/* NOPPON APPLICATION v50 — Professional UI polish
   Final visual layer only: no data or application behaviour is changed. */

:root {
  --v50-radius-xs: 10px;
  --v50-radius-sm: 14px;
  --v50-radius-md: 18px;
  --v50-radius-lg: 24px;
  --v50-radius-xl: 30px;
  --v50-line: color-mix(in srgb, var(--border) 72%, var(--maroon) 28%);
  --v50-line-strong: color-mix(in srgb, var(--border) 46%, var(--maroon) 54%);
  --v50-surface: color-mix(in srgb, var(--card) 96%, var(--maroon-soft));
  --v50-surface-soft: color-mix(in srgb, var(--paper) 58%, var(--card));
  --v50-shadow-1: 0 1px 2px rgba(var(--theme-deep-rgb), .05), 0 8px 24px rgba(var(--theme-deep-rgb), .065);
  --v50-shadow-2: 0 2px 7px rgba(var(--theme-deep-rgb), .07), 0 18px 42px rgba(var(--theme-deep-rgb), .11);
  --v50-shadow-3: 0 8px 20px rgba(var(--theme-deep-rgb), .12), 0 30px 72px rgba(var(--theme-deep-rgb), .16);
  --v50-focus: 0 0 0 3px var(--card), 0 0 0 6px color-mix(in srgb, var(--maroon-2) 70%, transparent);
  --v50-ease: cubic-bezier(.2, .8, .25, 1);
  --v50-fast: 160ms;
  --v50-normal: 240ms;
}

body.dark {
  --v50-line: color-mix(in srgb, var(--border) 70%, var(--maroon) 30%);
  --v50-surface: color-mix(in srgb, var(--card) 92%, var(--maroon-soft));
  --v50-surface-soft: color-mix(in srgb, var(--paper) 72%, var(--card));
  --v50-shadow-1: 0 2px 5px rgba(0, 0, 0, .24), 0 10px 28px rgba(0, 0, 0, .22);
  --v50-shadow-2: 0 4px 10px rgba(0, 0, 0, .3), 0 20px 48px rgba(0, 0, 0, .3);
  --v50-shadow-3: 0 10px 24px rgba(0, 0, 0, .4), 0 34px 78px rgba(0, 0, 0, .42);
}

html {
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 92px;
}

body {
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main { width: 100%; }

/* One visible, consistent keyboard focus language throughout the application. */
:where(
  button,
  a[href],
  input,
  select,
  textarea,
  summary,
  [tabindex]:not([tabindex="-1"])
):focus-visible {
  outline: 0;
  box-shadow: var(--v50-focus) !important;
}

: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) {
  min-height: 44px;
}

:where(.icon-btn, .back-btn, .mini-btn, .card-act, .admin-row-actions button, .admin-dialog-close) {
  min-width: 44px;
}

:where(.btn, .icon-btn, .back-btn, .mini-btn, .card-act, .nav-btn, .admin-jump) {
  transition:
    transform var(--v50-fast) var(--v50-ease),
    color var(--v50-fast) ease,
    background-color var(--v50-fast) ease,
    border-color var(--v50-fast) ease,
    box-shadow var(--v50-normal) ease;
}

:where(input, select, textarea) {
  min-height: 46px;
  border-width: 1px;
  border-radius: var(--v50-radius-sm);
}

:where(input, select, textarea):focus {
  border-color: var(--maroon-2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--maroon-2) 15%, transparent);
}

.hl-btn,
#btnOpenStudentWork { min-height: 44px; }

.ic-chip,
.theme-close,
.student-page-btn,
.calendar-filterbar button,
.calendar-view-switch button,
.calendar-month-header > button,
.calendar-month-nav button,
.research-export-btn,
.student-filter-chip {
  min-width: 44px;
  min-height: 44px;
}

body.shape-circle .card-act {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
}

/* Carousel indicators remain visually light while each control has a full touch target. */
.cover-dots {
  max-width: calc(100% - 16px);
  margin-inline: auto;
  overflow-x: auto;
  justify-content: center;
  justify-content: safe center;
  gap: 2px;
  padding-inline: 4px;
  scrollbar-width: none;
}
.cover-dots::-webkit-scrollbar { display: none; }
.cover-dot,
.cover-dot.active {
  position: relative;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  padding: 0;
  background: transparent;
  box-shadow: none;
}
.cover-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  background: rgba(255, 255, 255, .58);
  border-radius: 999px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .14);
  transform: translate(-50%, -50%);
  transition: width var(--v50-normal) var(--v50-ease), background-color var(--v50-fast) ease;
}
.cover-dot.active::before { width: 22px; background: #fff; }

/* Header and primary navigation hierarchy. */
.hero {
  border-radius: 0 0 clamp(28px, 5vw, 44px) clamp(28px, 5vw, 44px);
  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, .14), 0 24px 62px rgba(var(--theme-deep-rgb), .24);
}

.hero-top { max-width: 1160px; margin-inline: auto; }
.hero-greet { max-width: 1160px; margin-inline: auto; }
.hero-greet h2 { letter-spacing: -.025em; text-wrap: balance; }
.hero-greet p { max-width: 660px; line-height: 1.55; }

.hero-quick-action {
  min-height: 46px;
  border-radius: var(--v50-radius-sm);
}

.search-wrap { max-width: 720px; }
.search-box {
  min-height: 58px;
  border-color: color-mix(in srgb, var(--border) 65%, var(--maroon) 35%);
  border-radius: var(--v50-radius-md);
  box-shadow: var(--v50-shadow-2), inset 0 1px 0 rgba(255, 255, 255, .74);
}

.search-box:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--maroon-2) 13%, transparent), var(--v50-shadow-2);
}

.bottom-nav-wrap { z-index: 70; }
.bottom-nav {
  border-color: color-mix(in srgb, var(--border) 60%, var(--maroon) 40%);
  border-radius: 26px;
  box-shadow: var(--v50-shadow-3), inset 0 1px 0 rgba(255, 255, 255, .74);
}

.nav-btn {
  min-width: 0;
  min-height: 52px;
  border: 1px solid transparent;
  border-radius: var(--v50-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) 18%, var(--border));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .64), 0 6px 16px rgba(var(--theme-rgb), .1);
}

.nav-btn-center .uic {
  box-shadow: 0 10px 28px rgba(var(--theme-deep-rgb), .23), 0 0 0 5px var(--glass-strong), 0 0 28px rgba(var(--theme-secondary-rgb), .24);
}

/* Shared card foundation — restrained depth, clearer content hierarchy. */
:where(.card, .card-base, .home-summary, .research-panel, .student-analytics-card) {
  border-color: var(--v50-line);
  box-shadow: var(--v50-shadow-1), inset 0 1px 0 color-mix(in srgb, #fff 70%, transparent);
}

:where(.card, .research-panel, .student-analytics-card) {
  border-radius: var(--v50-radius-lg);
}

.card > h3:first-child,
.admin-section-head h3,
.submenu-head h2 {
  letter-spacing: -.022em;
  text-wrap: balance;
}

.section-label {
  margin-top: 28px;
  margin-bottom: 14px;
  color: color-mix(in srgb, var(--muted) 84%, var(--ink));
  font-weight: 600;
}

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

.section-label .sp {
  min-height: 32px;
  padding: 6px 12px;
  border: 1px solid color-mix(in srgb, var(--maroon) 15%, var(--border));
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 70%, transparent);
}

.home-summary {
  min-height: 68px;
  padding: 14px 16px;
  border-radius: var(--v50-radius-md);
}

.announce {
  border-left-width: 5px;
  border-radius: var(--v50-radius-md);
  box-shadow: var(--v50-shadow-1);
}

/* Public menu and system cards. */
body:not(.shape-circle) .menu-card,
body:not(.shape-circle) .link-card {
  border-radius: var(--v50-radius-lg);
}

body:not(.shape-circle) .menu-card {
  min-height: 170px;
  padding: 20px 16px;
  gap: 9px;
}

.menu-card .micon,
.link-card .icon,
.know-icon {
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 22%, var(--border));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .78), 0 11px 25px color-mix(in srgb, var(--ac, var(--maroon)) 15%, transparent);
}

.menu-card h3,
.link-card h3,
.know-name {
  letter-spacing: -.012em;
}

.menu-card .count,
.link-card .cat {
  min-height: 27px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

body:not(.shape-circle) .link-card {
  min-height: 224px;
  padding: 19px;
  gap: 11px;
}

.link-card .top { padding-right: 86px; }
.card-actions { top: 13px; right: 13px; gap: 7px; }
.card-act {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  box-shadow: 0 6px 16px rgba(var(--theme-deep-rgb), .08), inset 0 1px 0 rgba(255, 255, 255, .72);
}

.link-card .go {
  min-height: 46px;
  border-color: color-mix(in srgb, var(--maroon) 17%, var(--border));
}

.link-card .go .arrow { width: 32px; height: 32px; }

.know-card.card-base {
  border-color: color-mix(in srgb, var(--ac, var(--maroon)) 20%, var(--border));
  box-shadow: var(--v50-shadow-1), inset 0 1px 0 color-mix(in srgb, #fff 65%, transparent);
}

.layout-list .know-card { min-height: 82px; }
.layout-tile .know-card { min-height: 160px; }
.know-go { min-width: 32px; min-height: 32px; }

.img-card {
  border-radius: var(--v50-radius-lg);
  border-color: var(--v50-line);
  box-shadow: var(--v50-shadow-1);
}

.img-card .cap { line-height: 1.55; }

.chip-card {
  min-height: 48px;
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-sm);
  box-shadow: 0 6px 18px rgba(var(--theme-deep-rgb), .055);
}

.info-card {
  min-height: 148px;
  border-radius: var(--v50-radius-lg);
}

.submenu-head {
  min-height: 52px;
  padding-bottom: 4px;
}

.back-btn {
  border-color: var(--v50-line);
  box-shadow: 0 6px 17px rgba(var(--theme-deep-rgb), .07);
}

/* Teacher workspace: stronger grouping and scannable dense data. */
body.admin-active main { max-width: 1220px; }

.admin-overview {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--v50-radius-xl);
  box-shadow: var(--v50-shadow-3), inset 0 1px 0 rgba(255, 255, 255, .17);
}

.admin-overview h3 { font-size: clamp(21px, 3vw, 28px); letter-spacing: -.025em; }
.admin-overview p { font-size: 13px; }
.admin-metrics { gap: 10px; margin-top: 18px; }
.admin-metric {
  min-height: 76px;
  padding: 13px;
  border-radius: var(--v50-radius-sm);
  background: rgba(255, 255, 255, .115);
}
.admin-metric b { font-size: clamp(21px, 3vw, 27px); }

.admin-jumpbar {
  top: max(8px, env(safe-area-inset-top));
  gap: 8px;
  padding: 9px;
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-md);
  box-shadow: var(--v50-shadow-2), inset 0 1px 0 rgba(255, 255, 255, .72);
  scroll-padding-inline: 9px;
  scroll-snap-type: x proximity;
  overscroll-behavior-inline: contain;
}

.admin-jump {
  min-height: 44px;
  padding: 9px 13px;
  border-radius: 12px;
  scroll-snap-align: start;
}

.admin-jump:hover,
.admin-jump:focus-visible {
  color: var(--maroon);
  background: color-mix(in srgb, var(--maroon-soft) 86%, var(--card));
  border-color: var(--v50-line-strong);
}

#adminArea > :where(.card, details.card) {
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-lg);
  box-shadow: var(--v50-shadow-1), inset 0 1px 0 color-mix(in srgb, #fff 66%, transparent);
}

#adminArea .admin-section-head {
  gap: 16px;
}

#adminArea .admin-section-head p {
  max-width: 760px;
  line-height: 1.6;
}

.admin-item {
  min-height: 72px;
  gap: 13px;
  padding-block: 14px;
}

.admin-item .icon,
.admin-system-item > .icon {
  border-radius: var(--v50-radius-sm);
}

.admin-item .acts { gap: 8px; }

.mini-btn {
  border-radius: 12px;
}

.admin-link-tools,
.admin-import-panel {
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-md);
}

.admin-link-group {
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-md);
  box-shadow: 0 4px 15px rgba(var(--theme-deep-rgb), .035);
}

.admin-link-group[open] {
  border-color: var(--v50-line-strong);
  box-shadow: var(--v50-shadow-1);
}

.admin-link-group > summary { min-height: 72px; }
.admin-link-group > summary:focus-visible { border-radius: var(--v50-radius-md); }

.admin-data-metric,
.admin-foundation-panel,
.admin-health-item,
.admin-backup-row,
.admin-audit-row {
  border-color: var(--v50-line);
  box-shadow: 0 5px 16px rgba(var(--theme-deep-rgb), .04);
}

.admin-student-table-wrap {
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-md);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .65);
}

.admin-student-table tbody tr {
  transition: background-color var(--v50-fast) ease;
}

.admin-row-actions button {
  border-radius: 12px;
  transition: transform var(--v50-fast) var(--v50-ease), border-color var(--v50-fast), color var(--v50-fast), background-color var(--v50-fast);
}

.admin-dialog {
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-lg);
  box-shadow: var(--v50-shadow-3);
}

.admin-dialog-close { border-radius: 12px; }

.promotion-choice,
.system-style-choice,
.system-motion-choice,
.shape-choice,
.theme-preset {
  min-height: 96px;
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-sm);
}

/* Student work cards share the same visual rhythm as the main application. */
.swk-home-card,
.swk-student-welcome,
.swk-student-card,
.swk-admin-card,
.swk-admin-panel,
.swk-review-card {
  border-radius: var(--v50-radius-lg);
}

.swk-home-card,
.swk-student-card,
.swk-admin-panel,
.swk-review-card {
  border-color: var(--v50-line);
  box-shadow: var(--v50-shadow-1), inset 0 1px 0 color-mix(in srgb, #fff 66%, transparent);
}

.swk-student-kpis > div,
.swk-admin-kpis > div {
  min-height: 92px;
  border-color: var(--v50-line);
  border-radius: var(--v50-radius-md);
  box-shadow: 0 6px 18px rgba(var(--theme-deep-rgb), .055);
}

.swk-student-card { transition: transform var(--v50-normal) var(--v50-ease), border-color var(--v50-fast), box-shadow var(--v50-normal); }
.swk-meta-grid > span { border-color: var(--v50-line); }
.swk-card-foot button { min-height: 44px; padding-inline: 15px; }

/* Hover effects only where a precise pointing device exists. */
@media (hover: hover) and (pointer: fine) {
  :where(.menu-card, .link-card, .know-card.card-base, .img-card, .chip-card, .info-card):hover {
    border-color: color-mix(in srgb, var(--ac, var(--maroon)) 48%, var(--border));
    box-shadow: var(--v50-shadow-2), inset 0 1px 0 rgba(255, 255, 255, .72);
  }

  body:not(.shape-circle) :where(.menu-card, .link-card):hover,
  .know-card.card-base:hover,
  .img-card:hover {
    transform: translateY(-5px);
  }

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

  .swk-student-card:hover {
    transform: translateY(-4px);
    border-color: var(--v50-line-strong);
    box-shadow: var(--v50-shadow-2);
  }
}

: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; }

/* Responsive density: preserve comfortable targets while reducing decorative space. */
@media (max-width: 840px) {
  .hero { padding-inline: 16px; }
  .admin-overview { border-radius: var(--v50-radius-lg); }
  .admin-metric { min-height: 70px; }
  .swk-student-list { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  main { padding-inline: 14px; }
  .hero { border-radius: 0 0 28px 28px; }
  .hero-top { align-items: flex-start; }
  .hbtns { gap: 6px; }
  .hero-quick-action { min-width: 46px; padding-inline: 10px; }
  .search-wrap { padding-inline: 14px; }

  body:not(.shape-circle) .menu-card {
    min-height: 96px;
    padding: 14px;
  }

  body:not(.shape-circle) .link-card {
    min-height: 0;
    padding: 17px;
  }

  .link-card .top { padding-right: 82px; }
  .card-actions { top: 10px; right: 10px; }
  .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: 0 6px 20px rgba(var(--theme-deep-rgb), .055);
  }

  .admin-dialog { width: calc(100% - 16px); max-height: calc(100dvh - 16px); }
  .admin-dialog-shell { max-height: calc(100dvh - 16px); }

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

@media (max-width: 420px) {
  main { padding-inline: 11px; }
  .hero { padding-inline: 13px; }
  .brand { gap: 9px; }
  .brand h1 { font-size: 17px; }
  .brand small { max-width: 138px; }
  .search-wrap { padding-inline: 11px; }
  .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: 3px; }
  .nav-btn .nb-label { font-size: 9px; }
}

@media (max-width: 399px), (max-height: 760px) {
  .gate.show {
    align-items: flex-start;
    padding: 12px;
  }

  .gate-box {
    margin-block: auto;
    padding: 20px 17px 17px;
    border-radius: var(--v50-radius-lg);
  }

  .gate-logo {
    width: 74px;
    height: 74px;
    margin-bottom: 12px;
    border-radius: 22px;
  }

  .gate-sub { margin-bottom: 14px; }
  .gate-utility-divider { margin-top: 14px; }
  .gate-utility-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gate-utility-actions .gate-action { min-height: 112px; padding: 11px; gap: 10px; }
  .gate-action-copy small { font-size: 9.5px; }
}

/* Respect user motion preferences across CSS and JS-assisted card effects. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }

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

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

  .card-base::after,
  .hero-teacher-action::before { display: none !important; }
}

@media (prefers-contrast: more) {
  :root { --v50-line: color-mix(in srgb, var(--ink) 44%, var(--border)); }
  :where(.card, .card-base, button, input, select, textarea) { border-width: 2px; }
  .muted, .info-label, .know-dom { color: color-mix(in srgb, var(--muted) 68%, 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 !important; }
}

@media print {
  .bottom-nav-wrap,
  .admin-jumpbar,
  .card-actions { display: none !important; }
  :where(.card, .card-base, .swk-student-card) { box-shadow: none !important; }
}