/* ============================================================
   CSS Variables – Light / Dark Theme
   ============================================================ */
:root {
  --brand-red: #B91A1C;
  --brand-red-hover: #9a1517;
  --brand-red-stroke: #BD1823;
  --brand-dark: #1D1E1C;
  --logo-dark: #1D1E1C;
  --logo-red: #B91A1C;
  --logo-stroke: #BD1823;
  --bg-primary: #f5f5f4;
  --bg-secondary: #ffffff;
  --bg-tertiary: #fafaf9;
  --bg-sidebar: #ffffff;
  --text-primary: #1D1E1C;
  --text-secondary: #5a6270;
  --text-muted: #8b939f;
  --border: #e7e5e4;
  --border-focus: #B91A1C;
  --accent: #B91A1C;
  --accent-hover: #9a1517;
  --accent-light: #fdeaea;
  --success: #059669;
  --success-light: #ecfdf5;
  --warning: #d97706;
  --danger: #B91A1C;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.1);
  --radius: 10px;
  --radius-sm: 6px;
  --header-height: 64px;
  --sidebar-width: 340px;
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --logo-dark: #e8eaed;
  --logo-red: #e03538;
  --logo-stroke: #e03538;
  --bg-primary: #121211;
  --bg-secondary: #1D1E1C;
  --bg-tertiary: #252624;
  --bg-sidebar: #1D1E1C;
  --text-primary: #e8eaed;
  --text-secondary: #a0a8b4;
  --text-muted: #6b7280;
  --border: #333431;
  --accent-light: #3d1819;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

/* ============================================================
   Password Lock Screen
   ============================================================ */
.lock-screen {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(185, 26, 28, 0.12), transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(29, 30, 28, 0.08), transparent 45%),
    var(--bg-primary);
}

.lock-card {
  width: 100%;
  max-width: 380px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem 1.75rem 1.75rem;
  animation: fadeSlideIn 0.35s ease both;
}

.lock-logo {
  width: 72px;
  height: 72px;
  margin: 0 auto 1rem;
}

.lock-logo svg {
  width: 100%;
  height: 100%;
  display: block;
}

.lock-card h1 {
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 0.35rem;
}

.lock-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.lock-card .form-group {
  margin-bottom: 1.25rem;
}

.lock-card input[type="password"] {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 1rem;
}

.lock-card input[type="password"]:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.lock-card input.error {
  border-color: var(--danger);
}

.lock-submit {
  width: 100%;
  justify-content: center;
}

html:not(.unlocked) {
  overflow: hidden;
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-logo {
  height: 52px;
  width: auto;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header-logo svg {
  height: 52px;
  width: 52px;
  display: block;
}

.logo-outline {
  fill: none;
  stroke: var(--logo-stroke);
  stroke-width: 3.9193;
  stroke-miterlimit: 10;
}

.logo-text { fill: var(--logo-dark); }
.logo-dark { fill: var(--logo-dark); }
.logo-red { fill: var(--logo-red); }

.header-title h1 {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.header-title span {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: block;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ============================================================
   Layout
   ============================================================ */
.app-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
  align-items: start;
}

.main-content { min-width: 0; }

/* ============================================================
   Cards & Sections
   ============================================================ */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: box-shadow var(--transition), background var(--transition);
  animation: fadeSlideIn 0.4s ease both;
}

.card:hover { box-shadow: var(--shadow-md); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background var(--transition);
}

.card-header:hover { background: var(--bg-tertiary); }

.card-header.active { border-bottom-color: var(--border); }

.card-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-icon svg { width: 18px; height: 18px; }

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.card-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.card-chevron {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition);
}

.card-header.active .card-chevron { transform: rotate(180deg); }

.card-body {
  padding: 0 1.25rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.card-body.open {
  max-height: 2000px;
  padding: 1.25rem;
}

/* ============================================================
   Form Elements
   ============================================================ */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

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

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

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(185, 26, 28, 0.15);
}

input.error, select.error, textarea.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220,38,38,.12);
}

textarea { resize: vertical; min-height: 100px; }

.field-error {
  font-size: 0.72rem;
  color: var(--danger);
  display: none;
}

.field-error.visible { display: block; }

/* Checkbox & Radio */
.checkbox-row, .radio-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  cursor: pointer;
}

.checkbox-row input, .radio-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.checkbox-row span, .radio-row span {
  font-size: 0.875rem;
}

.service-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.service-toggle:last-child { border-bottom: none; }

.service-options {
  margin-left: 2rem;
  padding: 0.75rem 0 0.75rem 1rem;
  border-left: 2px solid var(--accent-light);
  display: none;
  animation: fadeIn 0.3s ease;
}

.service-options.visible { display: block; }

.option-group {
  margin-bottom: 0.75rem;
}

.option-group-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.price-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.service-price-wrap {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  flex-shrink: 0;
}

.service-price {
  width: 118px;
  padding: 0.4rem 0.55rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: right;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.service-price:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(185, 26, 28, 0.15);
}

.service-price.price-modified {
  border-color: var(--warning);
  background: rgba(217, 119, 6, 0.08);
}

.btn-suggest-reset {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--accent);
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

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

/* ============================================================
   Custom Items
   ============================================================ */
.custom-item {
  display: grid;
  grid-template-columns: 1fr 140px 36px;
  gap: 0.5rem;
  align-items: end;
  margin-bottom: 0.5rem;
  animation: fadeSlideIn 0.3s ease;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; }

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

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

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

.btn-secondary:hover { background: var(--border); }

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

.btn-success:hover { filter: brightness(1.1); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 0.4rem;
}

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

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

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

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ============================================================
   Sidebar – Sticky Summary
   ============================================================ */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.summary-card {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  animation: fadeSlideIn 0.5s ease 0.1s both;
}

.summary-header {
  background: linear-gradient(135deg, var(--brand-red), var(--brand-red-stroke));
  color: #fff;
  padding: 1rem 1.25rem;
}

.summary-header h2 {
  font-size: 0.95rem;
  font-weight: 600;
}

.summary-body { padding: 1rem 1.25rem; }

.summary-items {
  max-height: 320px;
  overflow-y: auto;
  margin-bottom: 1rem;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
  animation: fadeIn 0.3s ease;
}

.summary-item-name {
  color: var(--text-secondary);
  flex: 1;
}

.summary-item-price {
  font-weight: 600;
  white-space: nowrap;
}

.summary-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 1.5rem 0;
}

.summary-totals {
  border-top: 2px solid var(--border);
  padding-top: 0.75rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.85rem;
}

.summary-row.discount { color: var(--success); }

.summary-row.total {
  font-size: 1.15rem;
  font-weight: 700;
  padding-top: 0.5rem;
  margin-top: 0.25rem;
  border-top: 1px solid var(--border);
  color: var(--accent);
}

/* ============================================================
   Offer Preview
   ============================================================ */
.offer-preview {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.7;
  white-space: pre-wrap;
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 120px;
  color: var(--text-primary);
  display: none;
}

.offer-preview.visible {
  display: block;
  animation: fadeSlideIn 0.4s ease;
}

/* ============================================================
   Toast Notification
   ============================================================ */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 4px solid var(--success);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.35s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.error { border-left-color: var(--danger); }

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============================================================
   Print / PDF Styles
   ============================================================ */
#print-area {
  display: none;
  white-space: pre-wrap;
  font-family: 'Segoe UI', system-ui, sans-serif;
}

@media print {
  body * { visibility: hidden; }
  #print-area, #print-area * { visibility: visible; }
  #print-area {
    display: block !important;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    padding: 2rem;
    font-size: 12pt;
    line-height: 1.7;
    color: #000;
    background: #fff;
    white-space: pre-wrap;
    word-wrap: break-word;
  }
  .header, .sidebar, .main-content, .toast { display: none !important; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 960px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    order: -1;
  }
  .custom-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .header { padding: 0 1rem; }
  .app-layout { padding: 1rem; }
  .form-grid { grid-template-columns: 1fr; }
  .btn-group { flex-direction: column; }
  .btn-group .btn { width: 100%; }
  .service-price-wrap { width: 100%; margin-left: 2rem; }
  .service-price { flex: 1; width: auto; }
}