:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-soft: #eff6ff;
  --green: #059669;
  --green-soft: #ecfdf5;
  --green-border: #bbf7d0;
  --amber: #d97706;
  --amber-soft: #fffbeb;
  --amber-border: #fde68a;
  --red: #dc2626;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.04);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 20px;
}

.hero {
  text-align: center;
  margin-bottom: 28px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 34px;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.section.green {
  background: var(--green-soft);
  border-color: var(--green-border);
}

.section.amber {
  background: var(--amber-soft);
  border-color: var(--amber-border);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.section-header h2,
.section-header h3 {
  margin: 0 0 4px;
  font-size: 18px;
}

.section-header p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: #dcfce7;
  color: var(--green);
}

.badge-amber {
  background: #fef3c7;
  color: var(--amber);
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.metric-card,
.action-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.metric-card .label,
.action-card .label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.metric-card .value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.metric-card .sub {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

.trend-up { color: var(--green); }
.trend-down { color: var(--red); }

.progress {
  height: 8px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 12px;
}

.progress > span,
.progress-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #059669);
  border-radius: 999px;
  width: 0;
}

.progress-amber {
  background: #fde68a;
}

.progress-fill-amber {
  background: linear-gradient(90deg, #f59e0b, #d97706);
}

.mr-section {
  background: var(--amber-soft);
  border-color: var(--amber-border);
}

.chart-card-wide {
  grid-column: 1 / -1;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 0;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.topbar h1 {
  margin: 0 0 6px;
  font-size: 30px;
  letter-spacing: -0.02em;
}

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

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 14px;
  font-weight: 600;
}

.nav-links a.active {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 20px 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.filter-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr)) auto;
  gap: 12px;
  align-items: end;
}

.session-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.session-row label {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.session-row select {
  width: auto;
  min-width: 160px;
  padding: 8px 10px;
}

.filter-row label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comparison-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.machine-card {
  border-radius: 14px;
  padding: 20px;
  border: 1px solid var(--border);
}

.machine-card.old82 {
  background: rgba(37, 99, 235, 0.06);
  border-color: rgba(37, 99, 235, 0.2);
}

.machine-card.new82 {
  background: rgba(124, 58, 237, 0.06);
  border-color: rgba(124, 58, 237, 0.2);
}

.metric-value {
  margin: 8px 0 0;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.metric-unit {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  margin-bottom: 0;
}

.stat-card h3 {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
}

.stat-value.small {
  font-size: 18px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.chart-card h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

.table-card h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

.table-wrap {
  overflow-x: auto;
}

.entry-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
}

.form-actions {
  margin-top: 16px;
}

.btn.primary {
  background: var(--green);
  color: #fff;
}

.save-status {
  margin: 12px 0 0;
  color: var(--green);
  font-weight: 600;
}

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

.recent-item {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.recent-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.btn-xs {
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 8px;
}

.delete-entry-btn {
  color: #b91c1c;
  border-color: #fecaca;
  background: #fff5f5;
}

.delete-entry-btn:hover {
  color: #991b1b;
  border-color: #fca5a5;
  background: #fee2e2;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.chart-subtitle {
  margin: -4px 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.chart-wrap-tall {
  height: 360px;
}

.chart-wrap-wide {
  height: 320px;
}

.fold-section .fold-summary {
  margin-bottom: 16px;
}

.fold-section .fold-summary .stat-card {
  margin-bottom: 0;
}

.filters {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

.field label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}

.pill-group {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  justify-content: flex-end;
}

.pill {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
}

.pill.active {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--green);
  color: #fff;
}

.btn-secondary {
  background: var(--primary);
  color: #fff;
}

.btn-danger {
  background: var(--red);
  color: #fff;
}

.btn-outline {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}

.action-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.action-card h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.action-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.chart-card h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.chart-card p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.chart-wrap {
  position: relative;
  height: 260px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 10px 8px;
  text-align: left;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-good { color: var(--green); font-weight: 600; }
.status-bad { color: var(--red); font-weight: 600; }

.timer-card {
  border: 2px solid var(--green-border);
  background: var(--green-soft);
  border-radius: 18px;
  padding: 24px;
  text-align: center;
}

.timer-card .status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #dcfce7;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
}

.timer-value {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--green);
  margin: 8px 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

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

.hidden {
  display: none !important;
}

.btn.ghost {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid #dbe3ef;
  color: #334155;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.btn.ghost:hover {
  background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
  color: #1e40af;
  border-color: #c7d2fe;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.16);
  transform: translateY(-1px);
}

.btn.ghost:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.16);
}

.api-error-banner {
  background: #fef2f2;
  color: #991b1b;
  border-bottom: 1px solid #fecaca;
  padding: 12px 20px;
  font-size: 14px;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.login-wrap {
  max-width: 440px;
  margin: 40px auto;
}

.login-card h1 {
  margin: 0 0 8px;
}

.login-form {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.login-form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
}

.login-form select,
.login-form input {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.login-hint {
  margin-top: 16px;
  font-size: 13px;
}

.checkbox-label {
  display: flex !important;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  margin-top: 24px;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
}

@media (max-width: 900px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .filters,
  .form-grid,
  .comparison-grid,
  .summary-grid,
  .charts-grid,
  .entry-layout,
  .filter-row {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
  }

  .pill-group {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .action-card {
    flex-direction: column;
    align-items: stretch;
  }
}