/* Reusable components. Change a component's look here — once — and it
   updates everywhere it's used. */

/* --- Cookie notice -------------------------------------------------- */
.cookie-banner {
  position: fixed;
  z-index: 100;
  right: var(--space-4);
  bottom: var(--space-4);
  left: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  border: var(--border-width) solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: 0 10px 30px rgba(35, 33, 29, 0.16);
}

.cookie-banner.is-dismissed { display: none; }
.cookie-banner p { margin: 0; color: var(--color-text-muted); font-size: var(--text-xs); line-height: 1.5; }
.cookie-banner .btn { flex: 0 0 auto; min-width: 56px; padding: var(--space-2) var(--space-3); }

/* --- Header / Navigation ------------------------------------------- */
.site-header {
  border-bottom: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}

.logo svg { display: block; }

.logo__wordmark {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.main-nav__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-5);
}

.main-nav__list a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}

.main-nav__list a:hover,
.main-nav__list a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--color-primary);
  outline: none;
}

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 20px;
}

.nav-toggle__bars span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 160ms ease, opacity 160ms ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) 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(-6px) rotate(-45deg); }

@media (max-width: 780px) {
  body { overflow-x: hidden; }
  .site-header__inner { position: relative; }
  .nav-toggle { display: inline-flex; }
  .main-nav { position: static; }
  .main-nav__list {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    z-index: 20;
    top: calc(100% + 1px);
    left: 50%;
    right: auto;
    width: min(420px, calc(100vw - 24px));
    transform: translateX(-50%);
    max-height: calc(100vh - 76px);
    overflow-y: auto;
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-top: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    padding: var(--space-2) var(--space-5);
    box-shadow: 0 12px 24px rgba(35, 33, 29, 0.12);
  }
  .main-nav__list.is-open { display: flex; }
  .main-nav__list li { width: 100%; }
  .main-nav__list a {
    display: block;
    padding: var(--space-4) 0;
    border-bottom: var(--border-width) solid var(--color-border);
    font-size: var(--text-base);
  }
  .main-nav__list li:last-child a { border-bottom: 0; }
}

/* --- Buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid transparent;
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
}
.btn-primary:hover { background: var(--color-primary-hover); color: var(--color-primary-contrast); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-block { width: 100%; }

/* --- Cards -------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.card + .card { margin-top: var(--space-4); }

/* --- Forms ---------------------------------------------------------- */
.field {
  margin-bottom: var(--space-4);
}

.field label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.field .hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: var(--text-base);
  padding: var(--space-3);
  border: var(--border-width) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: 44px; /* comfortable touch target */
}

.field textarea { min-height: 120px; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
  .cookie-banner { right: var(--space-3); bottom: var(--space-3); left: var(--space-3); align-items: flex-end; }
  .cookie-banner p { max-width: 28ch; }
}

.form-error {
  color: var(--color-error);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}
.form-error:empty { display: none; }

.form-errors {
  border: var(--border-width) solid var(--color-error);
  background: #fbeceb;
  color: var(--color-error);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
}

.form-success {
  border: var(--border-width) solid var(--color-success);
  background: #ecf3ed;
  color: var(--color-success);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
}

/* honeypot field, hidden from real users, visible to simple bots only via layout */
.hp-field { position: absolute; left: -9999px; }

/* --- Footer ------------------------------------------------------- */
.site-footer {
  border-top: var(--border-width) solid var(--color-border);
  background: var(--color-surface-alt);
  padding: var(--space-7) 0 var(--space-6);
  margin-top: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-6);
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-grid h4 {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-grid li { margin-bottom: var(--space-2); }

.footer-grid a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer-grid a:hover { color: var(--color-primary); }

.footer-bottom {
  border-top: var(--border-width) solid var(--color-border);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* --- Breadcrumb ---------------------------------------------------- */
.breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 0;
  margin: 0 0 var(--space-5);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-2);
  color: var(--color-text-faint);
}
.breadcrumb a { color: var(--color-text-muted); }

/* --- FAQ ------------------------------------------------------------ */
.faq-item {
  border-bottom: var(--border-width) solid var(--color-border);
  padding: var(--space-4) 0;
}
.faq-item:first-child { border-top: var(--border-width) solid var(--color-border); }
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "+";
  display: inline-block;
  width: 1.25em;
  color: var(--color-primary);
  font-weight: 700;
}
.faq-item[open] summary::before { content: "\2212"; }
.faq-item p { margin-top: var(--space-3); margin-bottom: 0; }
.faq-item__answer p + p { margin-top: var(--space-3); }
.faq-item__answer a { text-decoration: underline; text-underline-offset: 2px; }

/* --- Empty states ---------------------------------------------------- */
.empty-state {
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  color: var(--color-text-muted);
}

/* --- Ask Khulasa assistant -------------------------------------------- */
.ai-assistant {
  background: linear-gradient(145deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-5), 4vw, var(--space-8));
  box-shadow: 0 12px 34px rgba(35, 33, 29, 0.06);
}

.ai-assistant__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ai-assistant__eyebrow-mark {
  display: inline-grid;
  place-items: center;
  min-width: 28px;
  height: 22px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-size: 10px;
  letter-spacing: 0.04em;
}

.ai-assistant__heading-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.ai-assistant h1 {
  margin: 0 0 var(--space-1);
  font-size: clamp(1.65rem, 4vw, var(--text-2xl));
  line-height: 1.15;
}

.ai-assistant__intro {
  margin: 0;
  color: var(--color-text-muted);
}

.ai-assistant__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  padding: 6px 10px;
  border: 1px solid rgba(45, 125, 75, 0.2);
  border-radius: 999px;
  background: rgba(45, 125, 75, 0.08);
  color: #2d7d4b;
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
}

.ai-assistant__status span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2d7d4b;
  box-shadow: 0 0 0 3px rgba(45, 125, 75, 0.13);
}

.ai-assistant__form {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.ai-assistant__form input {
  flex-grow: 1;
  min-height: 52px;
  padding: var(--space-3) var(--space-4);
  border: var(--border-width) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: var(--text-base);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.ai-assistant__form input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(151, 54, 38, 0.12);
}

.ai-assistant__form button {
  min-width: 92px;
}

.ai-assistant__form button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.ai-assistant__output {
  margin-top: var(--space-5);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.75;
  box-shadow: 0 5px 18px rgba(35, 33, 29, 0.04);
}

.ai-assistant__output p {
  margin: 0 0 var(--space-3);
}

.ai-assistant__output p:last-child {
  margin-bottom: 0;
}

.ai-assistant__output strong {
  color: var(--color-text);
  font-weight: 700;
}

.ai-assistant__output ul,
.ai-assistant__output ol {
  margin: var(--space-2) 0 var(--space-3);
  padding-left: 1.35rem;
}

.ai-assistant__output li + li {
  margin-top: 4px;
}

.ai-assistant__output .ai-response-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ai-assistant__output .ai-response-label::before {
  content: "AI";
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 20px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-size: 9px;
  letter-spacing: 0;
}

.ai-assistant__output.is-loading {
  color: var(--color-text-muted);
}

.ai-assistant__output.is-error {
  border-left-color: #b7791f;
}

.ai-assistant__disclosure {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-text-faint);
}

.ai-assistant__disclosure strong {
  color: var(--color-text-muted);
}

@media (max-width: 560px) {
  .ai-assistant__heading-row {
    display: block;
  }

  .ai-assistant__status {
    margin-top: var(--space-3);
  }

  .ai-assistant__form {
    flex-direction: column;
  }

  .ai-assistant__form button {
    width: 100%;
  }
}

/* --- Result box for calculators -------------------------------------- */
.result-box {
  background: var(--color-surface-alt);
  border: var(--border-width) solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-top: var(--space-5);
}
.result-box dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2) var(--space-4);
  margin: 0;
}
.result-box dt { color: var(--color-text-muted); font-size: var(--text-sm); }
.result-box dd { margin: 0; font-weight: 700; font-variant-numeric: tabular-nums; text-align: right; }
.result-box table { width: 100%; border-collapse: collapse; margin-top: var(--space-3); }
.result-box td { padding: var(--space-2) 0; border-bottom: var(--border-width) solid var(--color-border); font-size: var(--text-sm); }
.result-box td:last-child { text-align: right; font-variant-numeric: tabular-nums; }