/* ==========================================================================
   OptiRank Studio — Components
   Buttons, cards, nav, footer, forms, badges, and shared page bands.
   ========================================================================== */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 500;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    color var(--duration-base) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn:disabled:active {
  transform: none;
}

.btn--primary {
  background-color: var(--color-primary-solid);
  color: var(--color-on-primary);
}

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

.btn--secondary {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-ink);
}

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

.btn--ghost {
  background-color: transparent;
  color: var(--color-ink);
  padding-inline: var(--space-2);
}

.btn--ghost:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.btn--lg {
  min-height: 52px;
  padding-inline: var(--space-4);
  font-size: var(--text-body-lg);
}

.btn--on-primary {
  background-color: #FFFFFF;
  color: var(--color-primary-solid);
}

.btn--on-primary:hover {
  background-color: #FFFFFF;
  color: var(--color-primary-solid-hover);
}

.btn--block {
  width: 100%;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Arrow link ------------------------------------------------------------- */

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  text-decoration: none;
}

.link-arrow::after {
  content: "→";
  transition: transform var(--duration-base) var(--ease-out);
}

.link-arrow:hover::after {
  transform: translateX(3px);
}

/* Cards ------------------------------------------------------------------ */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 2px rgba(11, 14, 20, 0.04);
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out);
}

.card--hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.card--flat {
  box-shadow: none;
}

.card--tint {
  background-color: var(--color-primary-tint);
  border-color: transparent;
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  flex-shrink: 0;
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__title {
  margin-bottom: var(--space-1);
  font-size: var(--text-h3);
}

.card__text {
  color: var(--color-ink-dim);
  margin-bottom: var(--space-3);
}

.card__footer {
  margin-top: auto;
  padding-top: var(--space-1);
}

/* Badges ----------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  flex-shrink: 0;
}

.badge--no-dot::before {
  display: none;
}

.badge--primary {
  background-color: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
}

.badge--accent {
  background-color: color-mix(in srgb, var(--color-accent) 16%, transparent);
  color: color-mix(in srgb, var(--color-accent) 82%, var(--color-ink));
}

.badge--warn {
  background-color: color-mix(in srgb, var(--color-warn) 16%, transparent);
  color: color-mix(in srgb, var(--color-warn) 78%, var(--color-ink));
}

.badge--danger {
  background-color: color-mix(in srgb, var(--color-danger) 12%, transparent);
  color: var(--color-danger);
}

.badge--neutral {
  background-color: var(--color-surface-alt);
  color: var(--color-ink-dim);
  border: 1px solid var(--color-border);
}

/* Header / nav ----------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: color-mix(in srgb, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--duration-base) var(--ease-out),
    background-color var(--duration-base) var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  background-color: color-mix(in srgb, var(--color-surface) 96%, transparent);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: var(--header-height);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--color-ink);
}

.logo__dot {
  width: 6px;
  height: 6px;
  margin-left: 3px;
  border-radius: 50%;
  background-color: var(--color-accent);
  align-self: center;
  flex-shrink: 0;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-right: -8px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  cursor: pointer;
}

.nav-toggle:hover {
  background-color: var(--color-surface-alt);
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

.nav-toggle__close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__open {
  display: none;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__close {
  display: block;
}

.site-nav {
  position: fixed;
  inset: var(--header-height) 0 auto 0;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  padding: var(--space-3) var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition:
    transform var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out),
    visibility var(--duration-base);
}

.site-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.site-nav__list {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav__list li {
  margin: 0;
}

.site-nav__link {
  display: block;
  padding: var(--space-1) 0;
  min-height: 44px;
  line-height: 28px;
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
}

.site-nav__link:hover {
  color: var(--color-primary);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
}

.site-nav__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    max-height: none;
    overflow: visible;
    padding: 0;
    background: transparent;
    border: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-3);
    margin: 0;
  }

  .site-nav__link {
    position: relative;
    padding: 0;
    min-height: 0;
    line-height: 1.4;
    font-size: 0.9375rem;
  }

  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    border-radius: 1px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--duration-base) var(--ease-out);
  }

  .site-nav__link:hover::after,
  .site-nav__link[aria-current="page"]::after {
    transform: scaleX(1);
  }

  .site-nav__actions {
    flex-direction: row;
    align-items: center;
    gap: var(--space-1);
    padding-top: 0;
    border-top: 0;
  }
}

/* Footer ----------------------------------------------------------------- */

.site-footer {
  padding-block: var(--space-8) var(--space-4);
  background-color: var(--color-surface-alt);
  border-top: 1px solid var(--color-border);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

@media (min-width: 640px) {
  .site-footer__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
  }

  .site-footer__brand {
    grid-column: auto;
  }
}

.site-footer__tagline {
  margin-top: var(--space-2);
  max-width: 34ch;
  font-size: 0.9375rem;
  color: var(--color-ink-dim);
}

.site-footer__heading {
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-dim);
}

.site-footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__list li {
  margin-bottom: 6px;
}

.site-footer__list a {
  font-size: 0.9375rem;
  color: var(--color-ink);
  text-decoration: none;
}

.site-footer__list a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-caption);
  color: var(--color-ink-dim);
}

.site-footer__bottom-links {
  display: flex;
  gap: var(--space-2);
}

.site-footer__bottom-links a {
  color: var(--color-ink-dim);
  text-decoration: none;
}

.site-footer__bottom-links a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

@media (min-width: 640px) {
  .site-footer__bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* Forms ------------------------------------------------------------------ */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
}

.field__optional {
  font-weight: 400;
  color: var(--color-ink-dim);
}

.input,
.textarea,
.select {
  width: 100%;
  min-height: 44px;
  padding: 10px var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-ink);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--duration-base) var(--ease-out);
}

.textarea {
  min-height: 132px;
  resize: vertical;
  line-height: 1.6;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--color-ink-dim);
  opacity: 0.75;
}

.input:hover,
.textarea:hover {
  border-color: var(--color-ink-dim);
}

.input:focus-visible,
.textarea:focus-visible,
.select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.field__error {
  display: none;
  align-items: center;
  gap: 6px;
  font-size: var(--text-caption);
  color: var(--color-danger);
}

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

.field.has-error .field__error {
  display: flex;
}

/* CTA band --------------------------------------------------------------- */

.cta-band {
  background-color: var(--color-primary-solid);
  color: var(--color-on-primary);
  text-align: center;
}

.cta-band__inner {
  max-width: 640px;
  margin-inline: auto;
  padding-block: var(--space-8);
}

@media (min-width: 1024px) {
  .cta-band__inner {
    padding-block: var(--space-12);
  }
}

.cta-band h2 {
  color: var(--color-on-primary);
  margin-bottom: var(--space-2);
}

.cta-band p {
  color: color-mix(in srgb, var(--color-on-primary) 86%, transparent);
  margin-bottom: var(--space-4);
}

.cta-band .btn-group {
  justify-content: center;
}

.cta-band__note {
  margin-top: var(--space-2);
  font-size: var(--text-caption);
}

/* Steps (process component) ---------------------------------------------- */

.steps {
  display: grid;
  gap: var(--space-4);
  counter-reset: step;
  position: relative;
}

.step {
  position: relative;
  padding-left: var(--space-6);
  counter-increment: step;
}

.step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.step::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 40px;
  bottom: calc(var(--space-4) * -1 + 4px);
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--color-border),
    var(--color-border) 60%,
    transparent
  );
}

.step:last-child::after {
  display: none;
}

.step__title {
  margin-bottom: 4px;
  font-size: var(--text-body-lg);
}

.step__text {
  color: var(--color-ink-dim);
  margin: 0;
}

@media (min-width: 900px) {
  .steps--horizontal {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
  }

  .steps--horizontal .step {
    padding-left: 0;
    padding-top: var(--space-6);
  }

  .steps--horizontal .step::after {
    left: 40px;
    right: calc(var(--space-3) * -1);
    top: 15px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(
      to right,
      var(--color-border),
      var(--color-border) 60%,
      transparent
    );
  }
}

/* Browser chrome frame --------------------------------------------------- */

.browser-frame {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.browser-frame__bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px var(--space-2);
  background-color: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}

.browser-frame__dots {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.browser-frame__dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-border);
}

.browser-frame__url {
  flex: 1;
  padding: 3px var(--space-1);
  border-radius: 6px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-dim);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-frame__body {
  padding: var(--space-3);
}

/* Accordion -------------------------------------------------------------- */

.accordion {
  border-top: 1px solid var(--color-border);
}

.accordion__item {
  border-bottom: 1px solid var(--color-border);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) 0;
  background: transparent;
  border: 0;
  font-family: var(--font-heading);
  font-size: var(--text-body-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  text-align: left;
  cursor: pointer;
}

.accordion__trigger:hover {
  color: var(--color-primary);
}

.accordion__icon {
  position: relative;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 2px;
  border-radius: 1px;
  background-color: currentColor;
  transform: translate(-50%, -50%);
  transition: transform var(--duration-base) var(--ease-out);
}

.accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.accordion__panel {
  padding-bottom: var(--space-3);
  color: var(--color-ink-dim);
  max-width: 68ch;
}

.accordion__panel[hidden] {
  display: none;
}

/* Checklist -------------------------------------------------------------- */

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.checklist li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
  color: var(--color-ink-dim);
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
}

.checklist strong {
  color: var(--color-ink);
  font-weight: 500;
}

/* Breadcrumb ------------------------------------------------------------- */

.breadcrumb {
  padding-top: var(--space-3);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--text-caption);
  color: var(--color-ink-dim);
}

.breadcrumb li {
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-ink-dim);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Page hero (interior pages) --------------------------------------------- */

.page-hero {
  padding-block: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
}

@media (min-width: 1024px) {
  .page-hero {
    padding-block: var(--space-8) var(--space-12);
  }
}

.page-hero__inner {
  max-width: 760px;
}

.page-hero h1 {
  margin-bottom: var(--space-3);
}

/* Note / callout --------------------------------------------------------- */

.note {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
  font-size: 0.9375rem;
  color: var(--color-ink-dim);
}

.note svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

/* Pricing card ----------------------------------------------------------- */

.price-card {
  padding-top: var(--space-4);
}

.price-card__badge {
  position: absolute;
  top: calc(var(--space-2) * -1);
  left: var(--space-4);
  background-color: var(--color-primary-solid);
  color: var(--color-on-primary);
}

.price-card__name {
  margin-bottom: var(--space-2);
  font-size: var(--text-body-lg);
}

.price-card__price {
  margin-bottom: 2px;
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.price-card__unit {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-ink-dim);
}

.price-card__term {
  margin-bottom: var(--space-3);
  font-size: var(--text-caption);
  color: var(--color-ink-dim);
}

.price-card--featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}

/* Footer address --------------------------------------------------------- */

.site-footer__address {
  margin-top: var(--space-2);
  font-style: normal;
  font-size: var(--text-caption);
  line-height: 1.7;
  color: var(--color-ink-dim);
}

.site-footer__address a {
  color: var(--color-ink-dim);
  text-decoration: none;
}

.site-footer__address a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Illustration wrapper --------------------------------------------------- */

.illustration {
  display: block;
  width: 100%;
  height: auto;
  color: var(--color-primary);
}

/* CSS custom properties do not resolve inside SVG presentation attributes,
   so illustration labels get their font from here instead. */
.illustration text {
  font-family: var(--font-mono);
}