/* NOPPON APPLICATION v52 — Experience layer
   A theme-aware visual system for learner and teacher surfaces.
   This file intentionally changes presentation only. */

:root {
  --v52-radius-xs: 10px;
  --v52-radius-sm: 14px;
  --v52-radius-md: 18px;
  --v52-radius-lg: 24px;
  --v52-radius-xl: 30px;
  --v52-line: color-mix(in srgb, var(--border) 68%, var(--maroon) 32%);
  --v52-line-soft: color-mix(in srgb, var(--border) 86%, var(--maroon) 14%);
  --v52-line-strong: color-mix(in srgb, var(--border) 42%, var(--maroon) 58%);
  --v52-surface: color-mix(in srgb, var(--card) 96%, var(--maroon-soft));
  --v52-surface-soft: color-mix(in srgb, var(--card) 78%, var(--paper));
  --v52-surface-tint: color-mix(in srgb, var(--card) 88%, var(--maroon-soft));
  --v52-ink-soft: color-mix(in srgb, var(--ink) 76%, var(--muted));
  --v52-shadow-xs: 0 1px 2px rgba(var(--theme-deep-rgb), .04), 0 4px 12px rgba(var(--theme-deep-rgb), .045);
  --v52-shadow-sm: 0 2px 6px rgba(var(--theme-deep-rgb), .055), 0 12px 30px rgba(var(--theme-deep-rgb), .075);
  --v52-shadow-md: 0 3px 9px rgba(var(--theme-deep-rgb), .07), 0 20px 48px rgba(var(--theme-deep-rgb), .11);
  --v52-shadow-lg: 0 8px 22px rgba(var(--theme-deep-rgb), .11), 0 34px 76px rgba(var(--theme-deep-rgb), .15);
  --v52-inner-light: inset 0 1px 0 color-mix(in srgb, #fff 76%, transparent);
  --v52-focus: 0 0 0 3px var(--card), 0 0 0 6px color-mix(in srgb, var(--maroon-2) 70%, transparent);
  --v52-fast: 150ms;
  --v52-normal: 240ms;
  --v52-slow: 360ms;
  --v52-ease: cubic-bezier(.2, .8, .25, 1);
}

body.dark {
  --v52-line: color-mix(in srgb, var(--border) 68%, var(--maroon) 32%);
  --v52-line-soft: color-mix(in srgb, var(--border) 84%, var(--maroon) 16%);
  --v52-surface: color-mix(in srgb, var(--card) 92%, var(--maroon-soft));
  --v52-surface-soft: color-mix(in srgb, var(--paper) 72%, var(--card));
  --v52-surface-tint: color-mix(in srgb, var(--card) 84%, var(--maroon-soft));
  --v52-ink-soft: color-mix(in srgb, var(--ink) 76%, var(--muted));
  --v52-shadow-xs: 0 2px 6px rgba(0, 0, 0, .2), 0 7px 18px rgba(0, 0, 0, .16);
  --v52-shadow-sm: 0 4px 10px rgba(0, 0, 0, .24), 0 14px 34px rgba(0, 0, 0, .22);
  --v52-shadow-md: 0 7px 15px rgba(0, 0, 0, .28), 0 24px 54px rgba(0, 0, 0, .28);
  --v52-shadow-lg: 0 12px 28px rgba(0, 0, 0, .36), 0 38px 82px rgba(0, 0, 0, .4);
  --v52-inner-light: inset 0 1px 0 rgba(255, 255, 255, .08);
  --v52-focus: 0 0 0 3px var(--paper), 0 0 0 6px color-mix(in srgb, var(--crimson) 74%, transparent);
}

/* Baseline quality, accessibility and comfortable controls. */
html {
  scroll-padding-top: 96px;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 8% 2%, rgba(var(--theme-secondary-rgb), .07), transparent 28rem),
    radial-gradient(circle at 94% 22%, rgba(var(--theme-highlight-rgb), .055), transparent 25rem);
  background-attachment: fixed;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

:where(
  button,
  a[href],
  input,
  select,
  textarea,
  summary,
  [tabindex]:not([tabindex="-1"])
):focus-visible {
  outline: 0;
  box-shadow: var(--v52-focus);
}

:where(button, a[href], summary, select) { touch-action: manipulation; }

:where(
  .btn,
  .icon-btn,
  .back-btn,
  .mini-btn,
  .card-act,
  .nav-btn,
  .admin-jump,
  .admin-row-actions button,
  .admin-dialog-close,
  .student-notification-close,
  .student-notification-filters button,
  .notification-mark-all,
  .app-badge-permission button,
  .notification-message-actions a,
  .notification-message-actions button,
  .notification-delete,
  .calendar-admin-actions button,
  .access-control-row button,
  .swk-rubric-row > button,
  .swk-rubric-footer button,
  .swk-bulk-selectbar button,
  .swk-uploaded-file button,
  .admin-overview-logout,
  .admin-backup-row a,
  .admin-link-search-wrap button,
  #adminArea details.card summary,
  .swk-card-foot button,
  .swk-home-card > button,
  .swk-admin-toolbar > button
) {
  min-height: 44px;
}

:where(
  .icon-btn,
  .back-btn,
  .mini-btn,
  .card-act,
  .admin-row-actions button,
  .admin-dialog-close,
  .student-notification-close,
  .notification-delete,
  .calendar-admin-actions button,
  .swk-rubric-row > button,
  .swk-uploaded-file button,
  .admin-link-search-wrap button
) {
  min-width: 44px;
}

:where(.btn, .icon-btn, .back-btn, .mini-btn, .card-act, .nav-btn, .admin-jump) {
  transition:
    transform var(--v52-fast) var(--v52-ease),
    color var(--v52-fast) ease,
    background-color var(--v52-fast) ease,
    border-color var(--v52-fast) ease,
    box-shadow var(--v52-normal) ease;
}

/* Header, search and navigation. */
.hero {
  border-radius: 0 0 clamp(30px, 5vw, 46px) clamp(30px, 5vw, 46px);
  box-shadow:
    inset 0 -1px 0 rgba(255, 255, 255, .15),
    0 26px 66px rgba(var(--theme-deep-rgb), .24);
}

.hero-top,
.hero-greet { width: min(100%, 1160px); margin-inline: auto; }

.hero-greet h2 {
  max-width: 820px;
  letter-spacing: -.028em;
  line-height: 1.2;
  text-wrap: balance;
}

.hero-greet p { max-width: 680px; line-height: 1.55; }

.hero-quick-action {
  min-width: 46px;
  min-height: 46px;
  border-color: rgba(255, 255, 255, .28);
  border-radius: var(--v52-radius-sm);
  background: rgba(255, 255, 255, .14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18), 0 8px 22px rgba(0, 0, 0, .11);
}

.search-wrap { max-width: 760px; }

.search-box {
  min-height: 60px;
  border-color: var(--v52-line);
  border-radius: var(--v52-radius-md);
  background: color-mix(in srgb, var(--card) 93%, transparent);
  box-shadow: var(--v52-shadow-md), var(--v52-inner-light);
  transition: transform var(--v52-normal) var(--v52-ease), box-shadow var(--v52-normal) ease, border-color var(--v52-fast) ease;
}

.search-box:focus-within {
  border-color: var(--v52-line-strong);
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--maroon-2) 14%, transparent), var(--v52-shadow-md);
}

.submenu-head {
  min-height: 56px;
  gap: 13px;
  padding: 2px 0 6px;
}

.submenu-head h2 {
  letter-spacing: -.024em;
  line-height: 1.25;
  text-wrap: balance;
}

.back-btn {
  border-color: var(--v52-line);
  border-radius: var(--v52-radius-sm);
  background: var(--v52-surface);
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
}

.bottom-nav-wrap { z-index: 70; }

.bottom-nav {
  border-color: var(--v52-line);
  border-radius: 27px;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  box-shadow: var(--v52-shadow-lg), var(--v52-inner-light);
}

.nav-btn {
  min-width: 0;
  min-height: 52px;
  border: 1px solid transparent;
  border-radius: var(--v52-radius-sm);
}

.nav-btn.active:not(.nav-btn-center) {
  color: var(--maroon);
  background: color-mix(in srgb, var(--maroon-soft) 82%, var(--card));
  border-color: color-mix(in srgb, var(--maroon) 20%, var(--border));
  box-shadow: 0 7px 18px rgba(var(--theme-rgb), .1), var(--v52-inner-light);
}

.nav-btn-center .uic {
  box-shadow:
    0 13px 31px rgba(var(--theme-deep-rgb), .24),
    0 0 0 5px color-mix(in srgb, var(--card) 90%, transparent),
    0 0 30px rgba(var(--theme-secondary-rgb), .25);
}

/* Shared content hierarchy. */
.section-label {
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--v52-ink-soft);
  font: 600 clamp(17px, 2vw, 20px)/1.35 'Kanit', sans-serif;
  letter-spacing: -.012em;
}

.section-label::before {
  width: 10px;
  height: 10px;
  border-radius: 4px;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--maroon) 9%, transparent);
}

:where(.card, .card-base, .home-summary, .research-panel, .student-analytics-card) {
  border-color: var(--v52-line-soft);
  box-shadow: var(--v52-shadow-sm), var(--v52-inner-light);
}

:where(.card, .research-panel, .student-analytics-card) { border-radius: var(--v52-radius-lg); }

.home-summary,
.announce {
  border-radius: var(--v52-radius-md);
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
}

.home-summary { min-height: 70px; padding: 15px 17px; }
.announce { border-left-width: 5px; }

/* Main system cards. Card Studio keeps ownership of its alternate styles. */
body:is(:not([data-system-card-style]), [data-system-card-style="square"]):not(.shape-circle) .menu-card,
body:is(:not([data-system-card-style]), [data-system-card-style="square"]):not(.shape-circle) .link-card {
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--ac, var(--maroon)) 8%, transparent), transparent 38%),
    var(--v52-surface);
}

body:not(.shape-circle) .menu-card,
body:not(.shape-circle) .link-card {
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 18%, var(--border));
  border-radius: var(--v52-radius-lg);
  box-shadow: var(--v52-shadow-sm), var(--v52-inner-light);
}

body:not(.shape-circle):not([data-system-card-style="compact"]) .menu-card {
  min-height: 172px;
  padding: 21px 17px;
  gap: 9px;
}

.menu-grid,
.link-grid { align-items: stretch; }

body:not(.shape-circle) :where(.menu-card, .link-card) { height: 100%; }

body:not(.shape-circle):not([data-system-card-style="compact"]) .menu-card h3,
body:not(.shape-circle):not([data-system-card-style="compact"]) .link-card h3,
body:not(.shape-circle):not([data-system-card-style="compact"]) .menu-card p,
body:not(.shape-circle):not([data-system-card-style="compact"]) .link-card p {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

/* Re-assert the compact option after the professional layers without taking
   ownership of its colours, effects or Card Studio identity. */
body:not(.shape-circle)[data-system-card-style="compact"] .menu-card {
  min-height: 82px;
  padding: 11px 12px;
  column-gap: 11px;
  row-gap: 2px;
}

body:not(.shape-circle)[data-system-card-style="compact"] .link-card {
  min-height: 0;
  padding: 0;
  gap: 0;
}

body:not(.shape-circle)[data-system-card-style="compact"] .link-card-body {
  padding: 12px 13px;
  gap: 6px;
}

body:not(.shape-circle)[data-system-card-style="compact"] .link-card .go {
  min-height: 36px;
  padding: 4px 5px 4px 11px;
}

body:not(.shape-circle)[data-system-card-style="compact"] .link-card .go .arrow {
  width: 28px;
  height: 28px;
}

.menu-card .micon,
.link-card .icon {
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 25%, var(--border));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .74),
    0 12px 27px color-mix(in srgb, var(--ac, var(--maroon)) 15%, transparent);
}

.menu-card h3,
.link-card h3 {
  letter-spacing: -.015em;
  text-wrap: balance;
}

.menu-card .count,
.link-card .cat {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 16%, var(--border));
}

body:not(.shape-circle):not([data-system-card-style="compact"]) .link-card {
  min-height: 228px;
  padding: 0;
  gap: 0;
}

body:not(.shape-circle):not([data-system-card-style="compact"]) .link-card-body {
  padding: 20px;
  gap: 11px;
}

.link-card .go {
  min-height: 46px;
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 17%, var(--border));
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 62%, transparent);
}

.link-card .go .arrow { width: 33px; height: 33px; }

.card-actions { gap: 7px; }

.card-act {
  width: 44px;
  height: 44px;
  border-color: var(--v52-line);
  border-radius: 13px;
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
}

/* Circle cards keep a full 44px target while presenting a compact visual
   control, so favourite/share controls do not cover the artwork. */
body.shape-circle .card-actions {
  top: -12px;
  right: 50%;
  width: 88px;
  gap: 0;
  justify-content: center;
  transform: translateX(50%);
}

body.shape-circle .card-act {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

body.shape-circle .card-act::before {
  position: absolute;
  inset: 7px;
  border: 1px solid var(--v52-line);
  border-radius: 50%;
  background: color-mix(in srgb, var(--card) 91%, transparent);
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
  content: '';
}

body.shape-circle .card-act .uic { position: relative; z-index: 1; }
body.shape-circle .card-act.active::before { border-color: var(--gold); }

.link-media {
  border-bottom-color: color-mix(in srgb, var(--ac, var(--maroon)) 16%, var(--border));
}

.link-media::after {
  background: linear-gradient(180deg, transparent 48%, rgba(var(--theme-deep-rgb), .25));
}

/* Learning-resource cards. */
.knowledge-shell { margin-top: clamp(30px, 5vw, 42px); }

.know-section-head { margin-bottom: 18px; }
.know-section-head h2 { letter-spacing: -.028em; text-wrap: balance; }

.know-count-pill {
  min-height: 44px;
  border-color: var(--v52-line);
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
}

.know-grid { gap: clamp(13px, 2vw, 20px); }

.know-card.card-base {
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 19%, var(--border));
  border-radius: var(--v52-radius-lg);
  background: var(--v52-surface);
  box-shadow: var(--v52-shadow-sm), var(--v52-inner-light);
}

.know-visual {
  border-bottom-color: color-mix(in srgb, var(--ac, var(--maroon)) 16%, var(--border));
}

.know-visual-icon,
.know-media-badge {
  border-color: color-mix(in srgb, #fff 64%, var(--border));
  box-shadow: 0 13px 29px rgba(var(--theme-deep-rgb), .15), var(--v52-inner-light);
}

.know-content { gap: 13px; padding: 18px 19px 19px; }
.know-content .know-name { letter-spacing: -.013em; }

.know-content .know-go {
  min-width: 44px;
  min-height: 44px;
  border-radius: 14px;
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 22%, var(--border));
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 70%, transparent);
}

/* Public information, shortcut and promotion cards. */
.info-card {
  min-height: 150px;
  border-radius: var(--v52-radius-lg);
  background:
    radial-gradient(circle at 88% 4%, color-mix(in srgb, var(--ac, var(--maroon)) 8%, transparent), transparent 42%),
    var(--v52-surface);
}

.info-value { letter-spacing: -.025em; }

.chip-card {
  min-height: 112px;
  border-color: var(--v52-line-soft);
  border-radius: var(--v52-radius-md);
  background: var(--v52-surface);
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
}

.cs-icon {
  border-color: color-mix(in srgb, var(--maroon) 20%, var(--border));
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 70%, transparent);
}

.img-grid:not(.is-circle) .img-card {
  border-color: var(--v52-line-soft);
  border-radius: var(--v52-radius-lg);
  background: var(--v52-surface);
  box-shadow: var(--v52-shadow-sm), var(--v52-inner-light);
}

.img-card .cap {
  min-height: 46px;
  padding: 12px 14px;
  line-height: 1.5;
}

.img-link-badge {
  width: 32px;
  height: 32px;
  box-shadow: 0 8px 20px rgba(var(--theme-deep-rgb), .22), 0 0 0 3px color-mix(in srgb, var(--card) 88%, transparent);
}

.img-grid.is-feature .img-card .cap {
  padding: 38px 18px 17px;
  letter-spacing: -.01em;
}

/* Teacher workspace. */
body.admin-active main { max-width: 1240px; }

.admin-overview {
  padding: clamp(21px, 3vw, 30px);
  border-radius: var(--v52-radius-xl);
  box-shadow: var(--v52-shadow-lg), inset 0 1px 0 rgba(255, 255, 255, .18);
}

.admin-overview h3 {
  font-size: clamp(22px, 3vw, 29px);
  letter-spacing: -.028em;
  text-wrap: balance;
}

.admin-metrics { gap: 10px; margin-top: 18px; }

.admin-metric {
  min-height: 78px;
  padding: 13px;
  border-color: rgba(255, 255, 255, .16);
  border-radius: var(--v52-radius-sm);
  background: rgba(255, 255, 255, .115);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
}

.admin-jumpbar {
  top: max(8px, env(safe-area-inset-top));
  gap: 8px;
  padding: 9px;
  border-color: var(--v52-line);
  border-radius: var(--v52-radius-md);
  background: color-mix(in srgb, var(--card) 91%, transparent);
  scroll-padding-inline: 9px;
  scroll-snap-type: x proximity;
  overscroll-behavior-inline: contain;
  scrollbar-color: color-mix(in srgb, var(--maroon) 42%, transparent) transparent;
  scrollbar-width: thin;
  box-shadow:
    inset -22px 0 20px -24px rgba(var(--theme-deep-rgb), .5),
    var(--v52-shadow-md),
    var(--v52-inner-light);
}

.admin-jumpbar::-webkit-scrollbar { display: block; height: 4px; }
.admin-jumpbar::-webkit-scrollbar-track { background: transparent; }
.admin-jumpbar::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: color-mix(in srgb, var(--maroon) 42%, transparent);
}

.admin-jump {
  min-height: 44px;
  padding: 9px 13px;
  border-color: var(--v52-line-soft);
  border-radius: 12px;
  scroll-snap-align: start;
}

.admin-jump[aria-current="true"] {
  color: var(--maroon);
  background: color-mix(in srgb, var(--maroon-soft) 84%, var(--card));
  border-color: var(--v52-line-strong);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--maroon) 12%, transparent);
}

#adminArea > :where(.card, details.card) {
  border-color: var(--v52-line-soft);
  border-radius: var(--v52-radius-lg);
  box-shadow: var(--v52-shadow-sm), var(--v52-inner-light);
}

#adminArea .admin-section-head { gap: 16px; }
#adminArea .admin-section-head h3 { letter-spacing: -.022em; text-wrap: balance; }
#adminArea .admin-section-head p { max-width: 780px; line-height: 1.62; }

#adminArea details.card > summary {
  min-height: 52px;
  padding-block: 8px;
  border-radius: var(--v52-radius-sm);
}

.admin-item {
  min-height: 74px;
  gap: 13px;
  padding-block: 14px;
}

.admin-item .icon,
.admin-system-item > .icon,
.admin-data-icon { border-radius: var(--v52-radius-sm); }

.admin-link-tools,
.admin-import-panel,
.admin-link-group,
.admin-student-table-wrap {
  border-color: var(--v52-line);
  border-radius: var(--v52-radius-md);
}

.admin-link-group { box-shadow: var(--v52-shadow-xs); }
.admin-link-group[open] { border-color: var(--v52-line-strong); box-shadow: var(--v52-shadow-sm); }
.admin-link-group > summary { min-height: 72px; }

.admin-data-metric,
.admin-foundation-panel,
.admin-health-item,
.admin-backup-row,
.admin-audit-row {
  border-color: var(--v52-line-soft);
  box-shadow: var(--v52-shadow-xs);
}

.admin-data-metric {
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--maroon-soft) 70%, var(--card)), var(--card));
}

.admin-student-table-wrap { box-shadow: var(--v52-inner-light); }

.admin-student-table tbody tr,
.admin-row-actions button {
  transition:
    transform var(--v52-fast) var(--v52-ease),
    color var(--v52-fast) ease,
    background-color var(--v52-fast) ease,
    border-color var(--v52-fast) ease;
}

.admin-dialog {
  border: 1px solid var(--v52-line);
  border-radius: var(--v52-radius-lg);
  box-shadow: var(--v52-shadow-lg);
}

.admin-dialog-close,
.mini-btn,
.admin-row-actions button { border-radius: 12px; }

.promotion-choice,
.system-style-choice,
.system-motion-choice,
.shape-choice,
.theme-preset {
  min-height: 100px;
  border-color: var(--v52-line-soft);
  border-radius: var(--v52-radius-sm);
  box-shadow: var(--v52-shadow-xs);
}

/* Student work and assessment. */
.swk-home-card,
.swk-student-welcome,
.swk-student-card,
.swk-admin-card,
.swk-admin-panel,
.swk-review-card {
  border-radius: var(--v52-radius-lg);
}

.swk-home-card,
.swk-student-card,
.swk-admin-panel,
.swk-review-card {
  border-color: var(--v52-line-soft);
  box-shadow: var(--v52-shadow-sm), var(--v52-inner-light);
}

.swk-home-card {
  background:
    radial-gradient(circle at 82% 0, rgba(var(--theme-highlight-rgb), .18), transparent 32%),
    linear-gradient(125deg, color-mix(in srgb, var(--maroon-soft) 76%, var(--card)), var(--card) 74%);
}

.swk-home-icon,
.swk-admin-icon,
.swk-modal-icon {
  border-radius: var(--v52-radius-md);
  box-shadow: 0 13px 29px color-mix(in srgb, var(--maroon) 24%, transparent), inset 0 1px 0 rgba(255, 255, 255, .24);
}

.swk-student-kpis > div,
.swk-admin-kpis > div {
  min-height: 94px;
  border-color: var(--v52-line-soft);
  border-radius: var(--v52-radius-md);
  background: var(--v52-surface);
  box-shadow: var(--v52-shadow-xs), var(--v52-inner-light);
}

.swk-student-card {
  transition: transform var(--v52-normal) var(--v52-ease), border-color var(--v52-fast) ease, box-shadow var(--v52-normal) ease;
}

.swk-meta-grid > span,
.swk-session-note,
.swk-material-file,
.swk-review-files a,
.swk-folder-link {
  border-color: var(--v52-line-soft);
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 58%, transparent);
}

.swk-card-foot button,
.swk-home-card > button,
.swk-admin-hero-actions button,
.swk-admin-toolbar > button {
  border-radius: 13px;
  box-shadow: 0 9px 21px color-mix(in srgb, var(--maroon) 20%, transparent);
}

.swk-dropzone {
  border-color: color-mix(in srgb, var(--maroon) 40%, var(--border));
  border-radius: var(--v52-radius-md);
  background:
    radial-gradient(circle at 50% 0, color-mix(in srgb, var(--maroon) 7%, transparent), transparent 54%),
    color-mix(in srgb, var(--maroon-soft) 42%, var(--card));
}

/* Readable metadata across dense notification, research and assignment tools. */
:where(
  .app-badge-permission-copy span,
  .notification-message-meta time,
  .notification-message-actions a,
  .notification-message-actions button,
  .access-control-row p,
  .research-panel-head small,
  .research-legend,
  .research-rank-copy small,
  .research-rank-value small,
  .research-method-item,
  .analytics-privacy,
  .swk-verified-note small,
  .swk-material-file small,
  .swk-uploaded-file small,
  .swk-upload-progress small,
  .swk-receipt-status small,
  .swk-review-files a small,
  .swk-folder-link small,
  .swk-bulk-selectbar span
) {
  font-size: 11px;
  line-height: 1.5;
}

:where(
  .notification-kicker,
  .notification-priority,
  .access-control-row button,
  .swk-verified-note b,
  .swk-material-file b,
  .swk-uploaded-file b,
  .swk-upload-progress b,
  .swk-receipt-status b,
  .swk-review-files a b,
  .swk-folder-link b,
  .swk-rubric-footer span
) { font-size: 12px; }

.access-control-row h4 { font-size: 13px; }
.admin-metric span,
.student-table-count,
.student-person-copy span,
.student-cell-sub { font-size: 11.5px; }

/* Hover depth is reserved for precise pointing devices. */
@media (hover: hover) and (pointer: fine) {
  .hero-quick-action:hover {
    background: rgba(255, 255, 255, .23);
    transform: translateY(-2px);
  }

  :where(.back-btn, .btn, .mini-btn, .admin-jump, .admin-row-actions button):not(:disabled):hover {
    transform: translateY(-2px);
  }

  body:not(.shape-circle) :where(.menu-card, .link-card):hover,
  .know-card.card-base:hover,
  .img-grid:not(.is-circle) .img-card:hover,
  .info-card:hover,
  .chip-card:hover {
    border-color: color-mix(in srgb, var(--ac, var(--maroon)) 46%, var(--border));
    box-shadow: var(--v52-shadow-md), var(--v52-inner-light);
  }

  body:not(.shape-circle):not([data-card-motion="none"]) :where(.menu-card, .link-card):hover,
  .know-card.card-base:hover,
  .img-grid:not(.is-circle) .img-card:hover,
  .info-card:hover,
  .chip-card:hover {
    transform: translateY(-5px);
  }

  .admin-jump:hover,
  .admin-jump:focus-visible {
    color: var(--maroon);
    background: color-mix(in srgb, var(--maroon-soft) 86%, var(--card));
    border-color: var(--v52-line-strong);
  }

  .admin-row-actions button:hover { box-shadow: var(--v52-shadow-xs); }

  .swk-student-card:hover {
    border-color: var(--v52-line-strong);
    box-shadow: var(--v52-shadow-md), var(--v52-inner-light);
    transform: translateY(-4px);
  }
}

:where(button, .btn, [role="button"]):active:not(:disabled) { transform: translateY(0) scale(.98); }
:where(button, .btn, input, select, textarea):disabled { opacity: .58; cursor: not-allowed; }

/* Tablet and compact desktop. */
@media (max-width: 840px) {
  .hero { padding-inline: 16px; }
  .admin-overview { border-radius: var(--v52-radius-lg); }
  .admin-metric { min-height: 72px; }
  .swk-student-list { grid-template-columns: 1fr; }
}

/* Phones, including 390px layouts. */
@media (max-width: 620px) {
  body { background-attachment: scroll; }
  main { padding-inline: 14px; }
  .hero { padding-inline: 15px; border-radius: 0 0 30px 30px; }
  .hero-top { align-items: flex-start; }
  .hbtns { gap: 6px; }
  .hero-quick-action { padding-inline: 10px; }
  .search-wrap { padding-inline: 14px; }

  body:not(.shape-circle):not([data-system-card-style="compact"]) .menu-card {
    min-height: 118px;
    padding: 14px;
  }

  body:not(.shape-circle):not([data-system-card-style="compact"]) .link-card {
    min-height: 0;
    padding: 0;
    gap: 0;
  }

  body:not(.shape-circle):not([data-system-card-style="compact"]) .link-card-body { padding: 17px; }

  .know-section-head { align-items: flex-start; }
  .know-card.card-base { border-radius: 22px; }
  .know-content { padding: 15px; }
  .know-content .know-go { min-width: 44px; min-height: 44px; }

  .admin-overview-head { display: grid; }
  .admin-version-badge { justify-self: start; }
  .admin-role-strip { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
  .admin-role-strip::-webkit-scrollbar { display: none; }
  .admin-role-chip { flex: 0 0 auto; }

  #adminArea .admin-section-head { align-items: stretch; }
  #adminArea .admin-section-head > .btn { width: 100%; }
  .admin-student-table tr { box-shadow: var(--v52-shadow-xs); }

  .swk-student-kpis,
  .swk-admin-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .swk-home-card { gap: 13px; padding: 17px; }
}

/* Narrow phones, including 320px layouts. */
@media (max-width: 390px) {
  main { padding-inline: 10px; }
  .hero { padding-inline: 12px; }
  .brand { gap: 8px; }
  .brand h1 { font-size: 16px; }
  .brand small { max-width: 126px; }
  .search-wrap { padding-inline: 10px; }
  .search-box { min-height: 56px; }

  .home-summary { display: grid; gap: 8px; }
  .admin-metrics { gap: 7px; }
  .admin-metric { padding: 11px; }

  .bottom-nav-wrap { left: 5px; right: 5px; }
  .bottom-nav { padding-inline: 5px; border-radius: 21px; }
  .nav-btn { min-height: 50px; padding-inline: 2px; }
  .nav-btn .nb-label { font-size: 11px; line-height: 1.2; }

  .swk-home-card {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .swk-home-card > button { grid-column: 1 / -1; width: 100%; }
  .swk-student-kpis > div,
  .swk-admin-kpis > div { padding: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: .01ms;
    animation-iteration-count: 1;
    scroll-behavior: auto;
    transition-duration: .01ms;
  }

  :where(
    .hero,
    .orb,
    .search-box,
    .card-base,
    .menu-card,
    .link-card,
    .know-card,
    .img-card,
    .chip-card,
    .info-card,
    .swk-student-card
  ) { transform: none; }

  .card-base::after,
  .know-glow { display: none; }
}

@media (prefers-contrast: more) {
  :root { --v52-line: color-mix(in srgb, var(--ink) 45%, var(--border)); }
  :where(.card, .card-base, button, input, select, textarea) { border-width: 2px; }
  :where(.muted, .info-label, .know-dom) { color: color-mix(in srgb, var(--muted) 66%, var(--ink)); }
}

@media (forced-colors: active) {
  :where(.card, .card-base, .bottom-nav, .admin-jumpbar) { border: 1px solid CanvasText; }
  :where(button, a[href], input, select, textarea, summary):focus-visible { outline: 3px solid Highlight; }
}

@media print {
  .bottom-nav-wrap,
  .admin-jumpbar,
  .card-actions { display: none; }

  :where(.card, .card-base, .swk-student-card) { box-shadow: none; }
}