/* ============================================================
   KAELO GLOBAL — COMPONENTS & PRIMITIVES
   Layout primitives, buttons, motion and the preloader.
   Built strictly on the tokens defined in design-tokens.css.
   ============================================================ */

/* --- Layout primitives ------------------------------------- */
.k-container {
  max-width: var(--k-container);
  margin-inline: auto;
  padding-inline: var(--k-bleed);
}
.k-container--wide {
  max-width: var(--k-container-wide);
  margin-inline: auto;
  padding-inline: var(--k-bleed);
}
.k-container--text {
  max-width: 760px;
  margin-inline: auto;
  padding-inline: var(--k-bleed);
}

.k-section {
  padding-block: clamp(var(--k-space-5), 3rem + 6vw, var(--k-space-7));
}
.k-section--tight { padding-block: clamp(var(--k-space-4), 2rem + 3vw, var(--k-space-6)); }

/* The signature cyan hairline — a recurring brand mark */
.k-accent-line {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--k-cyan);
  border: 0;
}

/* --- Buttons ----------------------------------------------- */
.k-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--k-font-body);
  font-size: var(--k-text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 1.05em 1.9em;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--k-ink);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--k-dur-fast) var(--k-ease),
              color var(--k-dur-fast) var(--k-ease);
}
.k-btn:hover { background: var(--k-ink); color: var(--k-canvas); }

.k-btn--cyan {
  background: var(--k-cyan);
  border-color: var(--k-cyan);
  color: var(--k-black);
}
.k-btn--cyan:hover {
  background: var(--k-cyan-deep);
  border-color: var(--k-cyan-deep);
  color: var(--k-black);
}

.k-dark .k-btn { color: var(--k-white); }
.k-dark .k-btn:hover { background: var(--k-white); color: var(--k-black); }

/* --- Motion: scroll reveal ---------------------------------
   No-flash pattern: content is visible by default. Only when JS
   confirms support (adds .k-js to <html>) does it hide-then-reveal.
   This keeps content visible to crawlers / no-JS users / slow nets.
   ------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  html.k-js [data-k-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity var(--k-dur-base) var(--k-ease),
                transform var(--k-dur-base) var(--k-ease);
  }
  html.k-js [data-k-reveal].is-visible {
    opacity: 1;
    transform: none;
  }

  /* staggered children — for grids and lists */
  html.k-js [data-k-reveal-group] > * {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity var(--k-dur-base) var(--k-ease),
                transform var(--k-dur-base) var(--k-ease);
  }
  html.k-js [data-k-reveal-group].is-visible > * { opacity: 1; transform: none; }
  html.k-js [data-k-reveal-group].is-visible > *:nth-child(2) { transition-delay: 0.08s; }
  html.k-js [data-k-reveal-group].is-visible > *:nth-child(3) { transition-delay: 0.16s; }
  html.k-js [data-k-reveal-group].is-visible > *:nth-child(4) { transition-delay: 0.24s; }
  html.k-js [data-k-reveal-group].is-visible > *:nth-child(5) { transition-delay: 0.32s; }
  html.k-js [data-k-reveal-group].is-visible > *:nth-child(6) { transition-delay: 0.40s; }
}

/* ============================================================
   Sentinel theme contexts — used on any page that alternates
   light / dark sections. Loaded globally so it works outside
   the homepage too (division hubs, future templates).
   ============================================================ */
.k-label--cyan { color: var(--k-cyan); }

[data-k-theme="dark"] {
  background: var(--k-black);
  color: var(--k-white);
}
[data-k-theme="dark"] h1,
[data-k-theme="dark"] h2,
[data-k-theme="dark"] h3,
[data-k-theme="dark"] h4,
[data-k-theme="dark"] p,
[data-k-theme="dark"] dt,
[data-k-theme="dark"] dd,
[data-k-theme="dark"] li,
[data-k-theme="dark"] span { color: var(--k-white); }
[data-k-theme="dark"] .k-label { color: var(--k-white-60); }
[data-k-theme="dark"] .k-label--cyan { color: var(--k-cyan); }
[data-k-theme="dark"] a:not(.k-btn):not(.k-link) { color: var(--k-cyan); }
[data-k-theme="dark"] a:not(.k-btn):not(.k-link):hover { color: var(--k-white); }
[data-k-theme="dark"] .k-btn--cyan { color: var(--k-black); }
[data-k-theme="dark"] .k-btn--cyan:hover { color: var(--k-black); }

[data-k-theme="light"] { background: var(--k-canvas); color: var(--k-ink); }

/* --- Preloader --------------------------------------------- */
html.k-loading { overflow: hidden; }

#k-preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--k-black);
  transition: opacity var(--k-dur-slow) var(--k-ease),
              visibility 0s linear var(--k-dur-slow);
}
#k-preloader.is-done {
  opacity: 0;
  visibility: hidden;
}
#k-preloader .k-preloader__mark {
  width: clamp(120px, 18vw, 220px);
  opacity: 0;
  animation: k-preloader-in var(--k-dur-slow) var(--k-ease) 0.1s forwards;
}
@keyframes k-preloader-in {
  to { opacity: 1; }
}

/* ============================================================
   SKIP-TO-CONTENT LINK
   WCAG 2.4.1. Hidden until keyboard focus.
   ============================================================ */
.k-skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100000;
  padding: 0.75rem 1.25rem;
  background: var(--k-cyan);
  color: var(--k-black);
  font-family: var(--k-font-body);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 0;
  transition: top 0.18s ease;
}
.k-skip-link:focus {
  top: 1rem;
  outline: 2px solid var(--k-black);
  outline-offset: 2px;
}

/* ============================================================
   FOCUS-VISIBLE — keyboard navigation polish
   Applies a clear, brand-aligned focus ring to interactive
   elements only when the user is navigating with a keyboard.
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--k-cyan);
  outline-offset: 3px;
  border-radius: 2px;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--k-cyan);
  outline-offset: 3px;
}

/* ============================================================
   COOKIE CONSENT BANNER
   Pinned to bottom of viewport. Restrained, editorial.
   ============================================================ */
.k-consent {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 9000;
  background: var(--k-black);
  color: var(--k-paper);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  transform: translateY(100%);
  transition: transform 0.32s cubic-bezier(0.2, 0.7, 0.2, 1);
  box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.45);
}
.k-consent.is-open {
  transform: translateY(0);
}
.k-consent__inner {
  max-width: var(--k-container-wide);
  margin-inline: auto;
  padding: clamp(1.25rem, 0.5rem + 1.6vw, 2rem) var(--k-bleed);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(1.25rem, 0.5rem + 1.6vw, 2.5rem);
  align-items: center;
}
.k-consent__label {
  font-family: var(--k-font-body);
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--k-cyan);
  margin: 0 0 0.5rem;
}
.k-consent__lead {
  font-family: var(--k-font-body);
  font-size: 0.875rem;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.82);
  margin: 0 0 0.625rem;
  max-width: 58ch;
}
.k-consent__links {
  font-family: var(--k-font-body);
  font-size: 0.75rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
}
.k-consent__links a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255, 255, 255, 0.3);
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}
.k-consent__links a:hover {
  color: var(--k-cyan);
  text-decoration-color: var(--k-cyan);
}
.k-consent__links span { margin: 0 0.5rem; color: rgba(255, 255, 255, 0.3); }
.k-consent__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  justify-content: flex-end;
}
.k-consent__btn {
  font-family: var(--k-font-body);
  font-weight: 500;
  font-size: 0.8125rem;
  padding: 0.7rem 1.1rem;
  border-radius: 0;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.k-consent__btn--ghost {
  background: transparent;
  color: rgba(255, 255, 255, 0.82);
  border-color: rgba(255, 255, 255, 0.22);
}
.k-consent__btn--ghost:hover {
  color: var(--k-paper);
  border-color: rgba(255, 255, 255, 0.5);
}
.k-consent__btn--solid {
  background: var(--k-cyan);
  color: var(--k-black);
  border-color: var(--k-cyan);
}
.k-consent__btn--solid:hover {
  background: #00d6e2;
  border-color: #00d6e2;
}

@media (max-width: 880px) {
  .k-consent__inner { grid-template-columns: 1fr; }
  .k-consent__actions { justify-content: stretch; }
  .k-consent__btn { flex: 1 1 auto; }
}

/* ============================================================
   ACCESSIBILITY LAUNCHER + PANEL
   Floating button bottom-left, panel slides in from the left.
   ============================================================ */
.k-a11y-launcher {
  position: fixed;
  bottom: 1.25rem;
  left: 1.25rem;
  z-index: 8000;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.96);
  color: var(--k-ink);
  border: 1px solid rgba(10, 10, 10, 0.12);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12),
              0 2px 6px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1),
              background 0.22s ease,
              color 0.22s ease,
              border-color 0.22s ease,
              box-shadow 0.22s ease;
}
.k-a11y-launcher:hover {
  transform: scale(1.05);
  background: var(--k-ink);
  color: var(--k-cyan);
  border-color: var(--k-ink);
}
.k-a11y-launcher svg {
  display: block;
  transition: transform 0.22s ease;
}
.k-a11y-launcher:hover svg { transform: scale(1.04); }

.k-a11y-panel {
  position: fixed;
  bottom: 5.25rem;
  left: 1.25rem;
  z-index: 8001;
  width: min(320px, calc(100vw - 2.5rem));
  background: var(--k-paper);
  color: var(--k-ink);
  border: 1px solid var(--k-line);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.18);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.k-a11y-panel.is-open {
  opacity: 1;
  transform: translateY(0);
}
.k-a11y-panel__head {
  position: relative;
  padding: 1.1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--k-line);
}
.k-a11y-panel__eyebrow {
  font-family: var(--k-font-body);
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--k-cyan-deep);
  margin: 0 0 0.25rem;
}
.k-a11y-panel__h {
  font-family: var(--k-font-heading);
  font-weight: 400;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--k-ink);
}
.k-a11y-panel__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 0;
  color: var(--k-ink-60);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s ease;
}
.k-a11y-panel__close:hover { color: var(--k-ink); }
.k-a11y-panel__body {
  padding: 1.1rem 1.25rem 1.25rem;
}

.k-a11y-group { margin-bottom: 1rem; }
.k-a11y-group:last-child { margin-bottom: 0; }
.k-a11y-group__label {
  font-family: var(--k-font-body);
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--k-ink);
  margin: 0 0 0.4rem;
  letter-spacing: 0.04em;
}
.k-a11y-group__row {
  display: flex;
  gap: 0.4rem;
}
.k-a11y-btn {
  flex: 1;
  font-family: var(--k-font-body);
  font-weight: 500;
  font-size: 0.8125rem;
  padding: 0.55rem 0.75rem;
  background: transparent;
  border: 1px solid var(--k-line);
  color: var(--k-ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  border-radius: 0;
}
.k-a11y-btn:hover {
  border-color: var(--k-ink);
}
.k-a11y-btn[aria-pressed="true"] {
  background: var(--k-ink);
  color: var(--k-paper);
  border-color: var(--k-ink);
}
.k-a11y-btn--lg { font-size: 1rem; }
.k-a11y-reset {
  width: 100%;
  background: transparent;
  border: 0;
  border-top: 1px solid var(--k-line);
  padding: 0.75rem 0 0;
  margin-top: 0.5rem;
  text-align: left;
  font-family: var(--k-font-body);
  font-size: 0.75rem;
  color: var(--k-ink-60);
  cursor: pointer;
  transition: color 0.15s ease;
}
.k-a11y-reset:hover { color: var(--k-cyan-deep); }
.k-a11y-panel__note {
  font-family: var(--k-font-body);
  font-size: 0.6875rem;
  color: var(--k-ink-60);
  margin: 1rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--k-line);
  line-height: 1.5;
}
.k-a11y-panel__note a {
  color: var(--k-cyan-deep);
}

/* ============================================================
   A11Y PREFERENCE MODES — applied via <html data-k-*="..."> attributes
   ============================================================ */
html[data-k-text="small"]  body { font-size: 0.94em; }
html[data-k-text="large"]  body { font-size: 1.12em; }

html[data-k-contrast="high"] {
  --k-ink: #000000;
  --k-ink-60: #1a1a1a;
  --k-ink-80: #0d0d0d;
  --k-paper: #ffffff;
  --k-line: #000000;
  --k-cyan-deep: #006975;
}
html[data-k-contrast="high"] body {
  background: #ffffff !important;
}
html[data-k-contrast="high"] a {
  text-decoration: underline;
}

html[data-k-motion="reduced"] *,
html[data-k-motion="reduced"] *::before,
html[data-k-motion="reduced"] *::after {
  animation-duration: 0.001ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.001ms !important;
  scroll-behavior: auto !important;
}

/* Respect OS-level reduced-motion as a default */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}
