:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;
  --surface-soft: #f8fafc;
  --text: #0f172a;
  --text-soft: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #0f172a;
  --primary-hover: #1e293b;
  --primary-text: #ffffff;
  --accent: #0f766e;
  --accent-hover: #115e59;
  --ok-bg: #ecfdf5;
  --ok-text: #065f46;
  --ok-line: #a7f3d0;
  --warn-bg: #fffbeb;
  --warn-text: #92400e;
  --warn-line: #fcd34d;
  --danger: #ef4444;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 50% -220px, #dbeafe 0%, transparent 55%),
    linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Lora', serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  margin-top: 0;
}

h1 { font-size: 2.25rem; letter-spacing: -0.025em; margin-bottom: 0.75rem; }
h2 { font-size: 1.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Utils */
[hidden] { display: none !important; }

/* Layout */
.layout {
  max-width: 1024px;
  margin: 0 auto;
  padding: 36px 24px 72px;
  display: grid;
  gap: 24px;
}

.hero,
.card,
.question-card,
.question-item,
.question-preview {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

.card,
.question-card,
.question-item {
  animation: fadeInUp 220ms ease-out;
}

.card:hover,
.question-card:hover,
.question-item:hover {
  box-shadow: var(--shadow);
}

/* Hero Section */
.hero {
  padding: 48px 24px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(241, 245, 249, 0.98) 100%);
}

.top-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* Typography Helpers */
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.hero-copy {
  font-size: 1.125rem;
  color: var(--text-soft);
  max-width: 54ch;
  margin-left: auto;
  margin-right: auto;
}

.status {
  display: block;
  margin-top: 1rem;
  font-size: 0.875rem;
  padding: 8px 12px;
  background: var(--ok-bg);
  color: var(--ok-text);
  border: 1px solid var(--ok-line);
  border-radius: var(--radius-sm);
}

.status:empty {
  display: none;
}

.status.error {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

/* Auth Bar */
.auth-bar {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.user-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.user-meta {
  font-size: 0.875rem;
  color: var(--text-soft);
  font-weight: 500;
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-family: inherit;
  font-weight: 500;
  font-size: 0.9375rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  background: transparent;
}

.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(15, 23, 42, 0.16);
  outline-offset: 1px;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-text);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  border-color: var(--line);
  color: var(--text);
  background: var(--surface);
}

.btn-outline:hover {
  background: var(--surface-alt);
  border-color: var(--muted);
}

.btn-accent {
  background: var(--accent);
  color: #ffffff;
}

.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn:disabled,
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
}

.btn-danger {
  background: #fff1f2;
  color: var(--danger);
  border-color: #fecdd3;
}

.btn-danger:hover {
  background: #fee2e2;
  border-color: #fca5a5;
}

/* Forms */
label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-soft);
  margin-bottom: 0.5rem;
}

input,
select,
textarea {
  display: block;
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Control Layouts */
.controls {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}

.controls > .btn {
  justify-self: start;
}

.controls-two {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Grids */
.question-grid,
.compact-grid,
.form-grid {
  display: grid;
  gap: 20px;
}

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

.form-grid .full {
  grid-column: 1 / -1;
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* Tables */
.report-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  margin-top: 1rem;
}

.report-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  text-align: left;
}

.report-table th,
.report-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
}

.report-table th {
  background: var(--surface-alt);
  font-weight: 600;
  color: var(--text-soft);
  white-space: nowrap;
}

.report-table tr:last-child td {
  border-bottom: none;
}

.report-table tr:hover {
  background: var(--surface-soft);
}

/* Summary Row */
.summary-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.summary-pill {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.summary-pill h4 {
  font-size: 0.875rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  margin: 0 0 8px 0;
  font-family: 'Space Grotesk', sans-serif;
}

.summary-pill p {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0;
  line-height: 1;
}

/* Top Nav */
.top-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  align-items: center;
}

/* Question Showcase */
.question-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.question-showcase {
  display: grid;
  gap: 14px;
  background:
    radial-gradient(circle at top right, #e2e8f0 0%, transparent 35%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-color: #dbe5f1;
}

.question-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.question-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #0b3a53;
  background: #dbeafe;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  padding: 4px 10px;
}

.question-title {
  margin: 0;
  line-height: 1.3;
}

.question-section-label {
  margin: 0;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 700;
}

.question-instructions {
  margin: 0;
  color: #1f2937;
}

.question-points-wrap {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.question-points {
  margin: 8px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.question-points li {
  color: #1e293b;
}

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

.meta-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #334155;
  border: 1px solid #cbd5e1;
  background: #f8fafc;
  border-radius: 999px;
}

.question-sample {
  margin: 0;
  border-left: 3px solid #94a3b8;
  padding-left: 10px;
  color: #334155;
  font-style: italic;
}

.question-actions {
  display: flex;
  justify-content: flex-start;
}

.question-item {
  border-style: dashed;
  gap: 10px;
}

.question-item h3 {
  margin-bottom: 0;
}

.question-item .meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.empty {
  margin: 0;
  color: var(--text-soft);
}

@media (max-width: 680px) {
  .question-grid {
    grid-template-columns: 1fr;
  }

  .question-showcase {
    gap: 12px;
    padding: 18px;
  }

  .question-actions .btn {
    width: 100%;
  }
}

/* ── Source Badges ─────────────────────────────────── */
.source-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 999px;
  white-space: nowrap;
}

.source-badge--assigned {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.source-badge--personal {
  background: #f3e8ff;
  color: #6b21a8;
  border: 1px solid #e9d5ff;
}

/* ── Score Badges ──────────────────────────────────── */
.score-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 0.8125rem;
  font-weight: 700;
  border-radius: 999px;
  white-space: nowrap;
}

.score-badge--high {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.score-badge--mid {
  background: #fef9c3;
  color: #854d0e;
  border: 1px solid #fef08a;
}

.score-badge--low {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* ── Summary Pill Highlight Variant ───────────────── */
.summary-pill--highlight {
  background: var(--primary);
  border-color: var(--primary);
}

.summary-pill--highlight h4 {
  color: #94a3b8;
}

.summary-pill--highlight p {
  color: #ffffff;
}

/* ── Detail Meta Chips ────────────────────────────── */
.detail-meta-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 1.5rem;
}

.detail-meta-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 8px 14px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  min-width: 110px;
}

.detail-meta-chip__label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 3px;
}

.detail-meta-chip__value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
}

/* ── Writing Display ──────────────────────────────── */
.writing-display {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;
  margin-bottom: 0;
}

/* ── Report Detail Sections ───────────────────────── */
.detail-section {
  margin-bottom: 1.75rem;
}

.detail-section:last-child {
  margin-bottom: 0;
}

.detail-section h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1rem;
}

.section-icon {
  font-size: 1.1rem;
  line-height: 1;
}

/* ── Detail Lists ─────────────────────────────────── */
.detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.detail-list li::before {
  flex-shrink: 0;
  font-weight: 700;
  margin-top: 1px;
}

.detail-list--strengths li {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.detail-list--strengths li::before {
  content: '✓';
  color: #16a34a;
}

.detail-list--improvements li {
  background: #fffbeb;
  border: 1px solid #fde68a;
}

.detail-list--improvements li::before {
  content: '→';
  color: #d97706;
}

.detail-list--grammar li {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
}

.detail-list--grammar li::before {
  content: '✎';
  color: #0369a1;
}

/* ── Empty State ──────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 40px 24px;
  color: var(--text-soft);
}

.empty-state__icon {
  font-size: 2.25rem;
  margin-bottom: 10px;
}

.empty-state__text {/
  font-size: 0.9375rem;
  margin: 0;
  color: var(--text-soft);
}

/* ── Top Nav centred in hero ──────────────────────── */
.hero .top-nav {
  justify-content: center;
}

/* Writing / feedback UX */
.writing-card textarea,
#writingInput,
#practiceWritingInput,
#questionInstructions,
#teacherInstructions,
#questionBulletPoints {
  line-height: 1.72;
}

#writingInput,
#practiceWritingInput,
#improvedText,
#detailWriting {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
  font-size: 0.95rem;
}

#improvedText,
#detailWriting,
pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.ocr-row {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
  padding: 12px;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-sm);
  background: #f8fafc;
}

.ocr-upload-label {
  margin-bottom: 0;
}

.feedback-card {
  display: grid;
  gap: 14px;
}

.scores {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.score-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  padding: 12px;
}

.score-pill span {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.score-pill strong {
  font-size: 1rem;
}

#feedbackSummary {
  margin: 0;
  padding: 12px;
  border-left: 4px solid #93c5fd;
  border-radius: 8px;
  background: #eff6ff;
}

.full-report {
  display: grid;
  gap: 12px;
}

.report-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px;
  background: #ffffff;
}

.report-block h4,
.report-block h3 {
  margin-bottom: 8px;
}

.report-sub {
  margin: 6px 0;
  font-size: 0.82rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.feedback-card ul,
.report-block ul {
  margin: 8px 0;
  padding-left: 18px;
}

.feedback-card ul li,
.report-block ul li {
  margin: 6px 0;
}

.assign-student-select {
  min-height: 180px;
}

/* Inline Marking */
.inline-marking-block {
  margin-top: 12px;
}

.inline-marking-content {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  padding: 14px;
  line-height: 1.9;
  white-space: normal;
  word-break: break-word;
}

.inline-mark-delete {
  background: #fee2e2;
  color: #991b1b;
  text-decoration: line-through;
  padding: 1px 3px;
  border-radius: 4px;
}

.inline-mark-insert {
  background: #dcfce7;
  color: #166534;
  padding: 1px 3px;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .layout {
    padding: 20px 14px 44px;
    gap: 16px;
  }

  .hero,
  .card,
  .question-card,
  .question-item,
  .question-preview {
    padding: 16px;
    border-radius: 10px;
  }

  .top-nav,
  .user-bar {
    gap: 8px;
  }

  .btn {
    width: 100%;
    min-height: 40px;
    padding: 10px 14px;
  }

  .controls .btn,
  .controls-two .btn,
  .question-actions .btn {
    width: 100%;
    justify-self: stretch;
  }

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

  .score-pill {
    flex-direction: column;
    align-items: flex-start;
  }
}