/* ============================================================
   Coral Computing — design tokens & components
   Palette derived from subject: deep navy ink + warm coral accent
   ============================================================ */

:root {
  /* Type scale */
  --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, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --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;

  /* Surfaces */
  --color-bg: #faf8f4;
  --color-surface: #ffffff;
  --color-surface-offset: #f1ede5;
  --color-ink: #0c1c29;          /* deep navy — hero & dark band */
  --color-ink-2: #12242f;
  --color-text: #16232e;
  --color-text-muted: #5b6875;
  --color-text-faint: #9aa4ad;

  /* Accent — coral */
  --color-primary: #c8432b;       /* white text passes AA */
  --color-primary-hover: #a83721;
  --color-primary-active: #8c2d1a;
  --color-coral-soft: #e98a63;     /* decorative on dark only */
  --color-success: #3e7a2e;

  /* Borders / shadows */
  --color-divider: oklch(0.75 0.02 250 / 0.35);
  --color-border: oklch(0.35 0.03 250 / 0.18);
  --shadow-sm: 0 1px 2px oklch(0.2 0.03 250 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.2 0.03 250 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.03 250 / 0.12);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Avenir Next', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;

  /* Content widths */
  --content-default: 1080px;
  --content-wide: 1200px;
}

/* ---------------- Container & primitives ---------------- */

.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  min-height: 44px;
  line-height: 1.4;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

.btn--primary:active {
  background: var(--color-primary-active);
}

.btn--ghost {
  color: #fff;
  border: 1px solid oklch(1 0 0 / 0.45);
}

.btn--ghost:hover {
  border-color: #fff;
  color: #fff;
}

.btn--sm {
  padding: var(--space-2) var(--space-5);
}

.kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.kicker--light {
  color: var(--color-coral-soft);
}

/* ---------------- Header ---------------- */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-ink);
  color: #fff;
  transition:
    background var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.wordmark__logo {
  height: 3.95em;
  width: auto;
  flex: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-nav ul {
  display: flex;
  gap: var(--space-8);
}

.site-nav a:not(.btn) {
  color: oklch(1 0 0 / 0.85);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-nav a:not(.btn):hover {
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-3);
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-sm);
}

.nav-toggle__bar {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: var(--radius-full);
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------- Hero ---------------- */

.hero {
  background:
    radial-gradient(120% 90% at 85% 0%, #17303f 0%, var(--color-ink) 55%);
  color: #fff;
  padding-block: clamp(var(--space-16), 9vw, var(--space-24)) clamp(var(--space-16), 8vw, var(--space-20));
}

.hero__grid {
  display: grid;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: center;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  max-width: 15ch;
}

.hero__lede {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: oklch(0.92 0.01 250);
  max-width: 52ch;
  margin-bottom: var(--space-8);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero__lede a {
  color: var(--color-coral-soft);
}


.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-10);
}

.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-coral-soft);
}

.stat__label {
  font-size: var(--text-xs);
  color: oklch(0.75 0.01 250);
  margin-bottom: var(--space-1);
}

.hero__figure {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__figure::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid oklch(1 0 0 / 0.12);
  pointer-events: none;
}

/* ---------------- Sections ---------------- */

.section {
  padding-block: clamp(var(--space-16), 7vw, var(--space-24));
}

.section__head {
  max-width: 60ch;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.section__lede {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ---------------- Services ---------------- */

.services {
  background: var(--color-bg);
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.service {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.service:hover {
  box-shadow: var(--shadow-md);
}

.service--wide {
  grid-column: 1 / -1;
}

.service__num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  padding-top: var(--space-1);
}

.service__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.service__desc {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ---------------- Approach ---------------- */

.approach {
  background: var(--color-surface-offset);
}

.approach__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: center;
}

.approach__figure {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.steps {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-5);
  align-items: start;
}

.step__num {
  grid-row: span 2;
}

.step__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  color: var(--color-primary);
  border: 1.5px solid oklch(from var(--color-primary) l c h / 0.4);
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
}

.step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.step__desc {
  color: var(--color-text-muted);
}

/* ---------------- Security band ---------------- */

.band {
  position: relative;
  background: var(--color-ink);
  color: #fff;
  overflow: hidden;
}

.band__bg {
  position: absolute;
  inset: 0;
}

.band__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.band__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--color-ink) 0%, oklch(0.14 0.03 250 / 0.6) 60%, oklch(0.14 0.03 250 / 0.35) 100%);
}

.band__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: center;
  padding-block: clamp(var(--space-16), 7vw, var(--space-24));
}

.checklist {
  display: grid;
  gap: var(--space-4);
}

.checklist li {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  color: oklch(0.88 0.01 250);
  font-size: var(--text-base);
}

.checklist li::before {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-coral-soft);
  flex: none;
  transform: translateY(-2px);
}

.band__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.band__desc {
  color: oklch(0.85 0.01 250);
  max-width: 55ch;
}

/* ---------------- Social proof ---------------- */

.proof {
  background: var(--color-bg);
}

.proof__badges {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  max-width: 720px;
}

.badge {
  display: grid;
  gap: var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive);
}

.badge:hover {
  box-shadow: var(--shadow-md);
}

.badge__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}

.badge__sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------------- Contact ---------------- */

.contact {
  background: var(--color-surface-offset);
}

.contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: center;
}

.contact__desc {
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.contact__card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 4vw, var(--space-12));
  box-shadow: var(--shadow-md);
}

.contact__email {
  display: grid;
  gap: var(--space-2);
  text-decoration: none;
  padding: var(--space-2);
  margin-bottom: var(--space-6);
}

.contact__email-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.contact__email-address {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  word-break: break-all;
}

.contact__email:hover .contact__email-address {
  color: var(--color-primary-hover);
}

.captcha__head {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.captcha__icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-primary);
  flex: none;
  margin-top: 0.15rem;
}

.captcha__icon--ok {
  color: var(--color-success);
}

.captcha__hint {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-top: var(--space-1);
}

.contact__form {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.field__input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  min-height: 44px;
  font: inherit;
  color: inherit;
}

.field__input--area {
  resize: vertical;
  min-height: 6.5rem;
}

.field__input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 2px oklch(from var(--color-primary) l c h / 0.2);
}

.field__error {
  font-size: var(--text-xs);
  color: var(--color-primary);
  min-height: 1.2em;
}

.contact__form-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.captcha-tile-wrap {
  display: grid;
  gap: var(--space-3);
}

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

.captcha-instruction {
  font-size: var(--text-base);
  font-weight: 700;
}

.captcha-refresh {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex: none;
}

.captcha-refresh svg {
  width: 1rem;
  height: 1rem;
}

.captcha-refresh:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.captcha-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.captcha-tile {
  aspect-ratio: 1 / 1;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-offset);
  display: grid;
  place-items: center;
  cursor: pointer;
  padding: var(--space-3);
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}

.captcha-tile svg {
  width: 100%;
  height: 100%;
  display: block;
}

.captcha-tile:hover {
  border-color: var(--color-text-muted);
}

.captcha-tile:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.captcha-tile.is-selected {
  border-color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.08);
  transform: scale(0.96);
}

.captcha__feedback {
  font-size: var(--text-sm);
  color: var(--color-primary);
  min-height: 1.4em;
}

.captcha__feedback.is-success {
  color: var(--color-success);
}

.contact__note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------------- Footer ---------------- */

.footer {
  background: var(--color-ink);
  color: oklch(0.8 0.01 250);
  padding-block: var(--space-12);
}

.footer__inner {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 721px) {
  .footer__inner {
    grid-template-columns: 1fr auto;
  }

  .footer__note {
    grid-column: 1 / -1;
  }
}

.footer__tagline {
  font-size: var(--text-sm);
  margin-top: var(--space-3);
}

.footer__nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer__nav a {
  color: oklch(0.8 0.01 250);
  text-decoration: none;
  font-size: var(--text-sm);
}

.footer__nav a:hover {
  color: #fff;
}

.footer__note {
  font-size: var(--text-xs);
  max-width: none;
  border-top: 1px solid oklch(1 0 0 / 0.12);
  padding-top: var(--space-6);
}

.footer__note a {
  color: var(--color-coral-soft);
}

/* ---------------- Responsive ---------------- */

@media (max-width: 900px) {
  .approach__grid,
  .band__inner,
  .contact__inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--color-ink-2);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    padding: calc(4.5rem + var(--space-6)) var(--space-6) var(--space-10);
    overflow-y: auto;
    display: none;
  }

  .site-nav--open {
    display: flex;
  }

  .site-nav ul {
    flex-direction: column;
    gap: var(--space-4);
  }

  .site-nav a:not(.btn) {
    font-size: var(--text-lg);
    font-weight: 500;
  }

  .service-list {
    grid-template-columns: 1fr;
  }

  .proof__badges {
    grid-template-columns: 1fr;
  }

  .hero__title {
    max-width: none;
  }
}