@layer base, layout, components, utilities, pages;

@layer components {
  .section__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: clamp(18px, 4vw, 32px);
    flex-wrap: wrap;
    margin-bottom: clamp(20px, 4vw, 36px);
  }

  .section__title {
    margin: 0;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: clamp(2.2rem, 3.6vw, 3.1rem);
    line-height: 1.12;
    letter-spacing: 0.01em;
    color: var(--color-text-strong);
  }

  .section__lead,
  .section__description {
    margin: 0;
    font-size: clamp(1rem, 2vw, 1.1rem);
    line-height: 1.9;
    color: var(--color-text-subtle);
    max-width: 72ch;
  }

  .section__actions {
    display: inline-flex;
    gap: 0.75rem;
    align-items: center;
  }

  .section__footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
  }

  .section__more {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 1.2rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(37, 99, 235, 0.85);
    background: rgba(96, 165, 250, 0.12);
    text-decoration: none;
    transition: background 0.2s ease, transform 0.2s ease;
  }

  .section__more::after {
    content: '\203A';
    font-size: 1rem;
  }

  .section__more:hover,
  .section__more:focus-visible {
    background: rgba(96, 165, 250, 0.2);
    color: #1d4ed8;
    transform: translateX(2px);
  }

  .site-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
  }

  .btn {
    --btn-radius: var(--radius-pill);
    --btn-padding-y: 0.75rem;
    --btn-padding-x: 1.75rem;
    --btn-bg: var(--color-surface);
    --btn-border: transparent;
    --btn-color: var(--color-primary);

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border-radius: var(--btn-radius);
    border: 1px solid var(--btn-border);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.02em;
    cursor: pointer;
    background: var(--btn-bg);
    color: var(--btn-color);
    transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform 0.2s ease;
  }

  .btn:focus-visible {
    outline: 3px solid rgba(14, 165, 233, 0.25);
    outline-offset: 2px;
  }

  .btn--primary {
    --btn-bg: linear-gradient(110deg, var(--color-primary-dark) 0%, var(--expo-blue) 100%);
    --btn-border: transparent;
    --btn-color: #ffffff;
    box-shadow: 0 12px 24px rgba(0, 96, 255, 0.28);
  }

  .btn--primary:hover,
  .btn--primary:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 18px 30px rgba(0, 96, 255, 0.32);
  }

  .btn--ghost {
    --btn-bg: transparent;
    --btn-border: rgba(14, 165, 233, 0.6);
    --btn-color: rgba(14, 165, 233, 0.9);
  }

  .btn--ghost:hover,
  .btn--ghost:focus-visible {
    border-color: rgba(14, 165, 233, 0.85);
    color: #0284c7;
    background: rgba(14, 165, 233, 0.08);
  }

  .hero {
    --hero-padding-y: clamp(32px, 6vw, 60px);
    padding: var(--hero-padding-y) 0;
    background: #f7fafc;
  }

  .hero > .container {
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .hero h1 {
    margin: 0 0 clamp(8px, 2vw, 12px);
  }

  .hero__actions .btn--ghost {
    border-color: rgba(59, 130, 246, 0.5);
    color: rgba(37, 99, 235, 0.95);
    background: rgba(96, 165, 250, 0.1);
  }

  .hero__actions .btn--ghost:hover,
  .hero__actions .btn--ghost:focus-visible {
    border-color: rgba(59, 130, 246, 0.75);
    color: #1d4ed8;
    background: rgba(96, 165, 250, 0.18);
  }

  .term-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 clamp(16px, 3vw, 28px);
    padding: 0;
    list-style: none;
  }

  .term-badges--inline {
    margin-bottom: clamp(12px, 2vw, 20px);
  }

  .term-badges__item {
    margin: 0;
  }

  .term-badges__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(11, 95, 255, 0.28);
    background: rgba(11, 95, 255, 0.08);
    color: rgba(11, 17, 45, 0.86);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  }

  .term-badges__link:hover,
  .term-badges__link:focus-visible {
    border-color: rgba(8, 70, 204, 0.8);
    background: rgba(11, 95, 255, 0.18);
    color: var(--color-primary-dark);
    transform: translateY(-1px);
  }

  @media (min-width: 900px) {
    .hero {
      min-height: clamp(280px, 48vh, 360px);
    }

    .hero h1 {
      font-size: clamp(32px, 4vw, 44px);
      line-height: 1.2;
    }

    .hero p {
      font-size: clamp(1rem, 1.6vw, 1.15rem);
      color: rgba(55, 65, 81, 0.9);
    }
  }

  .posts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
  }

  .post-card {
    border: 1px solid #eee;
    padding: 16px;
    border-radius: 0;
    background: #fff;
  }

  .post-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid #e6e6e6;
  }

  .post-list__item {
    margin: 0;
    border-bottom: 1px solid #e6e6e6;
  }

  .post-list__link {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 0;
    color: inherit;
  }

  .post-list__date {
    flex: 0 0 auto;
    min-width: 8ch;
    color: #666;
    font-size: 14px;
    line-height: 1.8;
  }

  .post-list__title {
    flex: 1 1 auto;
    font-weight: 600;
    line-height: 1.5;
  }

  .post-list__link:hover .post-list__title {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
  }

  /* Card deck */
  .card-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(24px, 4vw, 32px);
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .card-list__item {
    display: flex;
  }

  .card-list__item > .card,
  .card-list__item > a.card {
    width: 100%;
  }

  @media (max-width: 1024px) {
    .card-list {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .card-list__item {
      grid-column: auto;
    }
  }

  @media (max-width: 680px) {
    .card-list {
      grid-template-columns: 1fr;
      gap: clamp(18px, 6vw, 26px);
    }

    .card-list__item {
      grid-column: auto;
    }
  }

  .card {
    position: relative;
    display: flex;
    align-items: flex-end;
    min-height: clamp(320px, 36vw, 440px);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #0f172a;
    color: var(--color-hero-text);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
  }

  .card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.02) 0%, rgba(15, 23, 42, 0.7) 55%, rgba(15, 23, 42, 0.9) 100%);
    z-index: 1;
    transition: opacity 0.35s ease;
  }

  .card::after {
    content: '\2192';
    position: absolute;
    bottom: clamp(20px, 3.2vw, 28px);
    right: clamp(20px, 3.2vw, 28px);
    width: clamp(40px, 5vw, 52px);
    height: clamp(40px, 5vw, 52px);
    display: grid;
    place-items: center;
    border-radius: 14px;
    border: 1px solid rgba(248, 250, 252, 0.5);
    color: rgba(248, 250, 252, 0.85);
    background: rgba(15, 23, 42, 0.35);
    backdrop-filter: blur(6px);
    z-index: 2;
    transition: transform 0.35s ease, background 0.35s ease, border-color 0.35s ease, color 0.35s ease;
    pointer-events: none;
  }

  .card:hover,
  .card:focus-visible {
    transform: translateY(-6px);
    box-shadow: 0 32px 70px rgba(15, 23, 42, 0.38);
  }

  .card:hover::before,
  .card:focus-visible::before {
    opacity: 0.95;
  }

  .card:hover::after,
  .card:focus-visible::after {
    background: rgba(37, 99, 235, 0.9);
    color: var(--color-hero-text);
    border-color: transparent;
    transform: translate(-2px, -2px);
  }

  .card__media {
    position: absolute;
    inset: 0;
    margin: 0;
    z-index: 0;
    background: #0f172a;
  }

  .card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.9) contrast(0.96);
    transition: transform 0.6s ease;
  }

  .card:hover .card__media img,
  .card:focus-visible .card__media img {
    transform: scale(1.04);
  }

  .card__media.is-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.75);
  }

  .card__media.is-logo img {
    width: min(60%, 220px);
    height: auto;
    object-fit: contain;
  }

  .card__body {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 100%;
    padding: clamp(24px, 4vw, 36px);
    padding-right: clamp(80px, 8vw, 120px);
    display: flex;
    flex-direction: column;
    gap: clamp(12px, 3vw, 20px);
  }

  .card__date {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-weight: 600;
    color: rgba(148, 163, 184, 0.85);
  }

  .card__title {
    margin: 0;
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.45;
    color: var(--color-hero-text);
    text-shadow: 0 4px 12px rgba(15, 23, 42, 0.65);
  }

  .card__excerpt {
    margin: 0;
    color: rgba(226, 232, 240, 0.88);
    font-size: clamp(0.9rem, 1.6vw, 1rem);
    line-height: 1.7;
  }

  .card__meta {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin: 0;
    font-size: 0.82rem;
    letter-spacing: 0.02em;
  }

  .card__meta div {
    display: flex;
    gap: 0.5rem;
    align-items: baseline;
    background: transparent;
    border: none;
    padding: 0;
  }

  .card__meta dt {
    min-width: 4.8em;
    margin: 0;
    font-weight: 600;
    color: rgba(148, 163, 184, 0.85);
  }

  .card__meta dd {
    margin: 0;
    color: rgba(248, 250, 252, 0.92);
  }

  .card--equipment::before,
  .card--equipment::after {
    display: none;
  }

  .card--equipment {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    min-height: auto;
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(148, 163, 184, 0.25);
    overflow: hidden;
  }

  .card--equipment .card__media {
    position: relative;
    inset: auto;
    width: 100%;
    aspect-ratio: 4 / 3;
    background: var(--color-surface-muted);
    border-radius: 0;
    overflow: hidden;
  }

  .card--equipment .card__media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: none;
    transform: none !important;
  }

  .card--equipment .card__body {
    position: static;
    padding: clamp(18px, 3vw, 28px);
    gap: 0.6rem;
    color: inherit;
    background: var(--color-surface);
  }

  .card--equipment .card__title {
    color: inherit;
    text-shadow: none;
    font-size: clamp(1.05rem, 1.9vw, 1.3rem);
  }

  .card--equipment .card__excerpt {
    color: rgba(55, 65, 81, 0.78);
  }

  @media (max-width: 768px) {
    .card {
      min-height: clamp(220px, 48vw, 300px);
    }

    .card__body {
      max-width: 100%;
      padding-right: clamp(70px, 18vw, 96px);
    }

    .section .card-list {
      width: 100%;
      margin-left: 0;
      margin-right: 0;
    }
  }

  @media (max-width: 560px) {
    .card {
      min-height: 220px;
    }

    .card::after {
      width: 42px;
      height: 42px;
      bottom: 18px;
      right: 18px;
    }

    .card__body {
      padding: 24px 64px 24px 24px;
      gap: 12px;
    }
  }

  .section--share {
    margin: 32px 0;
  }

  .share-tools {
    padding: 24px;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    background: #f8fbff;
    display: grid;
    gap: 16px;
  }

  .share-tools__label {
    margin: 0;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-sub);
  }

  .share-tools__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }

  .share-tools__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-primary);
    background: #fff;
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  }

  .share-tools__btn:focus-visible {
    outline: 3px solid rgba(11, 95, 255, 0.2);
    outline-offset: 2px;
  }

  .share-tools__btn:hover,
  .share-tools__btn:focus-visible {
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
  }

  .share-tools__btn--x {
    background: var(--color-primary);
    color: #fff;
  }

  .share-tools__btn--x:hover,
  .share-tools__btn--x:focus-visible {
    background: var(--color-primary-dark);
    color: #fff;
  }

  .share-tools__feedback {
    min-height: 1.4em;
    margin: 0;
    font-size: 0.85rem;
    color: #2563eb;
  }

  .share-tools__feedback.is-error {
    color: #dc2626;
  }

  @media (max-width: 599px) {
    .share-tools {
      padding: 20px;
    }

    .share-tools__actions {
      flex-direction: column;
      align-items: stretch;
    }

    .share-tools__btn {
      width: 100%;
    }
  }

  .im-breadcrumbs {
    margin: 12px 0 16px;
    font-size: 12px;
    color: #666;
  }

  .im-breadcrumbs__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .im-breadcrumbs__item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .im-breadcrumbs__item + .im-breadcrumbs__item::before {
    content: '>';
    color: #94a3b8;
  }

  .im-breadcrumbs a {
    color: #666;
  }

  .im-breadcrumbs a:hover {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
  }
}