:root {
  --screen-w: 1440;
  --screen-h: 900;
  --ui-scale: 1;
  --size-1: clamp(0.72rem, 0.68rem + 0.22vw, 0.88rem);
  --size-2: clamp(0.86rem, 0.8rem + 0.28vw, 1rem);
  --size-3: clamp(1rem, 0.94rem + 0.32vw, 1.14rem);
  --size-4: clamp(1.18rem, 1.04rem + 0.72vw, 1.52rem);
  --size-5: clamp(1.8rem, 1.34rem + 2.1vw, 3.3rem);
  --space-1: clamp(8px, 0.5vw + 6px, 12px);
  --space-2: clamp(12px, 0.9vw + 8px, 18px);
  --space-3: clamp(16px, 1.2vw + 10px, 24px);
  --space-4: clamp(20px, 1.7vw + 12px, 32px);
  --space-5: clamp(24px, 2vw + 16px, 40px);
  --radius-lg: clamp(24px, 1.4vw + 18px, 34px);
  --radius-md: clamp(16px, 1vw + 12px, 24px);
  --radius-sm: 14px;
  --control-h: clamp(42px, 3vw + 26px, 54px);
  --shadow: 0 28px 60px rgba(0, 0, 0, 0.34);
  --bg: #040812;
  --bg-soft: rgba(10, 16, 31, 0.78);
  --panel: rgba(9, 15, 28, 0.72);
  --panel-strong: rgba(13, 22, 41, 0.92);
  --line: rgba(136, 175, 255, 0.18);
  --line-strong: rgba(163, 197, 255, 0.34);
  --text: #eef5ff;
  --muted: #9baac7;
  --accent: #8fd6ff;
  --accent-strong: #69f2ff;
  --accent-warm: #ffca7d;
  --success: #9deebd;
  --danger: #ff9999;
}

html[data-theme="light"] {
  --bg: #eef3fb;
  --bg-soft: rgba(248, 251, 255, 0.9);
  --panel: rgba(255, 255, 255, 0.76);
  --panel-strong: rgba(255, 255, 255, 0.95);
  --line: rgba(46, 85, 151, 0.12);
  --line-strong: rgba(42, 92, 169, 0.22);
  --text: #13233e;
  --muted: #607292;
  --accent: #0d67b8;
  --accent-strong: #00a8cb;
  --accent-warm: #f5a244;
  --success: #258856;
  --danger: #c9505d;
  --shadow: 0 24px 50px rgba(82, 96, 131, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: "Manrope", sans-serif;
  background:
    radial-gradient(circle at 15% 0%, rgba(104, 160, 255, 0.18), transparent 36%),
    radial-gradient(circle at 90% 90%, rgba(255, 193, 108, 0.12), transparent 32%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 30%),
    var(--bg);
}

body {
  position: relative;
  overflow-x: hidden;
}

body.page-ready .panel,
body.page-ready .metric-card,
body.page-ready .class-card,
body.page-ready .leaderboard-item {
  animation: settle-in 380ms ease-out both;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.space-bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.nebula,
.aurora-band {
  position: absolute;
  filter: blur(18px);
}

.nebula {
  border-radius: 999px;
  opacity: 0.45;
}

.nebula-a {
  top: -8%;
  left: -4%;
  width: 34rem;
  height: 34rem;
  background: radial-gradient(circle, rgba(105, 162, 255, 0.3), transparent 68%);
}

.nebula-b {
  right: -10%;
  bottom: -10%;
  width: 30rem;
  height: 30rem;
  background: radial-gradient(circle, rgba(255, 188, 98, 0.18), transparent 70%);
}

.nebula-c {
  top: 38%;
  left: 48%;
  width: 22rem;
  height: 22rem;
  background: radial-gradient(circle, rgba(77, 235, 255, 0.12), transparent 72%);
}

.aurora-band {
  width: 42vw;
  height: 8vw;
  min-width: 320px;
  background: linear-gradient(90deg, transparent, rgba(105, 242, 255, 0.18), rgba(255, 197, 121, 0.14), transparent);
  opacity: 0.45;
}

.aurora-a {
  top: 16%;
  right: -8%;
  transform: rotate(-15deg);
  animation: drift 16s ease-in-out infinite;
}

.aurora-b {
  bottom: 18%;
  left: -6%;
  transform: rotate(9deg);
  animation: drift 18s ease-in-out infinite reverse;
}

.grid-horizon {
  position: absolute;
  inset: auto -12% -9rem;
  height: 18rem;
  background:
    linear-gradient(transparent, rgba(125, 162, 255, 0.08)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 54px);
  transform: perspective(560px) rotateX(72deg);
  transform-origin: top;
  opacity: 0.62;
}

.starfield {
  position: absolute;
  inset: 0;
}

.star {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
  animation: twinkle var(--duration) ease-in-out infinite;
}

.app-shell {
  position: relative;
  z-index: 1;
  padding: var(--space-3);
}

.topbar,
main {
  width: min(1500px, 100%);
  margin-inline: auto;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
}

.brand {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  min-width: 0;
}

.brand h1,
.section-header h3,
.hero-panel h2,
.modal-header h3,
.class-editor h3,
.export-card h3 {
  margin: 0;
  font-family: "Barlow Condensed", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.brand h1 {
  font-size: clamp(2rem, 1.28rem + 2vw, 3.1rem);
  line-height: 0.92;
}

.brand-copy {
  margin: 6px 0 0;
  font-size: var(--size-2);
  color: var(--muted);
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: clamp(58px, 4vw + 38px, 84px);
  height: clamp(58px, 4vw + 38px, 84px);
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.2), transparent 50%),
    linear-gradient(135deg, rgba(108, 222, 255, 0.25), rgba(255, 197, 116, 0.1));
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span {
  content: "";
  position: absolute;
  border-radius: 999px;
}

.brand-mark::before {
  inset: 16px;
  border: 2px solid rgba(255, 255, 255, 0.82);
}

.brand-mark::after {
  inset: 7px;
  border: 1px dashed rgba(135, 180, 255, 0.34);
}

.brand-mark span {
  width: 4px;
  height: 58%;
  background: linear-gradient(180deg, transparent, var(--accent-strong), transparent);
  transform: rotate(32deg);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: var(--size-1);
  font-weight: 800;
}

.topbar-actions {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.main-nav,
.segmented {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  align-items: center;
}

.nav-btn,
.ghost-btn,
.primary-btn,
.theme-toggle,
.icon-btn,
.theme-swatch {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: var(--control-h);
  border: 0;
  border-radius: 999px;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.nav-btn,
.ghost-btn,
.primary-btn,
.theme-toggle,
.segmented button {
  padding: 0 clamp(14px, 1.2vw + 10px, 20px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: var(--size-2);
  font-weight: 800;
  line-height: 1.15;
}

.nav-btn {
  background: transparent;
  color: var(--muted);
}

.segmented button {
  background: transparent;
  color: var(--muted);
  border: 0;
}

.nav-btn.active,
.nav-btn:hover,
.segmented button.active {
  background: linear-gradient(135deg, rgba(114, 212, 255, 0.2), rgba(255, 196, 112, 0.14));
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.ghost-btn,
.theme-toggle,
.icon-btn,
select,
input,
textarea {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
}

.ghost-btn:hover,
.primary-btn:hover,
.theme-toggle:hover,
.icon-btn:hover,
.theme-swatch:hover,
.interactive-panel:hover {
  transform: translateY(-1px);
}

.primary-btn {
  color: #08111d;
  background: linear-gradient(135deg, var(--accent-strong), #a6f0ff 58%, #ffd79b);
  box-shadow: 0 18px 28px rgba(0, 180, 255, 0.15);
}

.icon-btn {
  width: var(--control-h);
  padding: 0;
}

.theme-toggle {
  gap: 10px;
}

.theme-toggle-track {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-warm), var(--accent));
  box-shadow: 0 0 14px rgba(102, 193, 255, 0.38);
}

.theme-toggle-label {
  letter-spacing: 0.12em;
  color: var(--muted);
  font-size: var(--size-1);
}

main {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.panel,
.metric-card,
.class-card,
.leaderboard-item,
.insight-card,
.recycle-item,
.settings-card,
.student-row,
.theme-swatch,
.preview-shell {
  position: relative;
  overflow: hidden;
  min-width: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.interactive-panel {
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.interactive-panel:hover {
  border-color: var(--line-strong);
  box-shadow: 0 24px 48px rgba(18, 27, 44, 0.2);
}

.hero-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.95fr);
  gap: var(--space-4);
  padding: var(--space-4);
}

.hero-panel h2 {
  font-size: var(--size-5);
  line-height: 0.9;
  margin-bottom: 14px;
}

.hero-copy {
  margin: 0;
  color: var(--muted);
  font-size: var(--size-3);
  line-height: 1.8;
  max-width: 56rem;
}

.hero-metrics,
.dashboard-grid,
.workspace,
.settings-grid,
.export-layout {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}

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

.metric-card {
  min-height: clamp(116px, 16vh, 170px);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.metric-card span {
  color: var(--muted);
  font-size: var(--size-2);
}

.metric-card strong {
  font-family: "Barlow Condensed", sans-serif;
  font-size: clamp(2.1rem, 1.5rem + 2vw, 3.2rem);
  letter-spacing: 0.06em;
}

.panel-stack,
.class-list-panel,
.class-detail-panel {
  padding: var(--space-4);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.section-header.split {
  align-items: center;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
  min-width: 0;
}

.toolbar > *,
.period-controls > * {
  flex: 0 1 auto;
}

select,
input,
textarea {
  width: 100%;
  border-radius: calc(var(--radius-sm) + 2px);
  outline: none;
  padding: 0 14px;
  font-size: var(--size-2);
}

select,
input {
  min-height: var(--control-h);
}

textarea {
  padding: 12px 14px;
  min-height: 88px;
  resize: vertical;
}

select:focus,
input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(103, 194, 255, 0.12);
}

.dashboard-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.85fr);
}

.leaderboard,
.insight-column,
.class-cards,
.student-list,
.custom-fields-list,
.recycle-list {
  display: grid;
  gap: var(--space-2);
}

.leaderboard-item,
.class-card,
.insight-card,
.settings-card,
.student-row,
.recycle-item,
.theme-swatch {
  padding: var(--space-3);
}

.leaderboard-head,
.class-card-head,
.student-row,
.recycle-item,
.export-card-head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  align-items: center;
}

.leaderboard-item {
  display: grid;
  grid-template-columns: clamp(56px, 4vw, 68px) minmax(0, 1fr) auto;
  align-items: center;
}

.rank-badge {
  width: clamp(52px, 4vw, 62px);
  height: clamp(52px, 4vw, 62px);
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-family: "Barlow Condensed", sans-serif;
  font-size: clamp(1.4rem, 1.1rem + 0.8vw, 1.8rem);
  background: linear-gradient(160deg, rgba(98, 193, 255, 0.2), rgba(255, 195, 109, 0.16));
  border: 1px solid var(--line);
}

.leaderboard-meta strong,
.class-card strong,
.recycle-item strong {
  display: block;
  font-size: var(--size-3);
  margin-bottom: 4px;
}

.leaderboard-meta span,
.class-card p,
.student-stats,
.tiny-copy,
.trash-meta,
.leaderboard-head p,
.export-meta,
.export-row-copy {
  color: var(--muted);
  line-height: 1.65;
}

.leaderboard-score {
  text-align: right;
}

.leaderboard-score strong {
  display: block;
  font-family: "Barlow Condensed", sans-serif;
  font-size: clamp(1.7rem, 1.2rem + 1.3vw, 2.3rem);
}

.workspace {
  grid-template-columns: minmax(340px, 420px) minmax(0, 1fr);
}

.class-card.active {
  border-color: var(--accent);
  box-shadow: 0 18px 36px rgba(90, 170, 255, 0.14);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--size-1);
}

.class-detail-actions,
.student-actions,
.trash-actions {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.class-editor {
  display: grid;
  gap: var(--space-2);
}

.class-title-row,
.add-student-inline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-1);
  align-items: center;
}

.student-row {
  grid-template-columns: minmax(0, 1fr) auto;
  display: grid;
}

.period-strip {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  align-items: center;
  padding: calc(var(--space-2) + 2px) var(--space-3);
  margin-bottom: var(--space-3);
}

.period-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
}

#view-records .section-header.split {
  align-items: center;
}

#view-records .toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 320px) auto auto auto;
  justify-content: end;
  align-items: center;
  gap: var(--space-1);
  width: min(100%, 880px);
  padding: 8px;
  border-radius: calc(var(--radius-md) + 8px);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

#view-records .toolbar > * {
  min-width: 0;
}

#recordClassSelect {
  width: 100%;
  min-width: 0;
  margin: 0;
}

#modeSwitch {
  flex: 0 0 auto;
  min-height: var(--control-h);
  padding: 5px;
  gap: 4px;
}

#modeSwitch button {
  min-width: 96px;
  min-height: calc(var(--control-h) - 10px);
  padding-inline: 16px;
  border: 0;
  background: transparent;
  box-shadow: none;
}

#openSettingsBtn,
#exportImageBtn,
#prevPeriodBtn,
#todayPeriodBtn,
#nextPeriodBtn {
  min-width: 108px;
}

.period-summary {
  text-align: right;
  display: grid;
  gap: 6px;
  justify-items: end;
}

.period-summary strong {
  font-size: var(--size-4);
}

.period-summary span {
  color: var(--muted);
  font-size: var(--size-2);
}

.nav-btn::before,
.ghost-btn::before,
.primary-btn::before,
.theme-toggle::before,
.icon-btn::before,
.theme-swatch::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 8px;
  width: 16px;
  height: 16px;
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 245, 207, 0.95), rgba(255, 166, 62, 0.86) 52%, rgba(255, 110, 55, 0.12) 78%, transparent 100%);
  transform: translate(-50%, 14px) scale(0.2);
  opacity: 0;
  filter: blur(0.4px);
  pointer-events: none;
  z-index: 0;
}

.nav-btn::after,
.ghost-btn::after,
.primary-btn::after,
.theme-toggle::after,
.icon-btn::after,
.theme-swatch::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 6px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 244, 214, 0.9), rgba(111, 227, 255, 0.08));
  transform: translate(-50%, 12px) scaleY(0.2);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
}

.nav-btn > *,
.ghost-btn > *,
.primary-btn > *,
.theme-toggle > *,
.icon-btn > *,
.theme-swatch > * {
  position: relative;
  z-index: 1;
}

.button-ignite {
  animation: rocket-hop 520ms cubic-bezier(.2, .9, .28, 1);
}

.button-ignite::before {
  animation: rocket-flame 520ms ease-out;
}

.button-ignite::after {
  animation: rocket-trail 520ms ease-out;
}

.record-table-wrap {
  display: block;
  overflow: auto;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  -webkit-overflow-scrolling: touch;
  contain: inline-size;
}

.record-table {
  width: 100%;
  min-width: 900px;
  border-collapse: collapse;
}

.record-table th,
.record-table td {
  padding: 14px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.record-table th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--panel-strong);
  color: var(--accent);
  text-transform: uppercase;
  font-size: var(--size-1);
  letter-spacing: 0.08em;
}

.record-table td textarea {
  min-height: 92px;
}

.cell-note {
  font-size: var(--size-1);
  color: var(--muted);
}

.empty-panel,
.empty-card {
  padding: clamp(28px, 4vw, 44px) 18px;
  border: 1px dashed var(--line);
  border-radius: calc(var(--radius-lg) - 6px);
  text-align: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: var(--space-3);
  background: rgba(2, 5, 12, 0.56);
  backdrop-filter: blur(12px);
  z-index: 60;
}

.modal-backdrop.active {
  display: grid;
}

.modal {
  width: min(680px, 100%);
  max-height: min(92vh, 960px);
  overflow: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.modal-wide {
  width: min(1100px, 100%);
}

.modal-ultra {
  width: min(1320px, 100%);
}

.modal-header,
.modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
}

.modal-header {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--panel-strong);
  border-bottom: 1px solid var(--line);
}

.modal-footer {
  justify-content: flex-end;
  border-top: 1px solid var(--line);
}

.modal-body {
  padding: var(--space-4);
}

.field,
.check-line {
  display: grid;
  gap: 8px;
  margin-bottom: var(--space-2);
}

.check-line {
  grid-template-columns: auto 1fr;
  align-items: center;
  margin-bottom: 12px;
}

.inline-fields {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.settings-grid {
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
}

.custom-field-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) 140px minmax(0, 1fr) auto auto;
  gap: var(--space-1);
  align-items: center;
}

.export-layout {
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
}

.export-controls {
  display: grid;
  gap: var(--space-2);
}

.theme-picker {
  display: grid;
  gap: var(--space-1);
}

.theme-swatch {
  width: 100%;
  display: grid;
  gap: 8px;
  min-height: 96px;
  align-items: start;
  text-align: left;
}

.theme-swatch.active {
  border-color: var(--accent);
  box-shadow: 0 18px 36px rgba(90, 170, 255, 0.14);
}

.theme-swatch strong {
  font-size: var(--size-3);
}

.theme-preview-bar {
  display: flex;
  gap: 8px;
}

.theme-preview-bar i {
  display: block;
  flex: 1;
  height: 10px;
  border-radius: 999px;
}

.export-preview-panel {
  min-width: 0;
}

.preview-shell {
  display: grid;
  place-items: center;
  padding: var(--space-4);
  min-height: min(72vh, 860px);
}

.preview-shell #exportPreviewMount {
  width: min(100%, 460px);
}

.export-card {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 0;
  padding: 28px 24px;
  color: #f7fbff;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
  box-shadow: 0 34px 72px rgba(0, 0, 0, 0.35);
}

.export-card::before,
.export-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.export-card::before {
  inset: 0;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.16), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 24%);
}

.export-card::after {
  inset: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.export-card.theme-nebula {
  background:
    radial-gradient(circle at top, rgba(112, 203, 255, 0.24), transparent 28%),
    linear-gradient(180deg, #071221, #0b1a31 56%, #10192a);
}

.export-card.theme-lunar {
  color: #162237;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.44), transparent 26%),
    linear-gradient(180deg, #f4f7fb, #dde5f2 58%, #d4dbe7);
}

.export-card.theme-lunar::after {
  border-color: rgba(32, 56, 91, 0.12);
}

.export-card.theme-solar {
  background:
    radial-gradient(circle at top, rgba(255, 239, 174, 0.26), transparent 28%),
    linear-gradient(180deg, #26140a, #4a2713 48%, #130d14);
}

.export-card-head {
  position: relative;
  z-index: 1;
  align-items: flex-start;
}

.export-eyebrow {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.8;
}

.export-card h3 {
  font-size: clamp(2rem, 1.3rem + 1.4vw, 2.7rem);
  line-height: 0.92;
}

.export-meta {
  margin: 6px 0 0;
  font-size: 0.92rem;
}

.export-student-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  align-content: start;
}

.export-student-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 54px;
  gap: 10px;
  padding: 12px 12px 13px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.theme-lunar .export-student-item {
  background: rgba(18, 42, 74, 0.05);
  border-color: rgba(20, 46, 84, 0.09);
}

.student-name-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 5px;
}

.student-name-line strong {
  font-size: 1rem;
}

.export-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 0.74rem;
  opacity: 0.86;
}

.theme-lunar .export-pill {
  border-color: rgba(20, 46, 84, 0.14);
}

.export-count {
  display: grid;
  place-items: center;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 2rem;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.theme-lunar .export-count {
  border-left-color: rgba(20, 46, 84, 0.12);
}

.export-footer {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 8px;
}

.export-footer p {
  margin: 0;
  font-size: 0.84rem;
  opacity: 0.78;
  line-height: 1.65;
}

.toast-wrap {
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: grid;
  gap: 10px;
  z-index: 70;
}

.toast {
  min-width: 240px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.toast.error {
  border-color: rgba(255, 96, 96, 0.4);
}

.export-canvas {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 430px;
}

@keyframes twinkle {
  0%, 100% {
    opacity: 0.12;
    transform: scale(0.9);
  }
  50% {
    opacity: var(--max-opacity);
    transform: scale(1.35);
  }
}

@keyframes drift {
  0%, 100% {
    transform: translate3d(0, 0, 0) rotate(-14deg);
  }
  50% {
    transform: translate3d(2.4rem, -1rem, 0) rotate(-10deg);
  }
}

@keyframes settle-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes rocket-hop {
  0% { transform: translateY(0); }
  20% { transform: translateY(-2px); }
  45% { transform: translateY(-7px); }
  70% { transform: translateY(-3px); }
  100% { transform: translateY(0); }
}

@keyframes rocket-flame {
  0% {
    opacity: 0;
    transform: translate(-50%, 14px) scale(0.2);
  }
  16% {
    opacity: 0.95;
    transform: translate(-50%, 8px) scale(0.9);
  }
  55% {
    opacity: 0.55;
    transform: translate(-50%, 16px) scale(1.2);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, 26px) scale(0.5);
  }
}

@keyframes rocket-trail {
  0% {
    opacity: 0;
    transform: translate(-50%, 12px) scaleY(0.2);
  }
  18% {
    opacity: 0.8;
    transform: translate(-50%, 16px) scaleY(1.3);
  }
  70% {
    opacity: 0.18;
    transform: translate(-50%, 28px) scaleY(1.8);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, 34px) scaleY(0.4);
  }
}

@media (max-width: 1220px) {
  .hero-panel,
  .dashboard-grid,
  .workspace,
  .settings-grid,
  .export-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .app-shell {
    padding: 14px;
  }

  .topbar,
  .panel-stack,
  .class-list-panel,
  .class-detail-panel,
  .modal-body,
  .modal-header,
  .modal-footer {
    padding-inline: var(--space-3);
  }

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

  .topbar-actions,
  .section-header,
  .section-header.split,
  .period-strip {
    flex-direction: column;
    align-items: stretch;
  }

  .main-nav {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .nav-btn {
    padding-inline: 10px;
  }

  .toolbar,
  .class-title-row,
  .add-student-inline,
  .student-row,
  .custom-field-grid {
    grid-template-columns: 1fr;
  }

  #view-records .toolbar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: stretch;
    width: 100%;
  }

  #recordClassSelect,
  #modeSwitch {
    grid-column: 1 / -1;
  }

  .period-controls {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .toolbar > *,
  .period-controls > * {
    width: 100%;
  }

  .period-summary {
    text-align: left;
    justify-items: start;
  }

  .record-table {
    min-width: 680px;
  }

  .inline-fields {
    grid-template-columns: 1fr;
  }

  .preview-shell {
    padding: var(--space-2);
  }
}