/**
 * Taveronotebook — mobile-first styles
 * Paths use Linux-style forward slashes in theme assets.
 */

:root {
  --tn-blue: #0057a8;
  --tn-blue-dark: #003e78;
  --tn-blue-light: #e8f2fb;
  --tn-steel: #4a5a6a;
  --tn-ink: #1a2330;
  --tn-muted: #5c6b7a;
  --tn-line: #d5dee7;
  --tn-bg: #f3f6f9;
  --tn-white: #ffffff;
  --tn-accent: #00a3e0;
  --tn-radius: 4px;
  --tn-shadow: 0 8px 24px rgba(0, 40, 80, 0.12);
  --tn-font: "Source Sans 3", "Segoe UI", sans-serif;
  --tn-display: "IBM Plex Sans", "Source Sans 3", sans-serif;
  --tn-container: 1120px;
  --tn-header-offset: 0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--tn-font);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--tn-ink);
  background: var(--tn-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--tn-blue);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--tn-blue-dark);
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: var(--tn-display);
  line-height: 1.2;
  margin: 0 0 0.6em;
  color: var(--tn-ink);
}

p {
  margin: 0 0 1em;
}

.container {
  width: min(100% - 1.5rem, var(--tn-container));
  margin-inline: auto;
}

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

.skip-link:focus {
  clip: auto;
  clip-path: none;
  height: auto;
  width: auto;
  z-index: 100000;
  background: var(--tn-white);
  padding: 0.75rem 1rem;
  left: 0.5rem;
  top: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  border-radius: var(--tn-radius);
  font-family: var(--tn-display);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--tn-blue);
  color: var(--tn-white);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--tn-blue-dark);
  color: var(--tn-white);
}

.btn--outline {
  background: transparent;
  border-color: var(--tn-blue);
  color: var(--tn-blue);
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background: var(--tn-blue);
  color: var(--tn-white);
}

.text-link {
  color: var(--tn-blue);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Header */
.site-header {
  background: var(--tn-white);
  border-bottom: 1px solid var(--tn-line);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.top-bar {
  background: var(--tn-blue-dark);
  color: var(--tn-white);
  font-size: 0.875rem;
}

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
  gap: 1rem;
}

.top-bar a,
.resources-dropdown summary {
  color: var(--tn-white);
  cursor: pointer;
  list-style: none;
}

.resources-dropdown summary::-webkit-details-marker {
  display: none;
}

.resources-dropdown {
  position: relative;
}

.resources-menu {
  position: absolute;
  left: 0;
  top: 100%;
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  background: var(--tn-white);
  color: var(--tn-ink);
  min-width: 240px;
  box-shadow: var(--tn-shadow);
  z-index: 20;
}

.resources-menu a {
  display: block;
  padding: 0.55rem 1rem;
  color: var(--tn-ink);
}

.resources-menu a:hover {
  background: var(--tn-blue-light);
  text-decoration: none;
}

.header-main__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "brand actions"
    "search search";
  gap: 0.75rem 1rem;
  padding: 0.85rem 0;
  align-items: center;
}

.site-branding {
  grid-area: brand;
}

.site-title {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--tn-blue-dark);
  font-family: var(--tn-display);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}

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

.site-title__mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 6px;
  background: linear-gradient(145deg, var(--tn-blue), var(--tn-accent));
  color: var(--tn-white);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.custom-logo-link img {
  max-height: 48px;
  width: auto;
}

.header-search {
  grid-area: search;
  display: flex;
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  overflow: hidden;
  background: var(--tn-white);
}

.header-search input {
  flex: 1;
  border: 0;
  padding: 0.7rem 0.85rem;
  font: inherit;
  min-width: 0;
}

.header-search input:focus {
  outline: none;
}

.header-search__btn {
  border: 0;
  background: var(--tn-blue);
  color: var(--tn-white);
  padding: 0 0.9rem;
  cursor: pointer;
}

.header-actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.header-actions__link {
  display: none;
  font-weight: 600;
  color: var(--tn-blue-dark);
  text-decoration: none;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  background: var(--tn-white);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--tn-ink);
  position: relative;
  transition: transform 0.2s ease;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.primary-nav {
  display: none;
  background: var(--tn-blue);
}

.primary-nav.is-open {
  display: block;
}

.primary-menu {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
}

.primary-menu > .menu-item > a {
  display: block;
  padding: 0.85rem 0;
  color: var(--tn-white);
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  text-decoration: none;
}

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

.service-bar {
  background: var(--tn-blue-light);
  border-top: 1px solid var(--tn-line);
  font-size: 0.875rem;
}

.service-bar__inner {
  display: grid;
  gap: 0.35rem;
  padding: 0.65rem 0;
}

.service-bar p {
  margin: 0;
}

.service-bar a {
  font-weight: 700;
  white-space: nowrap;
}

/* Hero carousel */
.hero-carousel {
  position: relative;
  background: #0b1c2c;
  color: var(--tn-white);
  overflow: hidden;
}

.hero-slide {
  position: relative;
  min-height: clamp(360px, 70vw, 520px);
  display: grid;
  align-items: end;
}

.hero-slide[hidden] {
  display: none;
}

.hero-slide__media {
  position: absolute;
  inset: 0;
}

.hero-slide__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: tn-kenburns 12s ease-out forwards;
}

.hero-slide__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 24, 40, 0.25) 0%, rgba(8, 24, 40, 0.78) 70%, rgba(8, 24, 40, 0.92) 100%);
}

.hero-slide__content {
  position: relative;
  z-index: 1;
  padding: 2rem 0 4.5rem;
  max-width: 36rem;
  animation: tn-fade-up 0.55s ease both;
}

.hero-slide__title {
  color: var(--tn-white);
  font-size: clamp(1.75rem, 6vw, 2.75rem);
  margin-bottom: 0.5rem;
}

.hero-slide__text {
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.hero-carousel__controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  z-index: 2;
}

.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.9);
  color: var(--tn-blue-dark);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

.carousel-dots {
  display: flex;
  gap: 0.4rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  padding: 0;
}

.carousel-dot.is-active {
  background: var(--tn-white);
  transform: scale(1.15);
}

@keyframes tn-fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes tn-kenburns {
  from { transform: scale(1); }
  to { transform: scale(1.06); }
}

/* Discover cards */
.discover-grid,
.resources-section {
  padding: 2.5rem 0;
}

.section-title {
  font-size: clamp(1.4rem, 4vw, 1.85rem);
  margin-bottom: 1.25rem;
}

.discover-grid__cards {
  display: grid;
  gap: 1rem;
}

.discover-card {
  background: var(--tn-white);
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.discover-card:hover {
  box-shadow: var(--tn-shadow);
  transform: translateY(-3px);
}

.discover-card__link {
  display: block;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.discover-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #dbe5ef;
}

.discover-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.discover-card:hover .discover-card__img {
  transform: scale(1.04);
}

.discover-card__body {
  padding: 1.1rem 1.15rem 1.35rem;
}

.discover-card__body h3 {
  margin-bottom: 0.4rem;
  font-size: 1.2rem;
}

.discover-card__body p {
  color: var(--tn-muted);
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
}

/* Resources */
.resources-list {
  display: grid;
  gap: 1.25rem;
}

.resource-row {
  display: grid;
  gap: 1rem;
  background: var(--tn-white);
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  overflow: hidden;
}

.resource-row__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.resource-row__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.resource-row__body {
  padding: 0 1.15rem 1.25rem;
}

.resource-row__body h3 {
  font-size: 1.25rem;
}

.resource-row__body p {
  color: var(--tn-muted);
}

/* Aftermarket band */
.aftermarket-band {
  position: relative;
  color: var(--tn-white);
  min-height: 360px;
  display: grid;
  align-items: center;
}

.aftermarket-band__media {
  position: absolute;
  inset: 0;
}

.aftermarket-band__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.aftermarket-band__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 40, 80, 0.88) 0%, rgba(0, 40, 80, 0.55) 100%);
}

.aftermarket-band__content {
  position: relative;
  z-index: 1;
  padding: 2.5rem 0;
  max-width: 40rem;
}

.aftermarket-band__content h2 {
  color: var(--tn-white);
}

.aftermarket-band__content p {
  color: rgba(255, 255, 255, 0.92);
}

/* Content pages */
.content-layout {
  display: grid;
  gap: 1.5rem;
  padding: 1.75rem 0 2.5rem;
}

.content-area {
  background: var(--tn-white);
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  padding: 1.25rem;
}

.entry-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
}

.entry-meta,
.archive-description {
  color: var(--tn-muted);
  font-size: 0.9rem;
}

.entry-thumbnail {
  margin: 1rem 0;
}

.entry-content > *:first-child {
  margin-top: 0;
}

.posts-list {
  display: grid;
  gap: 1.25rem;
}

.entry--card {
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--tn-line);
}

.entry-card__thumb img {
  width: 100%;
  border-radius: var(--tn-radius);
  margin-bottom: 0.75rem;
}

.sidebar .widget {
  background: var(--tn-white);
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  padding: 1rem;
  margin-bottom: 1rem;
}

.widget-title {
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}

.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.search-form label {
  flex: 1 1 200px;
}

.search-form .search-field {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  font: inherit;
}

.pagination,
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.page-numbers,
.nav-previous a,
.nav-next a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
  background: var(--tn-white);
  text-decoration: none;
}

/* Friend links — always at absolute page bottom */
.friend-links {
  background: #e9eef3;
  border-top: 1px solid var(--tn-line);
  padding: 1rem 0 1.25rem;
}

.friend-links__title {
  display: none;
}

.friend-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.friend-links__list a {
  color: var(--tn-blue);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background: var(--tn-blue-dark);
  color: rgba(255, 255, 255, 0.9);
  padding-top: 2rem;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
}

.footer-tagline {
  font-family: var(--tn-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--tn-white);
  margin-bottom: 0.5rem;
}

.footer-contact,
.footer-menu a,
.social-links a {
  color: rgba(255, 255, 255, 0.92);
}

.footer-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 1rem 0 1.25rem;
}

.footer-bottom__inner {
  display: grid;
  gap: 0.75rem;
}

.copyright {
  margin: 0;
  font-size: 0.875rem;
}

.social-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.875rem;
}

.footer-widgets {
  display: grid;
  gap: 1rem;
}

.footer-col .widget-title {
  color: var(--tn-white);
}

/* Tablet+ */
@media (min-width: 720px) {
  .header-main__inner {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "brand search actions";
  }

  .header-actions__link {
    display: inline;
  }

  .service-bar__inner {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .discover-grid__cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .resource-row {
    grid-template-columns: 280px 1fr;
    align-items: center;
  }

  .resource-row__media {
    aspect-ratio: 4 / 3;
    height: 100%;
  }

  .resource-row__body {
    padding: 1.25rem 1.5rem;
  }

  .content-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
  }

  .no-sidebar .content-layout {
    grid-template-columns: 1fr;
  }

  .footer-bottom__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

/* Desktop */
@media (min-width: 980px) {
  .nav-toggle {
    display: none;
  }

  .primary-nav {
    display: block;
  }

  .primary-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 0 1.5rem;
    padding: 0;
  }

  .primary-menu > .menu-item > a {
    border: 0;
    padding: 0.85rem 0;
    font-size: 0.95rem;
  }

  .hero-slide {
    min-height: 480px;
    align-items: center;
  }

  .hero-slide__content {
    padding: 3rem 0;
  }

  .aftermarket-band {
    min-height: 420px;
  }

  .footer-grid {
    grid-template-columns: 1.2fr 1.5fr 1fr;
    align-items: start;
  }

  .footer-widgets {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}