:root {
  --ink: #1d2b27;
  --muted: #6d7b76;
  --paper: #f6f3e9;
  --card: #fffefa;
  --green: #176b55;
  --lime: #ddec9c;
  --red: #b74738;
  --line: #d9ddd4;
}

/* Base elements and application shell */
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "DM Sans", sans-serif;
}
button,
input,
textarea,
select {
  font: inherit;
}
button {
  cursor: pointer;
}
.shell {
  max-width: 1160px;
  margin: auto;
  padding: 0 24px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
}
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.auth-page { position: relative; }
.language-corner { position: absolute; top: 24px; right: 24px; z-index: 2; }
.language-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 32px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--card);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  box-shadow: 0 3px 12px #243a2e12;
}
.language-pill:hover { border-color: var(--green); color: var(--ink); }
.language-pill:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.brand {
  font-family: Fraunces, serif;
  font-size: 25px;
}
.brand i {
  display: inline-block;
  width: 13px;
  height: 13px;
  background: var(--lime);
  border-radius: 4px;
  transform: rotate(12deg);
  margin-right: 9px;
}
.nav {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.nav button,
.ghost {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 9px 12px;
  border-radius: 9px;
}
.nav button { display: inline-flex; align-items: center; gap: 7px; }
.nav .logout-button { justify-content: center; width: 44px; height: 44px; padding: 0; }
.logout-label { display: none; }
.admin-request-badge { display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 99px; background: var(--red); color: white; font-size: 11px; font-weight: 700; line-height: 1; }
.nav button.active,
.nav button:hover {
  background: #e7eadf;
  color: var(--ink);
}

/* Shared controls and content cards */
.primary,
.danger {
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  background: var(--green);
  color: white;
  font-weight: 700;
}
.danger {
  background: var(--red);
}
.hero {
  padding: 64px 0 44px;
  max-width: 680px;
}
.eyebrow {
  color: var(--green);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
}
h1,
h2 {
  font-family: Fraunces, serif;
  margin: 0.3em 0;
}
h1 {
  font-size: clamp(42px, 7vw, 75px);
  line-height: 0.98;
}
h2 {
  font-size: 32px;
}
.lead {
  font-size: 19px;
  color: var(--muted);
  line-height: 1.6;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 16px;
}
.panel,
.tile {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 5px 20px #243a2e0b;
}
.tile {
  min-height: 175px;
  display: flex;
  flex-direction: column;
}
.tile h3 {
  margin: 0 0 7px;
  font-size: 20px;
}
.tile p {
  color: var(--muted);
  margin: 0 0 15px;
  flex: 1;
}
.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.between {
  justify-content: space-between;
}
.collection-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.collection-row {
  display: flex;
  align-items: center;
  gap: 24px;
}
.collection-details {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}
.collection-details h3 {
  margin: 0;
  font-size: 20px;
}
.collection-details p {
  margin: 8px 0 0;
  color: var(--muted);
}
.collection-actions {
  position: relative;
  flex-shrink: 0;
  justify-content: flex-end;
  margin-left: auto;
}
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
}
.icon-button.ghost:hover {
  background: #e7eadf;
  color: var(--ink);
}
.icon-button.delete-button {
  color: var(--red);
}
.icon-button.delete-button:hover {
  background: #fae5e1;
  color: var(--red);
}
.icon-button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}
.navigation {
  position: relative;
}
.navigation-toggle,
.collection-menu-toggle,
.collection-action-label {
  display: none;
}
.muted {
  color: var(--muted);
}
.pill {
  font-size: 12px;
  background: #e9eddc;
  padding: 5px 9px;
  border-radius: 99px;
}
.form {
  display: grid;
  gap: 13px;
}
.question-input {
  position: relative;
}
.form .question-input input {
  padding-right: 52px;
}
.question-input .icon-button {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
}
.question-preview {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}
.question-preview img {
  max-width: 60%;
}
button:disabled {
  cursor: wait;
  opacity: 0.6;
}
.options button img {
  display: block;
  margin: 0 auto 8px;
}
.form input,
.form textarea,
.form select {
  width: 100%;
  border: 1px solid var(--line);
  background: white;
  border-radius: 10px;
  padding: 12px;
  outline: none;
}
.form input:focus,
.form textarea:focus {
  border-color: var(--green);
}

/* Dialogs and study content shared by all modes */
.auth {
  max-width: 430px;
  margin: 60px auto;
}
.registration-guidance { margin: 0 0 4px; padding: 12px 14px; border-left: 3px solid var(--green); border-radius: 0 9px 9px 0; background: #edf2e8; color: var(--muted); line-height: 1.5; }
.account-submitted { padding-top: 8px; text-align: center; }
.account-submitted-icon { display: grid; place-items: center; width: 54px; height: 54px; margin: 14px auto; border-radius: 50%; background: #dcebdc; color: var(--green); font-size: 28px; font-weight: 700; }
.account-submitted h3 { margin: 8px 0; font-size: 21px; }
.account-submitted p { line-height: 1.5; overflow-wrap: anywhere; }
.account-submitted .primary { margin-top: 8px; }
.notice {
  padding: 12px 15px;
  background: #f4dcd4;
  color: #7c271e;
  border-radius: 10px;
  margin: 12px 0;
}
.success {
  background: #dcebdc;
  color: #215d31;
}
.modal {
  position: fixed;
  inset: 0;
  background: #1d2b2788;
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 10;
}
.modal > .panel {
  width: min(500px, 100%);
  max-height: 90vh;
  overflow: auto;
}
.modal [hidden] {
  display: none;
}
.editor-tabs {
  display: flex;
  gap: 8px;
  margin: 16px 0;
  border-bottom: 1px solid var(--line);
}
#cards-panel-edit { position: relative; }
.editor-card {
  position: relative;
  padding-left: 48px;
  padding-right: 105px;
  overflow-wrap: anywhere;
}
.card-grip {
  position: absolute;
  top: 12px;
  left: 4px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 44px;
  padding: 0;
  cursor: grab;
  touch-action: none;
  user-select: none;
}
.card-grip:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
.editor-card.dragging {
  border: 2px dotted var(--green);
  background: color-mix(in srgb, var(--green) 6%, var(--card));
  box-shadow: none;
}
.editor-card.dragging > * { visibility: hidden; }
.editor-card.dragging .card-grip { visibility: visible; opacity: 0; }
.card-drag-overlay {
  position: fixed;
  z-index: 100;
  pointer-events: none;
  background: var(--card);
  outline: 2px solid var(--green);
  box-shadow: 0 14px 32px #1d2b2733;
  will-change: transform;
}
.editor-card.dragging .card-grip { cursor: grabbing; }
.card-grip:disabled { cursor: default; opacity: 0.5; }
.card-active {
  position: absolute;
  top: 18px;
  right: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
}
.card-active input {
  appearance: none;
  width: 26px;
  height: 26px;
  margin: 0;
  border: 2px solid var(--line);
  border-radius: 7px;
  background: var(--card);
  display: grid;
  place-content: center;
  cursor: pointer;
}
.card-active input:checked {
  background: var(--green);
  border-color: var(--green);
}
.card-active input:checked::after {
  content: "";
  width: 6px;
  height: 12px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: translateY(-2px) rotate(45deg);
}
.card-active input:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}
.card-active input:disabled {
  opacity: 0.6;
  cursor: wait;
}
.editor-tabs button {
  flex: 1;
  padding: 12px;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--muted);
}
.editor-tabs button[aria-selected="true"] {
  border-bottom-color: var(--green);
  color: var(--green);
  font-weight: 700;
}
.editor-tabs button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: -2px;
}
.study {
  max-width: 700px;
  margin: 30px auto;
}
.study-card {
  text-align: center;
  padding: 45px 25px;
  min-height: 310px;
}
.study-card img,
.thumb {
  max-width: 100%;
  max-height: 100px;
  border-radius: 12px;
  object-fit: cover;
}
.question {
  font-family: Fraunces, serif;
  font-size: 30px;
}
.answer {
  font-size: 22px;
  color: var(--green);
  margin: 25px;
}
.options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.options button {
  padding: 14px;
  border: 1px solid var(--line);
  background: white;
  border-radius: 10px;
}
.options button.selected {
  background: var(--lime);
  border-color: var(--green);
}
.section-head {
  margin: 28px 0 18px;
}
.empty {
  text-align: center;
  padding: 60px;
  color: var(--muted);
}

/* Administration */
.admin-page { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 32px; align-items: start; }
.admin-sidebar { position: sticky; top: 20px; min-height: 420px; padding: 26px 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.admin-sidebar h2 { margin-bottom: 24px; }
.admin-sidebar nav { display: grid; gap: 6px; }
.admin-sidebar nav button { display: flex; justify-content: space-between; align-items: center; width: 100%; min-height: 46px; padding: 10px 12px; border: 0; border-radius: 10px; background: transparent; color: var(--muted); text-align: left; }
.admin-sidebar nav button:hover, .admin-sidebar nav button.active { background: #e7eadf; color: var(--ink); font-weight: 700; }
.admin-count { min-width: 28px; padding: 3px 7px; border-radius: 99px; background: #dfe5d4; text-align: center; font-size: 12px; }
.admin-sidebar-toggle { display: none; align-items: center; gap: 8px; width: fit-content; }
.admin-content { min-width: 0; }
.admin-content .section-head p { margin: 8px 0 0; }
.admin-table-wrap { padding: 0; overflow: hidden; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.admin-table th { background: #edf0e7; color: var(--muted); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.admin-table tr:last-child td { border-bottom: 0; }
.admin-table td:first-child strong { margin-right: 8px; }
.admin-table select { min-width: 100px; padding: 8px 28px 8px 10px; border: 1px solid var(--line); border-radius: 9px; background: white; color: var(--ink); }
.admin-table select:disabled { background: #edf0e7; color: var(--muted); }
.status { display: inline-flex; align-items: center; min-height: 30px; padding: 5px 10px; border: 1px solid transparent; border-radius: 99px; font-size: 12px; font-weight: 700; }
button.status.pending { border-color: #d7a33c; background: #fff3d5; color: #76510c; }
button.status.pending:hover { background: #f9e4ae; }
.status.approved { background: #e4f1e8; color: var(--green); }
.admin-request-actions { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
button.status.rejected { border-color: #d9a29a; background: #f8e7e3; color: var(--red); }
button.status.rejected:hover { background: #f1d2cc; }
.admin-collection-groups { display: grid; gap: 18px; }
.admin-owner-section { padding: 4px 0 18px; border-bottom: 1px solid var(--line); }
.admin-owner-section:last-child { border-bottom: 0; }
.admin-owner-title { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 14px; }
.admin-owner-title h3 { margin: 0 0 3px; font-family: Fraunces, serif; font-size: 24px; }
.admin-owner-title > div > span { font-size: 14px; }
.admin-collection-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.admin-collection-tile { min-width: 0; min-height: 150px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--ink); text-align: left; box-shadow: 0 5px 20px #243a2e0b; transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease; }
.admin-collection-tile:hover { transform: translateY(-2px); border-color: var(--green); box-shadow: 0 9px 24px #243a2e17; }
.admin-collection-tile:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.admin-collection-tile-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.admin-collection-tile h4 { margin: 0; font-size: 18px; overflow-wrap: anywhere; }
.admin-collection-tile p { min-height: 42px; margin: 10px 0 16px; color: var(--muted); overflow-wrap: anywhere; }
.admin-collection-detail { padding: 24px; }
.admin-collection-detail h3 { margin: 4px 0; font-family: Fraunces, serif; font-size: 27px; }
.admin-back { margin: 0 0 10px; color: var(--green); font-weight: 700; }
.admin-owner-group { padding: 0; overflow: hidden; }
.admin-owner-head, .admin-collection-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }
.admin-owner-head { padding: 20px 22px; background: #edf0e7; }
.admin-owner-head h3, .admin-collection h4 { margin: 0 0 4px; }
.admin-collection { padding: 22px; border-top: 1px solid var(--line); }
.admin-collection-head p { margin: 5px 0 0; }
.admin-card-list { display: grid; gap: 8px; margin: 18px 0; }
.admin-card-preview { display: grid; grid-template-columns: 28px auto minmax(0, 1fr); align-items: center; gap: 12px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.admin-card-preview:not(:has(img)) { grid-template-columns: 28px minmax(0, 1fr); }
.admin-card-number { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: #e9eddc; color: var(--green); font-size: 12px; font-weight: 700; }
.admin-card-preview img { width: 48px; height: 48px; border-radius: 8px; object-fit: cover; }
.admin-card-preview div { min-width: 0; overflow-wrap: anywhere; }
.admin-card-preview strong, .admin-card-preview div span { display: block; }
.admin-card-preview div span { margin-top: 3px; color: var(--muted); font-size: 14px; }
.admin-collection-actions { justify-content: flex-end; }
@media (max-width: 650px) {
  .language-corner { top: 16px; right: 16px; }
  .auth-page .hero { padding-top: 76px; }
  .topbar-actions { gap: 6px; }
  .collection-row {
    align-items: flex-start;
    gap: 16px;
  }
  .collection-actions {
    margin-left: 0;
  }
  .collection-menu-toggle {
    display: inline-flex;
  }
  .collection-action-items {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 2;
    width: 170px;
    padding: 6px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--card);
    box-shadow: 0 8px 24px #243a2e26;
  }
  .collection-actions.is-open .collection-action-items {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
  .collection-action-items .icon-button {
    width: 100%;
    justify-content: flex-start;
    gap: 12px;
    padding: 0 12px;
  }
  .collection-action-label {
    display: inline;
  }
  .topbar {
    align-items: center;
    gap: 12px;
  }
  .navigation-toggle {
    display: inline-flex;
  }
  .navigation .nav {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 5;
    width: min(220px, calc(100vw - 32px));
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--card);
    box-shadow: 0 8px 24px #243a2e26;
  }
  .navigation.is-open .nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .navigation .nav button {
    min-height: 44px;
    text-align: left;
  }
  .navigation .nav .logout-button {
    justify-content: flex-start;
    width: auto;
    height: auto;
    padding: 9px 12px;
  }
  .logout-label { display: inline; }
  .navigation .nav button:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: -2px;
  }
  .hero {
    padding-top: 35px;
  }
  .options {
    grid-template-columns: 1fr;
  }
  .shell {
    padding: 0 16px;
  }
  .admin-page { display: block; }
  .admin-sidebar-toggle { display: inline-flex; margin: 12px 0 0; }
  .admin-sidebar { display: none; position: static; min-height: 0; margin-top: 10px; padding: 18px; }
  .admin-sidebar.is-open { display: block; }
  .admin-sidebar h2 { margin-bottom: 12px; }
  .admin-table-wrap { padding: 0 16px; background: transparent; border: 0; box-shadow: none; }
  .admin-table, .admin-table tbody, .admin-table tr, .admin-table td { display: block; width: 100%; }
  .admin-table thead { display: none; }
  .admin-table tr { margin-bottom: 14px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
  .admin-table td { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 10px; padding: 8px 0; border: 0; overflow-wrap: anywhere; }
  .admin-table td::before { content: attr(data-label); color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
  .admin-owner-head, .admin-collection-head { align-items: flex-start; }
  .admin-owner-title { align-items: flex-start; }
  .admin-collection-grid { grid-template-columns: 1fr; }
  .admin-owner-head { padding: 16px; }
  .admin-collection { padding: 18px 16px; }
  .admin-card-preview { grid-template-columns: 26px minmax(0, 1fr); }
  .admin-card-preview img { grid-column: 2; }
  .admin-card-preview:not(:has(img)) { grid-template-columns: 26px minmax(0, 1fr); }
  .admin-collection-actions { justify-content: stretch; }
  .admin-collection-actions button { flex: 1; }
}
@media (min-width: 651px) and (max-width: 940px) {
  .admin-page { grid-template-columns: 190px minmax(0, 1fr); gap: 20px; }
  .admin-collection-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.response-setting { margin: 12px 0 20px; }
.response-setting > div:first-child { margin-bottom: 8px; font-weight: 600; }
button.response-switch { width: 56px; height: 30px; padding: 3px; border: 0; border-radius: 20px; background: #64748b; touch-action: none; }
.response-switch-thumb { display: block; width: 24px; height: 24px; border-radius: 50%; background: white; transition: transform .18s ease; }
.response-switch[aria-checked="true"] { background: #198754; }
.response-switch[aria-checked="true"] .response-switch-thumb { transform: translateX(26px); }
.response-switch:focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
.review-answer { padding: 16px 0; border-bottom: 1px solid #cbd5e1; overflow-wrap: anywhere; }
.review-answer img { max-width: 100%; max-height: 200px; object-fit: contain; }
.review-mark { display: inline-flex; align-items: center; justify-content: center; padding: 4px; border: 0; background: transparent; }
.review-mark.correct { color: #198754; }
.review-mark.incorrect { color: #dc3545; }
.row:has(.review-mark[aria-pressed="true"]) .review-mark[aria-pressed="false"] { opacity: 0.35; }
.response-review > button { margin-top: 20px; }
@media (prefers-reduced-motion: reduce) { .response-switch-thumb { transition: none; } }