/*
  Breakpoints:
    < 600px   mobile   (sidebar = off-canvas drawer, default in components.css)
    >= 600px  tablet
    >= 960px  desktop  (sidebar becomes a persistent column)
    >= 1280px wide
*/

/* ---------------------------------------------------------------- */
/* Mobile-only refinements (< 600px)                                 */
/* ---------------------------------------------------------------- */

@media (max-width: 599px) {
  :root {
    --topbar-height: 72px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 21px;
  }

  .page-header {
    block-size: auto;
    min-height: 278px;
    padding-block: 0;
  }

  .page-header > .container {
    padding-block: var(--space-lg);
  }

  .page-header::after {
    inset: 94px -42px -18px auto;
    width: 196px;
    opacity: 0.22;
  }

  .page-header > .container {
    min-height: 178px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }

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

  #programResults.program-catalog-grid {
    grid-template-columns: 1fr;
  }

  .hero--photo .quick-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-xs);
  }

  .hero__media img {
    animation: none;
  }

  .hero__quick-actions {
    padding-top: var(--space-lg);
    padding-inline: calc(var(--space-md) + var(--space-xs));
  }

  .hero--photo .quick-action {
    min-width: 0;
    height: 72px;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 6px;
    padding: var(--space-xs);
  }

  .hero--photo .quick-action__icon {
    width: 32px;
    height: 32px;
  }

  .hero--photo .quick-action__icon svg {
    width: 19px;
    height: 19px;
  }

  .hero--photo .quick-action__label {
    flex: 1 1 0;
    min-width: 0;
    font-size: 13px;
    line-height: 1.25;
    overflow-wrap: anywhere;
  }

  .institutes-showcase__header {
    display: block;
  }

  .institutes-showcase__intro {
    margin-top: var(--space-sm);
  }

  .institute-showcase-grid {
    grid-template-columns: 1fr;
  }

  .institute-showcase-card {
    min-height: 250px;
  }

  .institutes-showcase__all {
    display: block;
    padding: var(--space-md);
  }

  .institutes-showcase__all-link {
    margin-top: var(--space-md);
    width: 100%;
  }
}

/* ---------------------------------------------------------------- */
/* Tablet and up (>= 600px)                                          */
/* ---------------------------------------------------------------- */

@media (min-width: 600px) {
  .container {
    padding-inline: var(--space-lg);
  }

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

  .institute-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .institute-showcase-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

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

  .home-news__intro {
    justify-self: end;
    text-align: right;
  }

  .home-news__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .science-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .science-item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 600px) and (max-width: 959px) {
  .hero--photo .quick-actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------------------------------------------------------------- */
/* Desktop and up (>= 960px): sidebar becomes a persistent column    */
/* ---------------------------------------------------------------- */

@media (min-width: 960px) {
  .science-list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .institute-showcase-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .science-item {
    grid-column: span 2;
  }

  .science-item--wide {
    grid-column: span 3;
    min-height: 196px;
  }

  .science-item:last-child {
    grid-column: span 2;
  }

  .sidebar {
    position: sticky;
    top: 0;
    left: auto;
    align-self: flex-start;
    height: 100vh;
    width: var(--sidebar-width);
    transform: none;
    box-shadow: none;
    flex-shrink: 0;
    transition: width var(--transition-base);
  }

  .app-shell__overlay {
    display: none;
  }

  .topbar__menu-btn,
  .sidebar__rail {
    display: none;
  }

  .sidebar__panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    padding: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    position: relative;
  }

  .sidebar__panel {
    scrollbar-gutter: auto;
  }

  .sidebar__search {
    margin: var(--space-2xs) var(--space-sm) 0;
  }

  .nav-list__item + .nav-list__item {
    margin-top: 2px;
  }

  .sidebar__panel-header::after {
    content: '';
    position: absolute;
    right: var(--space-sm);
    bottom: -1px;
    left: var(--space-sm);
    height: 3px;
    border-radius: var(--radius-pill);
    background: var(--color-accent);
  }

  .sidebar__panel-title {
    color: var(--color-primary);
    font: var(--text-title);
    font-weight: 700;
  }

  .sidebar__panel-title,
  .sidebar__search,
  .nav-list__label,
  .nav-list__toggle,
  .platonus-link__label {
    transition: opacity var(--transition-fast), transform var(--transition-fast);
  }

  .app-shell--collapsing .sidebar__panel-title,
  .app-shell--collapsing .sidebar__search,
  .app-shell--collapsing .nav-list__label,
  .app-shell--collapsing .nav-list__toggle,
  .app-shell--collapsing .platonus-link__label,
  .app-shell--expanding .sidebar__panel-title,
  .app-shell--expanding .sidebar__search,
  .app-shell--expanding .nav-list__label,
  .app-shell--expanding .nav-list__toggle,
  .app-shell--expanding .platonus-link__label {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-6px);
  }

  /* Collapsed icon-only state, toggled by navigation.js */
  .app-shell--collapsed .sidebar {
    width: var(--sidebar-width-collapsed);
  }

  .app-shell--expanding .sidebar {
    width: var(--sidebar-width);
  }

  .app-shell--collapsed .sidebar__search,
  .app-shell--collapsed .platonus-link__label,
  .app-shell--collapsed .nav-list__label,
  .app-shell--collapsed .nav-list__toggle,
  .app-shell--collapsed .nav-list__submenu {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .app-shell--collapsed .sidebar__panel-header {
    justify-content: center;
  }

  .app-shell--collapsed .sidebar__panel-title {
    display: none;
  }

  .app-shell--collapsed .sidebar__collapsed-search {
    display: grid;
    width: 44px;
    height: 44px;
    margin: var(--space-2xs) auto 0;
    padding: 0;
    place-items: center;
    color: var(--color-primary);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
  }

  .app-shell--collapsed-settling .sidebar__collapsed-search,
  .app-shell--expanding .sidebar__collapsed-search {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.85);
  }

  .app-shell--collapsed .sidebar__collapsed-search > span {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: var(--radius-pill);
    background: var(--color-accent);
    transition: background var(--transition-fast), transform var(--transition-fast);
  }

  .app-shell--collapsed .sidebar__collapsed-search:hover > span,
  .app-shell--collapsed .sidebar__collapsed-search:focus-visible > span {
    background: var(--color-accent-hover);
    transform: scale(1.05);
  }

  .app-shell--collapsed .sidebar__collapsed-search svg {
    width: 17px;
    height: 17px;
  }

  .app-shell--collapsed .sidebar__nav {
    padding: var(--space-2xs) 0 var(--space-sm);
  }

  .app-shell--collapsed .nav-list__item + .nav-list__item {
    margin-top: 2px;
  }

  .app-shell--collapsed .nav-list__row {
    width: 56px;
    margin-inline: auto;
    justify-content: center;
  }

  .app-shell--collapsed .nav-list__link {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    padding: 0;
    justify-content: center;
  }

  .app-shell--collapsed .nav-list__icon {
    margin: 0;
  }

  .app-shell--collapsed .platonus-link {
    width: 40px;
    min-height: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-sm);
  }

  .app-shell--collapsed .sidebar__footer {
    align-items: center;
    padding-inline: 16px;
  }

  .campus-block {
    grid-template-columns: 1.1fr 1fr;
  }

  .home-news__layout {
    grid-template-columns: minmax(0, 2fr) minmax(280px, 0.9fr);
  }
}

@media (max-width: 599px) {
  .topbar {
    min-height: 72px;
    padding-inline: var(--space-2xs);
    gap: var(--space-2xs);
  }

  #topbar-brand-mount {
    gap: var(--space-2xs);
  }

  .topbar__brand {
    gap: 6px;
    padding: 0;
  }

  .topbar__brand-logo {
    width: 48px;
    height: 48px;
    padding: 3px;
  }

  .topbar__brand-name {
    font-size: 12px;
  }

  .topbar__utilities {
    gap: 4px;
  }

  .lang-switch--topbar .lang-switch__btn {
    min-width: 30px;
    min-height: 32px;
    padding-inline: 4px;
    font-size: 10px;
  }

  .topbar__accessibility {
    min-height: 32px;
    padding: 6px;
  }

  .topbar__accessibility-label {
    display: none;
  }

  .institute-list--featured {
    grid-template-columns: 1fr;
  }

  .institute-detail-hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .institute-directory__card {
    min-height: 0;
    padding: var(--space-md);
  }
}

/* ---------------------------------------------------------------- */
/* Wide (>= 1280px)                                                   */
/* ---------------------------------------------------------------- */

@media (min-width: 1280px) {
  .container {
    padding-inline: var(--space-xl);
  }

  h1 {
    font-size: 32px;
  }
}

@media (max-width: 599px) {
  .international-intro__grid,.international-contacts,.international-paths,.international-projects,.international-contact-cards { grid-template-columns: 1fr; }
  .international-section-head { display: block; }
  .international-section-head .text-muted { margin-top: var(--space-sm); }
}

@media (min-width: 600px) {
  .international-paths { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .international-projects,.international-contact-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 599px) {
  .international-impact__head,.partner-ribbon .container { display:block; }
  .international-impact__head p,.partner-ribbon__track { margin-top:var(--space-sm); }
  .international-impact__stats,.international-news__grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .international-map__grid { grid-template-columns:1fr; }
  .international-map__visual { min-height: 380px; padding-inline: var(--space-sm); }
  .international-globe { width: min(92%, 300px); }
  .international-map__visual .international-map__point::after { display: none; }
  .international-map__legend { right: var(--space-sm); left: var(--space-sm); justify-content: center; }
}

@media (min-width: 600px) { .international-news__grid { grid-template-columns:repeat(3,minmax(0,1fr)); } }