:root {
  --bg: #f3f7ff;
  --ink: #0f172a;
  --muted: #5b6577;
  --card: #ffffff;
  --line: #d7deea;
  --brand: #0b5fff;
  --brand-2: #00a3a3;
  --ok: #15803d;
  --warn: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  background: radial-gradient(circle at 10% 10%, #dce8ff 0%, #f3f7ff 40%, #ecfff7 100%);
  color: var(--ink);
  min-height: 100vh;
}

.bg-shape {
  position: fixed;
  border-radius: 50%;
  filter: blur(70px);
  z-index: 0;
}

.bg-shape-1 {
  width: 260px;
  height: 260px;
  background: rgba(11, 95, 255, 0.2);
  top: 5%;
  left: 2%;
}

.bg-shape-2 {
  width: 300px;
  height: 300px;
  background: rgba(0, 163, 163, 0.15);
  bottom: 3%;
  right: 2%;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 1300px;
  margin: 0 auto;
  padding: 20px;
}

.screen {
  display: none;
  animation: rise 0.35s ease;
}

.screen.active {
  display: block;
}

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

.hero {
  background: linear-gradient(120deg, #0f172a 0%, #163469 55%, #005670 100%);
  color: #fff;
  border-radius: 18px;
  padding: 24px;
  margin-bottom: 20px;
  display: grid;
  gap: 16px;
}

.brand-row {
  display: flex;
  align-items: center;
}

.inst-logo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  opacity: 0.8;
}

.hero h1 {
  font-family: "Sora", sans-serif;
  margin: 8px 0;
  line-height: 1.2;
}

.subtext {
  margin: 0;
  opacity: 0.9;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 15px 40px rgba(28, 43, 72, 0.08);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.import-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.import-help {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.upload-center {
  margin: 12px 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8fbff;
  padding: 12px;
}

.upload-center h3 {
  margin: 0;
  font-size: 15px;
}

.upload-center-sub {
  margin: 6px 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.upload-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.upload-actions .btn {
  text-decoration: none;
}

.upload-textarea {
  margin-top: 10px;
  width: 100%;
  min-height: 110px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  background: #ffffff;
}

.edit-exam-form {
  display: grid;
  gap: 20px;
}

fieldset {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  margin: 0;
}

legend {
  font-weight: 700;
  font-size: 14px;
  padding: 0 8px;
}

.form-row {
  display: grid;
  gap: 4px;
  margin-bottom: 12px;
}

.form-row:last-child {
  margin-bottom: 0;
}

.form-row label {
  font-weight: 600;
  font-size: 13px;
  color: var(--ink);
}

.form-row input,
.form-row textarea,
.form-row select {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  background: #ffffff;
}

.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 2px rgba(11, 95, 255, 0.1);
}

.question-edit-box {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #f8fbff;
  margin-bottom: 12px;
}

.question-edit-box .form-row {
  margin-bottom: 10px;
}

.question-edit-remove {
  background: #fef2f2;
  color: #b91c1c;
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid #fecaca;
}

.exam-list {
  display: grid;
  gap: 12px;
}

.exam-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.exam-item-actions {
  display: flex;
  gap: 8px;
}

.exam-item p {
  margin: 3px 0;
  color: var(--muted);
}

.btn {
  border: 0;
  background: linear-gradient(90deg, var(--brand), #2575ff);
  color: #fff;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
}

.btn:hover {
  filter: brightness(1.05);
}

.btn-muted {
  background: #e9edf5;
  color: var(--ink);
}

.btn-danger {
  background: linear-gradient(90deg, #b91c1c, #ef4444);
}

.btn-secondary {
  background: #64748b;
  color: #fff;
}

.guidelines ul {
  margin-top: 8px;
}

.consent {
  display: grid;
  gap: 10px;
}

.consent input[type="text"] {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  font-size: 15px;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.button-row {
  margin-top: 10px;
  display: flex;
  gap: 10px;
}

.exam-topbar {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.exam-topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.exam-logo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--line);
  flex-shrink: 0;
}

.exam-topbar h2,
.exam-topbar p {
  margin: 2px 0;
}

.timer-wrap {
  text-align: center;
}

.timer-wrap span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.timer-wrap strong {
  font-size: 22px;
  color: #b91c1c;
}

.exam-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 12px;
}

.palette-panel,
.question-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}

.palette-panel {
  order: 2;
}

.question-panel {
  order: 1;
}

.section-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.tab {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
  padding: 8px;
  cursor: pointer;
  font-weight: 600;
}

.tab.active {
  background: #dce8ff;
  border-color: #aac3f5;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.pal-btn {
  position: relative;
  border: 2px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--ink);
  transition: filter 0.15s;
}

.pal-btn:hover {
  filter: brightness(0.95);
}

/* Answered - green */
.pal-btn.pal-answered {
  background: #16a34a;
  border-color: #15803d;
  color: #fff;
}

/* Visited but not answered - red */
.pal-btn.pal-visited {
  background: #ef4444;
  border-color: #b91c1c;
  color: #fff;
}

/* Marked for review (not answered) - purple */
.pal-btn.pal-marked {
  background: #7c3aed;
  border-color: #6d28d9;
  color: #fff;
}

/* Marked for review AND answered - purple with green tick */
.pal-btn.pal-marked-answered {
  background: #7c3aed;
  border-color: #6d28d9;
  color: #fff;
}

.pal-tick {
  position: absolute;
  top: 1px;
  right: 3px;
  font-size: 10px;
  color: #86efac;
  font-weight: 800;
  line-height: 1;
}

/* Current question outline */
.pal-btn.pal-current {
  outline: 3px solid #0b5fff;
  outline-offset: 1px;
}

.legend {
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
  vertical-align: middle;
}

.dot-answered      { background: #16a34a; }
.dot-visited       { background: #ef4444; }
.dot-not-visited   { background: #ffffff; border: 1px solid #9ca3af; }
.dot-marked        { background: #7c3aed; }
.dot-marked-answered { background: #7c3aed; outline: 2px solid #16a34a; outline-offset: 1px; }

.question-header {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  margin-bottom: 10px;
}

.question-text-wrap {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 10px;
  background: #ffffff;
  line-height: 1.6;
}

.question-text-wrap:empty {
  display: none;
}

.question-image-wrap {
  border: 1px dashed var(--line);
  border-radius: 12px;
  overflow: hidden;
  min-height: unset;
  display: grid;
  place-items: center;
  background: #fdfefe;
}

.question-image-wrap.is-hidden {
  display: none;
}

.question-image-wrap img {
  max-width: 100%;
  max-height: 220px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.question-image-wrap.image-large img {
  max-height: 480px;
  max-width: 100%;
}

.options {
  display: grid;
  gap: 8px;
  margin: 12px 0;
}

.opt {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.opt-content {
  display: grid;
  gap: 8px;
  width: 100%;
}

.opt-text {
  line-height: 1.5;
}

.opt-img {
  max-width: 100%;
  max-height: 120px;
  width: auto;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
}

.btn-mark {
  background: #7c3aed;
  color: #fff;
  border: none;
}

.btn-mark.active {
  background: #5b21b6;
  box-shadow: 0 0 0 3px rgba(124,58,237,0.3);
}

.btn-mark:hover {
  filter: brightness(1.1);
}

.mark-row {
  margin-bottom: 2px;
}

.result-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
}

.kpi {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}

.kpi p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.kpi strong {
  font-size: 22px;
}

.kpi-score {
  border: 2px solid #f59e0b;
  background: linear-gradient(135deg, #fff7ed 0%, #fffbeb 100%);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.18);
}

.kpi-score p {
  color: #b45309;
  font-weight: 700;
}

.kpi-score strong {
  color: #92400e;
  font-size: 28px;
}

.section-scores {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.sec-score-card {
  flex: 1 1 140px;
  border: 2px solid;
  border-radius: 12px;
  padding: 12px 16px;
  background: #fff;
  min-width: 130px;
}

.sec-score-name {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.sec-score-val {
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
}

.sec-score-total {
  font-size: 14px;
  font-weight: 500;
  opacity: 0.6;
}

.sec-score-meta {
  margin-top: 6px;
  font-size: 12px;
  display: flex;
  gap: 10px;
}

.sec-ok { color: var(--ok); font-weight: 700; }
.sec-bad { color: var(--warn); font-weight: 700; }

.result-key-activity {
  margin-top: 18px;
}

.result-key-activity h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.key-log-note,
.key-log-empty {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.key-log-wrap {
  margin-top: 10px;
}

.table-wrap {
  margin-top: 14px;
  overflow: auto;
  max-height: 420px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 8px;
  text-align: left;
  font-size: 14px;
}

.status-ok { color: var(--ok); font-weight: 700; }
.status-bad { color: var(--warn); font-weight: 700; }
.status-na { color: var(--muted); font-weight: 700; }

.btn-sm-view {
  border: 0;
  background: #e8edff;
  color: #1d4ed8;
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.btn-sm-view:hover {
  background: #dce4ff;
}

/* ── Question Preview Modal ─────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 50, 0.55);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: rise 0.2s ease;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-box {
  background: #fff;
  border-radius: 16px;
  width: 100%;
  max-width: 780px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(10,20,50,0.25);
  display: flex;
  flex-direction: column;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
  font-size: 16px;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 1;
}

.modal-close {
  border: 0;
  background: #f1f5f9;
  border-radius: 50%;
  width: 34px;
  height: 34px;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}

.modal-close:hover {
  background: #e2e8f0;
}

.modal-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-meta {
  display: flex;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.modal-qtext {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #fff;
  line-height: 1.6;
}

.modal-qtext:empty {
  display: none;
}

.modal-img-wrap {
  border: 1px dashed var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fdfefe;
}

.modal-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.modal-img-wrap.is-hidden {
  display: none;
}

.modal-options {
  display: grid;
  gap: 8px;
}

.modal-options:empty {
  display: none;
}

.modal-option {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  background: #fff;
}

.modal-option.correct-opt {
  border-color: rgba(21, 128, 61, 0.45);
  background: rgba(21, 128, 61, 0.08);
}

.modal-answers {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.modal-answer-row {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 14px;
}

.modal-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.modal-val {
  font-size: 18px;
  font-weight: 800;
}

.modal-val-correct { color: var(--ok); }
.modal-val-wrong   { color: var(--warn); }
.modal-val-na      { color: var(--muted); }

.submit-modal-box {
  max-width: 720px;
}

.submit-note {
  margin: 0;
  color: var(--muted);
}

.submit-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 1fr));
  gap: 10px;
}

.submit-stat {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 10px;
}

.submit-stat p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.submit-stat strong {
  display: block;
  margin-top: 4px;
  font-size: 24px;
  line-height: 1.1;
}

.submit-actions {
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .exam-layout {
    grid-template-columns: 1fr;
  }

  .palette-grid {
    grid-template-columns: repeat(8, 1fr);
  }

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

  .submit-stats {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }
}

@media (max-width: 640px) {
  .app {
    padding: 12px;
  }

  .inst-logo {
    width: 76px;
    height: 76px;
  }

  .exam-item,
  .exam-topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .palette-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .submit-stats {
    grid-template-columns: 1fr;
  }
}

@media print {
  @page {
    size: A4;
    margin: 12mm;
  }

  * {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  body {
    background: #fff !important;
  }

  .bg-shape,
  .hero,
  .button-row,
  #examScreen,
  #homeScreen,
  #instructionScreen,
  #editExamScreen,
  #qModal,
  #submitModal {
    display: none !important;
  }

  .app {
    max-width: none;
    margin: 0;
    padding: 0;
  }

  #resultScreen {
    display: block !important;
    animation: none !important;
  }

  #resultScreen .card {
    box-shadow: none;
    border: 1px solid #d7deea;
    border-radius: 10px;
  }

  .table-wrap {
    max-height: none;
    overflow: visible;
  }

  .result-key-activity .table-wrap {
    max-height: none;
    overflow: visible;
  }

  table {
    page-break-inside: auto;
  }

  tr {
    page-break-inside: avoid;
    page-break-after: auto;
  }
}