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

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

/* ═══════════════════════════════════════════════════════════════════════════
   CSS VARIABLES - Light/Dark Mode
═══════════════════════════════════════════════════════════════════════════ */
:root {
  /* Dark Mode (default) */
  --bg-primary: #0a0f1a;
  --bg-secondary: #161b22;
  --bg-card: #1c2333;
  --bg-input: #0d1117;
  --bg-overlay: rgba(0, 0, 0, 0.8);
  --border: #30363d;
  --border-focus: #667eea;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-start: #667eea;
  --accent-end: #764ba2;
  --success: #3fb950;
  --warning: #d29922;
  --danger: #f85149;
  --btn-primary-bg: linear-gradient(135deg, #667eea, #764ba2);
  --btn-secondary-bg: transparent;
  --btn-secondary-border: #30363d;
  --modal-bg: #1c2333;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
  --bg-primary: #f6f8fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f3f4f6;
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --border: #d1d5db;
  --border-focus: #667eea;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --accent-start: #667eea;
  --accent-end: #764ba2;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --btn-primary-bg: linear-gradient(135deg, #667eea, #764ba2);
  --btn-secondary-bg: #f3f4f6;
  --btn-secondary-border: #d1d5db;
  --modal-bg: #ffffff;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  transition: background-color 0.3s, color 0.3s;
}

/* ═══════════════════════════════════════════════════════════════════════════
   PASSWORD OVERLAY
═══════════════════════════════════════════════════════════════════════════ */
#password-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.password-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  width: min(400px, 90vw);
  text-align: center;
  box-shadow: var(--shadow);
}

.password-card .lock-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.password-card h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.password-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 28px;
}

.password-input-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.password-input-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  text-align: center;
  letter-spacing: 0.1em;
  transition: border-color 0.2s, background-color 0.3s;
}

.password-input-group input:focus {
  outline: none;
  border-color: var(--border-focus);
}

.password-input-group button {
  width: 100%;
  padding: 12px;
  background: var(--btn-primary-bg);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: opacity 0.2s, transform 0.1s;
}

.password-input-group button:hover { opacity: 0.9; }
.password-input-group button:active { transform: scale(0.98); }

.password-error {
  color: var(--danger);
  font-size: 0.8rem;
  margin-top: 8px;
  min-height: 1.2em;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MAIN APP
═══════════════════════════════════════════════════════════════════════════ */
#app {
  display: none;
  flex-direction: column;
  min-height: 100vh;
}

/* HEADER */
header {
  background: linear-gradient(135deg, var(--accent-start) 0%, var(--accent-end) 100%);
  padding: 28px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header .header-inner {
  flex: 1;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: white;
}

header p {
  font-size: 0.875rem;
  opacity: 0.85;
  margin-top: 4px;
  color: white;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.theme-toggle,
.settings-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 8px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: background 0.2s, transform 0.1s;
}

.theme-toggle:hover,
.settings-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.theme-toggle:active,
.settings-btn:active {
  transform: scale(0.95);
}

/* MAIN CONTENT */
main {
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  padding: 32px 40px;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 24px;
  align-items: start;
}

/* CARDS */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
  transition: background-color 0.3s, border-color 0.3s;
}

.card:last-child { margin-bottom: 0; }

.card-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 14px;
  background: linear-gradient(180deg, var(--accent-start), var(--accent-end));
  border-radius: 2px;
}

/* FORM ELEMENTS */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

label span.badge {
  display: inline-block;
  background: rgba(102, 126, 234, 0.15);
  color: var(--accent-start);
  border: 1px solid rgba(102, 126, 234, 0.3);
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 1px 5px;
  margin-left: 5px;
  vertical-align: middle;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.3s;
  -webkit-appearance: none;
  appearance: none;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

[data-theme="light"] select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* PERSON SECTION */
.person-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px;
  background: var(--bg-input);
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 12px;
  transition: background-color 0.3s, border-color 0.3s;
}

.person-label {
  grid-column: 1 / -1;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-start);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.person-label::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-start);
}

.person-label.pascal::before {
  background: var(--accent-end);
}

.person-label.pascal {
  color: var(--accent-end);
}

/* RESULT PANEL */
.result-panel {
  position: sticky;
  top: 24px;
}

.result-total {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  border-radius: 12px;
  padding: 28px 24px;
  text-align: center;
  margin-bottom: 20px;
}

.result-total .label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.85;
  margin-bottom: 8px;
  color: white;
}

.result-total .amount {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: white;
}

.result-total .currency {
  font-size: 1.2rem;
  font-weight: 500;
  opacity: 0.85;
  margin-right: 4px;
}

.result-total .note {
  font-size: 0.75rem;
  opacity: 0.75;
  margin-top: 8px;
  color: white;
}

/* BREAKDOWN */
.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  transition: border-color 0.3s;
}

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

.breakdown-item .item-label {
  color: var(--text-secondary);
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.breakdown-item .item-detail {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.breakdown-item .item-value {
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.breakdown-item.subtotal {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 4px;
}

.breakdown-item.subtotal .item-label {
  font-weight: 600;
  color: var(--text-primary);
}

.breakdown-item.subtotal .item-value {
  color: var(--accent-start);
}

/* FACTORS DISPLAY */
.factor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.factor-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  transition: background-color 0.3s, border-color 0.3s;
}

.factor-tag .tag-value {
  font-weight: 700;
  color: var(--text-primary);
}

.factor-tag.boosted {
  border-color: rgba(248, 81, 73, 0.4);
  background: rgba(248, 81, 73, 0.08);
}

.factor-tag.boosted .tag-value {
  color: var(--danger);
}

.factor-tag.reduced {
  border-color: rgba(63, 185, 80, 0.4);
  background: rgba(63, 185, 80, 0.08);
}

.factor-tag.reduced .tag-value {
  color: var(--success);
}

/* MULTIPLIER DISPLAY */
.total-multiplier {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 16px;
  font-size: 0.875rem;
  transition: background-color 0.3s, border-color 0.3s;
}

.total-multiplier .mult-label {
  color: var(--text-secondary);
}

.total-multiplier .mult-value {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

/* DIVIDER */
.section-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
  transition: background-color 0.3s;
}

/* RESULT ACTIONS */
.result-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.reset-btn,
.pdf-btn {
  flex: 1;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

.reset-btn {
  background: transparent;
  color: var(--text-secondary);
}

.reset-btn:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
}

.pdf-btn {
  background: var(--btn-primary-bg);
  color: white;
  border: none;
}

.pdf-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.pdf-btn:active {
  transform: translateY(0);
}

/* RESPONSIVE */
@media (max-width: 960px) {
  main {
    grid-template-columns: 1fr;
    padding: 20px 16px;
  }

  header {
    padding: 20px 16px;
  }

  .result-panel {
    position: static;
  }

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

  .person-row {
    grid-template-columns: 1fr;
  }

  .result-actions {
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  header h1 { font-size: 1.3rem; }
  .result-total .amount { font-size: 2.2rem; }
  .header-actions {
    gap: 8px;
  }
  .theme-toggle,
  .settings-btn {
    width: 38px;
    height: 38px;
  }
}

/* LOCATION GROUP & ROUTE BUTTONS */
.location-group {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  align-items: end;
  transition: border-color 0.3s;
}

.route-buttons {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
}

.route-btn {
  flex: 1;
  padding: 9px 14px;
  border: none;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  letter-spacing: 0.02em;
}

.route-btn:hover  { opacity: 0.85; transform: translateY(-1px); }
.route-btn:active { transform: translateY(0); }

.route-btn-roger {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
}

.route-btn-pascal {
  background: linear-gradient(135deg, #11998e, #38ef7d);
  color: #0a0f1a;
}

@media (max-width: 900px) {
  .location-group {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .location-group {
    grid-template-columns: 1fr;
  }
  .route-buttons {
    flex-direction: column;
  }
}

/* ANIMATION */
.amount-update {
  animation: pulse 0.3s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   MODALS
═══════════════════════════════════════════════════════════════════════════ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--modal-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: min(600px, 95vw);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s, border-color 0.3s;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s;
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: color 0.2s, background-color 0.2s;
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-input);
}

.modal-body {
  padding: 24px;
  flex: 1;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  transition: border-color 0.3s;
}

.btn-primary,
.btn-secondary {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--btn-primary-bg);
  border: none;
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

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

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

/* ═══════════════════════════════════════════════════════════════════════════
   SETTINGS MODAL
═══════════════════════════════════════════════════════════════════════════ */
.settings-section {
  margin-bottom: 24px;
}

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

.settings-section h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s;
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 500px) {
  .settings-grid {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   PDF DESIGN MODAL
═══════════════════════════════════════════════════════════════════════════ */
.pdf-designs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 600px) {
  .pdf-designs {
    grid-template-columns: 1fr;
  }
}

.pdf-design-option {
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, background-color 0.3s;
  text-align: center;
}

.pdf-design-option:hover {
  border-color: var(--accent-start);
  transform: translateY(-2px);
}

.pdf-design-option.selected {
  border-color: var(--accent-start);
  background: rgba(102, 126, 234, 0.1);
}

.pdf-preview {
  background: white;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.pdf-preview-header {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--preview-color);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--preview-color);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pdf-preview-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pdf-preview-line {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
}

.pdf-preview-line.short {
  width: 60%;
}

.pdf-design-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

/* Print styles for PDF generation */
@media print {
  body {
    background: white !important;
  }
  .no-print {
    display: none !important;
  }
}