* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Login screen */
#login-screen {
  position: fixed;
  inset: 0;
  background: #1a1a2e;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

#login-box {
  background: white;
  border-radius: 12px;
  padding: 40px 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 320px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

#login-box h2 {
  font-size: 22px;
  color: #1a1a2e;
}

#login-box p {
  font-size: 13px;
  color: #666;
}

#login-box input {
  padding: 10px 14px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 15px;
  text-align: center;
}

#login-box button {
  padding: 10px;
  background: #1565c0;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  cursor: pointer;
  font-weight: 600;
}

#login-box button:hover { background: #0d47a1; }

#login-error {
  color: #d32f2f;
  font-size: 13px;
  display: none;
}

/* Profile & account badges on question bar */
.question-profile {
  font-size: 12px;
  background: #e3f2fd;
  color: #1565c0;
  border-radius: 4px;
  padding: 2px 8px;
  white-space: nowrap;
  font-weight: 500;
  flex-shrink: 0;
}

.question-account {
  font-size: 12px;
  color: #888;
  white-space: nowrap;
  flex-shrink: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.header {
  background: #1a1a2e;
  color: white;
  padding: 8px 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: nowrap;
}

.header h1 {
  font-size: 14px;
  margin-bottom: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  flex: 1;
  justify-content: flex-end;
}

.header-controls label {
  font-size: 13px;
  opacity: 0.8;
}

.header-controls input,
.header-controls select {
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid #555;
  background: #2a2a4a;
  color: white;
  font-size: 13px;
}

.header-controls input {
  width: 130px;
  font-size: 14px;
  padding: 6px 10px;
  border: 1px solid #90caf9;
  background: #1e2a4a;
}

.header-controls select {
  max-width: 240px;
}

.btn-group {
  display: flex;
  gap: 2px;
}

#progress-badge {
  background: #4CAF50;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  white-space: nowrap;
}

.btn-nav {
  padding: 4px 12px;
  border: 1px solid #555;
  border-radius: 4px;
  background: #2a2a4a;
  color: white;
  font-size: 13px;
  cursor: pointer;
}

.btn-nav:hover {
  background: #3a3a5a;
}

.btn-nav:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-export-header {
  padding: 4px 10px;
  border: 1px solid #4CAF50;
  border-radius: 4px;
  background: #2e7d32;
  color: white;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.btn-export-header:hover {
  background: #388E3C;
}

.export-group {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,152,0,0.12);
  border: 1px solid #ff9800;
  border-radius: 6px;
  padding: 4px 10px 4px 8px;
}

.export-label {
  font-size: 11px;
  color: #ffb74d;
  white-space: nowrap;
  font-weight: 500;
}

.btn-download {
  padding: 6px 14px;
  border: none;
  border-radius: 4px;
  background: #ff9800;
  color: #1a1a2e;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.3px;
}

.btn-download-json {
  background: rgba(255,152,0,0.25);
  color: #ffb74d;
  border: 1px solid #ff9800;
}

.btn-download:hover { background: #ffb74d; }
.btn-download-json:hover { background: rgba(255,152,0,0.4); }

#lang-select {
  padding: 4px 8px;
  border: 1px solid #80cbc4;
  border-radius: 4px;
  background: #1a1a2e;
  color: #80cbc4;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

#lang-select:focus {
  outline: none;
  border-color: #b2dfdb;
}

.btn-guide {
  padding: 6px 12px;
  border: 1px solid #64b5f6;
  border-radius: 4px;
  background: transparent;
  color: #90caf9;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.btn-guide:hover {
  background: rgba(100, 181, 246, 0.15);
  color: white;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

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

.modal-box {
  background: white;
  border-radius: 10px;
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  font-size: 24px;
  line-height: 1;
  color: #666;
  cursor: pointer;
  border-radius: 4px;
}

.modal-close:hover {
  background: #f0f0f0;
  color: #333;
}

.modal-content {
  padding: 20px 24px 12px;
  overflow-y: auto;
  font-size: 14px;
  line-height: 1.6;
  color: #333;
}

.modal-content h2 {
  font-size: 20px;
  color: #1a1a2e;
  margin-bottom: 14px;
}

.modal-content h3 {
  font-size: 15px;
  color: #1565c0;
  margin: 18px 0 6px;
  font-weight: 600;
}

.modal-content ul, .modal-content ol {
  margin: 6px 0 10px 20px;
}

.modal-content li {
  margin-bottom: 4px;
}

.modal-content .lang-sep {
  border-top: 1px dashed #ddd;
  margin: 24px 0 18px;
}

.modal-content kbd {
  display: inline-block;
  padding: 1px 6px;
  background: #eee;
  border: 1px solid #ccc;
  border-radius: 3px;
  font-size: 12px;
  font-family: inherit;
}

.modal-footer {
  padding: 14px 32px;
  border-top: 1px solid #eee;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: #fafafa;
  border-radius: 0 0 10px 10px;
}

.modal-dont-show {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #666;
  cursor: pointer;
}

.btn-primary {
  padding: 8px 20px;
  border: none;
  border-radius: 4px;
  background: #1565c0;
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary:hover {
  background: #0d47a1;
}

.autosave-indicator {
  font-size: 12px;
  color: #81c784;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.3s;
  padding: 2px 8px;
  background: rgba(76, 175, 80, 0.15);
  border-radius: 10px;
}

.autosave-indicator.visible {
  opacity: 1;
}

.question-bar {
  background: white;
  padding: 6px 16px;
  border-bottom: 1px solid #ddd;
  position: sticky;
  top: 48px;
  z-index: 90;
}

.question-bar-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 4px 0;
}

#question-text {
  flex: 1;
  font-size: 16px;
  font-weight: 500;
  min-width: 300px;
}

.grader-tags {
  display: flex;
  gap: 6px;
}

.grader-tag {
  background: #e3f2fd;
  color: #1565c0;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.grader-tag.inactive {
  background: #eee;
  color: #999;
}

.btn-rubric {
  padding: 6px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: white;
  cursor: pointer;
  font-size: 13px;
}

.btn-rubric:hover {
  background: #f0f0f0;
}

/* Rubric drawer */
.rubric-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.25);
  z-index: 200;
}

.rubric-overlay.hidden { display: none; }

.rubric-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  max-width: 90vw;
  height: 100vh;
  background: white;
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  z-index: 201;
  display: flex;
  flex-direction: column;
  font-size: 13px;
}

.rubric-drawer.hidden { display: none; }

.rubric-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid #eee;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.rubric-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: #666;
  line-height: 1;
  padding: 0 4px;
}

.rubric-close:hover { color: #000; }

#rubric-content {
  overflow-y: auto;
  padding: 16px 20px;
  flex: 1;
}

.rubric-panel h3,
#rubric-content h3 {
  margin: 12px 0 6px;
  color: #1565c0;
}

.rubric-panel table,
#rubric-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0;
  font-size: 12px;
}

.rubric-panel th,
.rubric-panel td,
#rubric-content th,
#rubric-content td {
  border: 1px solid #ddd;
  padding: 6px 8px;
  text-align: left;
}

.rubric-panel th,
#rubric-content th {
  background: #e8e8e8;
}

.answers-stack {
  padding: 8px 16px;
  display: block;
}

.answer-card {
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
  display: none;  /* hidden by default, shown when active */
  flex-direction: column;
  max-width: 1400px;  /* answer body 1000 + scoring 360 + padding */
  margin: 0 auto;
}

.answer-card.active {
  display: flex;
}

.answer-card-header {
  padding: 12px 20px;
  background: #f8f8f8;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.answer-card-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a2e;
}

.answer-card-header .answer-label-badge {
  background: #1565c0;
  color: white;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
  margin-right: 10px;
}

.answer-card-body {
  display: grid;
  grid-template-columns: minmax(0, 1000px) 360px;
  align-items: start;
}

.answer-body {
  padding: 20px 24px;
  max-width: 1000px;
  font-size: 14px;
  line-height: 1.65;
  border-right: 1px solid #eee;
  min-width: 0;
}

.answer-body h1 { font-size: 20px; margin: 18px 0 10px; }
.answer-body h2 { font-size: 17px; margin: 16px 0 8px; }
.answer-body h3 { font-size: 15px; margin: 14px 0 6px; }
.answer-body p { margin: 10px 0; }
.answer-body ul, .answer-body ol { margin: 10px 0 10px 24px; }
.answer-body table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 13px; }
.answer-body th, .answer-body td { border: 1px solid #ddd; padding: 6px 10px; }
.answer-body th { background: #f5f5f5; }
.answer-body code { background: #f0f0f0; padding: 1px 4px; border-radius: 3px; font-size: 13px; }
.answer-body pre { background: #f5f5f5; padding: 12px; border-radius: 4px; overflow-x: auto; margin: 10px 0; }
.answer-body pre code { background: none; padding: 0; }
.answer-body blockquote { border-left: 3px solid #ddd; padding-left: 12px; color: #666; margin: 10px 0; }

.answer-scoring {
  padding: 20px;
  background: #fafbfc;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: var(--scoring-top, 148px);
  max-height: calc(100vh - var(--scoring-top, 148px) - 16px);
  overflow-y: auto;
}

.scoring-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scoring-row-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.score-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.score-group.inline {
  flex-direction: row;
  align-items: center;
  gap: 6px;
}

.score-group label {
  font-size: 12px;
  font-weight: 600;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.score-group .label-with-hint {
  display: flex;
  align-items: center;
  gap: 4px;
}

.hint-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ddd;
  color: #666;
  font-size: 10px;
  font-weight: bold;
  cursor: help;
  user-select: none;
  position: relative;
}

/* Tooltip is rendered via JS into body — see app.js initTooltips() */
#js-tooltip {
  position: fixed;
  background: #333;
  color: white;
  font-size: 12px;
  line-height: 1.5;
  padding: 8px 12px;
  border-radius: 6px;
  width: 240px;
  white-space: normal;
  z-index: 99999;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  display: none;
}

.score-group select {
  padding: 6px 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 13px;
  background: white;
  width: 100%;
}

.score-group.inline select {
  width: auto;
  min-width: 80px;
}

.scoring-row textarea {
  width: 100%;
  min-height: 60px;
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 13px;
  font-family: inherit;
  line-height: 1.5;
  resize: vertical;
}

.scoring-divider {
  height: 1px;
  background: #eee;
  margin: 4px 0;
}

.answer-tabs {
  background: white;
  padding: 0 16px;
  display: flex;
  gap: 2px;
  align-items: center;
  flex-wrap: wrap;
  overflow-x: auto;
}

.answer-tabs .tabs-label {
  font-size: 12px;
  color: #888;
  margin-right: 10px;
  font-weight: 500;
}

.answer-tabs button {
  padding: 6px 12px;
  border: none;
  border-bottom: 3px solid transparent;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: #666;
  transition: all 0.15s;
  position: relative;
  top: 1px;
}

.answer-tabs button:hover {
  color: #1565c0;
  background: rgba(21, 101, 192, 0.04);
}

.answer-tabs button.active {
  color: #1565c0;
  border-bottom-color: #1565c0;
  font-weight: 600;
}

.answer-tabs button .scored-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4CAF50;
  margin-left: 6px;
  vertical-align: middle;
}

.global-actions {
  padding: 16px 24px;
  display: flex;
  gap: 12px;
  justify-content: center;
  border-top: 1px solid #ddd;
  background: white;
}

.btn-export, .btn-export-csv {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  background: #1565c0;
  color: white;
}

.btn-export:hover, .btn-export-csv:hover { background: #0d47a1; }

/* Toast notification */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #333;
  color: white;
  padding: 12px 20px;
  border-radius: 6px;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
}

/* Responsive */
@media (max-width: 900px) {
  .jump-bar {
    top: 110px;
  }
  .answer-card-body {
    grid-template-columns: 1fr;
  }
  .answer-body {
    border-right: none;
    border-bottom: 1px solid #eee;
  }
}