/* ============================================
   美容成果カルテ — Design System & Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #FDF7F7;
  --color-bg-alt: #FFFFFF;
  --color-surface: #FFFFFF;
  --color-surface-hover: #FFF5F5;
  --color-primary: #C77DA3;
  --color-primary-light: #E8B4CF;
  --color-primary-dark: #A45E82;
  --color-primary-bg: #FDF0F5;
  --color-gold: #D4A574;
  --color-gold-light: #E8C9A8;
  --color-gold-bg: #FFF8F0;
  --color-text: #2D2D2D;
  --color-text-secondary: #6B6B6B;
  --color-text-muted: #9E9E9E;
  --color-border: #F0E4E4;
  --color-border-strong: #E0D0D0;
  --color-success: #6BBF8A;
  --color-success-bg: #F0FAF4;
  --color-warning: #E8A84C;
  --color-warning-bg: #FFF8EE;
  --color-danger: #E06B6B;
  --color-danger-bg: #FFF0F0;
  --color-info: #6BA3E0;
  --color-info-bg: #F0F6FF;

  /* Typography */
  --font-main: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --font-accent: 'Outfit', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-md: 0.9375rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.375rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: 2.25rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 64px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
  --shadow-glow: 0 0 20px rgba(199,125,163,0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; display: block; }

button {
  font-family: var(--font-main);
  cursor: pointer;
  border: none;
  background: none;
  font-size: var(--font-size-md);
}

input, select, textarea {
  font-family: var(--font-main);
  font-size: var(--font-size-md);
  color: var(--color-text);
}

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

.sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition-base);
}

.sidebar.hidden {
  transform: translateX(-100%);
}

.sidebar-logo {
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.logo-icon {
  font-size: 1.75rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-glow);
}

.logo-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-md);
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  font-weight: 400;
  transition: all var(--transition-fast);
  cursor: pointer;
  margin-bottom: var(--space-xs);
}

.nav-item:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--color-primary-bg), #FCE8F1);
  color: var(--color-primary-dark);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.nav-item i {
  width: 20px;
  height: 20px;
  stroke-width: 1.75;
}

.sidebar-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.salon-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.main-content {
  flex: 1;
  margin-left: 0;
  transition: margin-left var(--transition-base);
  min-height: 100vh;
}

.main-content.with-sidebar {
  margin-left: var(--sidebar-width);
}

.page-container {
  padding: var(--space-xl) var(--space-2xl);
  max-width: 1400px;
  margin: 0 auto;
  animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* --- Page Header --- */
.page-header {
  margin-bottom: var(--space-2xl);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.page-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.page-header h2 i {
  color: var(--color-primary);
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.page-subtitle-detail {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* --- Detail Page Grid Layouts --- */
.detail-grid {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.detail-grid-profile {
  grid-template-columns: 1fr 2fr;
}

.detail-grid-half {
  grid-template-columns: 1fr 1fr;
}

.card {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.pricing-card-current {
  position: relative;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  right: 16px;
  background: var(--color-primary);
  color: white;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: bold;
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.card-title i {
  color: var(--color-primary);
  width: 20px;
  height: 20px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-size: var(--font-size-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn i {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 2px 8px rgba(199,125,163,0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(199,125,163,0.4);
}

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

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary-light);
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold), #C09060);
  color: white;
  box-shadow: 0 2px 8px rgba(212,165,116,0.3);
}

.btn-gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(212,165,116,0.4);
}

.btn-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid #FFD4D4;
}

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

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
}

/* --- Form Elements --- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.form-input {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(199,125,163,0.1);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* --- Badge / Tag --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.badge-primary {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
}

.badge-gold {
  background: var(--color-gold-bg);
  color: var(--color-gold);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

/* --- Stats Grid --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.stat-card .stat-value {
  font-family: var(--font-accent);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* --- Customer List --- */
.customer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.customer-card {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.customer-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.customer-card .customer-avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--border-radius-full);
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-gold-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: white;
  margin-bottom: var(--space-md);
}

.customer-card .customer-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.customer-card .customer-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.customer-card .customer-tags {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* --- Search Bar --- */
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-full);
  padding: var(--space-sm) var(--space-lg);
  margin-bottom: var(--space-xl);
  transition: all var(--transition-fast);
  max-width: 480px;
}

.search-bar:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(199,125,163,0.1);
}

.search-bar i {
  color: var(--color-text-muted);
  width: 18px;
  height: 18px;
}

.search-bar input {
  flex: 1;
  border: none;
  outline: none;
  background: none;
  font-size: var(--font-size-md);
}

/* --- Treatment Timeline --- */
.timeline {
  position: relative;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary-light), var(--color-border));
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
  animation: slideUp var(--transition-slow) both;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-2xl) + 5px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-primary-bg);
}

.timeline-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.timeline-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
}

.timeline-content:hover {
  box-shadow: var(--shadow-sm);
}

/* --- Photo Comparison --- */
.photo-compare-container {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: var(--color-bg);
  aspect-ratio: 3/4;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.photo-compare-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.photo-compare-slider {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4px;
  background: white;
  cursor: ew-resize;
  z-index: 10;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.photo-compare-slider::before {
  content: '⟷';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  color: var(--color-text-secondary);
}

.photo-label {
  position: absolute;
  bottom: var(--space-lg);
  padding: var(--space-xs) var(--space-md);
  background: rgba(0,0,0,0.6);
  color: white;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  z-index: 5;
  backdrop-filter: blur(8px);
}

.photo-label-before { left: var(--space-lg); }
.photo-label-after { right: var(--space-lg); }

.photo-side-by-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.photo-frame {
  border-radius: var(--border-radius);
  overflow: hidden;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  position: relative;
  aspect-ratio: 3/4;
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-frame .photo-frame-label {
  position: absolute;
  bottom: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 12px;
  background: rgba(0,0,0,0.5);
  color: white;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  backdrop-filter: blur(8px);
}

/* --- Upload Zone --- */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-bg);
}

.upload-zone:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
}

.upload-zone i {
  width: 48px;
  height: 48px;
  color: var(--color-primary-light);
  margin-bottom: var(--space-md);
}

.upload-zone p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.upload-preview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.upload-preview-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.upload-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.upload-preview-item .delete-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  background: rgba(0,0,0,0.6);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.upload-preview-item .delete-btn:hover {
  background: var(--color-danger);
}

/* --- Data Change Indicator --- */
.data-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-accent);
}

.data-change.positive { color: var(--color-danger); }
.data-change.negative { color: var(--color-success); }
.data-change.neutral { color: var(--color-text-muted); }

/* --- Report / Print Styles --- */
.report-container {
  background: white;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-2xl);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-lg);
}

.report-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 2px solid var(--color-primary-bg);
}

.report-header h2 {
  font-size: var(--font-size-2xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.report-section {
  margin-bottom: var(--space-2xl);
}

.report-section h3 {
  font-size: var(--font-size-lg);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn var(--transition-fast);
}

.modal-overlay.hidden {
  display: none;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: scaleIn var(--transition-base);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
}

.modal-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

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

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--border-radius-sm);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 500;
  animation: slideUp var(--transition-base);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toast-success { background: var(--color-success); }
.toast-error { background: var(--color-danger); }
.toast-info { background: var(--color-info); }

/* --- Login Page --- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FDF7F7 0%, #FFF0F5 50%, #FFF8F0 100%);
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(199,125,163,0.1) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
}

.login-page::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(212,165,116,0.1) 0%, transparent 70%);
  bottom: -80px;
  left: -80px;
  border-radius: 50%;
}

.login-card {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl) var(--space-2xl);
  max-width: 440px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.5);
  text-align: center;
  animation: scaleIn var(--transition-slow);
  position: relative;
  z-index: 1;
}

.login-card .logo-big {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.login-card h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.login-card .tagline {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xl);
}

.btn-google {
  background: #fff;
  color: #444;
  border: 2px solid #e0e0e0;
  font-weight: 500;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius);
  font-size: var(--font-size-md);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  cursor: pointer;
}

.btn-google:hover {
  border-color: #4285f4;
  box-shadow: 0 2px 8px rgba(66,133,244,0.2);
  transform: translateY(-1px);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.login-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  border-radius: var(--border-radius-lg);
  z-index: 10;
}

.login-loading.hidden {
  display: none;
}

.login-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold), #c49a4a);
  color: white;
  border: none;
}
.tabs {
  display: flex;
  gap: var(--space-xs);
  background: var(--color-bg);
  padding: 4px;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-xl);
}

.tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border-radius: 6px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.tab.active {
  background: var(--color-surface);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

/* --- DataTable --- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-md);
}

.data-table tr:hover td {
  background: var(--color-surface-hover);
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) * 2;
  color: var(--color-text-muted);
}

.empty-state i {
  width: 64px;
  height: 64px;
  color: var(--color-border-strong);
  margin-bottom: var(--space-lg);
}

.empty-state h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
}

/* --- Measurement Items --- */
.measurement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
}

.measurement-item {
  background: var(--color-bg);
  border-radius: var(--border-radius-sm);
  padding: var(--space-md);
  text-align: center;
}

.measurement-item .value {
  font-family: var(--font-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
}

.measurement-item .unit {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.measurement-item .label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* --- Product List --- */
.product-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.product-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.product-item:hover {
  background: var(--color-primary-bg);
}

.product-info {
  flex: 1;
}

.product-name {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 2px;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.product-price {
  font-family: var(--font-accent);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-gold);
  white-space: nowrap;
}

.product-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  margin-top: var(--space-md);
  border-top: 2px solid var(--color-border);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.product-total-value {
  font-family: var(--font-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-gold);
}

/* --- Journal List --- */
.journal-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.journal-item {
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--border-radius-sm);
  border-left: 4px solid var(--color-border);
  transition: all var(--transition-fast);
}

.journal-item:hover {
  box-shadow: var(--shadow-sm);
}

.journal-item.positive {
  border-left-color: var(--color-success);
  background: linear-gradient(135deg, var(--color-success-bg), var(--color-bg));
}

.journal-item.neutral {
  border-left-color: var(--color-gold);
  background: linear-gradient(135deg, var(--color-gold-bg), var(--color-bg));
}

.journal-item.negative {
  border-left-color: var(--color-danger);
  background: linear-gradient(135deg, var(--color-danger-bg), var(--color-bg));
}

.journal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xs);
}

.journal-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.journal-mood {
  font-size: var(--font-size-lg);
}

.journal-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.journal-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.journal-footer {
  margin-top: var(--space-sm);
}

/* --- Journal Page (Dedicated) --- */
.journal-date-group {
  margin-bottom: var(--space-xl);
}

.journal-date-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary-bg), transparent);
  border-radius: var(--border-radius-sm);
  border-left: 3px solid var(--color-primary);
}

.journal-date-label {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text);
}

.journal-date-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-surface);
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  font-weight: 500;
}

.journal-timeline-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-left: var(--space-lg);
  position: relative;
}

.journal-timeline-list::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary-light), var(--color-border));
  border-radius: 1px;
}

.journal-timeline-item {
  position: relative;
  padding-left: var(--space-xl);
  cursor: pointer;
}

.journal-timeline-dot {
  position: absolute;
  left: -1px;
  top: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border-strong);
  border: 2px solid var(--color-surface);
  z-index: 1;
  transition: all var(--transition-fast);
}

.journal-timeline-dot.positive {
  background: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-bg);
}

.journal-timeline-dot.neutral {
  background: var(--color-gold);
  box-shadow: 0 0 0 3px var(--color-gold-bg);
}

.journal-timeline-dot.negative {
  background: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-bg);
}

.journal-timeline-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.journal-timeline-item:hover .journal-timeline-card {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
  transform: translateX(4px);
}

.journal-timeline-item.positive .journal-timeline-card {
  border-left: 3px solid var(--color-success);
}

.journal-timeline-item.neutral .journal-timeline-card {
  border-left: 3px solid var(--color-gold);
}

.journal-timeline-item.negative .journal-timeline-card {
  border-left: 3px solid var(--color-danger);
}

.journal-timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.journal-timeline-customer {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text);
}

.journal-timeline-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.journal-timeline-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
  padding-left: var(--space-xs);
  border-left: 2px solid var(--color-primary-light);
}

.journal-timeline-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
  white-space: pre-line;
}

.journal-mood-badge {
  font-size: var(--font-size-xs);
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  font-weight: 500;
  white-space: nowrap;
}

.journal-mood-badge.positive {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.journal-mood-badge.neutral {
  background: var(--color-gold-bg);
  color: var(--color-gold);
}

.journal-mood-badge.negative {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--border-radius-sm);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

@media (max-width: 768px) {
  .journal-timeline-list {
    padding-left: var(--space-md);
  }

  .journal-timeline-list::before {
    left: 10px;
  }

  .journal-timeline-dot {
    left: -3px;
    width: 10px;
    height: 10px;
  }

  .journal-timeline-item {
    padding-left: var(--space-lg);
  }

  .journal-timeline-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

/* --- Visit Calendar --- */
.visit-calendar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-sm);
}

.visit-month {
  text-align: center;
  padding: var(--space-md) var(--space-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.visit-month:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.visit-month-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.visit-month-count {
  font-family: var(--font-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.visit-month-unit {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* --- Photo Gallery Placeholder --- */
.photo-gallery-placeholder .photo-side-by-side {
  gap: var(--space-md);
}

.photo-gallery-placeholder .photo-frame {
  aspect-ratio: auto;
  border-style: dashed;
}

/* --- Product Catalog Grid --- */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.catalog-item {
  position: relative;
  transition: all var(--transition-base);
}

.catalog-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.catalog-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.catalog-category-badge {
  font-size: var(--font-size-xs);
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  font-weight: 500;
}

.catalog-item-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.catalog-item-price {
  font-family: var(--font-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
}

.catalog-item-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.catalog-item-stats {
  display: flex;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.catalog-stat {
  flex: 1;
  text-align: center;
}

.catalog-stat-value {
  display: block;
  font-family: var(--font-accent);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.catalog-stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* --- Reproposal Alert List --- */
.reproposal-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.reproposal-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--border-radius-sm);
  background: var(--color-gold-bg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.reproposal-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.reproposal-item.overdue {
  background: var(--color-danger-bg);
}

.reproposal-customer {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
}

.reproposal-status {
  flex-shrink: 0;
}

.reproposal-action {
  flex-shrink: 0;
}

/* --- Purchase History Page --- */
.purchase-summary-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.purchase-summary-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.purchase-summary-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.purchase-summary-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.purchase-summary-icon i {
  width: 24px;
  height: 24px;
  color: white;
}

.purchase-summary-value {
  font-family: var(--font-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.purchase-summary-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.purchase-history-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.purchase-product-card {
  transition: all var(--transition-base);
  overflow: hidden;
}

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

.purchase-product-card.no-purchases {
  opacity: 0.6;
}

.purchase-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  cursor: pointer;
  padding: var(--space-sm) 0;
  user-select: none;
}

.purchase-card-info {
  flex: 1;
  min-width: 0;
}

.purchase-card-category {
  font-size: var(--font-size-xs);
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  font-weight: 500;
  display: inline-block;
  margin-bottom: var(--space-xs);
}

.purchase-card-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.purchase-card-price {
  font-family: var(--font-accent);
  font-size: var(--font-size-md);
  color: var(--color-gold);
  font-weight: 600;
}

.purchase-card-stats {
  display: flex;
  gap: var(--space-lg);
  flex-shrink: 0;
}

.purchase-card-stat {
  text-align: center;
  min-width: 70px;
}

.purchase-card-stat-value {
  display: block;
  font-family: var(--font-accent);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.purchase-card-stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.purchase-chevron {
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.purchase-chevron i {
  width: 20px;
  height: 20px;
}

.purchase-card-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  border-top: 0 solid var(--color-border);
}

.purchase-product-card.expanded .purchase-card-detail {
  max-height: 2000px;
  padding-top: var(--space-md);
  border-top-width: 1px;
  margin-top: var(--space-md);
}

.purchase-table-header-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  background: var(--color-bg);
  margin-bottom: var(--space-sm);
}

.purchase-table-col-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.purchase-sort-btn {
  padding: 2px 6px !important;
  min-width: unset;
}

.purchase-sort-btn i {
  width: 14px;
  height: 14px;
}

.purchase-table-body {
  display: flex;
  flex-direction: column;
}

.purchase-table-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
}

.purchase-table-row:last-child {
  border-bottom: none;
}

.purchase-table-row:hover {
  background: var(--color-primary-bg);
}

.purchase-table-cell {
  display: flex;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.purchase-customer-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  color: var(--color-primary-dark);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.purchase-customer-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.purchase-customer-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 600;
  flex-shrink: 0;
}

.purchase-qty {
  font-family: var(--font-accent);
  font-weight: 600;
}

.purchase-amount {
  font-family: var(--font-accent);
  font-weight: 600;
  color: var(--color-gold);
}

.purchase-date {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.purchase-card-empty {
  padding: var(--space-md) 0;
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

/* --- Purchase History Responsive --- */
@media (max-width: 768px) {
  .purchase-summary-cards {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .purchase-card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .purchase-card-stats {
    width: 100%;
    justify-content: space-between;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-sm);
  }

  .purchase-table-header-row,
  .purchase-table-row {
    grid-template-columns: 1.5fr 0.7fr 1fr 1fr;
    gap: var(--space-sm);
    padding: var(--space-sm);
  }

  .purchase-customer-avatar {
    display: none;
  }
}

@media (max-width: 480px) {
  .purchase-table-header-row,
  .purchase-table-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
  }

  .purchase-table-header-row .purchase-table-col-label:nth-child(3),
  .purchase-table-row .purchase-table-cell:nth-child(3) {
    display: none;
  }
}

/* --- Print Styles --- */
@media print {
  .sidebar, .page-header .btn, .no-print { display: none !important; }
  .main-content { margin-left: 0 !important; }
  .report-container { box-shadow: none; }
  body { background: white; }
}

/* --- Responsive --- */
/* --- Mobile Header --- */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  align-items: center;
  padding: 0 var(--space-md);
  gap: var(--space-sm);
}

.mobile-header-title {
  font-weight: 600;
  font-size: var(--font-size-md);
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-hamburger {
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-fast);
}

.btn-hamburger:hover {
  background: var(--color-bg);
}

.btn-hamburger i {
  width: 24px;
  height: 24px;
}

/* --- Sidebar Overlay --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.3);
  z-index: 199;
  backdrop-filter: blur(2px);
}

.sidebar-overlay:not(.hidden) {
  display: block;
}

/* --- Bottom Navigation --- */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  z-index: 100;
  justify-content: space-around;
  align-items: center;
  padding: 0 var(--space-sm);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-muted);
  font-size: 10px;
  font-weight: 500;
  min-width: 64px;
}

.bottom-nav-item i {
  width: 20px;
  height: 20px;
}

.bottom-nav-item.active {
  color: var(--color-primary);
}

.bottom-nav-item.active i {
  stroke-width: 2.5;
}

.bottom-nav-item:active {
  transform: scale(0.92);
}

/* --- Print Styles --- */
@media print {
  .sidebar, .mobile-header, .bottom-nav { display: none !important; }
  .main-content { margin-left: 0 !important; }
  .page-container { padding: 0 !important; }
}

/* =============================================
   TABLET (769px - 1024px)
   ============================================= */
@media (max-width: 1024px) {
  .mobile-header {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
    z-index: 200;
    transition: transform var(--transition-base);
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .main-content.with-sidebar {
    margin-left: 0;
    padding-top: 56px;
  }

  .bottom-nav:not(.hidden) {
    display: flex;
  }

  .main-content {
    padding-bottom: 72px;
  }

  .page-container {
    padding: var(--space-xl);
  }

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

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

  /* Detail page grids - profile stacks on tablet */
  .detail-grid-profile {
    grid-template-columns: 1fr !important;
  }
}

/* =============================================
   MOBILE (max-width: 768px)
   ============================================= */
@media (max-width: 768px) {
  .page-container {
    padding: var(--space-md);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .stat-card {
    padding: var(--space-md);
  }

  .stat-card .stat-value {
    font-size: var(--font-size-xl);
  }

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

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

  .photo-side-by-side {
    grid-template-columns: 1fr;
  }

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

  /* Page headers */
  .page-container h2 {
    font-size: var(--font-size-lg);
  }

  /* Reproposal alert items - stack vertically */
  .reproposal-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }

  .reproposal-item .reproposal-status {
    margin-left: 0;
  }

  /* Modal responsive */
  .modal-content {
    width: 95%;
    max-width: none;
    margin: var(--space-md);
    max-height: 85vh;
  }

  /* Filter tags scroll horizontally */
  .filter-tags {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-xs);
  }

  .filter-tags .tag {
    flex-shrink: 0;
  }

  /* Header with buttons - stack */
  .page-container > div:first-child {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  /* Treatment entry - full width sections */
  .treatment-section {
    padding: var(--space-md);
  }

  /* Chart container */
  .chart-container {
    height: 250px;
  }

  /* Customer detail tabs */
  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab {
    flex-shrink: 0;
    font-size: var(--font-size-xs);
    padding: var(--space-sm) var(--space-md);
  }

  /* Toast position above bottom nav */
  .toast-container {
    bottom: 80px;
  }

  /* Detail page grids - stack */
  .detail-grid-profile,
  .detail-grid-half {
    grid-template-columns: 1fr !important;
  }

  /* Page header - stack on mobile */
  .page-header {
    flex-direction: column;
    gap: var(--space-md);
  }

  .page-header > div:last-child {
    width: 100%;
  }

  .page-header > div:last-child > .btn {
    flex: 1;
  }

  /* Customer detail subtitle */
  .page-subtitle-detail {
    font-size: var(--font-size-xs);
  }

  /* Photo frame label - smaller on mobile */
  .photo-frame .photo-frame-label {
    font-size: 10px;
    padding: 2px 8px;
  }

  /* Visit calendar - 3 columns on mobile */
  .visit-calendar {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Data table - compact */
  .data-table th,
  .data-table td {
    padding: var(--space-sm);
    font-size: var(--font-size-xs);
  }

  /* Measurement grid - 2 cols on mobile */
  .measurement-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =============================================
   SMALL MOBILE (max-width: 480px)
   ============================================= */
@media (max-width: 480px) {
  .page-container {
    padding: var(--space-sm);
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
  }

  .stat-card {
    padding: var(--space-sm);
  }

  .stat-card .stat-icon {
    width: 32px;
    height: 32px;
  }

  .stat-card .stat-value {
    font-size: var(--font-size-lg);
  }

  .stat-card .stat-label {
    font-size: 10px;
  }

  .login-card {
    padding: var(--space-lg) var(--space-md);
    width: 95%;
  }

  .login-card h1 {
    font-size: var(--font-size-xl);
  }

  .btn-google {
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
  }

  /* Customer card compact */
  .customer-card {
    padding: var(--space-md);
  }

  /* Section headers */
  .section-title {
    font-size: var(--font-size-md);
  }
}