/* -----------------------------------------------------------
   EduLinked Visual Identity Framework — Components
   File: site/assets/brand/components.css
   Version: 1.0
   Date: 2025-10-07
   Author: Sarah Ailish McLoughlin
   Department: Digital Governance & Accessibility
   Reviewed by: EduLinked Web Systems Team
   Status: Approved
   Repository: EduLinked-Systems/Website
   Category: Brand & Design
   Tags: components, buttons, cards, header, nav, accessibility, WCAG
   Notes: Implements Section 4 (Component Visual Style). Uses tokens from
          site/assets/brand/tokens.css and base type from typography.css.
------------------------------------------------------------ */

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

/* ===== Button system: consistent sizing & feel ===== */
:root {
  --btn-height: 48px;
  --btn-radius: var(--radius-lg, 20px);
  --btn-pad-x: 1.25rem;
  --btn-fs: 1rem;          /* >= 16px */
}

.button, .btn, button, [role="button"] {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--btn-height, 48px);
  padding: 0 var(--btn-pad-x, 1.25rem);
  border-radius: var(--btn-radius, var(--radius-lg, 20px));
  border: 0;
  font: inherit;
  font-size: var(--btn-font-size, 1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--navy-900, #0F2440);
  background: var(--white, #fff);
  transition: transform .15s ease, box-shadow .25s ease;
  box-shadow: var(--shadow-soft, 0 4px 20px rgba(0,0,0,.05));
}

/* Primary CTA: solid rainbow (light ramp) with dark text for contrast */
.button.cta {
  color: var(--neutral-dark, #222);
  background: var(--rainbow-gradient);
}

/* Alt CTA: gradient border on white (guaranteed contrast) */
.button.gradient-border {
  position: relative;
  background: var(--white, #fff);
  border: 2px solid transparent;
}
.button.gradient-border::before {
  content: "";
  position: absolute; inset: -2px;
  border-radius: inherit;
  background: var(--rainbow-gradient);
  z-index: -1;
}

/* Hover/focus */
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow-card, 0 8px 24px rgba(0,0,0,.08)); }
.button:active { transform: translateY(0); }
.button:focus-visible { outline: 3px solid var(--el-blue, #004AAD); outline-offset: 2px; }

/* Disabled */
.button[disabled] { opacity: .6; cursor: not-allowed; }


/* ---------- Cards & Panels ------------------------------------------------ */

.card, .container.card, .panel, .aac-card {
  background: var(--white, #fff);
  border: 1px solid color-mix(in srgb, var(--navy-900, #0F2440) 8%, transparent);
  border-radius: var(--radius-xl, 24px);
  box-shadow: var(--shadow-card, 0 8px 24px rgba(0,0,0,.08));
  padding: var(--space-32, 2rem);
}

/* AAC communication card layout */
.aac-card {
  background: var(--aac-card-bg, var(--white, #fff));
  padding: var(--aac-card-padding, var(--space-32, 2rem));
  display: grid;
  gap: var(--aac-card-gap, var(--space-24, 1.5rem));
  grid-template-columns: minmax(0, var(--aac-symbol-size, clamp(3.5rem, 12vw, 5.5rem))) minmax(0, 1fr);
  grid-template-areas:
    "symbol meta"
    "symbol heading"
    "symbol helper"
    "symbol cta";
  align-items: start;
  max-inline-size: 100%;
  color: inherit;
  text-decoration: none;
}

.aac-card:focus-visible {
  outline: var(--focus-ring, 3px solid #004AAD);
  outline-offset: 3px;
}

.aac-card__symbol {
  grid-area: symbol;
  display: grid;
  place-items: center;
  inline-size: var(--aac-symbol-size, clamp(3.5rem, 12vw, 5.5rem));
  block-size: var(--aac-symbol-size, clamp(3.5rem, 12vw, 5.5rem));
  border-radius: var(--aac-symbol-radius, var(--radius-xl, 24px));
  background: var(--aac-symbol-bg, rgba(0, 74, 173, 0.12));
  color: var(--navy-900, #0F2440);
  margin-inline-end: var(--aac-symbol-gap, var(--space-24, 1.5rem));
  position: relative;
}

.aac-card__symbol > img,
.aac-card__symbol > svg {
  width: 60%;
  height: 60%;
  max-width: 100%;
  max-height: 100%;
}

.aac-card__symbol > svg {
  fill: currentColor;
}

.aac-card__meta {
  grid-area: meta;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-08, 0.5rem);
  align-items: center;
  min-height: 1.5rem;
}

.aac-card__status,
.aac-card__meta .chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(209, 218, 237, 0.55);
  color: var(--navy-700, #2a426b);
  border: 1px solid rgba(127, 158, 200, 0.35);
}

@supports (color: color-mix(in srgb, #000 50%, transparent)) {
  .aac-card__status,
  .aac-card__meta .chip {
    background: color-mix(in srgb, var(--navy-100, #d1daed) 55%, transparent);
    border-color: color-mix(in srgb, var(--navy-300, #7f9ec8) 35%, transparent);
  }
}

.aac-card__heading {
  grid-area: heading;
  margin: 0;
  max-inline-size: var(--aac-text-max-width, 48ch);
}

.aac-card__helper {
  grid-area: helper;
  margin: 0;
  max-inline-size: var(--aac-text-max-width, 48ch);
  color: var(--navy-700, #2a426b);
}

.aac-card__cta {
  grid-area: cta;
  display: inline-flex;
  flex-wrap: wrap;
  gap: clamp(calc(var(--space-16, 1rem) * 0.5), 1.5vw, var(--space-16, 1rem));
  align-items: center;
}

.aac-card__cta > * {
  flex: 0 1 auto;
}

.aac-card .kicker {
  grid-area: meta;
  margin: 0;
}

.aac-card .accent {
  grid-area: symbol;
  width: clamp(0.4rem, 1vw, 0.6rem);
  border-radius: var(--aac-symbol-radius, var(--radius-xl, 24px));
  margin: 0;
  align-self: stretch;
}

@media (max-width: 720px) {
  .aac-card {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "meta"
      "symbol"
      "heading"
      "helper"
      "cta";
  }

  .aac-card__symbol {
    margin-inline-end: 0;
    justify-self: flex-start;
  }

  .aac-card__cta {
    justify-self: stretch;
    justify-content: flex-start;
  }
}

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

.site-header {
  background: var(--navy-900, #0F2440);
  color: var(--white, #fff);
}
.site-header a { color: var(--white, #fff); }

/* Primary nav list normalization */
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-16, 1rem);
  flex-wrap: wrap;
}
.site-nav a {
  text-decoration: none;
  font-weight: 600;
  padding: var(--space-08, 0.5rem) var(--space-16, 1rem);
  border-radius: var(--radius-lg, 20px);
}
.site-nav a:focus, .site-nav a:focus-visible {
  outline: var(--focus-ring, 3px solid #004AAD);
  outline-offset: 2px;
  background: color-mix(in srgb, var(--navy-100, #E6ECF6) 25%, transparent);
}

/* ---------- Forms (baseline) --------------------------------------------- */

input[type="text"], input[type="email"], input[type="url"], input[type="search"],
textarea, select {
  border: 1px solid #dcdcdc;
  border-radius: 10px;
  padding: .6rem .75rem;
  font: inherit;
  background: #fff;
  width: 100%;
  max-width: 42rem;
}
input:focus, textarea:focus, select:focus {
  outline: var(--focus-ring, 3px solid #004AAD);
  outline-offset: 2px;
  border-color: #b9d6ff;
}

/* ---------- Motion & Accessibility --------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

:focus-visible {
  outline: var(--focus-ring, 3px solid #004AAD);
  outline-offset: 2px;
}

/* Helper: visually-hidden (for icon-only controls) */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 1px 1px);
  white-space: nowrap; border: 0;
}
/* ======================= ACCESSIBILITY BAR ======================= */
.a11y-bar {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: #fff;
  border-bottom: 1px solid #eee;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.a11y-bar .container {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
}

/* Optional subtle animation for visibility, still honors prefers-reduced-motion */
@media (prefers-reduced-motion: no-preference) {
  .a11y-bar {
    animation: fadeSlideIn 0.4s ease-out;
  }
  @keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
  }
}
/* ======================= LAYOUT SAFE ZONE ======================= */
.site-header {
  margin-top: calc(var(--a11y-bar-height, 3.25rem) + 0.25rem);
}

/* Ensure consistent stacking order */
.a11y-bar {
  z-index: 1000;
}

/* Responsive tweak if the a11y bar grows taller (e.g. extra buttons) */
@media (max-width: 640px) {
  :root {
    --a11y-bar-height: 4.5rem;
  }
}