/* components.css — Reusable UI components.
 *
 * Buttons, cards, forms, header / navigation, footer, sticky inquiry CTA.
 * Mobile-first; min-width media queries only. All border-radius values use
 * var(--radius). Every CTA tap target meets var(--tap-min).
 *
 * Tokens only; no raw color/size literals where a token exists.
 *
 * Validates: Requirements 1.3, 1.5, 2.6, 3.3
 */

/* ---------------------------------------------------------------- *
 * 1. Buttons (.cta and variants)
 * ---------------------------------------------------------------- */

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  min-height: var(--tap-min);
  min-width: var(--tap-min);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-body);
  line-height: 1.2;
  letter-spacing: 0.005em;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
}

.cta:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.cta--primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent);
}

.cta--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-accent-contrast);
}

.cta--secondary {
  background: var(--bg-primary);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}

.cta--secondary:hover {
  border-color: var(--color-text);
  color: var(--color-text);
  background: var(--bg-primary);
}

/* Legacy alias — kept so existing markup still works. The CTA banner
 * is now a light surface, so this variant is just the primary button. */
.cta--on-dark {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent);
}

.cta--on-dark:hover {
  background: var(--color-accent-hover);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent-hover);
}

.cta--ghost {
  background: transparent;
  color: var(--color-accent);
  border: none;
  padding-inline: 0;
  min-width: 0;
}

.cta--ghost::after {
  content: "→";
  margin-left: var(--space-2);
  transition: transform var(--transition-fast);
}

.cta--ghost:hover::after { transform: translateX(2px); }

/* ---------------------------------------------------------------- *
 * 2. Cards
 * ---------------------------------------------------------------- */

.card {
  background: var(--bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card-hover);
}

.concept-card { display: flex; flex-direction: column; gap: var(--space-3); }

.concept-card__logo {
  /* Bleeds to the card edges to mirror the image variant, but keeps the
   * logo contained (no cropping) and centered on a neutral plate. */
  margin: calc(var(--space-5) * -1) calc(var(--space-5) * -1) var(--space-2);
  border-bottom: 1px solid var(--color-border);
  background: var(--bg-soft);
  border-radius: var(--radius) var(--radius) 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  aspect-ratio: 1 / 1;
  /* Lock the box: children must not grow it, even if their intrinsic
   * size is taller (square or tall logos otherwise blow past the
   * aspect-ratio and produce inconsistent card heights). */
  overflow: hidden;
}

.concept-card__logo img,
.concept-card__logo svg {
  display: block;
  width: 100%;
  height: 100%;
  /* For raster/svg-as-img the browser honors object-fit; for inline SVG
   * the element's own preserveAspectRatio handles letterboxing and
   * width/height: 100% prevents intrinsic sizing from leaking out. */
  object-fit: contain;
}

.concept-visual {
  margin: calc(var(--space-5) * -1) calc(var(--space-5) * -1) var(--space-2);
  border-bottom: 1px solid var(--color-border);
  background: var(--bg-soft);
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}

.concept-visual img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.concept-card .concept-name {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--color-text);
}

.concept-card .concept-tagline {
  color: var(--color-muted);
  font-size: var(--fs-body);
  margin-top: calc(var(--space-1) * -1);
}

.concept-card .concept-description {
  color: var(--color-text);
  font-size: var(--fs-body);
}

.concept-card .concept-target {
  font-size: var(--fs-caption);
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

.concept-card .concept-target strong {
  display: block;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-size: 0.6875rem;
  color: var(--color-subtle);
  margin-bottom: var(--space-1);
  font-weight: 600;
}

.concept-card .highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: 0;
}

.concept-card .highlights li {
  position: relative;
  padding-left: var(--space-5);
  font-size: var(--fs-body);
  color: var(--color-text);
}

.concept-card .highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-highlight);
}

.concept-card .cta { align-self: flex-start; margin-top: var(--space-2); }

/* ---------------------------------------------------------------- *
 * 3. Forms
 * ---------------------------------------------------------------- */

.field { display: flex; flex-direction: column; gap: var(--space-2); }

.field label,
.label-like {
  font-size: var(--fs-caption);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.field-hint { font-size: var(--fs-caption); color: var(--color-muted); }

.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: var(--tap-min);
  padding: var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.4;
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--color-subtle); }

.field textarea {
  min-height: calc(var(--tap-min) * 2.5);
  resize: vertical;
}

.field input:hover,
.field textarea:hover,
.field select:hover { border-color: var(--color-text); }

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(43, 35, 248, 0.18);
}

.field--error input,
.field--error textarea,
.field--error select { border-color: var(--color-error); }

.field--error input:focus,
.field--error textarea:focus,
.field--error select:focus {
  box-shadow: 0 0 0 3px rgba(179, 38, 30, 0.15);
}

.field-error {
  color: var(--color-error);
  font-size: var(--fs-caption);
}

.field-radio-group {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-block: var(--space-1);
}

.field-radio-group label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 400;
  font-size: var(--fs-body);
  cursor: pointer;
  letter-spacing: 0;
}

.field-radio-group input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  margin: 0;
}

.form-success,
.form-error-banner {
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

.form-success {
  padding: var(--space-4) var(--space-5);
  background: var(--bg-soft);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-success);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: var(--fs-body);
}

.form-error-banner {
  padding: var(--space-4) var(--space-5);
  background: var(--color-error-soft);
  border: 1px solid rgba(179, 38, 30, 0.2);
  border-left: 3px solid var(--color-error);
  border-radius: var(--radius);
  color: var(--color-error);
  font-size: var(--fs-body);
}

.honeypot {
  position: absolute;
  left: -10000px;
  top: auto;
  height: 1px;
  width: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* ---------------------------------------------------------------- *
 * 4. Header & Navigation
 * ---------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header.nav--open {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand:hover { color: var(--color-text); }

.brand-mark { color: var(--color-accent); margin-left: 1px; }
.site-footer .brand-mark { color: var(--color-accent-on-dark); }

/* Mobile-first nav: slide-out panel toggled by .nav--open */
.nav-list {
  position: fixed;
  inset-block: 0;
  inset-inline-end: 0;
  width: min(86vw, 340px);
  min-height: 100vh;
  min-height: 100dvh;
  max-height: 100dvh;
  background: var(--bg-primary);
  padding: var(--space-4) var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  transform: translateX(100%);
  transition: transform var(--transition),
              visibility 0s linear var(--transition);
  border-left: 1px solid var(--color-border);
  z-index: 60;
  overflow-y: auto;
  overscroll-behavior: contain;
  visibility: hidden;
}

.site-header.nav--open .nav-list {
  transform: translateX(0);
  visibility: visible;
  transition: transform var(--transition),
              visibility 0s linear 0s;
}

/* Close-row: holds the explicit "X" button at the top of the slide-out panel.
   Mobile-first; hidden on desktop in the breakpoint below. */
.nav-list__close-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: var(--space-3);
}

.nav-close {
  width: var(--tap-min);
  height: var(--tap-min);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-muted);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: color var(--transition-fast),
              border-color var(--transition-fast),
              background var(--transition-fast);
}

.nav-close:hover {
  color: var(--color-text);
  border-color: var(--color-text);
  background: var(--bg-soft);
}

.nav-close:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-list a {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast),
              background var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.nav-list a:hover { color: var(--color-text); background: var(--bg-soft); }

.nav-list a.is-active {
  color: var(--color-text);
  background: var(--bg-soft);
}

/* Hamburger toggle */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  z-index: 70;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition-fast);
}

.site-header.nav--open .nav-toggle span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.site-header.nav--open .nav-toggle span:nth-child(2) { opacity: 0; }
.site-header.nav--open .nav-toggle span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Backdrop */
.nav-backdrop {
  position: fixed;
  inset: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: rgba(15, 20, 25, 0.36);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  z-index: 55;
}

.site-header.nav--open .nav-backdrop { opacity: 1; pointer-events: auto; }

/* ---------------------------------------------------------------- *
 * 5. Footer
 * ---------------------------------------------------------------- */

.site-footer {
  background: var(--bg-soft);
  color: var(--color-text);
  padding-block: var(--space-7);
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.site-footer a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-footer a:hover { color: var(--color-accent); opacity: 1; }

.site-footer .social-links a {
  color: var(--color-text);
  border-color: var(--color-border-strong);
  background: var(--bg-primary);
}

.site-footer .social-links a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--bg-primary);
  opacity: 1;
}

.site-footer h4 {
  font-size: var(--fs-caption);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-subtle);
  margin-bottom: var(--space-3);
  opacity: 1;
}

.footer-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.footer-brand p {
  color: var(--color-muted);
  font-size: var(--fs-body);
  max-width: 36ch;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--fs-body);
}

.footer-list a,
.footer-list { color: var(--color-muted); }

.footer-list li { color: var(--color-muted); }

.footer-bottom {
  padding-top: var(--space-5);
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-caption);
  color: var(--color-subtle);
}

/* ---------------------------------------------------------------- *
 * 6. Sticky inquiry CTA (mobile only)
 * ---------------------------------------------------------------- */

.sticky-inquire {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: 40;
  box-shadow: var(--shadow-accent);
}

/* ---------------------------------------------------------------- *
 * Desktop overrides (>768px) — inline horizontal nav
 * ---------------------------------------------------------------- */

@media (min-width: 769px) {
  .nav-toggle,
  .nav-backdrop,
  .nav-list__close-row { display: none; }

  .nav-list {
    position: static;
    inset: auto;
    width: auto;
    height: auto;
    min-height: 0;
    max-height: none;
    background: transparent;
    padding: 0;
    flex-direction: row;
    gap: var(--space-1);
    transform: none;
    border-left: none;
    z-index: auto;
    overflow: visible;
    visibility: visible;
  }

  .nav-list a {
    padding: var(--space-2) var(--space-3);
    font-size: var(--fs-caption);
    letter-spacing: var(--tracking-wide);
  }

  .nav-list a.is-active { background: transparent; color: var(--color-text); }

  .nav-list a.is-active::after {
    content: "";
    display: block;
    height: 2px;
    margin-top: 6px;
    background: var(--color-highlight);
  }

  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; }
}

@media (min-width: 1025px) {
  .sticky-inquire { display: none; }
}