/* ==========================================
   LUCKY.COLORSTONE - Design System & Styles
   ========================================== */

/* Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,400&display=swap');

:root {
  /* Color Palette */
  --color-navy-dark: #0A1128;
  --color-navy: #1C2541;
  --color-navy-light: #3A506B;
  --color-navy-muted: #5C677D;
  --color-gold: #D4AF37;
  --color-gold-light: #F3E5AB;
  --color-gold-dark: #AA7C11;
  --color-gold-glow: rgba(212, 175, 55, 0.2);
  --color-bg-light: #F7F9FC;
  --color-white: #FFFFFF;
  
  /* CTAs & States */
  --color-green: #2EC4B6;
  --color-green-dark: #009688;
  --color-green-light: #E6F8F6;
  --color-red: #E63946;
  --color-red-light: #FFE3E3;
  --color-gray-border: #E2E8F0;
  --color-gray-bg: #EDF2F7;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease-out;
  
  /* Shadow Systems */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 8px 24px rgba(28, 37, 65, 0.06);
  --shadow-lg: 0 16px 32px rgba(28, 37, 65, 0.1);
  --shadow-gold: 0 8px 20px rgba(212, 175, 55, 0.15);
}

/* Reset & Base Rules */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #0A1128; /* Dark outer container for desktop mockups */
  color: #1E293B;
  line-height: 1.5;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

/* Mobile Frame Wrapper (Vibe: Mobile-first & LINE LIFF optimized) */
.app-container {
  width: 100%;
  max-width: 480px;
  height: 100vh;
  min-height: 100vh;
  background-color: var(--color-bg-light);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.4);
}

/* Fixed Navigation Header */
.app-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-border);
  z-index: 100;
  padding: 12px 16px 8px 16px;
  box-shadow: var(--shadow-sm);
}

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

.brand-logo {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 1px;
  color: var(--color-navy-dark);
  text-decoration: none;
  background: linear-gradient(135deg, var(--color-navy-dark) 30%, var(--color-gold-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
  border-radius: 50%;
  transition: var(--transition-fast);
}

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

/* Progress Stepper */
.stepper-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  position: relative;
  padding: 0 10px;
}

.stepper-line {
  position: absolute;
  top: 50%;
  left: 30px;
  right: 30px;
  height: 2px;
  background-color: var(--color-gray-border);
  transform: translateY(-50%);
  z-index: 1;
}

.stepper-line-progress {
  position: absolute;
  top: 50%;
  left: 30px;
  width: 0%;
  height: 2px;
  background-color: var(--color-gold);
  transform: translateY(-50%);
  z-index: 2;
  transition: var(--transition-smooth);
}

.step-node {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-border);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-navy-muted);
  transition: var(--transition-smooth);
}

.step-node.active {
  border-color: var(--color-gold);
  background-color: var(--color-navy);
  color: var(--color-gold);
  box-shadow: 0 0 10px var(--color-gold-glow);
}

.step-node.completed {
  border-color: var(--color-gold);
  background-color: var(--color-gold);
  color: var(--color-navy-dark);
}

.step-label-text {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-navy-muted);
  margin-top: 4px;
  display: none; /* Keep clean, we show label below */
}

.step-indicator-text {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* Main Content Views */
.app-content {
  flex: 1;
  overflow-y: auto;
  padding: 110px 16px 90px 16px;
  display: flex;
  flex-direction: column;
}

.step-view {
  display: none;
  animation: fadeIn 0.4s ease-out forwards;
}

.step-view.active {
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

/* Typography styles inside steps */
.step-title {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  color: var(--color-navy-dark);
  margin-bottom: 4px;
  font-weight: 700;
}

.step-subtitle {
  font-size: 14px;
  color: var(--color-navy-muted);
  margin-bottom: 20px;
}

/* Step 1: Wrist Measurement elements */
.wrist-visual-card {
  background-color: var(--color-white);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid rgba(212, 175, 55, 0.1);
}

.wrist-illustration-svg {
  width: 160px;
  height: 160px;
  margin-bottom: 12px;
}

.wrist-tip {
  font-size: 12px;
  color: var(--color-navy-muted);
  text-align: center;
  background-color: var(--color-bg-light);
  padding: 8px 12px;
  border-radius: 8px;
  width: 100%;
  border-left: 3px solid var(--color-gold);
}

.size-selection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.size-btn {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-border);
  color: var(--color-navy);
  border-radius: 12px;
  padding: 12px 0;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.size-btn:hover {
  border-color: var(--color-gold);
  background-color: rgba(212, 175, 55, 0.05);
}

.size-btn.active {
  background-color: var(--color-navy);
  border-color: var(--color-gold);
  color: var(--color-gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}

.size-btn span {
  font-size: 10px;
  opacity: 0.8;
  font-weight: 400;
}

/* Personalization Input */
.name-input-group {
  background-color: var(--color-white);
  padding: 16px;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  margin-bottom: 16px;
  border: 1px solid var(--color-gray-border);
}

.name-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.name-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  border: 1px solid var(--color-gray-border);
  border-radius: 10px;
  background-color: var(--color-bg-light);
  color: var(--color-navy);
  transition: var(--transition-fast);
  font-family: inherit;
}

.name-input:focus {
  outline: none;
  border-color: var(--color-gold);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px var(--color-gold-glow);
}

/* Step 2: Bead Size elements */
.bead-size-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bead-size-card {
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-border);
  border-radius: 16px;
  padding: 16px 20px;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.bead-size-card:hover {
  border-color: var(--color-gold-light);
}

.bead-size-card.active {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
  background: linear-gradient(to right, var(--color-white), rgba(212, 175, 55, 0.03));
}

.bead-size-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.bead-size-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.bead-preview-circle {
  background: radial-gradient(circle at 35% 35%, var(--color-gold-light) 0%, var(--color-gold) 60%, var(--color-gold-dark) 100%);
  border-radius: 50%;
  box-shadow: inset -2px -2px 6px rgba(0,0,0,0.3), 2px 4px 8px rgba(0,0,0,0.2);
}

.bead-size-details h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.bead-size-details p {
  font-size: 12px;
  color: var(--color-navy-muted);
}

.radio-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-gray-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.bead-size-card.active .radio-check {
  border-color: var(--color-gold);
}

.bead-size-card.active .radio-check::after {
  content: '';
  width: 10px;
  height: 10px;
  background-color: var(--color-gold);
  border-radius: 50%;
  display: block;
}

.bead-estimation-banner {
  margin-top: 24px;
  padding: 16px;
  background-color: var(--color-white);
  border-radius: 12px;
  border: 1px dashed var(--color-gold);
  text-align: center;
  font-size: 13px;
  color: var(--color-navy-muted);
}

.bead-estimation-banner strong {
  color: var(--color-navy-dark);
}

/* Step 3: Interactive Canvas & Catalog */
.designer-workspace {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Interactive Canvas card */
.canvas-card {
  background-color: var(--color-white);
  border-radius: 20px;
  padding: 12px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(212, 175, 55, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.canvas-container {
  position: relative;
  width: 250px;
  height: 250px;
  margin: 8px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* SVG loop nodes animation */
.bead-node {
  cursor: pointer;
  transition: var(--transition-smooth);
}

.bead-node:hover {
  transform: scale(1.08);
}

.bead-image {
  animation: popIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  transform-origin: center;
}

@keyframes popIn {
  0% { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.bead-slot-border {
  transition: var(--transition-smooth);
}

.bead-node.active .bead-slot-border {
  stroke: var(--color-gold);
  stroke-dasharray: 4 2;
  animation: rotateDashed 10s linear infinite;
}

@keyframes rotateDashed {
  to { stroke-dashoffset: -20; }
}

.canvas-center-info {
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: var(--color-bg-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.05);
  border: 1px solid var(--color-gray-border);
  text-align: center;
  pointer-events: none;
}

.center-title {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--color-navy-muted);
  letter-spacing: 0.5px;
}

.center-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.center-subvalue {
  font-size: 10px;
  font-weight: 600;
}

.center-subvalue.fit {
  color: var(--color-green-dark);
}

.center-subvalue.overflow {
  color: var(--color-red);
}

/* Stats and controls layout inside Step 3 */
.canvas-stats-row {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 0 8px;
  margin-top: 4px;
}

.canvas-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.canvas-stat-label {
  font-size: 10px;
  color: var(--color-navy-muted);
  text-transform: uppercase;
}

.canvas-stat-val {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.canvas-controls-bar {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 8px;
  border-top: 1px solid var(--color-gray-border);
  padding-top: 8px;
}

.ctrl-btn {
  background: none;
  border: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 8px;
  transition: var(--transition-fast);
}

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

.ctrl-btn.reset-btn {
  color: var(--color-red);
}

.ctrl-btn.reset-btn:hover {
  background-color: var(--color-red-light);
}

/* Catalog Filter Tabs */
.catalog-filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none; /* Hide standard Firefox scrollbar */
}

.catalog-filters::-webkit-scrollbar {
  display: none; /* Hide Chrome/Safari scrollbar */
}

.filter-tab {
  white-space: nowrap;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-border);
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-navy);
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.filter-tab.active {
  background-color: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
}

/* Stone Catalog Cards Grid */
.stone-catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stone-card {
  background-color: var(--color-white);
  border-radius: 16px;
  padding: 12px;
  border: 1px solid var(--color-gray-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
}

.stone-card:hover {
  border-color: var(--color-gold);
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.1);
  transform: translateY(-2px);
}

.stone-img-container {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--color-bg-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.stone-img {
  width: 85%;
  height: 85%;
  object-fit: contain;
  transition: var(--transition-smooth);
}

.stone-card:hover .stone-img {
  transform: scale(1.1) rotate(5deg);
}

.info-icon-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-gray-border);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-navy);
  cursor: pointer;
  transition: var(--transition-fast);
  z-index: 10;
}

.info-icon-btn:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.stone-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stone-name-th {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.stone-name-en {
  font-size: 11px;
  color: var(--color-navy-muted);
  line-height: 1.2;
}

.stone-price-row {
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stone-price-tag {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-gold-dark);
}

.stone-add-btn {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-navy);
  color: var(--color-navy);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.stone-add-btn:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
}

/* Mixed Bead Size Selector - appears only when Mixed Sizes is active in step 3 */
.mixed-size-selector-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-white);
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--color-gold);
  margin-bottom: 8px;
}

.mixed-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.mixed-toggles {
  display: flex;
  gap: 4px;
}

.mixed-toggle-btn {
  background: none;
  border: 1px solid var(--color-gray-border);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.mixed-toggle-btn.active {
  background-color: var(--color-gold);
  color: var(--color-navy-dark);
  border-color: var(--color-gold);
}

/* Step 4: Summary & Commercial elements */
.summary-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.summary-header {
  border-bottom: 2px dashed var(--color-gray-border);
  padding-bottom: 12px;
}

.summary-customer-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.summary-date {
  font-size: 12px;
  color: var(--color-navy-muted);
}

/* Specs Box (4-column layout) */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.spec-box {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-border);
  border-radius: 12px;
  padding: 10px 4px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.spec-box-label {
  font-size: 9px;
  color: var(--color-navy-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.spec-box-value {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

/* Itemized Billing */
.billing-card {
  background-color: var(--color-white);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-border);
}

.billing-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-navy-dark);
  border-bottom: 1px solid var(--color-gray-bg);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.billing-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.billing-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.billing-item-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.billing-item-thumbnail {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-gray-border);
}

.billing-thumbnail-img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.billing-item-name h5 {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.billing-item-name p {
  font-size: 11px;
  color: var(--color-navy-muted);
}

.billing-item-price {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

/* Pricing Logic styling */
.pricing-breakdown {
  margin-top: 16px;
  border-top: 1px solid var(--color-gray-bg);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

.price-row.subtotal {
  color: var(--color-navy-muted);
}

.price-row.subtotal .price-val {
  text-decoration: line-through;
}

.discount-box {
  background-color: var(--color-green-light);
  border: 1px solid rgba(46, 196, 182, 0.3);
  padding: 8px 12px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.discount-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-green-dark);
  text-transform: uppercase;
}

.discount-value {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-green-dark);
}

.price-row.total {
  margin-top: 8px;
  border-top: 2px solid var(--color-gray-border);
  padding-top: 12px;
}

.price-row.total .price-lbl {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.price-row.total .price-val {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-navy-dark);
}

/* Stone Meanings Section */
.meanings-card {
  background-color: var(--color-white);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-border);
}

.meanings-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-navy-dark);
  border-bottom: 1px solid var(--color-gray-bg);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.meanings-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.meaning-item {
  border-left: 2px solid var(--color-gold);
  padding-left: 10px;
}

.meaning-item-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.meaning-item-desc {
  font-size: 12px;
  color: var(--color-navy-muted);
  margin-top: 2px;
}

/* Trust Section */
.trust-disclaimer-box {
  background: linear-gradient(135deg, #FFFDF6 0%, #FFF9E6 100%);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.trust-icon {
  color: var(--color-gold-dark);
  margin-top: 2px;
}

.trust-text {
  font-size: 11px;
  line-height: 1.4;
  color: var(--color-navy-dark);
}

.trust-text strong {
  display: block;
  margin-bottom: 2px;
}

/* Sticky Footer Navigation */
.app-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-gray-border);
  z-index: 100;
  padding: 16px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.04);
  display: flex;
  gap: 12px;
}

.footer-btn {
  border-radius: 12px;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  outline: none;
  font-family: inherit;
}

.footer-btn.btn-back {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-gray-border);
  color: var(--color-navy);
  flex: 1;
}

.footer-btn.btn-back:hover {
  background-color: var(--color-gray-bg);
}

.footer-btn.btn-next {
  background-color: var(--color-navy);
  border: 1px solid var(--color-navy);
  color: var(--color-white);
  flex: 2;
  box-shadow: var(--shadow-sm);
}

.footer-btn.btn-next:hover {
  background-color: var(--color-navy-dark);
  border-color: var(--color-navy-dark);
  transform: translateY(-1px);
}

.footer-btn.btn-next:disabled {
  background-color: var(--color-gray-bg);
  border-color: var(--color-gray-border);
  color: var(--color-navy-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Checkout Button (high contrast green) */
.footer-btn.btn-order {
  background-color: var(--color-green);
  border: 1px solid var(--color-green);
  color: var(--color-white);
  flex: 2;
  box-shadow: 0 4px 12px rgba(46, 196, 182, 0.2);
}

.footer-btn.btn-order:hover {
  background-color: var(--color-green-dark);
  border-color: var(--color-green-dark);
}

/* Modals & Backdrop */
.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(10, 17, 40, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-backdrop.show {
  display: flex;
  animation: fadeInBackdrop 0.25s ease-out forwards;
}

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

.modal-content-card {
  background-color: var(--color-white);
  border-radius: 20px;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gold);
  overflow: hidden;
  animation: popInModal 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.2) forwards;
  transform-origin: center;
}

@keyframes popInModal {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy) 100%);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-family: 'Playfair Display', serif;
  color: var(--color-gold);
  font-size: 18px;
  font-weight: 700;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  opacity: 0.8;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  opacity: 1;
}

.modal-body {
  padding: 20px;
}

.modal-bead-img-row {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.modal-bead-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  background-color: var(--color-bg-light);
  border-radius: 50%;
  padding: 4px;
  border: 1px solid var(--color-gold);
  box-shadow: var(--shadow-sm);
}

.modal-stone-details {
  text-align: center;
}

.modal-stone-title-th {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.modal-stone-title-en {
  font-size: 13px;
  color: var(--color-navy-muted);
  margin-bottom: 12px;
}

.modal-stone-meaning-box {
  background-color: var(--color-bg-light);
  border-radius: 12px;
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-navy);
  border-left: 3px solid var(--color-gold);
  margin-bottom: 16px;
}

.modal-stone-price {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-gold-dark);
  margin-bottom: 20px;
}

.modal-action-btn {
  background-color: var(--color-navy);
  border: 1px solid var(--color-navy);
  color: var(--color-white);
  width: 100%;
  padding: 12px 0;
  font-size: 14px;
  font-weight: 700;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal-action-btn:hover {
  background-color: var(--color-navy-dark);
  border-color: var(--color-navy-dark);
}

/* Custom Tooltip styling */
.tooltip-toast {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background-color: var(--color-navy-dark);
  color: var(--color-white);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
  z-index: 1000;
  white-space: nowrap;
}

.tooltip-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}