/* ==========================================================================
   sk:p — Design System / Foundations
   Palette: Bleu #0055A4 · Lime #DCF4A2 · White #FFFFFF
   ========================================================================== */

/* --- 1. Tokens ----------------------------------------------------------- */
:root {
  /* Brand */
  --skp-blue: #0055a4;
  --skp-lime: #dcf4a2;
  --skp-white: #ffffff;

  /* Blue scale (derived) */
  --blue-950: #001c36;
  --blue-900: #002b52;
  --blue-800: #003d75;
  --blue-700: #00478a;
  --blue-600: #0055a4;
  --blue-500: #1a6dbc;
  --blue-400: #4f92cf;
  --blue-300: #8db9e0;
  --blue-200: #c2d9ee;
  --blue-100: #e0ebf6;
  --blue-50:  #f2f7fb;

  /* Lime scale (derived) */
  --lime-700: #5d7a20;
  --lime-600: #7b9c2e;
  --lime-500: #a5c65a;
  --lime-400: #c6e484;
  --lime-300: #dcf4a2;
  --lime-200: #e9f8c8;
  --lime-100: #f4fce4;

  /* Neutrals */
  --ink:       #0b0d0f;
  --ink-soft:  #3d444c;
  --ink-muted: #6b737c;
  --ink-faint: #9aa1a9;
  --line:      #e2e4e6;
  --line-soft: #eeeff0;
  --paper:     #faf9f7;
  --paper-alt: #f4f3f0;
  --white:     #ffffff;

  /* Semantic */
  --bg: var(--white);
  --fg: var(--ink);
  --accent: var(--skp-blue);
  --accent-fg: var(--white);
  --highlight: var(--skp-lime);
  --success: #1f7a4d;
  --danger:  #b2323d;

  /* Type */
  --font-display: "Anton", "Haettenschweiler", "Arial Narrow", Impact, sans-serif;
  /* The house slant. Applied as oblique rather than a transform so it never
     shifts layout or blurs text on a subpixel boundary. */
  --display-slant: oblique 7deg;
  --font-sans: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --fs-3xs: 0.625rem;   /* 10 */
  --fs-2xs: 0.6875rem;  /* 11 */
  --fs-xs:  0.75rem;    /* 12 */
  --fs-sm:  0.8125rem;  /* 13 */
  --fs-base:0.9375rem;  /* 15 */
  --fs-md:  1.0625rem;  /* 17 */
  --fs-lg:  1.375rem;   /* 22 */
  --fs-xl:  1.75rem;    /* 28 */
  --fs-2xl: clamp(2rem, 4vw, 3.25rem);
  --fs-3xl: clamp(2.75rem, 7vw, 6rem);
  --fs-4xl: clamp(3.5rem, 12vw, 11rem);

  --lh-tight: 1.02;
  --lh-snug: 1.06;
  --lh-normal: 1.55;
  --lh-loose: 1.7;

  --tracking-tightest: -0.045em;
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.06em;
  --tracking-widest: 0.18em;

  /* Space — 4px base */
  --s-1: 0.25rem;  --s-2: 0.5rem;   --s-3: 0.75rem;  --s-4: 1rem;
  --s-5: 1.25rem;  --s-6: 1.5rem;   --s-8: 2rem;     --s-10: 2.5rem;
  --s-12: 3rem;    --s-16: 4rem;    --s-20: 5rem;    --s-24: 6rem;
  --s-32: 8rem;    --s-40: 10rem;

  --section-y: clamp(3.5rem, 8vw, 8rem);
  --gutter: clamp(1rem, 4vw, 3rem);
  --maxw: 1680px;
  --maxw-text: 68ch;

  /* Shape */
  --radius: 0px;
  --radius-sm: 2px;
  --radius-pill: 100px;
  --border: 1px solid var(--line);

  /* Elevation — restrained, minimal brand */
  --shadow-sm: 0 1px 2px rgba(11, 13, 15, 0.05);
  --shadow-md: 0 8px 24px -12px rgba(11, 13, 15, 0.16);
  --shadow-lg: 0 24px 64px -24px rgba(11, 13, 15, 0.26);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 160ms;
  --dur: 320ms;
  --dur-slow: 620ms;

  /* Layers */
  --z-sticky: 40;
  --z-header: 60;
  --z-overlay: 80;
  --z-drawer: 90;
  --z-toast: 100;

  --header-h: 62px;
  --announce-h: 34px;
}

/* --- 2. Reset ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--s-6));
}
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-synthesis-weight: none;
  overflow-x: hidden;
}
body.is-locked { overflow: hidden; }
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
table { border-collapse: collapse; width: 100%; }
h1, h2, h3, h4, h5, h6 { font-weight: 400; line-height: var(--lh-snug); }
::selection { background: var(--skp-lime); color: var(--blue-900); }

@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;
  }
}

/* --- 3. Focus & a11y ----------------------------------------------------- */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--skp-blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
.u-visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; top: 0; left: 50%;
  transform: translate(-50%, -120%);
  z-index: 200;
  background: var(--skp-blue); color: #fff;
  padding: var(--s-3) var(--s-6);
  font-size: var(--fs-xs); letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* --- 4. Typography primitives -------------------------------------------- */
.t-display { font-family: var(--font-display); }

.t-hero    { font-size: var(--fs-4xl); }
.t-h1      { font-size: var(--fs-3xl); }
.t-h2      { font-size: var(--fs-2xl); }
.t-h3      { font-size: var(--fs-xl); letter-spacing: var(--tracking-tight); }
.t-h4      { font-size: var(--fs-lg); }

.t-eyebrow {
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  font-weight: 500;
  color: var(--ink-muted);
}
.t-label {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-weight: 500;
}
.t-mono {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-normal);
  font-variant-numeric: tabular-nums;
}
.t-lead {
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
  color: var(--ink-soft);
  max-width: var(--maxw-text);
}
.t-body p + p { margin-top: 1.1em; }
.t-body a { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.t-muted { color: var(--ink-muted); }
.t-center { text-align: center; }
.t-balance { text-wrap: balance; }

/* --- 5. Layout ----------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: 1120px; }
.wrap--text { max-width: 760px; }
.wrap--flush { padding-inline: 0; }

.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.section--flush-top { padding-top: 0; }
.section--paper { background: var(--paper); }
.section--blue { background: var(--skp-blue); color: #fff; }
.section--lime { background: var(--skp-lime); color: var(--blue-900); }

.grid { display: grid; gap: var(--s-6); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.stack > * + * { margin-top: var(--s-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; }
.between { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); }

.rule { height: 1px; background: var(--line); border: 0; }
.rule--strong { background: var(--ink); }

/* Section heading pattern */
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--s-6); margin-bottom: var(--s-10);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid var(--line);
}
.section-head__title { font-family: var(--font-display); font-size: var(--fs-xl); letter-spacing: var(--tracking-tight); }
.section-head__link { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: var(--tracking-wide); white-space: nowrap; }

/* --- 6. Buttons ---------------------------------------------------------- */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: #fff;
  --btn-bd: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  padding: 0.95rem var(--s-8);
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.btn > * { position: relative; z-index: 1; }
.btn::after {
  content: ""; position: absolute; inset: 0;
  background: var(--skp-lime);
  transform: translateY(101%);
  transition: transform var(--dur) var(--ease);
  z-index: 0;
}
.btn:hover::after { transform: translateY(0); }
.btn:hover { color: var(--blue-900); border-color: var(--skp-lime); }
.btn--primary { --btn-bg: var(--skp-blue); --btn-bd: var(--skp-blue); }
.btn--ghost   { --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--quiet   { --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: var(--line); }
.btn--quiet:hover { border-color: var(--ink); }
.btn--invert  { --btn-bg: #fff; --btn-fg: var(--skp-blue); --btn-bd: #fff; }
.btn--full { width: 100%; }
.btn--sm { padding: 0.6rem var(--s-4); font-size: var(--fs-3xs); }
.btn--lg { padding: 1.15rem var(--s-10); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.4; pointer-events: none; }

.link-underline {
  position: relative;
  padding-bottom: 2px;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size var(--dur) var(--ease);
}
.link-underline:hover { background-size: 0% 1px; background-position: 100% 100%; }

.link-arrow { display: inline-flex; align-items: center; gap: var(--s-2); }
.link-arrow svg { transition: transform var(--dur) var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* --- 7. Forms ------------------------------------------------------------ */
.field { display: block; }
.field__label {
  display: block; margin-bottom: var(--s-2);
  font-size: var(--fs-2xs); text-transform: uppercase;
  letter-spacing: var(--tracking-wide); color: var(--ink-muted);
}
.input, .select, .textarea {
  width: 100%;
  padding: 0.85rem var(--s-4);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.input::placeholder, .textarea::placeholder { color: var(--ink-faint); }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--skp-blue);
  box-shadow: 0 0 0 3px var(--blue-100);
  outline: none;
}
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%230b0d0f' stroke-width='1.2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--s-4) center;
  padding-right: var(--s-10);
  cursor: pointer;
}
.textarea { min-height: 120px; resize: vertical; }
.field__hint { margin-top: var(--s-2); font-size: var(--fs-2xs); color: var(--ink-muted); }
.field__error { margin-top: var(--s-2); font-size: var(--fs-2xs); color: var(--danger); }

/* Inline form (newsletter) */
.inline-form { display: flex; border-bottom: 1px solid currentColor; }
.inline-form .input {
  flex: 1; border: 0; background: transparent; padding-inline: 0;
  padding-block: var(--s-3); font-size: var(--fs-base);
}
.inline-form .input:focus { box-shadow: none; }
.inline-form button {
  padding-inline: var(--s-4);
  font-size: var(--fs-2xs); text-transform: uppercase; letter-spacing: var(--tracking-wide);
}

/* --- 8. Badges & pills --------------------------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: var(--s-1);
  padding: 0.3rem var(--s-2);
  font-size: var(--fs-3xs);
  text-transform: uppercase; letter-spacing: var(--tracking-wide); font-weight: 500;
  background: var(--ink); color: #fff;
}
.badge--lime { background: var(--skp-lime); color: var(--blue-900); }
.badge--blue { background: var(--skp-blue); color: #fff; }
.badge--outline { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.badge--soft { background: var(--paper-alt); color: var(--ink-soft); }

.pill {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 0.5rem var(--s-4);
  border: 1px solid var(--line); border-radius: var(--radius-pill);
  font-size: var(--fs-xs); letter-spacing: var(--tracking-tight);
  background: #fff; cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.pill:hover { border-color: var(--ink); }
.pill[aria-pressed="true"], .pill.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* --- 9. Utilities -------------------------------------------------------- */
.u-mt-0 { margin-top: 0 !important; }
.u-mt-2 { margin-top: var(--s-2); }
.u-mt-4 { margin-top: var(--s-4); }
.u-mt-6 { margin-top: var(--s-6); }
.u-mt-8 { margin-top: var(--s-8); }
.u-mt-12 { margin-top: var(--s-12); }
.u-mb-4 { margin-bottom: var(--s-4); }
.u-mb-8 { margin-bottom: var(--s-8); }
.u-hide { display: none !important; }
.u-nowrap { white-space: nowrap; }
.u-tabular { font-variant-numeric: tabular-nums; }
.u-full { grid-column: 1 / -1; }
.u-sticky { position: sticky; top: calc(var(--header-h) + var(--s-6)); }

/* Wide content — tables, code, diagrams — scrolls inside its own box so the
   page body never scrolls sideways. */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll > table { min-width: 460px; }

/* Reveal on scroll */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-in { opacity: 1; transform: none; }
/* Fallback when the observer never runs (background tab, print, no JS). */
.no-reveal [data-reveal] { opacity: 1 !important; transform: none !important; }
@media print { [data-reveal] { opacity: 1 !important; transform: none !important; } }

/* Marquee */
.marquee { overflow: hidden; display: flex; user-select: none; }
.marquee__track {
  display: flex; flex-shrink: 0; gap: var(--s-10);
  padding-right: var(--s-10);
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-100%); } }

/* --- 10. Responsive ------------------------------------------------------ */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  :root { --header-h: 56px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; gap: var(--s-3); }
}