/* ==========================================================================
   Oplos Core — shared layout & structure.
   Visual identity (colours, fonts, radii, effects) comes from the active
   theme in static/css/themes/ via CSS custom properties. Never put a colour,
   font or shadow literal in this file — add a token and set it in the theme.
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3 {
  font-family: var(--font-heading, inherit);
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-heading, inherit);
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-link, inherit);
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

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

.container {
  width: min(1140px, 92%);
  margin-inline: auto;
}

/* --------------------------------------------------------------------------
   Header & primary navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading, inherit);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-heading);
}

.brand__logo {
  height: 1.35rem;
  width: auto;
  display: block;
}

.primary-nav__list {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.primary-nav__link {
  display: inline-block;
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius-sm, 6px);
  font-size: 0.95rem;
  color: var(--color-nav-text, var(--color-text));
}

.primary-nav__link:hover {
  color: var(--color-accent);
  background: var(--nav-hover-bg, transparent);
}

.caret {
  font-size: 0.7em;
  opacity: 0.7;
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 17rem;
  padding: 0.5rem;
  background: var(--dropdown-bg, var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md, 10px);
  box-shadow: var(--shadow-lg, 0 12px 32px rgba(0, 0, 0, 0.18));
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown__link {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm, 6px);
  font-size: 0.92rem;
  color: var(--color-text);
}

.dropdown__link:hover {
  background: var(--nav-hover-bg, rgba(0, 0, 0, 0.05));
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border-radius: var(--btn-radius, 8px);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn--primary {
  background: var(--btn-primary-bg, var(--color-accent));
  color: var(--color-accent-contrast, #fff);
  box-shadow: var(--btn-glow, none);
}

.btn--primary:hover {
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: var(--color-border-strong, var(--color-border));
  color: var(--color-heading);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--lg {
  padding: 0.9rem 2rem;
  font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section {
  padding: 4.5rem 0;
}

.section--alt {
  background: var(--color-surface-alt, var(--color-surface));
}

.section__head {
  max-width: 46rem;
  margin-bottom: 2.5rem;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.section__lede {
  color: var(--color-text-muted, inherit);
  font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  padding: 6rem 0 5rem;
  background: var(--hero-bg, transparent);
}

.hero__inner {
  max-width: 50rem;
}

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  margin-bottom: 1rem;
  background: var(--hero-title-fill, none);
  -webkit-background-clip: var(--hero-title-clip, border-box);
  background-clip: var(--hero-title-clip, border-box);
  -webkit-text-fill-color: var(--hero-title-text-fill, currentColor);
}

.hero__lede {
  font-size: 1.15rem;
  color: var(--color-text-muted, inherit);
  max-width: 40rem;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
}

.card-grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, 14px);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md, 0 8px 24px rgba(0, 0, 0, 0.08));
}

.card__icon {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-sm, 8px);
  margin-bottom: 0.6rem;
  background: var(--icon-bg, var(--color-accent));
  opacity: 0.9;
}

.card__title {
  font-size: 1.1rem;
}

.card__body {
  color: var(--color-text-muted, inherit);
  font-size: 0.95rem;
  flex-grow: 1;
}

.card__kicker {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.card__link {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Assistant showcase
   -------------------------------------------------------------------------- */
.assistants__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.assistants__item {
  margin: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, 14px);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.assistants__item:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md, 0 8px 24px rgba(0, 0, 0, 0.08));
}

.assistants__item img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm, 8px);
}

.assistants__item--wide {
  grid-column: 1 / -1;
}

.assistants__item--wide img {
  max-width: 56rem;
  margin: 0 auto;
}

.assistants__caption {
  color: var(--color-text-muted, inherit);
  font-size: 0.9rem;
  line-height: 1.5;
}

.assistants__caption strong {
  color: var(--color-heading);
}

.assistants__item--wide .assistants__caption {
  text-align: center;
}

.assistants__cta {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Pills / solutions
   -------------------------------------------------------------------------- */
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pill {
  padding: 0.55rem 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong, var(--color-border));
  background: var(--pill-bg, transparent);
  font-size: 0.95rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */
.about__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.check-list li {
  padding-left: 1.6rem;
  position: relative;
  margin-bottom: 0.5rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.check-list {
  margin-bottom: 1.5rem;
}

.about__stats {
  display: grid;
  gap: 1rem;
}

.stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md, 10px);
  padding: 1.1rem 1.4rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.stat__value {
  font-family: var(--font-heading, inherit);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat__label {
  color: var(--color-text-muted, inherit);
  font-size: 0.9rem;
}

/* --------------------------------------------------------------------------
   Contact CTA
   -------------------------------------------------------------------------- */
.cta {
  background: var(--cta-bg, var(--color-surface-alt, var(--color-surface)));
}

.cta__inner {
  text-align: center;
  max-width: 42rem;
}

.cta__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.cta__lede {
  color: var(--color-text-muted, inherit);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--footer-bg, var(--color-surface));
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0 1.5rem;
  font-size: 0.92rem;
}

/* Brand block, then one column per group in pages/navigation.py FOOTER_NAV.
   Update the repeat() count if a group is added or removed. */
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.site-footer__tagline {
  color: var(--color-text-muted, inherit);
  margin-top: 0.75rem;
  max-width: 16rem;
}

.site-footer__heading {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted, inherit);
  margin-bottom: 0.9rem;
}

.site-footer__list li {
  margin-bottom: 0.5rem;
}

.site-footer__list a {
  color: var(--color-text);
}

.site-footer__list a:hover {
  color: var(--color-accent);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
  color: var(--color-text-muted, inherit);
  font-size: 0.85rem;
}

.site-footer__bottom p {
  margin-bottom: 0.4rem;
}

.site-footer__bottom p:last-child {
  margin-bottom: 0;
}

.site-footer__legal {
  max-width: 60rem;
}

/* --------------------------------------------------------------------------
   Interior page hero (smaller than the landing hero)
   -------------------------------------------------------------------------- */
.page-hero {
  padding: 3.5rem 0 3rem;
  background: var(--hero-bg, transparent);
}

.page-hero__inner {
  max-width: 44rem;
}

.page-hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.page-hero__title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin-bottom: 0.75rem;
}

.page-hero__lede {
  font-size: 1.1rem;
  color: var(--color-text-muted, inherit);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Contact page
   -------------------------------------------------------------------------- */
.contact__inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact__aside {
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, 14px);
  padding: 1.4rem 1.5rem;
}

.panel__title {
  font-size: 1rem;
  margin-bottom: 0.6rem;
}

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

.steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.7rem;
  font-size: 0.95rem;
  color: var(--color-text-muted, inherit);
}

.steps li:last-child {
  margin-bottom: 0;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.05rem;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: var(--icon-bg, var(--color-surface-alt));
  color: var(--color-heading);
  font-size: 0.78rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.steps strong {
  color: var(--color-heading);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.field {
  margin-bottom: 1.15rem;
}

.field__label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-heading);
  margin-bottom: 0.4rem;
}

.field__input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong, var(--color-border));
  border-radius: var(--radius-sm, 8px);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field__input::placeholder {
  color: var(--color-text-muted, inherit);
  opacity: 0.75;
}

.field__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--focus-ring, rgba(0, 0, 0, 0.12));
}

textarea.field__input {
  resize: vertical;
  min-height: 8rem;
}

.field--error .field__input {
  border-color: var(--color-error, #b3261e);
}

.field__error {
  margin: 0.4rem 0 0;
  font-size: 0.88rem;
  color: var(--color-error, #b3261e);
}

/* The honeypot must be unreachable by people, including by keyboard, but must
   stay in the DOM so a bot fills it. display:none would make some bots skip it. */
.form__trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__note {
  margin: 1rem 0 0;
  font-size: 0.88rem;
  color: var(--color-text-muted, inherit);
}

/* --------------------------------------------------------------------------
   Long-form prose (legal pages, articles)
   -------------------------------------------------------------------------- */
.prose {
  max-width: 44rem;
}

.prose__meta {
  color: var(--color-text-muted, inherit);
  font-size: 0.9rem;
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.prose h2 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose h2:first-of-type {
  margin-top: 0;
}

.prose p,
.prose li {
  font-size: 1rem;
  line-height: 1.7;
}

.prose ul {
  list-style: disc;
  padding-left: 1.3rem;
  margin: 0 0 1em;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose strong {
  color: var(--color-heading);
  font-weight: 600;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* --------------------------------------------------------------------------
   Notices
   -------------------------------------------------------------------------- */
.notice {
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1.5rem;
}

.notice__title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.notice p:last-of-type {
  margin-bottom: 0;
}

.notice--success {
  border-left-color: var(--color-success, #1e7a4c);
}

.notice--error {
  border-left-color: var(--color-error, #b3261e);
}

.notice .btn {
  margin-top: 1rem;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .contact__inner {
    grid-template-columns: 1fr;
  }

  .site-header__inner {
    flex-wrap: wrap;
    padding: 0.75rem 0;
  }

  .site-header__cta {
    display: none;
  }

  .about__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .assistants__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}