/* 01-tokens.css */
/* ==========================================================================
   CEMOS Global — design tokens
   Colour, type, spacing and motion values derived from the brand kit.
   Raw hex values belong here and nowhere else.
   ========================================================================== */

@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url("fonts/manrope-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url("fonts/manrope-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* --- Brand core (brand kit) ------------------------------------------- */
  --color-midnight: #203a5f;
  --color-cyan: #1686a3;
  --color-white: #ffffff;
  --color-mist: #e7edf1;

  /* --- Derived neutrals -------------------------------------------------- */
  --color-midnight-deep: #16283f; /* deep surface, footer */
  --color-ink: var(--color-midnight); /* headings */
  --color-ink-body: #47586f; /* body copy on light — 7.1:1 on white */
  --color-ink-muted: #64758c; /* captions — 4.7:1 on white */
  --color-cyan-ink: #12718a; /* cyan text on light — 5.6:1 on white */
  --color-cyan-on-dark: #4fb6ce; /* cyan text on midnight — 4.8:1 */
  --color-line: #d8e2e9;
  --color-line-strong: #c2d1dc;
  --color-surface-soft: #f4f8fa;

  /* --- On dark surfaces --------------------------------------------------- */
  --color-on-dark: var(--color-white);
  --color-on-dark-body: rgba(231, 237, 241, 0.78);
  --color-on-dark-muted: rgba(231, 237, 241, 0.6);
  --color-line-dark: rgba(231, 237, 241, 0.18);
  --color-line-dark-strong: rgba(231, 237, 241, 0.32);

  /* --- Feedback ----------------------------------------------------------- */
  --color-danger: #a4262c;
  --color-danger-soft: #fbf1f1;

  /* --- Contextual roles (flipped by .section--midnight) ------------------- */
  --fg-heading: var(--color-ink);
  --fg-body: var(--color-ink-body);
  --fg-muted: var(--color-ink-muted);
  --fg-accent: var(--color-cyan-ink);
  --hairline: var(--color-line);
  --hairline-strong: var(--color-line-strong);
  --focus-ring: var(--color-cyan-ink);

  /* --- Type --------------------------------------------------------------- */
  --font-sans: "Manrope", ui-sans-serif, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 1rem;
  --text-md: 1.0625rem;
  --text-lg: clamp(1.0625rem, 0.98rem + 0.4vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --display-sm: clamp(1.375rem, 1.2rem + 0.9vw, 1.875rem);
  --display-md: clamp(1.75rem, 1.4rem + 1.75vw, 2.625rem);
  --display-lg: clamp(2.25rem, 1.6rem + 2.9vw, 3.75rem);

  --leading-tight: 1.06;
  --leading-snug: 1.2;
  --leading-normal: 1.65;
  --tracking-tight: -0.022em;
  --tracking-tighter: -0.032em;
  --tracking-wide: 0.16em;

  /* --- Space -------------------------------------------------------------- */
  --space-2xs: 0.375rem;
  --space-xs: 0.625rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.25rem;
  --space-xl: 3.5rem;
  --space-2xl: clamp(2.75rem, 4.5vw, 4rem);
  --space-section: clamp(3.75rem, 6.2vw, 6rem);

  --gutter: clamp(1.25rem, 4.5vw, 3.5rem);
  --measure: 62ch;
  --container: 1240px;
  --header-height: 4.5rem;

  /* --- Shape -------------------------------------------------------------- */
  --radius-sm: 2px;
  --radius-md: 3px;

  /* --- Motion (strong curves, short durations) ---------------------------- */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --duration-press: 140ms;
  --duration-fast: 180ms;
  --duration-ui: 240ms;
  --duration-reveal: 420ms;
  --duration-draw: 700ms;
}

@media (min-width: 60rem) {
  :root {
    --header-height: 5rem;
  }
}

/* 02-base.css */
/* ==========================================================================
   Base — reset, document rhythm, typography defaults
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
  margin: 0;
  background-color: var(--color-white);
  color: var(--fg-body);
  font-family: var(--font-sans);
  font-size: var(--text-md);
  font-weight: 400;
  line-height: var(--leading-normal);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--fg-heading);
  font-weight: 600;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}

h1 {
  font-size: var(--display-lg);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tighter);
}

h2 {
  font-size: var(--display-md);
  font-weight: 500;
  letter-spacing: var(--tracking-tighter);
}

h3 {
  font-size: var(--display-sm);
}

h4 {
  font-size: var(--text-lg);
}

p {
  margin: 0;
  text-wrap: pretty;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

img {
  height: auto;
}

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, currentColor 35%, transparent);
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-color: currentColor;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection {
  background-color: color-mix(in srgb, var(--color-cyan) 22%, transparent);
  color: var(--color-midnight);
}

/* Utility type ------------------------------------------------------------ */

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0;
  color: var(--fg-accent);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  flex: none;
  background-color: currentColor;
}

.lead {
  max-width: var(--measure);
  color: var(--fg-body);
  font-size: var(--text-lg);
  line-height: 1.6;
}

.prose > * + * {
  margin-top: 1.1em;
}

.prose {
  max-width: var(--measure);
}

.index-number {
  display: block;
  color: var(--fg-accent);
  font-size: var(--text-sm);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.75rem 1.125rem;
  background-color: var(--color-midnight);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
  outline-color: var(--color-cyan);
}

/* 03-layout.css */
/* ==========================================================================
   Layout — container, grid, sections, header, footer
   ========================================================================== */

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

.section {
  position: relative;
  padding-block: var(--space-section);
}

.section--mist {
  background-color: var(--color-mist);
}

.section--soft {
  background-color: var(--color-surface-soft);
}

.section--midnight {
  background-color: var(--color-midnight);
  --fg-heading: var(--color-on-dark);
  --fg-body: var(--color-on-dark-body);
  --fg-muted: var(--color-on-dark-muted);
  --fg-accent: var(--color-cyan-on-dark);
  --hairline: var(--color-line-dark);
  --hairline-strong: var(--color-line-dark-strong);
  --focus-ring: var(--color-cyan);
  color: var(--fg-body);
}

/* Section header: eyebrow + heading + optional lead --------------------- */

.section-head {
  display: grid;
  gap: var(--space-md);
  align-items: end;
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: var(--space-xl);
}

.section-head__title {
  max-width: 22ch;
}

.section-head__body {
  max-width: 46ch;
  color: var(--fg-body);
}

.section-head > * {
  min-width: 0;
}

.section-head__group {
  display: grid;
  gap: var(--space-sm);
}

@media (min-width: 60rem) {
  .section-head--split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: var(--space-xl);
  }
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-white);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-ui) ease;
}

.site-header[data-scrolled="true"] {
  border-bottom-color: var(--color-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: var(--header-height);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  flex: none;
  padding-block: 0.75rem;
  text-decoration: none;
}

.site-header__logo {
  width: 180px;
  height: auto;
  flex: none;
}

@media (min-width: 48rem) {
  .site-header__logo {
    width: 194px;
  }
}

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.2vw, 2.25rem);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding-block: 0.35rem;
  color: var(--color-ink-body);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -0.25rem;
  height: 1px;
  background-color: var(--color-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-fast) var(--ease-out);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-ink);
}

.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

@media (hover: hover) and (pointer: fine) {
  .site-nav__link:hover {
    color: var(--color-ink);
  }

  .site-nav__link:hover::after {
    transform: scaleX(1);
  }
}

/* Without JavaScript the mobile panel cannot open, so the inline navigation
   is shown at every width instead. */
html:not(.js) .site-nav {
  display: block;
}

html:not(.js) .site-nav__list {
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

html:not(.js) .nav-toggle,
html:not(.js) .mobile-nav {
  display: none;
}

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

.site-header__cta {
  display: none;
}

@media (min-width: 62rem) {
  .site-nav,
  .site-header__cta {
    display: block;
  }
}

/* Mobile navigation ------------------------------------------------------- */

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem 0.625rem 0.75rem;
  background-color: transparent;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color var(--duration-fast) ease,
    transform var(--duration-press) var(--ease-out);
}

.nav-toggle:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .nav-toggle:hover {
    border-color: var(--color-midnight);
  }
}

@media (min-width: 62rem) {
  .nav-toggle {
    display: none;
  }
}

/* Below ~370px the label is hidden visually but kept for assistive tech. */
@media (max-width: 23.125rem) {
  .nav-toggle__label {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

.nav-toggle__bars {
  position: relative;
  width: 1rem;
  height: 0.625rem;
  flex: none;
}

.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background-color: currentColor;
  transition: transform var(--duration-ui) var(--ease-out),
    opacity var(--duration-fast) ease;
}

.nav-toggle__bars span:nth-child(1) {
  top: 0;
}
.nav-toggle__bars span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}
.nav-toggle__bars span:nth-child(3) {
  bottom: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(4.3px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-4.3px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 45;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-xl) var(--gutter) var(--space-2xl);
  background-color: var(--color-white);
  overflow-y: auto;
  opacity: 0;
  transform: translateY(-0.75rem);
  visibility: hidden;
  transition: opacity var(--duration-ui) var(--ease-out),
    transform var(--duration-ui) var(--ease-out),
    visibility 0s linear var(--duration-ui);
}

.mobile-nav[data-open="true"] {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  transition-delay: 0s;
}

@media (min-width: 62rem) {
  .mobile-nav {
    display: none;
  }
}

.mobile-nav__list {
  display: grid;
  border-top: 1px solid var(--color-line);
}

.mobile-nav__link {
  display: flex;
  align-items: baseline;
  gap: 0.875rem;
  padding-block: 1.05rem;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
}

.mobile-nav__link span {
  color: var(--color-cyan-ink);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
}

.mobile-nav__footer {
  display: grid;
  gap: var(--space-sm);
}

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

.site-footer {
  padding-block: var(--space-2xl) var(--space-lg);
  background-color: var(--color-midnight);
  --fg-heading: var(--color-on-dark);
  --fg-body: var(--color-on-dark-body);
  --fg-muted: var(--color-on-dark-muted);
  --fg-accent: var(--color-cyan-on-dark);
  --focus-ring: var(--color-cyan);
  color: var(--color-on-dark-body);
}

.site-footer__top {
  display: grid;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-line-dark);
}

@media (min-width: 52rem) {
  .site-footer__top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: var(--space-2xl);
  }
}

.site-footer__brand {
  display: grid;
  gap: var(--space-md);
  align-content: start;
}

.site-footer__logo {
  width: 200px;
  height: auto;
}

.site-footer__tagline {
  max-width: 34ch;
  color: var(--color-on-dark-body);
  font-size: var(--text-base);
}

.site-footer__columns {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
}

.site-footer__heading {
  margin-bottom: var(--space-sm);
  color: var(--color-on-dark);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.site-footer__list {
  display: grid;
  gap: 0.625rem;
  font-size: 0.9375rem;
}

.site-footer__list a {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  color: var(--color-on-dark-body);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

@media (hover: hover) and (pointer: fine) {
  .site-footer__list a:hover {
    color: var(--color-white);
  }
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  color: var(--color-on-dark-muted);
  font-size: var(--text-sm);
}

/* 04-components.css */
/* ==========================================================================
   Components — buttons, links, cards, lists, form
   ========================================================================== */

/* Buttons ----------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--duration-fast) ease,
    border-color var(--duration-fast) ease, color var(--duration-fast) ease,
    transform var(--duration-press) var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

.btn__icon {
  width: 0.75rem;
  height: 0.75rem;
  flex: none;
  transition: transform var(--duration-fast) var(--ease-out);
}

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

.btn--secondary {
  background-color: transparent;
  border-color: var(--color-line-strong);
  color: var(--color-ink);
}

.btn--onDark {
  background-color: var(--color-white);
  color: var(--color-midnight);
}

.btn--sm {
  padding: 0.6rem 1.05rem;
  font-size: 0.875rem;
}

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

.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
}

@media (hover: hover) and (pointer: fine) {
  .btn--primary:hover {
    background-color: #1a3050;
  }

  .btn--secondary:hover {
    border-color: var(--color-midnight);
  }

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

  .btn:hover .btn__icon {
    transform: translateX(3px);
  }
}

/* Arrow link -------------------------------------------------------------- */

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--fg-accent);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.arrow-link svg {
  width: 0.8125rem;
  height: 0.8125rem;
  transition: transform var(--duration-fast) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .arrow-link:hover svg {
    transform: translateX(4px);
  }
}

/* Cards ------------------------------------------------------------------- */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background-color: var(--color-white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-ui) ease;
}

.card::before {
  content: "";
  position: absolute;
  inset-inline: -1px;
  top: -1px;
  height: 2px;
  background-color: var(--color-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-ui) var(--ease-out);
}

.card:hover::before,
.card:focus-within::before {
  transform: scaleX(1);
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    border-color: var(--color-line-strong);
  }
}

/* Definition list --------------------------------------------------------- */

.facts {
  display: grid;
  border-top: 1px solid var(--hairline);
}

.facts__row {
  display: grid;
  gap: 0.25rem 1.5rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--hairline);
}

@media (min-width: 30rem) {
  .facts__row {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1fr);
    align-items: baseline;
  }
}

.facts__label {
  color: var(--fg-muted);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

.facts__value {
  margin: 0;
  color: var(--fg-heading);
  font-weight: 500;
}

/* Checklist --------------------------------------------------------------- */

.checklist {
  display: grid;
  gap: 0.875rem;
}

.checklist li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--fg-body);
}

.checklist li::before {
  content: "";
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 0.625rem;
  height: 1px;
  background-color: var(--color-cyan);
}

/* Divided list ------------------------------------------------------------ */

.divided {
  display: grid;
  border-top: 1px solid var(--hairline);
}

.divided > li {
  padding-block: 1.05rem;
  border-bottom: 1px solid var(--hairline);
}

/* Form -------------------------------------------------------------------- */

.form {
  display: grid;
  gap: var(--space-md);
}

.form__grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 40rem) {
  .form__grid--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field__label {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--color-ink);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.field__optional {
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.field__control {
  width: 100%;
  padding: 0.8rem 0.9rem;
  background-color: var(--color-white);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: 1rem;
  transition: border-color var(--duration-fast) ease,
    box-shadow var(--duration-fast) ease;
}

.field__control::placeholder {
  color: var(--color-ink-muted);
}

.field__control:hover {
  border-color: #a9bccb;
}

.field__control:focus {
  outline: none;
  border-color: var(--color-cyan);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-cyan) 18%, transparent);
}

.field__control:focus-visible {
  outline: none;
}

textarea.field__control {
  min-height: 8.5rem;
  resize: vertical;
}

select.field__control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8' fill='none' stroke='%2364758c' stroke-width='1.5'%3E%3Cpath d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 0.7rem;
  padding-right: 2.4rem;
}

.field__error {
  display: none;
  color: var(--color-danger);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.field[data-invalid="true"] .field__control {
  border-color: var(--color-danger);
  background-color: var(--color-danger-soft);
}

.field[data-invalid="true"] .field__error {
  display: block;
}

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

.form__note {
  max-width: 34ch;
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}

.form__status {
  display: none;
  padding: 0.9rem 1.05rem;
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--color-cyan);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-soft);
  color: var(--color-ink);
  font-size: 0.9375rem;
}

.form__status[data-state="success"],
.form__status[data-state="error"],
.form__status[data-state="notice"] {
  display: block;
}

.form__status[data-state="error"] {
  border-left-color: var(--color-danger);
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

/* 05-sections.css */
/* ==========================================================================
   Sections — hero, positioning, services, working model, principles,
   about, contact, service detail, error page
   ========================================================================== */

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

.hero {
  position: relative;
  padding-top: clamp(2.5rem, 4.5vw, 4rem);
  padding-bottom: 0;
  overflow: clip;
}

.hero__inner {
  position: relative;
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  align-items: center;
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

@media (min-width: 62rem) {
  .hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }
}

.hero__grid-lines {
  display: none;
}

@media (min-width: 62rem) {
  .hero__grid-lines {
    position: absolute;
    inset: -2rem 0 0;
    display: block;
    background-image: repeating-linear-gradient(
      to right,
      var(--color-line) 0 1px,
      transparent 1px 25%
    );
    opacity: 0.5;
    pointer-events: none;
  }
}

.hero__content {
  position: relative;
  display: grid;
  gap: clamp(1.25rem, 2.4vw, 1.75rem);
  justify-items: start;
}

.hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-cyan-ink);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.hero__eyebrow li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero__eyebrow li + li::before {
  content: "";
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background-color: currentColor;
}

.hero__title {
  max-width: 17ch;
}

.hero__body {
  max-width: 48ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.hero__figure {
  position: relative;
  margin-inline: calc(var(--gutter) * -0.5);
}

@media (min-width: 62rem) {
  .hero__figure {
    margin-inline: 0;
  }
}

.hero__baseline {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-block: 1.1rem;
  border-top: 1px solid var(--color-line);
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}

.hero__baseline-marker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-cyan-ink);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: var(--text-xs);
  font-weight: 600;
}

/* Positioning ------------------------------------------------------------- */

.positioning__body {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 62rem) {
  .positioning__body {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(3rem, 6vw, 5rem);
    align-items: start;
  }
}

.pillars {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.pillar {
  display: grid;
  gap: 0.35rem;
  padding-block: 1.35rem;
  border-bottom: 1px solid var(--color-line);
  grid-template-columns: 3rem minmax(0, 1fr);
  align-items: baseline;
}

.pillar__title {
  color: var(--color-ink);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.pillar__body {
  grid-column: 2;
  color: var(--fg-body);
  font-size: 0.9375rem;
}

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

.services__grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 62rem) {
  .services__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
  }
}

.service-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.service-card__title {
  max-width: 14ch;
}

.service-card__summary {
  margin-top: 0.75rem;
  max-width: 44ch;
  color: var(--fg-body);
}

.service-card__topics {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.service-card__topic-title {
  display: block;
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.service-card__topic-body {
  margin-top: 0.2rem;
  color: var(--fg-body);
  font-size: 0.9375rem;
}

.service-card__footer {
  margin-top: auto;
}

/* Working model ----------------------------------------------------------- */

.model {
  position: relative;
}

.model__steps {
  position: relative;
}

.model__list {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 52rem) {
  .model__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-md);
  }
}

.model__rail {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-draw) var(--ease-out);
}

.model__steps.is-visible .model__rail {
  transform: scaleX(1);
}

@media (max-width: 51.99rem) {
  .model__rail {
    display: none;
  }
}

.model__step {
  position: relative;
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding-top: var(--space-md);
  padding-right: var(--space-sm);
  border-top: 1px solid var(--color-line-dark);
}

/* On wide screens the continuous cyan rail replaces the per-step hairline. */
@media (min-width: 52rem) {
  .model__step {
    border-top-color: transparent;
  }
}

.model__step::before {
  content: "";
  position: absolute;
  top: -2.5px;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--color-cyan);
}

.model__step-title {
  color: var(--color-on-dark);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
}

.model__step-body {
  color: var(--color-on-dark-body);
}

.model__step-detail {
  color: var(--color-on-dark-muted);
  font-size: 0.9375rem;
}

/* Principles -------------------------------------------------------------- */

.principles__grid {
  display: grid;
  gap: var(--space-lg);
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-lg);
}

@media (min-width: 52rem) {
  .principles__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .principle {
    padding-inline: clamp(1.5rem, 3vw, 2.75rem);
    border-left: 1px solid var(--color-line);
  }

  .principle:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .principle:last-child {
    padding-right: 0;
  }
}

.principle {
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.principle__title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

/* About ------------------------------------------------------------------- */

.about__grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 62rem) {
  .about__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(3rem, 6vw, 5rem);
    align-items: start;
  }
}

.about__seal {
  width: 2.75rem;
  height: auto;
  margin-bottom: var(--space-md);
  opacity: 0.9;
}

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

.contact__grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 62rem) {
  .contact__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(3rem, 5vw, 4.5rem);
    align-items: start;
  }
}

.contact__aside {
  display: grid;
  gap: var(--space-lg);
  align-content: start;
}

.contact__steps {
  display: grid;
  gap: 0;
  counter-reset: contact-step;
  border-top: 1px solid var(--color-line);
}

.contact__steps li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.75rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--color-line);
  color: var(--fg-body);
  font-size: 0.9375rem;
  counter-increment: contact-step;
}

.contact__steps li::before {
  content: counter(contact-step, decimal-leading-zero);
  color: var(--color-cyan-ink);
  font-size: var(--text-xs);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
  line-height: 1.9;
}

.contact__details {
  display: grid;
  gap: 0.5rem;
  font-size: 0.9375rem;
}

.contact__details a {
  color: var(--color-ink);
  font-weight: 500;
}

.contact__panel {
  padding: clamp(1.5rem, 3.2vw, 2.5rem);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.contact__panel-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-line);
}

.contact__panel-rule {
  width: 1.75rem;
  height: 1px;
  flex: none;
  background-color: var(--color-cyan);
}

.contact__panel-title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

/* Page header (service & error pages) ------------------------------------- */

.page-header {
  padding-top: clamp(2.5rem, 5vw, 4rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--color-line);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}

.breadcrumb a {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  color: var(--color-ink-muted);
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .breadcrumb a:hover {
    color: var(--color-ink);
  }
}

.breadcrumb__sep {
  color: var(--color-line-strong);
}

.page-header__grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 62rem) {
  .page-header__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: end;
  }
}

.page-header__title {
  max-width: 16ch;
  margin-top: var(--space-md);
}

.page-header__aside {
  display: grid;
  gap: var(--space-md);
  justify-items: start;
}

/* Service detail ---------------------------------------------------------- */

.topics__grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 52rem) {
  .topics__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
  }
}

.topic {
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding-top: var(--space-md);
  border-top: 1px solid var(--hairline);
}

.topic__title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.split {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 52rem) {
  .split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(2.5rem, 5vw, 4rem);
  }
}

.split__title {
  margin-bottom: var(--space-md);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.method__steps {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 52rem) {
  .method__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.method__step {
  display: grid;
  gap: 0.4rem;
  align-content: start;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--hairline);
}

.method__step-title {
  color: var(--fg-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.next-service {
  display: grid;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--hairline);
}

@media (min-width: 52rem) {
  .next-service {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--space-xl);
  }
}

/* CTA band ---------------------------------------------------------------- */

.cta-band__inner {
  display: grid;
  gap: var(--space-lg);
  align-items: end;
}

@media (min-width: 52rem) {
  .cta-band__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2xl);
  }
}

.cta-band__title {
  max-width: 18ch;
}

.cta-band__body {
  max-width: 46ch;
  margin-top: var(--space-sm);
}

/* Error page -------------------------------------------------------------- */

.error-page {
  display: grid;
  gap: var(--space-lg);
  align-content: center;
  min-height: min(70vh, 40rem);
  padding-block: var(--space-2xl);
  justify-items: start;
}

.error-page__code {
  color: var(--color-cyan-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.2em;
}

.error-page__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* 06-motion.css */
/* ==========================================================================
   Motion — scroll reveals, hero figure, reduced-motion fallbacks
   Only opacity and transform animate. Every hidden-by-default state is
   scoped to .js so the site stays fully readable without JavaScript.
   ========================================================================== */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--duration-reveal) var(--ease-out),
    transform var(--duration-reveal) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

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

.globe {
  position: relative;
  width: 100%;
  perspective: 900px;
}

.globe__tilt {
  transform: translate3d(0, 0, 0);
}

.globe__svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.globe__sphere {
  fill: none;
  stroke: var(--color-midnight);
  stroke-width: 1.25;
  opacity: 0.24;
  --line-opacity: 0.24;
}

.globe__meridian {
  fill: none;
  stroke: var(--color-midnight);
  stroke-width: 1.25;
  opacity: 0.18;
  --line-opacity: 0.18;
}

.globe__latitude {
  fill: none;
  stroke: var(--color-midnight);
  stroke-width: 1;
  opacity: 0.12;
}

.globe__equator {
  fill: var(--color-cyan);
  transform-box: fill-box;
  transform-origin: left center;
}

.globe__marker {
  fill: var(--color-cyan);
}

.globe__tick {
  stroke: var(--color-line-strong);
  stroke-width: 1;
}

.js .globe__equator {
  transform: scaleX(0);
  animation: draw-equator var(--duration-draw) var(--ease-out) 240ms forwards;
}

.js .globe__meridian,
.js .globe__latitude,
.js .globe__sphere {
  opacity: 0;
  animation: fade-in-line 520ms var(--ease-out) forwards;
}

.js .globe__sphere {
  animation-delay: 60ms;
}
.js .globe__meridian:nth-of-type(1) {
  animation-delay: 120ms;
}
.js .globe__meridian:nth-of-type(2) {
  animation-delay: 180ms;
}
.js .globe__meridian:nth-of-type(3) {
  animation-delay: 240ms;
}
.js .globe__meridian:nth-of-type(4) {
  animation-delay: 300ms;
}
.js .globe__latitude {
  animation-delay: 340ms;
}

.js .globe__marker,
.js .globe__tick {
  opacity: 0;
  animation: fade-in 400ms var(--ease-out) 820ms forwards;
}

@keyframes draw-equator {
  to {
    transform: scaleX(1);
  }
}

@keyframes fade-in-line {
  to {
    opacity: var(--line-opacity, 0.16);
  }
}

@keyframes fade-in {
  to {
    opacity: 1;
  }
}

.globe__latitude {
  --line-opacity: 0.12;
}

/* Reduced motion ----------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js [data-reveal] {
    opacity: 0;
    transform: none;
  }

  .js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
    transition: opacity 200ms ease;
    transition-delay: 0ms;
  }

  .js .globe__equator {
    transform: none;
    animation: fade-in 240ms ease forwards;
  }

  .js .globe__meridian,
  .js .globe__latitude,
  .js .globe__sphere,
  .js .globe__marker,
  .js .globe__tick {
    animation-duration: 240ms;
    animation-delay: 0ms;
  }

  .model__steps .model__rail {
    transition: none;
    transform: scaleX(1);
  }

  .btn:active,
  .nav-toggle:active {
    transform: none;
  }

  .mobile-nav {
    transform: none;
    transition: opacity 160ms ease, visibility 0s linear 160ms;
  }

  .mobile-nav[data-open="true"] {
    transform: none;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}

/* Print -------------------------------------------------------------------- */

@media print {
  /* Scroll reveals never run in a print context — show everything. */
  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .site-header,
  .mobile-nav,
  .hero__figure,
  .cta-band,
  .contact__panel {
    display: none;
  }

  body {
    color: #000;
  }
}