/* ==========================================================================
   Global chrome — header, footer, nav, and small reusable atoms (buttons,
   enrollment badge). Homepage-specific section styling lives in
   sections.css (Phase 4).
   ========================================================================== */

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-base);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color var(--transition-fast) var(--ease-standard),
    color var(--transition-fast) var(--ease-standard);
}

.button--primary {
  background-color: var(--color-turquoise-dark);
  color: var(--color-white);
}

.button--primary:hover {
  background-color: var(--color-turquoise-darker);
  color: var(--color-white);
}

.button--text {
  padding: var(--space-2) var(--space-3);
  color: var(--color-text);
  font-weight: var(--font-weight-regular);
}

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

/* ---- Enrollment badge ------------------------------------------------------ */

.enrollment-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background-color: var(--color-turquoise-tint-25);
  color: var(--color-turquoise-darker);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.enrollment-badge--waiting-list {
  background-color: var(--color-gray-12);
  color: var(--color-gray-90);
}

/* ---- Site header ----------------------------------------------------------- */
/* Two bars: a thin utility strip (always visible, both breakpoints) above
   the main bar (logo, nav, CTA, mobile toggle). Splitting these apart
   keeps the main bar from having to fit 7 nav links + a badge + "Student
   Login" + a full CTA button all on one line — see docs/DEVELOPMENT.md. */

.site-header {
  position: relative;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.site-header__utility {
  background-color: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
}

.site-header__utility-inner {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding: var(--space-2) var(--content-padding-inline);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
  font-size: var(--text-sm);
}

.site-header__login {
  color: var(--color-text);
  text-decoration: none;
}

.site-header__login:hover {
  color: var(--color-link-hover);
}

.site-header__main-inner {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding: var(--space-4) var(--content-padding-inline);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__brand {
  flex-shrink: 0;
  line-height: 0;
}

.site-header__brand img {
  display: block;
  width: 150px;
  height: 68px;
}

.site-header__cta {
  flex-shrink: 0;
  margin-left: auto;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.site-header__toggle {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-heading);
  transition:
    transform var(--transition-fast) var(--ease-standard),
    opacity var(--transition-fast) var(--ease-standard);
}

.site-header__toggle-icon::before {
  transform: translateY(-6px);
}

.site-header__toggle-icon::after {
  transform: translateY(4px);
}

.site-header.is-nav-open .site-header__toggle-icon {
  background-color: transparent;
}

.site-header.is-nav-open .site-header__toggle-icon::before {
  transform: translateY(0) rotate(45deg);
}

.site-header.is-nav-open .site-header__toggle-icon::after {
  transform: translateY(0) rotate(-45deg);
}

.site-nav {
  display: none;
}

.site-header.is-nav-open .site-nav {
  display: block;
  position: absolute;
  inset-inline: 0;
  top: 100%;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--content-padding-inline);
}

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

.site-nav__list a {
  color: var(--color-heading);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

@media (min-width: 768px) {
  .site-header__toggle {
    display: none;
  }

  .site-header__cta {
    order: 3;
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-base);
  }

  .site-nav {
    display: block;
    order: 2;
    margin-inline: auto;
  }

  .site-nav__list {
    flex-direction: row;
    gap: var(--space-6);
  }
}

/* ---- Site footer ------------------------------------------------------------ */

.site-footer {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-9);
}

.site-footer__inner {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding: var(--space-8) var(--content-padding-inline) var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6) var(--space-8);
}

.site-footer__brand {
  flex: 1 1 240px;
}

.site-footer__brand img {
  display: block;
  width: 130px;
  height: 59px;
}

.site-footer__tagline {
  margin-top: var(--space-3);
  color: var(--color-gray-90);
  max-width: 32ch;
}

.site-footer__columns {
  flex: 1 1 200px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.site-footer__nav-list,
.site-footer__utility {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.site-footer__nav-list a,
.site-footer__utility a {
  color: var(--color-text);
  text-decoration: none;
}

.site-footer__cta {
  flex: 1 1 240px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--content-padding-inline);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-gray-90);
}

/* ==========================================================================
   Generic content shell — used on the homepage (Phase 4) and every
   interior page since it's a genuinely global pattern, not homepage-only.
   ========================================================================== */

.section {
  padding: var(--space-9) var(--content-padding-inline);
}

.section--alt {
  background-color: var(--color-bg-subtle);
}

.section--emphasis {
  background-color: var(--color-turquoise-tint-10);
  text-align: center;
}

.section__inner {
  max-width: var(--content-max-width);
  margin-inline: auto;
}

.section--narrow .section__inner {
  max-width: var(--content-max-width-narrow);
}

.section--emphasis .section__inner {
  max-width: var(--content-max-width-narrow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.section__heading {
  max-width: 24ch;
}

.section--narrow .section__heading,
.section--emphasis .section__heading {
  max-width: none;
}

.section__lede {
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  color: var(--color-gray-90);
  max-width: 60ch;
}

.section__empty-state {
  margin-top: var(--space-5);
  padding: var(--space-5);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-gray-90);
}

.section > .section__inner > .button,
.section__inner > a.button {
  margin-top: var(--space-6);
}

.section__inner--split {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

.section__inner--split > div:first-child {
  order: 1;
}

.section__inner--split.section__inner--reverse > div:first-child {
  order: 2;
}

@media (min-width: 768px) {
  .section__inner--split {
    grid-template-columns: 1fr 1fr;
  }

  .section__inner--split > div:first-child {
    order: initial;
  }

  .section__inner--split.section__inner--reverse > div:first-child {
    order: 2;
  }
}

/* ---- Photo placeholder ------------------------------------------------------ */

.photo-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  text-align: center;
  background-color: var(--color-gray-12);
  border: 1px dashed var(--color-gray-45);
  border-radius: var(--radius-md);
  color: var(--color-gray-90);
  font-size: var(--text-sm);
}

.photo-placeholder--wide {
  aspect-ratio: 16 / 9;
}

.photo-placeholder--portrait {
  aspect-ratio: 4 / 5;
}

.photo-placeholder--square {
  aspect-ratio: 1 / 1;
}

.photo-grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .photo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .photo-grid > *:first-child {
    grid-column: 1 / -1;
  }
}

/* ---- Card grid (lesson formats, tuition) --------------------------------------- */

.card-grid {
  margin-top: var(--space-7);
  display: grid;
  gap: var(--space-5);
}

.card {
  padding: var(--space-6);
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card__title {
  font-size: var(--text-xl);
}

.card__price {
  margin-top: var(--space-2);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-turquoise-darker);
}

.card__price span {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-gray-90);
}

.card__meta {
  margin-top: var(--space-4);
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-gray-90);
}

.card__meta li {
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-full);
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---- Accordion (FAQ) ------------------------------------------------------------ */

.accordion {
  margin-top: var(--space-7);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.accordion__item {
  padding: var(--space-4) var(--space-5);
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
}

.accordion__question {
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  color: var(--color-heading);
}

.accordion__answer {
  margin-top: var(--space-3);
  color: var(--color-gray-90);
}

/* ---- Page header (About/Lessons/Our Approach/FAQ/Contact) ---------------------- */

.page-header {
  padding: var(--space-8) var(--content-padding-inline) var(--space-6);
  text-align: center;
}

.page-header__inner {
  max-width: var(--content-max-width-narrow);
  margin-inline: auto;
}

.page-header__title {
  font-size: var(--text-5xl);
}

.page-header__lede {
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  color: var(--color-gray-90);
}

/* ---- Content section (repeatable heading+body block on long-form pages) -------- */

.content-section {
  padding: var(--space-7) var(--content-padding-inline);
  border-top: 1px solid var(--color-border);
}

.content-section:first-of-type {
  border-top: none;
}

.content-section__inner {
  max-width: var(--content-max-width-narrow);
  margin-inline: auto;
}

.content-section__inner--wide {
  max-width: var(--content-max-width);
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

.content-section__inner--full {
  max-width: var(--content-max-width);
}

@media (min-width: 768px) {
  .content-section__inner--wide {
    grid-template-columns: 1fr 1fr;
  }
}

.content-section__heading {
  font-size: var(--text-2xl);
}

.content-section__body {
  margin-top: var(--space-3);
  color: var(--color-gray-90);
}

.content-section__body > * + * {
  margin-top: var(--space-3);
}