/* === Responsive Breakpoints === */

/* Tablet: 810px - 1199px */
@media (max-width: 1199px) and (min-width: 810px) {
  .main {
    margin-left: var(--sidebar-width);
    padding: var(--padding-tablet);
  }

  .section {
    padding: 72px 0;
  }

  .hero__name {
    font-size: 2.5rem;
  }

  .project-detail__metrics {
    gap: 16px;
  }

  .about__content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .horse-diagram__pyramid {
    width: 36%;
  }

  .horse-diagram__item {
    width: 30%;
  }

  .project-detail__metrics--4col {
    grid-template-columns: repeat(2, 1fr);
  }

  .research-section {
    grid-template-columns: 1fr 1fr;
  }

  .research-section__metrics--3col {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-24);
  }

  .research-section__bg-text {
    font-size: 7rem;
  }

  .case-intro {
    grid-template-columns: 1fr;
    gap: var(--space-32);
  }

  .case-intro__meta {
    justify-content: flex-start;
    padding-top: 0;
  }

  .case-summary-cards {
    grid-template-columns: 1fr 1fr;
  }

  .chapter-number {
    font-size: 8rem;
  }

  .chapter-intro {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-40);
  }
}

/* Mobile: < 810px */
@media (max-width: 809px) {
  /* Sidebar becomes fullscreen overlay */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    padding: 0; /* Remove padding here, rely on inner */
    background: #FAFAFA;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: var(--z-mobile-overlay);
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .sidebar__header {
    display: none;
  }

  .sidebar__inner {
    height: 100%;
    padding: 100px 24px 24px 24px; /* Added top padding for mobile header */
  }

  /* Show mobile header */
  .mobile-header {
    display: flex;
  }

  /* Main content takes full width */
  .main {
    position: relative;
    margin-left: 0;
    padding: 80px var(--padding-mobile) 0;
  }

  /* Disable parallax GPU hints on mobile */
  [data-speed] {
    will-change: auto;
  }

  /* Section spacing */
  .section {
    padding: 64px 0;
  }

  .section--hero {
    padding-top: 16px;
  }

  /* Typography */
  .hero__name {
    font-size: 2rem;
  }

  .hero__role {
    font-size: var(--text-lg);
  }

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

  .contact__email {
    font-size: var(--text-lg);
  }

  /* Grids to single column */
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .horse-diagram {
    position: static;
    min-height: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-32);
    padding: var(--space-32) 0;
  }

  .horse-diagram__pyramid {
    width: 60%;
    max-width: 280px;
    margin: 0 auto;
    order: 0;
  }

  .horse-diagram__item {
    position: static;
    width: 100%;
    max-width: 100%;
  }

  .horse-diagram__item--app { order: 1; }
  .horse-diagram__item--projet { order: 2; }
  .horse-diagram__item--plateforme { order: 3; }
  .horse-diagram__item--ds { order: 4; }

  .horse-diagram__note {
    position: static;
    order: 5;
  }

  .project-detail__metrics {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .project-detail__images {
    grid-template-columns: 1fr;
  }

  .project-detail__images--3col {
    grid-template-columns: 1fr;
  }

  .about__content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .context-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .user-quotes {
    grid-template-columns: 1fr;
  }

  .research-section {
    grid-template-columns: 1fr;
    overflow: visible;
    padding-top: var(--space-48);
    margin-bottom: var(--space-64);
    min-height: auto;
  }

  .research-section__bg-text {
    font-size: 4rem;
    top: -10px;
  }

  .research-section__metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-16);
  }

  .research-section__metrics .metric {
    padding: var(--space-12);
  }

  .research-section__metrics .metric__value {
    font-size: 2rem;
  }

  .research-section__metrics .metric__label {
    font-size: var(--text-base);
    margin-top: var(--space-4);
  }

  .research-section__metrics--3col {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-detail__metrics--4col {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }

  .project-detail__chapter {
    padding-top: var(--space-64);
    margin-top: var(--space-64);
  }

  .project-detail__chapter-header h3 {
    font-size: var(--text-xl);
  }

  .case-intro {
    grid-template-columns: 1fr;
    gap: var(--space-24);
  }

  .case-intro__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-12);
    padding-top: 0;
  }

  /* Case summary cards */
  .case-summary-cards {
    grid-template-columns: 1fr;
    gap: var(--space-24);
  }

  .case-summary-card__header {
    padding: var(--space-20);
    gap: var(--space-12);
  }

  .case-summary-card__number {
    font-size: 2.5rem;
  }

  .case-summary-card__title {
    font-size: var(--text-base);
  }

  .case-summary-card__subtitle {
    font-size: var(--text-base);
  }

  .case-summary-card__image {
    padding: 0 var(--space-12) var(--space-12);
  }

  /* Chapter decorative numbers */
  .chapter-number {
    font-size: 4rem;
    margin-top: -0.5rem;
    margin-bottom: var(--space-24);
  }

  .chapter-intro__number {
    font-size: 5rem;
    top: -80px;
  }

  /* Chapter intro */
  .chapter-intro {
    grid-template-columns: 1fr;
    gap: var(--space-32);
    min-height: auto;
    margin-bottom: var(--space-48);
  }

  .chapter-intro__label {
    font-size: var(--text-base);
  }

  .chapter-intro__block p {
    font-size: var(--text-base);
  }

  /* Before/After */
  .project-detail__before-after {
    margin-bottom: var(--space-48);
  }

  /* Bar charts */
  .bar-metrics {
    grid-template-columns: 1fr;
    gap: var(--space-32);
    max-width: 280px;
    margin-left: auto;
    margin-right: auto;
  }

  .bar-metric__chart {
    height: 140px;
    max-width: 100%;
  }

  .bar-metric__label {
    font-size: var(--text-base);
  }

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

  /* Bento grid */
  .bento-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "migration"
      "parcours"
      "dashboard"
      "ia"
      "design"
      "rgaa";
    margin-bottom: var(--space-48);
  }

  .bento-card {
    padding: var(--space-20);
  }

  .bento-card--row {
    flex-direction: column;
  }

  .bento-card--row .bento-card__visual {
    max-width: 100%;
  }

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

  .bento-card__desc {
    font-size: var(--text-base);
  }

  .bento-title {
    font-size: var(--text-lg);
  }

  /* Constats section */
  .constats-section {
    grid-template-columns: 1fr;
    gap: var(--space-24);
    margin-bottom: var(--space-64);
  }

  .constats-section__visuals {
    display: none;
  }

  .constat-item__visual {
    display: none;
    margin-top: var(--space-16);
    border-radius: var(--radius-lg);
    overflow: hidden;
  }

  .constat-item.is-active .constat-item__visual {
    display: block;
  }

  .constat-item__visual img,
  .constat-item__visual video {
    width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    display: block;
  }

  .constats-section__title {
    font-size: var(--text-lg);
    padding-left: 0;
    margin-bottom: var(--space-24);
  }

  .constat-item {
    padding: var(--space-24);
  }

  .constat-item h4 {
    font-size: var(--text-base);
  }

  .constat-item p {
    font-size: var(--text-base);
  }

  /* Research section quotes */
  .research-section__quotes {
    max-width: 100%;
    padding: var(--space-16);
  }

  .research-section__quotes .user-quote {
    padding: var(--space-24);
    font-size: var(--text-base);
  }

  .research-section__metrics--3col .metric__label {
    font-size: var(--text-base);
  }

  /* Quotes */
  .chapter-quote {
    font-size: var(--text-base);
    margin-bottom: var(--space-32);
  }

  .research-section--impact {
    padding-bottom: var(--space-32);
  }

  .user-quotes {
    gap: var(--space-12);
  }

  .user-quote {
    padding: var(--space-12) var(--space-16);
    font-size: var(--text-base);
  }

  /* Context grid */
  .context-grid {
    gap: var(--space-16);
  }

  /* Horse diagram */
  .horse-diagram {
    padding: var(--space-24) 0;
    gap: var(--space-24);
    margin-bottom: var(--space-48);
  }

  .horse-diagram__item h4 {
    width: auto;
    font-size: var(--text-base);
  }

  .horse-diagram__item p {
    font-size: var(--text-base);
  }

  /* Contact section */
  .section--contact {
    padding-top: var(--space-64);
    padding-bottom: var(--space-32);
  }

  .contact__email {
    font-size: var(--text-base);
    word-break: break-all;
  }

  .contact__text {
    font-size: var(--text-base);
  }

  /* Global overflow safety */
  .project-detail__body {
    max-width: 100%;
    overflow-wrap: break-word;
    word-break: break-word;
  }
}

/* Overlay backdrop for mobile menu */
body.menu-open::before {
  content: '';
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: calc(var(--z-mobile-overlay) - 1);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  [data-speed] {
    will-change: auto;
  }

  .sidebar {
    transition: none;
  }
}