/* ============================================
   D2Pi CFPS Web Platform - Modern Web Style
   ============================================ */

/* CSS Variables for Design System */
:root {
  /* Primary Colors - Professional Blue-Green */
  --color-primary: #0d7377;
  --color-primary-dark: #095a5d;
  --color-primary-light: #14a085;
  --color-accent: #14919b;
  
  /* Neutral Colors */
  --color-bg: #fafbfc;
  --color-surface: #ffffff;
  --color-border: #e1e4e8;
  --color-border-light: #f0f2f5;
  
  /* Text Colors */
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-text-muted: #718096;
  --color-text-placeholder: #a0aec0;
  
  /* Semantic Colors */
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #2563eb;
  
  /* Spacing Scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms 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-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Visually Hidden (for accessibility) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Container */
.container {
  min-height: 100vh;
  padding-bottom: 140px;
}

.scroll-area {
  width: 100%;
}

/* ============================================
   Header Section
   ============================================ */
.header-section {
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

/* Navigation */
.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* Language Switch Button */
.lang-switch-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs) var(--space-sm);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  min-width: 36px;
}

.lang-switch-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(10, 132, 97, 0.05);
}

.lang-text {
  font-weight: 600;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.06);
}

/* Title Section */
.title-section {
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.main-title {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
  letter-spacing: -1px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Intro Section */
.intro-section {
  max-width: 1200px;
  margin: 0 auto;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  text-align: center;
}

.intro-text {
  display: block;
  margin-bottom: var(--space-md);
  text-align: left;
}

/* Chinese text indent (2em), English no indent */
.intro-text.zh {
  text-indent: 2em;
}

.highlight-box {
  margin-top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: rgba(13, 115, 119, 0.04);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  display: inline-block;
  max-width: 100%;
}

.highlight-text {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
}

/* ============================================
   Section Common Styles
   ============================================ */
section {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.section-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 115, 119, 0.08);
}

.blue-icon .icon-text {
  color: var(--color-primary);
  font-size: 20px;
}

.green-icon .icon-text {
  color: var(--color-success);
  font-size: 20px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.3px;
}

/* Info Box */
.info-box {
  background: rgba(13, 115, 119, 0.04);
  border: 1px solid rgba(13, 115, 119, 0.1);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.info-icon {
  color: var(--color-primary);
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}

.info-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   Parameters Section
   ============================================ */
.params-section {
  background: var(--color-surface);
}

.param-item {
  margin-bottom: var(--space-2xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.param-item:last-child {
  margin-bottom: 0;
}

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

.param-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Stepper */
.stepper {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.stepper-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 18px;
  background: var(--color-bg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.stepper-btn:hover {
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.06);
}

.stepper-btn:active {
  background: rgba(13, 115, 119, 0.12);
}

.stepper-input {
  width: 80px;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  background: transparent;
  border: none;
  outline: none;
  padding: 0 var(--space-sm);
}

.stepper-input.purple {
  color: var(--color-accent);
}

.stepper-input::-webkit-inner-spin-button,
.stepper-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Slider */
.param-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
  margin: var(--space-md) 0;
}

.param-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 3px solid var(--color-surface);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast);
}

.param-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.purple-slider::-webkit-slider-thumb {
  background: var(--color-accent);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

/* Quick Buttons */
.quick-btns {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.quick-btn {
  padding: var(--space-sm) var(--space-md);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.quick-btn.active {
  background: rgba(13, 115, 119, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* kDa Box */
.kda-box {
  margin-top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.kda-label {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.kda-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-left: var(--space-xs);
}

.kda-unit {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-left: var(--space-xs);
}

/* Multi Group */
.multi-group-wrapper {
  margin-top: var(--space-lg);
}

.multi-group-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: rgba(13, 115, 119, 0.04);
  border: 1px solid rgba(13, 115, 119, 0.12);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.multi-group-toggle:hover {
  background: rgba(13, 115, 119, 0.08);
  border-color: rgba(13, 115, 119, 0.2);
}

.toggle-left {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-surface);
  font-size: 16px;
  font-weight: 600;
  transition: background var(--transition-fast);
}

.toggle-icon.open {
  background: var(--color-error);
}

.toggle-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.toggle-chevron {
  font-size: 16px;
  color: var(--color-primary);
  transform: rotate(90deg);
  transition: transform var(--transition-base);
}

.toggle-chevron.open {
  transform: rotate(-90deg);
}

.multi-group-panel {
  margin-top: var(--space-md);
}

.group-item {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
}

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

.group-badge {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  background: rgba(13, 115, 119, 0.08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-left: var(--space-sm);
  flex: 1;
}

.group-delete {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 16px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.group-delete:hover {
  color: var(--color-error);
  background: rgba(220, 38, 38, 0.08);
}

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

.group-label {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.mini-stepper {
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.mini-stepper-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mini-stepper-btn:hover {
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.06);
}

.mini-stepper-input {
  width: 60px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  background: transparent;
  border: none;
  outline: none;
}

.mini-stepper-input.purple {
  color: var(--color-accent);
}

.mini-stepper-input::-webkit-inner-spin-button,
.mini-stepper-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.mini-stepper-input {
  -moz-appearance: textfield;
}

.group-slider {
  width: 100%;
  margin-top: var(--space-sm);
}

.add-group-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  width: 100%;
  transition: all var(--transition-fast);
}

.add-group-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.02);
}

.add-icon {
  font-size: 16px;
  font-weight: 600;
}

/* ============================================
   Steps Section
   ============================================ */
.steps-section {
  background: var(--color-surface);
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.step-divider {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-warning);
  padding: var(--space-sm) var(--space-md);
  background: rgba(217, 119, 6, 0.08);
  border-radius: var(--radius-md);
  text-align: center;
  letter-spacing: 0.5px;
}

.step-item {
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-surface);
}

.step-item.enabled {
  border-color: var(--color-primary);
  background: rgba(13, 115, 119, 0.02);
  box-shadow: var(--shadow-sm);
}

.step-item:not(.enabled):not(.locked):not(.disabled):hover {
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-md);
}

.step-item.locked {
  background: var(--color-bg);
  cursor: not-allowed;
  opacity: 0.7;
}

.step-item.disabled {
  opacity: 0.6;
}

.step-item.locked-by-dep {
  opacity: 0.4;
  pointer-events: none;
}

.step-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
  gap: var(--space-md);
}

.step-left {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.step-name-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-sm);
}

.step-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.step-name2 {
  color: var(--color-accent);
}

.step-name.locked {
  color: var(--color-text-muted);
}

.step-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  line-height: 1.6;
  display: block;
}

.step-sub.locked {
  color: var(--color-text-muted);
}

.step-right {
  display: flex;
  flex-shrink: 0;
}

/* Toggle Switch */
.ios-switch {
  width: 48px;
  height: 26px;
  border-radius: 13px;
  background-color: var(--color-border);
  position: relative;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.ios-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background-color: var(--color-surface);
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.ios-switch.active {
  background-color: var(--color-primary);
}

.ios-switch.active::after {
  transform: translateX(22px);
}

.ios-switch.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.step-price {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.step-price.text-muted {
  color: var(--color-text-muted);
}

.step-price.text-slate-500 {
  color: var(--color-warning);
  padding: 2px 8px;
  background-color: rgba(217, 119, 6, 0.1);
  border-radius: var(--radius-sm);
}

.step-price.text-emerald-400 {
  color: var(--color-success);
}

.step-price.text-blue-400 {
  color: var(--color-primary);
}

.step-price.text-purple-400 {
  color: var(--color-accent);
}

.step-price.text-pink-400 {
  color: #db2777;
}

.step-price.text-amber-400 {
  color: #d97706;
}

.step-price.text-orange-400 {
  color: var(--color-warning);
}

.price-unit {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.7;
  margin-left: 2px;
}

.step-full-sub {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  text-align: left;
}

.gene-desc {
  display: block;
  line-height: 1.8;
}

.code-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.08);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin: 0 2px;
}

.link-text {
  color: var(--color-success);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: rgba(5, 150, 105, 0.3);
  text-underline-offset: 3px;
  cursor: pointer;
}

.protein-position {
  font-size: 13px;
  color: var(--color-warning);
  font-weight: 600;
  margin-top: var(--space-sm);
  margin-bottom: var(--space-xs);
  line-height: 1.6;
}

.protein-position span {
  display: block;
}

.gene-table-toggle {
  margin-top: var(--space-md);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-xs);
  cursor: pointer;
}

.gene-table-btn {
  font-size: 13px;
  color: var(--color-success);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(5, 150, 105, 0.08);
  border-radius: var(--radius-sm);
}

.gene-table-chevron {
  font-size: 14px;
  color: var(--color-success);
  transform: rotate(90deg);
}

.gene-table-chevron.open {
  transform: rotate(-90deg);
}

.gene-table {
  margin-top: var(--space-md);
  padding: var(--space-sm) 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.gene-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-xs) 0;
}

.gene-row .highlight {
  color: var(--color-success);
}

.gene-note {
  font-size: 12px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  line-height: 1.6;
}

/* ============================================
   Urgent Section
   ============================================ */
.urgent-section {
  display: flex;
  justify-content: center;
  background: var(--color-surface);
  padding: var(--space-lg) 0;
}

.urgent-section-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.urgent-section-inner:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.urgent-left {
  flex: 1;
}

.urgent-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.urgent-icon {
  font-size: 18px;
}

.urgent-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.urgent-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ============================================
   Summary Section
   ============================================ */
.summary-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-surface);
  border-bottom: none;
  padding: var(--space-2xl) var(--space-lg);
}

.fee-card {
  width: 100%;
  max-width: 1200px;
  background: var(--color-surface);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-md);
}

.fee-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
}

.fee-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.fee-icon {
  font-size: 14px;
  color: var(--color-success);
}

.fee-qty {
  font-size: 13px;
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.08);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.fee-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  font-size: 14px;
  color: var(--color-text-secondary);
}

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

.fee-name {
  color: var(--color-text-secondary);
}

.fee-value {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text-primary);
}

.fee-item.urgent {
  padding-top: var(--space-md);
  margin-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.fee-item.urgent .fee-name {
  color: #db2777;
  font-weight: 600;
}

.fee-item.urgent .fee-value {
  color: #db2777;
  font-weight: 600;
}

.disclaimer {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.feedback-section {
  width: 100%;
  max-width: 1200px;
  margin-bottom: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.feedback-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  display: block;
  margin-bottom: var(--space-sm);
}

.optional {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 400;
}

.feedback-input {
  width: 100%;
  height: 100px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: 14px;
  color: var(--color-text-primary);
  resize: none;
  outline: none;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.feedback-input:focus {
  border-color: var(--color-primary);
}

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

.reset-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: var(--space-xl);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  align-self: center;
}

.reset-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(13, 115, 119, 0.02);
}

.reset-icon {
  font-size: 14px;
}

.footer {
  width: 100%;
  max-width: 1200px;
  text-align: center;
  margin-bottom: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.footer-label {
  font-size: 13px;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-phone {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.5px;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-phone:hover {
  color: var(--color-primary-dark);
}

.footer-email {
  font-size: 14px;
  color: var(--color-text-secondary);
  display: block;
}

.email-highlight {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
}

.email-highlight:hover {
  text-decoration: underline;
}

/* ============================================
   Contact Form Section
   ============================================ */
.contact-form-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

.contact-form-section-inner {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.contact-form-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.contact-form-icon {
  font-size: 20px;
  color: var(--color-primary);
}

.contact-form-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.contact-form-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: block;
  margin-bottom: var(--space-xl);
}

.contact-form-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-item {
  margin-bottom: 0;
}

.form-item-row {
  display: flex;
  gap: var(--space-sm);
}

.form-input {
  width: 100%;
  height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  font-size: 15px;
  color: var(--color-text-primary);
  outline: none;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.08);
}

.form-input.error {
  border-color: var(--color-error);
  background: rgba(220, 38, 38, 0.02);
}

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

.form-input.flex-1 {
  flex: 1;
}

.send-code-btn {
  padding: 0 var(--space-md);
  height: 48px;
  background: rgba(13, 115, 119, 0.06);
  border: 1px solid rgba(13, 115, 119, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.send-code-btn:hover {
  background: rgba(13, 115, 119, 0.1);
}

.send-code-btn.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.terms-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin: var(--space-lg) 0;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.terms-row:hover {
  background: rgba(13, 115, 119, 0.02);
}

.checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--space-sm);
  color: var(--color-surface);
  font-size: 12px;
  transition: all var(--transition-fast);
  background: var(--color-surface);
}

.checkbox.checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox.checked::after {
  content: '';
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-bottom: 2px;
}

.terms-text {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.terms-link {
  font-size: 14px;
  color: var(--color-primary);
  cursor: pointer;
  text-decoration: none;
  font-weight: 500;
  margin: 0 2px;
}

.terms-link:hover {
  text-decoration: underline;
}

/* ============================================
   Submit Bar
   ============================================ */
.submit-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: transparent;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  z-index: 100;
}

.submit-bar-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-md) var(--space-lg);
}

.total-display {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-sm);
}

.total-label {
  font-size: 12px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Desktop: show full label, hide mobile label */
.total-label-full {
  display: inline;
}

.total-label-mobile {
  display: none;
}

.total-value-wrap {
  display: flex;
  align-items: baseline;
}

.total-currency {
  font-size: 16px;
  color: var(--color-success);
  margin-right: 2px;
  font-weight: 600;
}

.total-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.bottom-buttons {
  display: flex;
  gap: var(--space-sm);
  width: 100%;
}

.contact-info-bar {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  gap: 4px;
  flex-shrink: 0;
}

.contact-info-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.contact-info-label {
  font-size: 12px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-info-phone {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  line-height: 1.2;
  transition: color var(--transition-fast);
}

.contact-info-phone:hover {
  color: var(--color-primary-dark);
}

.contact-info-email {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.contact-info-email a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.contact-info-email a:hover {
  text-decoration: underline;
}

.submit-btn {
  flex: 1;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-surface);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.submit-btn:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.submit-btn.confirm-submit {
  background: var(--color-success);
}

.submit-btn.confirm-submit:hover {
  background: #047857;
}

/* ============================================
   Toast
   ============================================ */
.toast {
  position: fixed;
  top: 45%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: 14px;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: 1200;
  max-width: 320px;
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.toast.show {
  opacity: 1;
}

/* ============================================
   Modals
   ============================================ */
.modal-mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
  padding: var(--space-lg);
}

.modal-mask.show {
  opacity: 1;
}

.modal-container {
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  position: relative;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.modal-body {
  flex: 1;
  padding: var(--space-lg) var(--space-xl);
  overflow-y: auto;
}

.modal-submit-btn {
  width: 100%;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-surface);
  margin-top: var(--space-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-submit-btn:hover {
  background: var(--color-primary-dark);
}

.terms-content {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  padding: var(--space-sm) 0;
  max-height: 50vh;
  overflow-y: auto;
}

.terms-content strong,
.terms-content b {
  color: var(--color-text-primary);
  font-weight: 600;
}

.modal-close-btn {
  width: 100%;
  height: 44px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-top: var(--space-lg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--color-border-light);
}

/* Feedback Form */
.feedback-form {
  padding: var(--space-sm) 0;
}

.feedback-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.feedback-type-wrap {
  margin-bottom: var(--space-md);
}

.picker-box {
  width: 100%;
  height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  font-size: 15px;
  color: var(--color-text-primary);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  transition: border-color var(--transition-fast);
}

.picker-box:focus {
  border-color: var(--color-primary);
}

.picker-box option {
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.feedback-textarea {
  width: 100%;
  height: 120px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: 14px;
  color: var(--color-text-primary);
  resize: none;
  outline: none;
  font-family: inherit;
  margin-bottom: var(--space-md);
  transition: border-color var(--transition-fast);
}

.feedback-textarea:focus {
  border-color: var(--color-primary);
}

.feedback-contact {
  width: 100%;
  height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  font-size: 15px;
  color: var(--color-text-primary);
  outline: none;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.feedback-contact:focus {
  border-color: var(--color-primary);
}

/* Tech Content */
.tech-content {
  padding: var(--space-sm) 0;
}

.tech-lab-info {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.tech-lab-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.tech-lab-subtitle {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.tech-lab-address {
  font-size: 13px;
  color: var(--color-text-muted);
}

.tech-paragraph {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  text-align: justify;
}

.tech-links {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.tech-link-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.tech-link-item:hover {
  background: rgba(13, 115, 119, 0.04);
  border-color: rgba(13, 115, 119, 0.1);
}

.tech-link-item .link-icon {
  font-size: 16px;
  color: var(--color-primary);
}

.tech-link-item .link-text {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
}

/* Confirm Modal */
.confirm-modal .modal-body {
  text-align: center;
}

.confirm-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.confirm-buttons {
  display: flex;
  gap: var(--space-md);
}

.confirm-cancel-btn,
.confirm-ok-btn {
  flex: 1;
  height: 44px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.confirm-cancel-btn:hover {
  background: var(--color-border-light);
}

.confirm-ok-btn {
  background: var(--color-primary);
  border: none;
  color: var(--color-surface);
}

.confirm-ok-btn:hover {
  background: var(--color-primary-dark);
}

/* Success Modal */
.success-modal {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}

.success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--color-surface);
  margin: 0 auto var(--space-lg);
}

.success-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.success-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.success-btn {
  width: 100%;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-surface);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.success-btn:hover {
  background: var(--color-primary-dark);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Mobile styles (max-width: 767px) */
@media (max-width: 767px) {
  /* Navigation Mobile Optimization - Two rows layout */
  .nav-bar {
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
  }

  .logo-wrap {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
  }

  .logo-text {
    font-size: 18px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: inline-block;
    max-width: 100%;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: var(--space-sm);
    margin-left: 0;
    margin-top: var(--space-xs);
    padding-top: var(--space-xs);
    border-top: 1px solid var(--color-border);
    order: 3;
  }

  .nav-link {
    font-size: 14px;
    padding: var(--space-xs) var(--space-sm);
    white-space: nowrap;
  }
  
  .lang-switch-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: 13px;
    min-width: 36px;
    order: 2;
    margin-left: auto;
  }

  /* Bottom padding for fixed submit bar - reduced for mobile */
  .container {
    padding-bottom: 120px;
  }

  /* Bottom buttons mobile */
  .bottom-buttons {
    flex-direction: column;
  }

  .submit-btn {
    width: 100%;
    height: 48px;
    flex: none;
  }
  
  /* Mobile: Hide contact info in submit bar */
  .contact-info-bar {
    display: none;
  }
  
  /* Mobile: Simplified total display - label and price in one row */
  .total-display {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    gap: var(--space-sm);
  }
  
  /* Mobile: hide full label, show mobile label */
  .total-label-full {
    display: none;
  }
  
  .total-label-mobile {
    display: inline;
  }
  
  .total-label {
    font-size: 14px;
    margin-bottom: 0;
    white-space: nowrap;
  }
  
  .total-value-wrap {
    flex-shrink: 0;
  }
  
  .total-value {
    font-size: 24px;
  }
  
  /* Mobile: Hide submit bar when input is focused */
  .container.has-keyboard-open .submit-bar {
    display: none;
  }
  
  .container.has-keyboard-open {
    padding-bottom: 0;
  }
  
  /* Mobile main title - smaller font size */
  .main-title {
    font-size: 32px;
    letter-spacing: -0.5px;
  }
  
  /* Mobile intro section - left aligned, no indent for English */
  .intro-section {
    text-align: left;
    font-size: 14px;
  }
  
  .intro-text {
    text-indent: 0;
  }
  
  /* Mobile contact info - multi-line layout */
  .contact-info-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }
  
  .contact-info-phone {
    font-size: 18px;
  }
}

@media (min-width: 768px) {
  .header-section,
  section {
    padding: var(--space-3xl) var(--space-2xl);
  }

  .nav-bar {
    margin-bottom: var(--space-3xl);
  }

  .logo-icon {
    width: 44px;
    height: 44px;
  }

  .logo-img {
    width: 32px;
    height: 32px;
  }

  .logo-text {
    font-size: 22px;
  }

  .nav-links {
    gap: var(--space-sm);
  }

  .nav-link {
    font-size: 15px;
    padding: var(--space-sm) var(--space-md);
  }

  .main-title {
    font-size: 52px;
  }

  .intro-section {
    font-size: 16px;
  }

  .section-title {
    font-size: 24px;
  }

  .param-label {
    font-size: 17px;
  }

  .quick-btns {
    max-width: 400px;
  }

  .submit-bar {
    padding: var(--space-md) var(--space-2xl) var(--space-lg);
  }

  .total-value {
    font-size: 32px;
  }

  .submit-btn,
  .phone-btn {
    height: 52px;
    font-size: 16px;
  }

  .modal-container {
    max-width: 520px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 100%;
  }

  .main-title {
    font-size: 56px;
  }
}

@media (min-width: 1280px) {
  .header-section,
  section {
    padding-left: var(--space-3xl);
    padding-right: var(--space-3xl);
  }

  .submit-bar {
    padding-left: var(--space-3xl);
    padding-right: var(--space-3xl);
  }
}