }

/* ===== Contact ===== */
.contact { background: var(--color-surface); }

.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: var(--space-6);
  align-items: start;
}

.contact__info .section__title { margin-top: var(--space-1); }

.contact__list { margin-top: var(--space-4); list-style: none; display: grid; gap: var(--space-3); }
.contact__list li { display: flex; align-items: flex-start; gap: 14px; color: var(--color-muted-text); }
.contact__list svg { flex-shrink: 0; margin-top: 3px; color: var(--color-accent); }
.contact__list a { font-weight: 500; color: var(--color-primary); transition: color var(--dur) var(--ease-out); }
.contact__list a:hover { color: var(--color-accent); }

.contact__form {
  padding: var(--space-4);
  background: var(--color-background);
  border: 1px solid var(--color-muted);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: var(--space-3);
}

.field { display: grid; gap: 8px; }
.field label { font-family: var(--font-head); font-weight: 500; font-size: 0.95rem; }
.field label span { color: #DC2626; }

.field input, .field textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-foreground);
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
  resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: #94A3B8; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.14);
}

.field__error {
  display: none;
  font-size: 0.86rem;
  color: #DC2626;
}
.field.has-error input, .field.has-error textarea { border-color: #DC2626; }
.field.has-error .field__error { display: block; }

/* Honeypot spam trap — hidden from real visitors, left in the tab/DOM
   for bots that auto-fill every field regardless of visibility */
.field--hp {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Submit button loading state */
.btn__spinner {
  display: none;
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn.is-loading { pointer-events: none; opacity: 0.85; }
.btn.is-loading .btn__spinner { display: inline-block; }

.form__success {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(22, 163, 74, 0.1);
  color: #15803D;
  font-weight: 500;
}
.form__success.is-visible { display: flex; }

.form__error-msg {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(220, 38, 38, 0.1);
  color: #DC2626;
  font-weight: 500;
}
.form__error-msg.is-visible { display: flex; }

/* ===== Footer ===== */
.footer {
  padding-block: var(--space-6) var(--space-4);
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.78);
}

.footer__inner { display: grid; gap: var(--space-4); text-align: center; justify-items: center; }

.nav__logo--footer { box-shadow: none; }
.nav__logo-img--footer { height: 34px; }

.footer__brand p { margin-top: var(--space-2); max-width: 40ch; font-size: 0.95rem; }

.footer__links { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3) var(--space-4); }
.footer__links a {
  font-family: var(--font-head);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.78);
  transition: color var(--dur) var(--ease-out);
}
.footer__links a:hover { color: #FCD34D; }

.footer__copy { font-size: 0.85rem; color: rgba(255, 255, 255, 0.5); }

/* ===== Scroll-reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 650ms var(--ease-out), transform 650ms var(--ease-out);
  transition-delay: calc(var(--d, 0) * 90ms);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .about__grid, .contact__grid { grid-template-columns: 1fr; }
  .about__media { max-width: 480px; }
  .about__badge { right: 12px; }
}

@media (max-width: 768px) {
  .nav__cta { display: none; }
  .nav__burger { display: flex; }

  .nav__links {
    position: fixed;
    top: 0; right: 0;
    height: 100dvh;
    width: min(78vw, 320px);
    flex-direction: column;
    gap: var(--space-2);
    padding: 110px var(--space-4) var(--space-4);
    background: var(--color-surface);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 320ms var(--ease-out);
    visibility: hidden;
  }
  .nav.is-open .nav__links { transform: translateX(0); visibility: visible; }
  .nav__links a { color: var(--color-foreground) !important; font-size: 1.1rem; padding-block: 10px; }

  .hero { padding-top: 120px; }
  .hero__stats { gap: var(--space-3) var(--space-4); }
  .section { padding-block: var(--space-6); }
  .metrics { padding-block: var(--space-6); }
}

@media (max-width: 480px) {
  .hero__cta .btn { width: 100%; }
  .contact__form { padding: var(--space-3); }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .anim-hero, .reveal { opacity: 1; transform: none; }
  .hero__orb { animation: none; }
  .hero__sweep { display: none; }
  .hero__blip { animation: none; opacity: 0.8; }
}