:root {
  --bg: #05060b;
  --bg-gradient: linear-gradient(160deg, #05060b 0%, #0a0f1a 30%, #0d0a1a 60%, #080612 100%);
  --surface: rgba(12, 15, 25, 0.75);
  --surface-solid: #0c0f19;
  --surface-2: rgba(16, 20, 35, 0.65);
  --surface-2-solid: #101423;
  --glass: rgba(255, 255, 255, 0.02);
  --glass-border: rgba(0, 255, 234, 0.08);
  --border: rgba(0, 255, 234, 0.06);
  --text: #d0e8e4;
  --text-muted: #5a7a7a;
  --cyan: #00ffea;
  --cyan-dim: #00ccbb;
  --cyan-glow: rgba(0, 255, 234, 0.15);
  --magenta: #ff2d7b;
  --magenta-glow: rgba(255, 45, 123, 0.15);
  --purple: #b44dff;
  --purple-glow: rgba(180, 77, 255, 0.15);
  --success: #00ff88;
  --success-glow: rgba(0, 255, 136, 0.12);
  --danger: #ff3860;
  --danger-glow: rgba(255, 56, 96, 0.12);
  --warning: #ffcc00;
  --warning-glow: rgba(255, 204, 0, 0.12);
  --radius: 12px;
  --blur: blur(20px);
}

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

body {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  position: relative;
}

/* Animated grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    linear-gradient(var(--glass-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--glass-border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

/* Scanline overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 255, 234, 0.008) 2px,
    rgba(0, 255, 234, 0.008) 4px
  );
  pointer-events: none;
  z-index: 999;
}

/* Nav */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 56px;
  background: rgba(5, 6, 11, 0.85);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 0 30px rgba(0, 255, 234, 0.03);
}

.nav-brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan-glow), 0 0 40px rgba(0, 255, 234, 0.1);
}

.nav-tabs { display: flex; gap: 0.25rem; }

.tab {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  cursor: pointer;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: inherit;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.3s;
}

.tab:hover {
  color: var(--cyan-dim);
  border-color: rgba(0, 255, 234, 0.15);
  background: rgba(0, 255, 234, 0.04);
}

.tab.active {
  color: var(--cyan);
  background: rgba(0, 255, 234, 0.08);
  border-color: var(--cyan);
  box-shadow: 0 0 15px var(--cyan-glow), inset 0 0 15px rgba(0, 255, 234, 0.03);
  text-shadow: 0 0 10px var(--cyan-glow);
}

/* Layout */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
  position: relative;
  z-index: 1;
}

.card {
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow:
    0 4px 30px rgba(0, 0, 0, 0.3),
    0 0 40px rgba(0, 255, 234, 0.02),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.3;
}

.hidden { display: none !important; }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Form */
h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan-glow);
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 600;
}

h3 {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  color: var(--cyan-dim);
  letter-spacing: 0.5px;
}

.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

input[type="url"], input[type="text"], .task-input {
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: rgba(0, 255, 234, 0.03);
  border: 1px solid rgba(0, 255, 234, 0.1);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  transition: all 0.3s;
}

input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan-glow), 0 0 20px var(--cyan-glow);
  background: rgba(0, 255, 234, 0.05);
}

input::placeholder {
  color: rgba(0, 255, 234, 0.2);
}

.task-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.task-row .task-input { flex: 1; }

.btn-primary {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 0.6rem 1.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.3s;
  box-shadow: 0 0 15px var(--cyan-glow);
  text-shadow: 0 0 10px var(--cyan-glow);
}

.btn-primary:hover {
  background: rgba(0, 255, 234, 0.1);
  box-shadow: 0 0 30px var(--cyan-glow), 0 0 60px rgba(0, 255, 234, 0.08);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: rgba(0, 255, 234, 0.04);
  color: var(--text-muted);
  border: 1px solid rgba(0, 255, 234, 0.1);
  padding: 0.4rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.75rem;
  font-family: inherit;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: all 0.3s;
}

.btn-secondary:hover {
  color: var(--cyan-dim);
  border-color: rgba(0, 255, 234, 0.25);
  background: rgba(0, 255, 234, 0.08);
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  transition: all 0.2s;
}

.btn-icon:hover {
  color: var(--danger);
  background: var(--danger-glow);
  text-shadow: 0 0 10px var(--danger-glow);
}

.btn-delete {
  font-size: 1rem;
  opacity: 0.4;
  transition: opacity 0.2s, color 0.2s;
}

.btn-delete:hover {
  opacity: 1;
}

.btn-danger {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.8rem;
  transition: all 0.2s;
}

.btn-danger:hover {
  background: var(--danger-glow);
  text-shadow: 0 0 10px var(--danger-glow);
  box-shadow: 0 0 15px var(--danger-glow);
}

/* Job Queue */
.job-card {
  position: relative;
}

.job-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.job-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.job-url {
  font-weight: 600;
  font-size: 0.9rem;
}

.job-task-count {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.badge-running {
  background: var(--cyan-glow);
  color: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow);
  text-shadow: 0 0 5px var(--cyan-glow);
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px var(--cyan-glow); }
  50% { box-shadow: 0 0 20px var(--cyan-glow), 0 0 30px rgba(0, 255, 234, 0.08); }
}

.job-status-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: rgba(0, 255, 234, 0.03);
  border: 1px solid rgba(0, 255, 234, 0.06);
  border-radius: 6px;
}

.job-progress {
  font-size: 0.8rem;
  color: var(--cyan-dim);
  letter-spacing: 0.5px;
}

.job-dismiss:hover {
  color: var(--danger);
  background: var(--danger-glow);
}

.loading-spinner-sm {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0, 255, 234, 0.1);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

/* Loading */
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid rgba(0, 255, 234, 0.1);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 0.75rem;
  box-shadow: 0 0 15px var(--cyan-glow);
}

@keyframes spin { to { transform: rotate(360deg); } }

#run-status { text-align: center; color: var(--text-muted); }

/* Results */
.result-card {
  background: rgba(0, 255, 234, 0.02);
  backdrop-filter: var(--blur);
  border: 1px solid rgba(0, 255, 234, 0.06);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 0.75rem;
  position: relative;
}

.result-card::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 234, 0.15), transparent);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.result-task { font-weight: 500; font-size: 0.9rem; }

.badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-success {
  background: var(--success-glow);
  color: var(--success);
  box-shadow: 0 0 10px var(--success-glow);
  text-shadow: 0 0 5px var(--success-glow);
}

.badge-error {
  background: var(--danger-glow);
  color: var(--danger);
  box-shadow: 0 0 10px var(--danger-glow);
  text-shadow: 0 0 5px var(--danger-glow);
}

.result-answer {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  line-height: 1.5;
  border-left: 2px solid var(--cyan);
  border-top: none;
  border-right: none;
  border-bottom: none;
}

.result-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.score-bar-group { margin-top: 0.75rem; }

.score-bar-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
}

.score-bar-label { width: 90px; color: var(--text-muted); text-align: right; text-transform: uppercase; letter-spacing: 0.5px; font-size: 0.65rem; }
.score-bar-value { width: 36px; text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--cyan-dim); }

.score-bar-track {
  flex: 1;
  height: 4px;
  background: rgba(0, 255, 234, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 2px;
  width: 0;
  box-shadow: 0 0 12px currentColor, 0 0 4px currentColor;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.stat-card {
  background: var(--surface);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--magenta), transparent);
  opacity: 0.6;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(180deg, rgba(0, 255, 234, 0.03), transparent);
  pointer-events: none;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan-glow), 0 0 40px rgba(0, 255, 234, 0.08);
  position: relative;
}

.stat-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Insights */
.insights-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.insights-card h3 {
  margin-bottom: 0.75rem;
}

.issue-item {
  padding: 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  border-left: 3px solid var(--text-muted);
  background: rgba(0, 0, 0, 0.2);
}

.issue-item.severity-high { border-left-color: var(--magenta); }
.issue-item.severity-medium { border-left-color: var(--warning); }
.issue-item.severity-low { border-left-color: var(--cyan-dim); }

.issue-header {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.25rem;
}

.issue-severity {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}

.severity-high .issue-severity {
  background: var(--magenta-glow);
  color: var(--magenta);
}

.severity-medium .issue-severity {
  background: var(--warning-glow);
  color: var(--warning);
}

.severity-low .issue-severity {
  background: var(--cyan-glow);
  color: var(--cyan-dim);
}

.issue-category {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.issue-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.issue-detail {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.rec-item {
  display: flex;
  gap: 0.5rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(0, 255, 234, 0.04);
  font-size: 0.8rem;
  line-height: 1.5;
}

.rec-item:last-child { border-bottom: none; }

.rec-marker {
  color: var(--cyan);
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
  text-shadow: 0 0 8px var(--cyan-glow);
}

/* Charts */
.charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.chart-card canvas {
  max-height: 320px;
}

/* History Table */
.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.filter-group { display: flex; gap: 0.5rem; }
.filter-group input { width: 250px; }

#history-table-container { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  color: var(--cyan-dim);
  border-bottom: 1px solid var(--glass-border);
  font-weight: 600;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
td { padding: 0.6rem 0.75rem; border-bottom: 1px solid rgba(0, 255, 234, 0.04); }
tr:hover td { background: rgba(0, 255, 234, 0.03); }

.score-pill {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.score-high {
  background: var(--success-glow);
  color: var(--success);
  box-shadow: 0 0 8px var(--success-glow);
}

.score-mid {
  background: var(--warning-glow);
  color: var(--warning);
  box-shadow: 0 0 8px var(--warning-glow);
}

.score-low {
  background: var(--danger-glow);
  color: var(--danger);
  box-shadow: 0 0 8px var(--danger-glow);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 6, 11, 0.8);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 700px;
  max-height: 80vh;
  overflow-y: auto;
  background: var(--surface-solid);
  border: 1px solid var(--glass-border);
  box-shadow:
    0 8px 60px rgba(0, 0, 0, 0.5),
    0 0 80px var(--cyan-glow),
    0 0 2px var(--cyan);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

/* URL Performance Section */
.perf-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

#url-select {
  padding: 0.5rem 0.75rem;
  background: rgba(0, 255, 234, 0.03);
  border: 1px solid rgba(0, 255, 234, 0.12);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  min-width: 300px;
  cursor: pointer;
  transition: all 0.3s;
}

#url-select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan-glow), 0 0 20px var(--cyan-glow);
}

#url-select option {
  background: var(--surface-2-solid);
  color: var(--text);
}

.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

.chart-card-inner {
  background: var(--surface-2);
  border-radius: 8px;
  padding: 1rem;
}

.chart-card-inner h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.chart-card-inner canvas {
  max-height: 260px;
}

#url-stats-grid .stat-card {
  background: var(--surface-2);
  border: 1px solid var(--glass-border);
}

.url-runs-heading {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 1.25rem 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.url-run-detail {
  background: rgba(0, 255, 234, 0.02);
  backdrop-filter: var(--blur);
  border: 1px solid rgba(0, 255, 234, 0.06);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 0.5rem;
  position: relative;
}

.url-run-detail::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--magenta));
  border-radius: 2px 0 0 2px;
  opacity: 0.5;
}

.url-run-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

.url-run-detail-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Step Details */
.step-details-section {
  margin-top: 0.75rem;
}

.step-toggle {
  font-size: 0.7rem;
  padding: 0.3rem 0.8rem;
  border-color: rgba(180, 77, 255, 0.2);
  color: var(--purple);
}

.step-toggle:hover {
  border-color: rgba(180, 77, 255, 0.4);
  background: rgba(180, 77, 255, 0.08);
  color: var(--purple);
}

.step-details-list {
  margin-top: 0.5rem;
}

.step-detail-card {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(180, 77, 255, 0.08);
  border-left: 2px solid rgba(180, 77, 255, 0.3);
  border-radius: 6px;
  padding: 0.75rem;
  margin-bottom: 0.5rem;
}

.step-detail-header {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--purple);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-shadow: 0 0 10px var(--purple-glow);
}

.step-field {
  margin-bottom: 0.4rem;
}

.step-field-label {
  display: inline-block;
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.15rem;
}

.step-field-content {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--text);
  word-break: break-word;
}

.step-code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.75rem;
  background: rgba(0, 255, 234, 0.03);
  border: 1px solid rgba(0, 255, 234, 0.08);
  border-radius: 4px;
  padding: 0.5rem;
  overflow-x: auto;
  color: var(--cyan);
  white-space: pre-wrap;
  text-shadow: 0 0 8px var(--cyan-glow);
}

.step-error {
  color: var(--danger);
  text-shadow: 0 0 8px var(--danger-glow);
}

/* Animation initial states */
.anim-fade-up {
  opacity: 0;
  transform: translateY(20px);
}

.anim-fade-in {
  opacity: 0;
}

.anim-scale-in {
  opacity: 0;
  transform: scale(0.9);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 255, 234, 0.15);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 255, 234, 0.3);
}

/* Selection */
::selection {
  background: rgba(0, 255, 234, 0.2);
  color: var(--cyan);
}

/* Responsive */
@media (max-width: 768px) {
  .charts-row, .insights-row { grid-template-columns: 1fr; }
  nav { padding: 0 1rem; }
  main { padding: 1rem; }
  .history-header { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
  .filter-group input { width: 180px; }
  #url-select { min-width: 200px; }
}