/* ──────────────────────────────────────────────────────────
   BuildMetrics — Professional Structural Analysis Platform
   Refined slate-blue palette · Linear/Vercel-inspired depth
   ────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── Design Tokens ─────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-page: #FAFAFA;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F4F4F5;
  --bg-muted: #E4E4E7;

  /* Borders */
  --border: #E4E4E7;
  --border-strong: #A1A1AA;

  /* Text */
  --text-primary: #09090B;
  --text-secondary: #52525B;
  --text-muted: #A1A1AA;
  --text-disabled: #D4D4D8;

  /* Accent — professional blue */
  --accent: #2563EB;
  --accent-hover: #1D4ED8;
  --accent-light: #EFF6FF;
  --accent-mid: #BFDBFE;

  /* Status colours */
  --green: #16A34A;
  --red: #DC2626;
  --amber: #D97706;
  --purple: #7C3AED;

  /* Status tints */
  --green-tint: #F0FDF4;
  --red-tint: #FEF2F2;
  --amber-tint: #FFFBEB;
  --purple-tint: #F5F3FF;

  /* Shape & Depth */
  --radius: 8px;
  --radius-sm: 5px;
  --radius-lg: 12px;
  --radius-xl: 14px;

  /* Shadows — tighter, more directional */
  --shadow-sm: 0 1px 2px rgba(9,9,11,0.05), 0 0 0 1px rgba(9,9,11,0.04);
  --shadow: 0 4px 8px rgba(9,9,11,0.06), 0 0 0 1px rgba(9,9,11,0.04);
  --shadow-lg: 0 12px 24px rgba(9,9,11,0.10), 0 0 0 1px rgba(9,9,11,0.05);
}

/* ─── Reset ─────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  font-size: 13.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: var(--bg-subtle);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-mid);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* ─── Typography ────────────────────────────────────────── */
h1 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.4px;
}

h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ─── Layout ────────────────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ─── Navbar (legacy — kept for reference; replaced by sidebar) */
.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}

.nav-badge {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--accent-mid);
  border-radius: 20px;
  padding: 2px 8px;
  letter-spacing: 0.2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ─── Unit Toggle ─────────────────────────────────────────── */
.unit-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-surface);
}

.unit-switch label {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  user-select: none;
}

.toggle-track {
  position: relative;
  width: 32px;
  height: 17px;
  background: var(--bg-muted);
  border-radius: 9px;
  cursor: pointer;
  transition: background 0.25s;
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 13px;
  height: 13px;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s;
}

#unit-toggle {
  display: none;
}

#unit-toggle:checked+.toggle-track {
  background: var(--accent);
}

#unit-toggle:checked+.toggle-track::after {
  transform: translateX(15px);
}

/* ─── Nav Buttons ─────────────────────────────────────────── */
.btn-nav {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 0.77rem;
  font-weight: 500;
  padding: 5px 11px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 5px;
}

.btn-nav:hover {
  background: var(--bg-subtle);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

/* ─── Main Layout ─────────────────────────────────────────── */
#main-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ─── Input Panel ─────────────────────────────────────────── */
#input-panel {
  width: 360px;
  min-width: 320px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* ─── Input Sections ─────────────────────────────────────── */
.input-section {
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 18px;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
  background: var(--bg-surface);
}

.section-header:hover {
  background: var(--bg-muted);
}

.section-icon {
  width: 24px;
  height: 24px;
  border: 1px solid var(--accent-mid);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  background: var(--accent-light);
  flex-shrink: 0;
}

.section-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

.section-chevron {
  color: var(--text-muted);
  font-size: 11px;
  transition: transform 0.2s;
}

.section-body {
  padding: 4px 18px 16px;
}

.input-section.collapsed .section-body {
  display: none;
}

.input-section.collapsed .section-chevron {
  transform: rotate(-90deg);
}

/* ─── Form Elements (beam page input panel) ─────────────── */
.form-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.form-row label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 108px;
  flex-shrink: 0;
}

/* Overrride inline-styled selects in beam input panel */
#input-panel select {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  color: var(--text-primary);
  background: #fff;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  cursor: pointer;
}
#input-panel select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.inp-num {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  padding: 8px 10px;
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.inp-num:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.inp-num[readonly] {
  background: var(--bg-subtle);
  color: var(--text-secondary);
}

.unit-tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 32px;
}

/* ─── Material Buttons ───────────────────────────────────── */
.material-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
  margin-bottom: 14px;
}

.material-btn {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 8px 4px;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  font-family: 'Inter', sans-serif;
}

.material-btn:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.material-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.mat-icon {
  font-size: 1.1rem;
  display: block;
  margin-bottom: 3px;
}

/* ─── Input Rows (Supports & Loads) ─────────────────────── */
.input-row {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 11px;
  margin-bottom: 7px;
  animation: slideIn 0.15s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.input-row select {
  background: white;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 0.79rem;
  font-family: 'Inter', sans-serif;
  padding: 5px 8px;
  margin-bottom: 8px;
  width: 100%;
  cursor: pointer;
}

.input-row select:focus {
  outline: none;
  border-color: var(--accent);
}

.support-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 7px;
}

.support-row select {
  margin: 0;
  width: auto;
}

.field-label {
  font-size: 0.73rem;
  color: var(--text-muted);
}

.unit-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.load-row-header {
  display: flex;
  gap: 5px;
  margin-bottom: 8px;
  align-items: center;
}

.load-row-header select {
  flex: 1;
  margin: 0;
}

.load-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px 10px;
  align-items: center;
}

.load-fields-grid label {
  font-size: 0.73rem;
  color: var(--text-secondary);
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.82rem;
  padding: 8px 14px;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-primary:active {
  background: #1E40AF;
  border-color: #1E40AF;
}

.btn-secondary {
  background: white;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 6px 10px;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.btn-remove {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 4px;
  line-height: 1;
  transition: all 0.15s;
}

.btn-remove:hover {
  color: var(--red);
  background: var(--red-tint);
}

.btn-add {
  background: transparent;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  padding: 7px 14px;
  cursor: pointer;
  width: 100%;
  text-align: center;
  transition: all 0.15s;
}

.btn-add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ─── Calculate Bar (beam analysis page) ───────────────── */
#calculate-bar {
  padding: 16px 18px;
  border-top: 2px solid var(--border);
  background: #fff;
  display: flex;
  gap: 8px;
  flex-direction: column;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.06);
  position: sticky;
  bottom: 0;
}

#btn-calculate {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 9px;
  letter-spacing: -0.01em;
  box-shadow: 0 2px 8px rgba(37,99,235,0.3);
  transition: all 0.15s;
}
#btn-calculate:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37,99,235,0.4);
}
#btn-calculate:active { transform: translateY(0); box-shadow: none; }
#btn-calculate:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

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

.calc-actions .btn {
  flex: 1;
  font-size: 0.82rem;
  padding: 8px;
  justify-content: center;
}

#calc-error {
  display: none;
  color: var(--red);
  background: var(--red-tint);
  border: 1px solid #FECACA;
  border-radius: var(--radius-sm);
  padding: 8px 11px;
  font-size: 0.78rem;
  animation: fadeIn 0.2s;
}

/* ─── Results Panel ──────────────────────────────────────── */
#results-panel {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px;
  background: var(--bg-page);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ─── Welcome Banner ─────────────────────────────────────── */
#welcome-banner {
  border: 1px solid var(--accent-mid);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  text-align: center;
  background: linear-gradient(145deg, #EFF6FF 0%, #DBEAFE 60%, #EFF6FF 100%);
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.35s ease;
  box-shadow: var(--shadow-sm);
}

.welcome-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.welcome-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.welcome-subtitle {
  color: var(--text-secondary);
  font-size: 0.87rem;
  max-width: 480px;
  margin: 0 auto 22px;
  line-height: 1.65;
}

.feature-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  justify-content: center;
}

.chip {
  background: white;
  border: 1px solid var(--accent-mid);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 500;
}

/* ─── Preview Container ── ───────────────────────────────── */
#preview-container {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
}

.preview-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

#svg-preview {
  width: 100%;
  height: 115px;
  display: block;
}

/* ─── Results Section ────────────────────────────────────── */
#results-section {
  display: none;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 0.35s ease;
}

#results-section.visible {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Section Label ──────────────────────────────────────── */
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

/* ─── Summary Badges ─────────────────────────────────────── */
.badges-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.badge-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 16px 18px;
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  border-top-color: rgba(255,255,255,0.8);
}

.badge-label {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.badge-value {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.badge-moment {
  border-top: 3px solid var(--accent);
}

.badge-shear {
  border-top: 3px solid var(--green);
}

.badge-deflection {
  border-top: 3px solid var(--purple);
}

.badge-ratio {
  border-top: 3px solid var(--amber);
}

/* ─── Diagram Cards ──────────────────────────────────────── */
.diagram-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.diagram-header {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 9px;
  background: var(--bg-surface);
}

.diagram-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-reactions {
  background: var(--accent);
}

.dot-sfd {
  background: var(--green);
}

.dot-bmd {
  background: var(--red);
}

.dot-deflection {
  background: var(--purple);
}

.diagram-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.diagram-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: auto;
}

.diagram-body {
  padding: 4px 0 0;
}

.diagram-svg {
  width: 100%;
  height: 210px;
  display: block;
  cursor: crosshair;
}

.diagram-svg-tall {
  height: 160px;
}

.diagram-legend {
  display: flex;
  gap: 16px;
  padding: 8px 20px 12px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.71rem;
  color: var(--text-muted);
}

.legend-swatch {
  width: 14px;
  height: 7px;
  border-radius: 2px;
}

/* ─── Results Table ──────────────────────────────────────── */
.results-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.results-card-header {
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.results-table th {
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 9px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.results-table td {
  padding: 9px 16px;
  border-bottom: 1px solid var(--border);
}

.result-row:last-child td {
  border-bottom: none;
}

.result-row:nth-child(even) td {
  background: #FAFAFA;
}

.res-label {
  color: var(--text-secondary);
}

.res-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-primary);
  font-weight: 500;
}

.res-location {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.result-row.highlight .res-value {
  color: var(--accent);
}

.result-row.deflection .res-value {
  color: var(--purple);
}

.result-row.reaction .res-value {
  color: var(--green);
}

.result-row.bm-pos .res-value {
  color: var(--green);
}

.result-row.bm-neg .res-value {
  color: var(--red);
}

.result-row.spanratio .res-value {
  color: var(--amber);
}

/* ─── Export Section ─────────────────────────────────────── */
#export-section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.export-info { flex: 1; min-width: 160px; }

.export-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.export-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

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

/* Shared export button base */
.export-buttons button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  font-size: 0.83rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  line-height: 1;
}
.export-buttons button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

#btn-export-pdf {
  background: #DC2626;
  color: #fff;
  border: 1.5px solid #DC2626;
  box-shadow: 0 2px 6px rgba(220,38,38,0.2);
}
#btn-export-pdf:hover:not(:disabled) {
  background: #B91C1C;
  border-color: #B91C1C;
  box-shadow: 0 3px 10px rgba(220,38,38,0.35);
  transform: translateY(-1px);
}

#btn-export-csv {
  background: #fff;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
#btn-export-csv:hover:not(:disabled) {
  background: var(--bg-subtle);
  border-color: #94A3B8;
}

#btn-save-calc {
  background: #16A34A !important;
  color: #fff !important;
  border: 1.5px solid #16A34A !important;
  box-shadow: 0 2px 6px rgba(22,163,74,0.2);
}
#btn-save-calc:hover:not(:disabled) {
  background: #15803D !important;
  border-color: #15803D !important;
  box-shadow: 0 3px 10px rgba(22,163,74,0.35);
  transform: translateY(-1px);
}
#btn-save-calc:disabled {
  opacity: 0.4 !important;
  cursor: not-allowed !important;
}

/* ─── Disclaimer ─────────────────────────────────────────── */
.disclaimer {
  font-size: 0.73rem;
  color: var(--text-muted);
  text-align: center;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  line-height: 1.65;
}

/* ─── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from {
    transform: scale(0.97) translateY(8px);
    opacity: 0;
  }

  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.modal-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.modal-subtitle {
  font-size: 0.81rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-field {
  margin-bottom: 13px;
}

.modal-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.modal-field input {
  width: 100%;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.87rem;
  padding: 9px 12px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.modal-field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 24px;
}

.modal-actions button {
  flex: 1;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
  #main-container {
    flex-direction: column;
  }

  #input-panel {
    width: 100%;
    max-width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

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

  #results-panel {
    padding: 18px;
  }
}

@media (max-width: 600px) {
  #results-panel {
    padding: 14px;
  }

  .badges-grid {
    grid-template-columns: 1fr 1fr;
  }

  #export-section {
    flex-direction: column;
  }

  .export-buttons {
    width: 100%;
  }

  #btn-export-pdf,
  #btn-export-csv {
    width: 100%;
    justify-content: center;
  }


}

/* ─── Toast Notifications ────────────────────────────────── */
.bm-toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  min-width: 260px;
  max-width: 380px;
  padding: 13px 18px 13px 14px;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  line-height: 1.45;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  box-shadow: var(--shadow-lg);
}

.bm-toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.bm-toast--default {
  background: #18181B;
  color: #FAFAFA;
  border: 1px solid #3F3F46;
}

.bm-toast--success {
  background: var(--green-tint);
  color: #14532D;
  border: 1px solid #BBF7D0;
}

.bm-toast--error {
  background: var(--red-tint);
  color: #7F1D1D;
  border: 1px solid #FECACA;
}

.bm-toast-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Results Section Tabs ───────────────────────────────── */
#results-tabs {
  position: sticky;
  top: 60px;
  z-index: 50;
  background: var(--bg-page);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 0;
  margin: -24px -28px 20px;
  padding: 0 28px;
  display: none;
}

#results-tabs.visible {
  display: flex;
}

.results-tab {
  padding: 11px 16px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
  cursor: pointer;
}

.results-tab:hover {
  color: var(--text-secondary);
}

.results-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

@media (max-width: 960px) {
  #results-tabs {
    top: 60px;
    margin: -18px -18px 18px;
    padding: 0 18px;
  }
}

@media (max-width: 600px) {
  #results-tabs {
    top: 56px;
    overflow-x: auto;
    margin: -14px -14px 14px;
    padding: 0 14px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  #results-tabs::-webkit-scrollbar {
    display: none;
  }
}

/* ─── Danger Button ──────────────────────────────────────── */
.btn-danger {
  background: var(--red-tint);
  color: var(--red);
  border: 1px solid #FECACA;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.82rem;
  padding: 8px 14px;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-danger:hover {
  background: var(--red);
  color: white;
  border-color: var(--red);
}

/* ─── Ghost Button (improved) ────────────────────────────── */
.btn-ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 6px 10px;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
  border-color: var(--border);
}

/* ─── Export Section (elevated — duplicate removed, handled above) ─── */