/* styles.css — VISTAR design system + components */

:root,
[data-theme='light'] {
  --font-display: 'Cabinet Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;

  /* Brand palette — red / near-black / white */
  --color-bg: #ffffff;
  --color-surface: #f7f8fa;
  --color-surface-2: #f1f3f6;
  --color-surface-offset: #eceef2;
  --color-divider: #e5e7eb;
  --color-border: #dde0e5;

  --color-text: #15181d;
  --color-text-muted: #5a6470;
  --color-text-faint: #9aa4ae;

  --color-primary: #d9383a;         /* brand red */
  --color-primary-hover: #b82e30;
  --color-primary-active: #9e282a;
  --color-primary-highlight: #fbe7e7;
  --color-accent: #2b3a42;         /* charcoal (wordmark) */
  --color-accent-highlight: #e8edef;

  --color-ink: #0e1116;             /* near-black for dark sections */
  --color-on-dark: #ffffff;
  --color-on-dark-muted: #9aa4ae;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(15,24,21,0.06);
  --shadow-md: 0 6px 24px rgba(15,24,21,0.08);
  --shadow-lg: 0 24px 60px rgba(15,24,21,0.14);

  --transition-interactive: 200ms cubic-bezier(0.16,1,0.3,1);

  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1240px;
}

[data-theme='dark'] {
  --color-bg: #0e1116;
  --color-surface: #161a21;
  --color-surface-2: #1c2129;
  --color-surface-offset: #1e242c;
  --color-divider: #262c34;
  --color-border: #2a3038;

  --color-text: #e8ebef;
  --color-text-muted: #9aa4ae;
  --color-text-faint: #5c6670;

  --color-primary: #ff4d52;
  --color-primary-hover: #ff6b6f;
  --color-primary-active: #ff8588;
  --color-primary-highlight: #3a1c1d;
  --color-accent: #c7d3da;
  --color-accent-highlight: #1e2a30;

  --color-ink: #0b0d11;
  --color-on-dark: #ffffff;
  --color-on-dark-muted: #9aa4ae;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.5);
}

/* Type scale */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.6vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1.2rem + 5vw, 4.5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--wide { max-width: var(--content-wide); }
.section { padding-block: clamp(var(--space-12), 6vw, var(--space-24)); }

.eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.eyebrow::before {
  content: '';
  width: 1.75rem;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.5;
}

.lead { color: var(--color-text-muted); font-size: var(--text-lg); line-height: 1.55; max-width: 60ch; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), background var(--transition-interactive);
}
.header--scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
  background: color-mix(in oklab, var(--color-bg) 96%, transparent);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 5rem;
}
.brand { display: inline-flex; align-items: center; gap: var(--space-4); text-decoration: none; color: var(--color-text); }
.brand__mark { width: auto; height: 1.8em; font-size: var(--text-xl); flex-shrink: 0; object-fit: contain; }
.brand__name { display: inline-flex; flex-direction: column; line-height: 1; font-family: var(--font-display); font-weight: 700; font-size: var(--text-xl); letter-spacing: 0.01em; color: var(--color-text); }
.brand__sub { font-family: var(--font-body); font-weight: 500; font-size: 0.28em; letter-spacing: 0.42em; color: var(--color-text-muted); margin-top: 0.4em; text-transform: uppercase; }
[data-theme='dark'] .brand__name { color: #eef1ec; }

.nav { display: none; }
.nav__list { display: flex; align-items: center; gap: var(--space-8); }
.nav__link { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; font-weight: 500; }
.nav__link:hover { color: var(--color-text); }

.header__actions { display: flex; align-items: center; gap: var(--space-3); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.icon-btn:hover { color: var(--color-text); border-color: var(--color-text-faint); }

.menu-btn { display: inline-flex; }
@media (min-width: 860px) {
  .nav { display: block; }
  .menu-btn { display: none; }
}

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 600;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: #fffefb; }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--ghost { color: var(--color-text); border-color: var(--color-border); }
.btn--ghost:hover { border-color: var(--color-text-faint); background: var(--color-surface); }
[data-theme='dark'] .btn--ghost { border-color: var(--color-text-faint); color: #eef1ec; }
[data-theme='dark'] .btn--ghost:hover { border-color: var(--color-text-muted); background: var(--color-surface-2); }

/* mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6) var(--space-8);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  text-decoration: none; color: var(--color-text);
  padding: var(--space-3) 0; font-weight: 500;
  border-bottom: 1px solid var(--color-divider);
}
@media (min-width: 860px) { .mobile-nav { display: none !important; } }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding-top: clamp(var(--space-10), 5vw, var(--space-16)); }
.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-24));
}
@media (min-width: 980px) {
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; gap: var(--space-12); }
}
.hero__title {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-top: var(--space-5);
}
.hero__title em {
  font-style: normal;
  color: var(--color-primary);
}
.hero__sub { margin-top: var(--space-6); color: var(--color-text-muted); font-size: var(--text-lg); line-height: 1.55; max-width: 52ch; }
.hero__cta { margin-top: var(--space-8); display: flex; flex-wrap: wrap; gap: var(--space-3); }

.hero__media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  background: var(--color-ink);
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__media::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(120% 120% at 70% 20%, transparent 40%, color-mix(in oklab, var(--color-ink) 45%, transparent));
}

/* ---------- Stats strip ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-8);
}
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat__num { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; color: var(--color-ink); line-height: 1; white-space: nowrap; }
.stat__label { margin-top: var(--space-2); font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---------- Section heading ---------- */
.section-head { max-width: 64ch; margin-bottom: var(--space-10); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-title { font-size: var(--text-xl); font-weight: 700; margin-top: var(--space-4); }
.section-head--center .section-title { margin-inline: auto; }

/* ---------- Services cards ---------- */
.cards { display: grid; grid-template-columns: 1fr; gap: var(--space-5); }
@media (min-width: 620px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-3);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.card:hover { transform: translateY(-3px); border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.card__icon { width: 2.5rem; height: 2.5rem; color: var(--color-primary); }
.card__title { font-size: var(--text-lg); font-weight: 600; }
.card__text { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }

/* Feature (wide) service card */
.card--feature {
  grid-column: 1 / -1;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  border-color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 6%, var(--color-surface));
}
@media (min-width: 720px) {
  .card--feature { flex-direction: row; align-items: flex-start; gap: var(--space-6); }
  .card--feature .card__icon { width: 3rem; height: 3rem; flex-shrink: 0; }
  .card--feature .card__body { flex: 1; }
}
.card--feature .card__title { font-size: var(--text-xl); }
.card--feature .card__text { font-size: var(--text-base); }
.card__list { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-2); }
.card__list li {
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.06em;
  color: var(--color-primary);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  list-style: none;
}

/* ---------- Approach split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}
@media (min-width: 920px) { .split { grid-template-columns: 1fr 1fr; gap: var(--space-14); } }
.split__media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 4 / 3; }
.split__media img { width: 100%; height: 100%; object-fit: cover; }
.steps { display: flex; flex-direction: column; gap: var(--space-6); margin-top: var(--space-8); }
.step { display: flex; gap: var(--space-4); align-items: flex-start; }
.step__num {
  flex-shrink: 0;
  width: 2.25rem; height: 2.25rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm);
}
.step__title { font-size: var(--text-base); font-weight: 600; }
.step__text { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-1); }

/* ---------- Platforms / tech ---------- */
.tech-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-5); }
@media (min-width: 620px) { .tech-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 920px) { .tech-grid { grid-template-columns: repeat(3, 1fr); } }
.tech-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.tech-card__label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-primary); }
.tech-card__items { margin-top: var(--space-3); display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  font-size: var(--text-sm);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

/* ---------- About ---------- */
.about {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
}
.about__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-10); align-items: center; }
@media (min-width: 900px) { .about__grid { grid-template-columns: 0.85fr 1.15fr; } }
.about__portrait {
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 5;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-active));
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.about__portrait svg { width: 60%; color: color-mix(in oklab, #fff 85%, transparent); }
.about__logo { width: 58%; height: auto; filter: brightness(0) invert(1); opacity: 0.92; }
.about__name { font-size: var(--text-xl); font-weight: 700; margin-top: var(--space-4); }
.about__role { color: var(--color-text-muted); margin-top: var(--space-1); }
.about__bio { color: var(--color-text-muted); margin-top: var(--space-5); }
.about__bio + .about__bio { margin-top: var(--space-4); }

/* ---------- Contact ---------- */
.contact__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-10); }
@media (min-width: 920px) { .contact__grid { grid-template-columns: 1fr 1.1fr; gap: var(--space-12); } }
.contact-details { display: flex; flex-direction: column; gap: var(--space-6); margin-top: var(--space-8); }
.contact-item { display: flex; gap: var(--space-4); align-items: flex-start; }
.contact-item__icon { width: 1.5rem; height: 1.5rem; color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }
.contact-item__label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); }
.contact-item__value { font-size: var(--text-base); margin-top: var(--space-1); }
.contact-item__value a { color: var(--color-text); text-decoration: none; border-bottom: 1px solid var(--color-border); }
.contact-item__value a:hover { color: var(--color-primary); border-color: var(--color-primary); }

.form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}
.field { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-5); }
.field label { font-size: var(--text-sm); font-weight: 600; }
.field input, .field textarea {
  font-family: var(--font-body);
  font-size: var(--text-base);
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  width: 100%;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.field textarea { min-height: 7rem; resize: vertical; }
.form__note { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-3); }
.form__status { margin-top: var(--space-4); padding: var(--space-4); border-radius: var(--radius-md); font-size: var(--text-sm); display: none; }
.form__status.success { display: block; background: var(--color-primary-highlight); color: var(--color-primary-active); border: 1px solid var(--color-primary); }
.form .btn--primary { width: 100%; justify-content: center; padding: 0.9rem 1.25rem; }

/* ---------- Consent checkbox ---------- */
.field--consent { margin-bottom: var(--space-5); }
.consent { display: flex; align-items: flex-start; gap: 0.6rem; cursor: pointer; font-size: var(--text-sm); line-height: 1.5; color: var(--color-text-muted); }
.consent input[type="checkbox"] { flex: 0 0 auto; width: 1.15rem; height: 1.15rem; margin-top: 0.2rem; accent-color: var(--color-primary); cursor: pointer; }
.consent__text a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.consent input:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: 2px; }

/* ---------- Honeypot (hidden from humans) ---------- */
.hpot { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; opacity: 0; pointer-events: none; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--color-primary);
  color: #fffefb;
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 5vw, var(--space-16));
  text-align: center;
}
.cta-band .eyebrow { color: color-mix(in oklab, #fff 80%, transparent); }
.cta-band .eyebrow::before { background: #fff; opacity: 0.4; }
.cta-band__title { font-size: var(--text-xl); font-weight: 700; margin-top: var(--space-4); color: #fff; }
.cta-band__text { color: color-mix(in oklab, #fff 85%, transparent); margin-top: var(--space-4); margin-inline: auto; }
.cta-band__actions { margin-top: var(--space-8); display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }
.cta-band .btn--primary { background: #fff; color: var(--color-primary); }
.cta-band .btn--primary:hover { background: var(--color-accent-highlight); color: var(--color-primary); }
.cta-band .btn--ghost { color: #fff; border-color: color-mix(in oklab, #fff 40%, transparent); }
.cta-band .btn--ghost:hover { border-color: #fff; background: color-mix(in oklab, #fff 12%, transparent); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-ink);
  padding-block: var(--space-16) var(--space-12);
  background: var(--color-ink);
  color: var(--color-on-dark);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}
@media (min-width: 720px) { .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer__about { color: var(--color-on-dark-muted); font-size: var(--text-sm); max-width: 42ch; }
.footer__about .brand__name { color: #fff; }
.footer__col h4 { font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-3); color: #fff; }
.footer__col a { display: block; font-size: var(--text-sm); color: var(--color-on-dark-muted); text-decoration: none; padding: 0.2rem 0; }
.footer__col a:hover { color: var(--color-primary); }
.footer__bottom {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.14);
  display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: space-between;
  font-size: var(--text-xs); color: rgba(255,255,255,0.55);
}