/* ============================================================
   TAE Components
   Buttons, cards, navigation, tabs, forms, badges, feeds
   ============================================================ */


/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--tae-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  padding: 0.625em 1.5em;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn--primary {
  background-color: var(--tae-blue-deep);
  color: var(--tae-white);
  border-color: var(--tae-blue-deep);
}

.btn--primary:hover {
  background-color: #003a8c;
  border-color: #003a8c;
  color: var(--tae-white);
  text-decoration: none;
}

.btn--secondary {
  background-color: transparent;
  color: var(--tae-blue-deep);
  border-color: var(--tae-blue-deep);
}

.btn--secondary:hover {
  background-color: var(--tae-blue-deep);
  color: var(--tae-white);
  text-decoration: none;
}

.btn--tertiary {
  background-color: transparent;
  color: var(--tae-blue);
  border-color: transparent;
  padding-left: 0;
  padding-right: 0;
}

.btn--tertiary:hover {
  color: var(--tae-blue-deep);
  text-decoration: underline;
}


/* --- Tab Switcher --- */

.tab-switcher {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--tae-grey-border);
  margin-bottom: var(--tae-space-8);
}

.tab-switcher__tab {
  font-family: var(--tae-font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--tae-grey-mid);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: var(--tae-space-3) var(--tae-space-6);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  bottom: -1px;
}

.tab-switcher__tab:hover {
  color: var(--tae-black);
}

.tab-switcher__tab--active {
  color: var(--tae-black);
  border-bottom-color: var(--tae-blue);
}

.tab-content {
  display: none;
}

.tab-content--active {
  display: block;
}


/* --- Site Header --- */

.site-header {
  background: var(--tae-white);
  border-bottom: 1px solid var(--tae-grey-border);
  padding: var(--tae-space-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo img {
  height: 36px;
  width: auto;
}

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

.site-nav__link {
  font-family: var(--tae-font-body);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--tae-black);
  text-decoration: none;
  padding: var(--tae-space-2) 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.site-nav__link:hover {
  color: var(--tae-blue);
  text-decoration: none;
}

.site-nav__link--active {
  border-bottom-color: var(--tae-blue);
  color: var(--tae-blue);
}

.site-nav__cta {
  margin-left: var(--tae-space-2);
}

/* Mobile nav toggle */
.site-nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--tae-space-2);
}

.site-nav__toggle svg {
  width: 24px;
  height: 24px;
  stroke: var(--tae-black);
}


/* --- Post Cards (Grid) --- */

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--tae-white);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.2s ease;
  text-decoration: none;
  color: var(--tae-black);
}

.post-card:hover {
  background: var(--tae-grey-light);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--tae-black);
}

.post-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px 8px 0 0;
}

.post-card__body {
  padding: var(--tae-space-4) 0;
}

.post-card__meta {
  font-size: 0.875rem;
  color: var(--tae-grey-mid);
  margin-bottom: var(--tae-space-2);
}

.post-card__meta span + span::before {
  content: ", ";
}

.post-card__title {
  font-family: var(--tae-font-heading);
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: var(--tae-space-2);
}

.post-card--large .post-card__title {
  font-size: clamp(1.2rem, 3vw, 1.3rem);
}

.post-card--standard .post-card__title {
  font-size: clamp(1rem, 2.5vw, 1.1rem);
}

.post-card__excerpt {
  font-size: 0.9375rem;
  color: var(--tae-black);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}


/* --- Feed Items (Aggregated News) --- */

.feed-item {
  display: flex;
  gap: var(--tae-space-6);
  padding: var(--tae-space-6) 0;
  border-bottom: 1px solid var(--tae-grey-border);
  text-decoration: none;
  color: var(--tae-black);
  transition: background 0.2s ease;
}

.feed-item:hover {
  background: var(--tae-grey-light);
  text-decoration: none;
  color: var(--tae-black);
}

.feed-item:last-child {
  border-bottom: none;
}

.feed-item__image {
  width: 120px;
  min-width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: 4px;
}

.feed-item__content {
  flex: 1;
  min-width: 0;
}

.feed-item__meta {
  font-size: 0.875rem;
  color: var(--tae-grey-mid);
  margin-bottom: var(--tae-space-1);
}

.feed-item__meta span + span::before {
  content: " | ";
}

.feed-item__title {
  font-family: var(--tae-font-heading);
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--tae-space-2);
}

.feed-item__excerpt {
  font-size: 0.875rem;
  color: var(--tae-black);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}


/* --- Section Callout (Premium / Deep Research) --- */

.callout {
  background: var(--tae-grey-light);
  border-radius: 8px;
  padding: var(--tae-space-8);
  margin: var(--tae-space-8) 0;
}

.callout--premium {
  border-left: 4px solid var(--tae-tier-3);
}

.callout--research {
  border-left: 4px solid var(--tae-tier-4);
}

.callout__label {
  font-family: var(--tae-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--tae-space-2);
}

.callout--premium .callout__label {
  color: var(--tae-tier-3);
}

.callout--research .callout__label {
  color: var(--tae-tier-4);
}

.callout__title {
  font-family: var(--tae-font-heading);
  font-size: clamp(1.4rem, 3.5vw, 1.6rem);
  font-weight: 400;
  margin-bottom: var(--tae-space-3);
}

.callout__text {
  font-size: 0.9375rem;
  color: var(--tae-black);
  margin-bottom: var(--tae-space-6);
  line-height: 1.5;
}


/* --- Tier Badge --- */

.tier-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 12px;
  border-radius: 20px;
  border: 1.5px solid currentColor;
}

.tier-badge--silver { color: var(--tae-tier-2); }
.tier-badge--gold { color: var(--tae-tier-3); }
.tier-badge--platinum { color: var(--tae-tier-4); }


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

.site-footer {
  background: var(--tae-black);
  color: var(--tae-white);
  padding: var(--tae-space-12) 0;
  margin-top: var(--tae-space-16);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.7);
}

.site-footer a:hover {
  color: var(--tae-white);
  text-decoration: none;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--tae-space-8);
}

.site-footer__brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  margin-top: var(--tae-space-4);
}

.site-footer__heading {
  font-family: var(--tae-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--tae-white);
  margin-bottom: var(--tae-space-4);
}

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

.site-footer__links li {
  margin-bottom: var(--tae-space-2);
}

.site-footer__links a {
  font-size: 0.875rem;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  margin-top: var(--tae-space-8);
  padding-top: var(--tae-space-6);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}


/* --- Section Headers --- */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--tae-space-6);
}

.section-header__title {
  font-family: var(--tae-font-heading);
  font-size: clamp(1.4rem, 3.5vw, 1.6rem);
  font-weight: 400;
  margin-bottom: 0;
}

.section-header__link {
  font-size: 0.875rem;
  font-weight: 600;
}