/* ============================================================
   RESPONSIVE — Breakpoints, Reduced Motion, High Contrast
   ============================================================ */

/* ── Desktop refinement ───────────────────────────────────── */
@media (min-width: 961px) {
  .hero__title {
    white-space: nowrap;
  }
}

@media (max-width: 720px) {
  .project-modal {
    padding: 16px;
  }

  .project-modal__dialog {
    width: min(100vw - 16px, 100%);
    max-height: calc(100vh - 32px);
    padding: 24px 20px;
    border-radius: 18px;
  }

  .project-modal__close {
    top: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
  }

  .project-card__achievements-trigger {
    width: 100%;
    justify-content: center;
  }
}

/* ── Tablet (≤ 960px) ─────────────────────────────────────── */
@media (max-width: 960px) {
  /* Nav */
  .nav__list {
    display: none;
  }

  .nav__list.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    min-width: 200px;
    box-shadow: var(--shadow);
    z-index: 999;
  }

  .nav__toggle {
    display: block;
  }

  .nav__indicator {
    display: none;
  }

  /* Header inner: position relative for the dropdown */
  .header__inner {
    position: relative;
  }

  /* Hero: single column, content first (text above photo on tablet) */
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    max-width: 280px;
    margin: 0 auto;
  }

  /* About */
  .about__grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .about__card {
    min-height: 200px;
    padding: 28px 24px 24px;
  }

  /* Bento Grid */
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .skill-card {
    min-height: 124px;
  }

  .bento-cell--featured {
    grid-column: span 2;
  }

  /* Projects */
  .projects__grid {
    grid-template-columns: 1fr;
  }

  .project-card .tilt-inner {
    grid-template-columns: 1fr;
    grid-template-areas:
      "metric"
      "title"
      "description"
      "stack"
      "actions";
    gap: 0;
  }

  .project-card__metric {
    min-height: auto;
    margin-bottom: 22px;
    padding-right: 0;
    padding-bottom: 20px;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .timeline__card {
    padding: 22px 24px;
  }

  .timeline {
    --timeline-axis-offset: 22px;
    --timeline-content-gap: 22px;
    margin-top: 28px;
  }

  .timeline__dot::after {
    width: calc(var(--timeline-content-gap) - 6px);
  }

  .education__card {
    min-height: 200px;
    padding: 28px 24px 24px;
  }

  .contact__grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  /* Bookshelf tablet */
  .book-card {
    grid-template-columns: 44px 148px minmax(0, 1fr);
    min-height: 220px;
  }

  .book-card__cover {
    padding: 20px 12px;
  }

  .book-card__cover-icon {
    font-size: 34px;
  }

  .book-card__body {
    padding: 22px 24px;
  }

  .bookshelf__nav--prev {
    left: -18px;
  }

  .bookshelf__nav--next {
    right: -18px;
  }
}

/* ── Mobile (≤ 720px) ─────────────────────────────────────── */
@media (max-width: 720px) {
  :root {
    --anchor-offset: 84px;
  }

  html,
  body {
    overflow-x: hidden;
    overflow-x: clip;
  }

  main {
    gap: 64px;
  }

  .section-label,
  .hero__content,
  .hero__visual {
    transform: none !important;
  }

  /* Hero */
  #hero,
  .hero {
    padding-top: 80px;
    min-height: auto;
  }

  /* Timeline */
  .timeline {
    padding-left: 0;
  }

  .timeline__svg {
    display: none;
  }

  .timeline::before {
    display: none;
  }

  .timeline-item::before,
  .timeline__dot {
    display: none;
  }

  .timeline-item,
  .timeline__item {
    grid-template-columns: 1fr;
    column-gap: 0;
    padding-left: 0;
  }

  .timeline {
    gap: 24px;
  }

  .timeline__card {
    padding: 20px 22px;
    gap: 14px;
  }

  .timeline__meta {
    gap: 8px;
  }

  .experience__spoiler summary {
    padding: 13px 16px 13px 40px;
  }

  .experience__spoiler ul {
    padding: 0 16px 16px;
  }

  .education__grid,
  .contact__grid {
    grid-template-columns: 1fr;
  }

  .education__card,
  .contact-card {
    min-height: auto;
  }

  /* Bookshelf mobile: без корешка и обложки — только тело */
  .book-card {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto;
    min-height: auto;
  }

  .book-card__spine,
  .book-card__cover {
    display: none;
  }

  .book-card__body {
    padding: 24px 22px;
  }

  .book-card::before {
    left: 0;
  }

  .bookshelf__nav {
    width: 38px;
    height: 38px;
    font-size: 16px;
  }

  .bookshelf__nav--prev {
    left: -8px;
  }

  .bookshelf__nav--next {
    right: -8px;
  }

  /* Bento still 2 cols */
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bento-cell--featured {
    grid-column: span 2;
  }

  .bento-cell--featured .skill-card__inner {
    align-items: center;
    text-align: center;
  }
}

/* ── Small Mobile (≤ 480px) ───────────────────────────────── */
@media (max-width: 480px) {
  /* Bento: single column */
  .bento-grid {
    grid-template-columns: 1fr;
  }

  .bento-cell--featured {
    grid-column: span 1;
  }

  /* Project cards */
  .project-card {
    padding: 24px;
  }

  .projects__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .project-card__metric-number {
    font-size: 24px;
  }

  .project-card__title {
    font-size: 20px;
  }

  /* About */
  .about__grid {
    grid-template-columns: 1fr;
  }

  .about__card {
    min-height: auto;
  }

  .education__card,
  .contact-card {
    padding: 22px 20px;
  }

  /* Bookshelf small mobile */
  .book-card__body {
    padding: 20px 18px;
    gap: 10px;
  }

  .book-card__title {
    font-size: 15px;
  }

  .book-card__note {
    font-size: 13px;
  }

  .bookshelf {
    margin-top: 40px;
  }

  .bookshelf__nav {
    display: none;
  }

  .timeline__card {
    padding: 18px 18px 20px;
  }

  .timeline__role {
    font-size: 17px;
  }

  .experience__spoiler summary {
    padding: 12px 14px 12px 38px;
    font-size: 12px;
  }

  .experience__spoiler ul {
    padding: 0 14px 14px;
  }

  .experience__spoiler li {
    padding: 10px 0 10px 18px;
    font-size: 13px;
  }

  .skill-card,
  .bento-cell--featured.skill-card {
    min-height: 116px;
  }
}

/* ── Reduced Motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  #aurora-canvas {
    opacity: 0.2;
  }

  .scroll-indicator,
  .hero__scroll-indicator {
    display: none;
  }
}

/* ── High Contrast ────────────────────────────────────────── */
@media (prefers-contrast: high) {
  :root {
    --border: rgba(255, 255, 255, 0.3);
    --text-secondary: #c8d0dc;
  }
}