/* ============================================
   客户画像系统 - Material Design 3 设计系统
   Google MD3 风格 + Teal 品牌色
   ============================================ */

/* --- MD3 Color Tokens --- */
:root {
  /* Primary - Teal 品牌色 */
  --md3-primary: #0D9488;
  --md3-on-primary: #FFFFFF;
  --md3-primary-container: #B2DFDB;
  --md3-on-primary-container: #004D40;

  /* Secondary */
  --md3-secondary: #14B8A6;
  --md3-on-secondary: #FFFFFF;
  --md3-secondary-container: #CCFBF1;
  --md3-on-secondary-container: #134E4A;

  /* Tertiary - 强调色 */
  --md3-tertiary: #EA580C;
  --md3-on-tertiary: #FFFFFF;
  --md3-tertiary-container: #FED7AA;
  --md3-on-tertiary-container: #7C2D12;

  /* Surface */
  --md3-background: #FAFDFC;
  --md3-on-background: #1A1C1E;
  --md3-surface: #FFFFFF;
  --md3-on-surface: #1A1C1E;
  --md3-surface-variant: #F0F4F3;
  --md3-on-surface-variant: #3F4947;
  --md3-surface-container: #F5F7F6;
  --md3-surface-container-high: #EEF1F0;

  /* Outline */
  --md3-outline: #D1D5D4;
  --md3-outline-variant: #E8EBEA;

  /* Status */
  --md3-error: #DC2626;
  --md3-on-error: #FFFFFF;
  --md3-success: #16A34A;
  --md3-warning: #F59E0B;

  /* Elevation Shadows (MD3) */
  --elevation-1: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --elevation-2: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --elevation-3: 0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.05);
  --elevation-4: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);

  /* Spacing (8dp grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Typography */
  --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 24px;
  --font-headline: 20px;
  --font-title: 16px;
  --font-body: 14px;
  --font-label: 12px;
  --font-small: 11px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--md3-background);
  color: var(--md3-on-surface);
  line-height: 1.6;
  min-height: 100dvh;
}

/* --- Layout --- */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-4);
  padding-bottom: calc(var(--space-12) + env(safe-area-inset-bottom, 0px));
}

@media (min-width: 768px) {
  .container {
    padding: var(--space-6);
    max-width: 800px;
  }
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--md3-on-surface);
}

h1 { font-size: var(--font-display); font-weight: 700; }
h2 { font-size: var(--font-headline); }
h3 { font-size: var(--font-title); font-weight: 600; }
h4 { font-size: var(--font-body); font-weight: 600; }

/* --- Buttons (MD3 Pill-shaped) --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-pill);
  font-family: var(--font-family);
  font-size: var(--font-body);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--md3-primary);
  color: var(--md3-on-primary);
  box-shadow: var(--elevation-1);
}

.btn-primary:hover {
  box-shadow: var(--elevation-2);
  background: #0F766E;
}

.btn-accent {
  background: var(--md3-tertiary);
  color: var(--md3-on-tertiary);
  box-shadow: var(--elevation-1);
}

.btn-accent:hover {
  box-shadow: var(--elevation-2);
  background: #C2410C;
}

.btn-secondary {
  background: var(--md3-surface-variant);
  color: var(--md3-on-surface-variant);
}

.btn-secondary:hover {
  background: var(--md3-surface-container-high);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Ripple effect */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: currentColor;
  opacity: 0;
  transition: opacity 0.2s;
}

.btn:active::after {
  opacity: 0.12;
}

/* --- Cards (MD3 Surface Container) --- */
.card {
  background: var(--md3-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--elevation-1);
  border: 1px solid var(--md3-outline-variant);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: var(--elevation-2);
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-title);
  font-weight: 600;
  color: var(--md3-on-surface);
}

.card-subtitle {
  font-size: var(--font-label);
  color: var(--md3-on-surface-variant);
  margin-top: var(--space-1);
  line-height: 1.5;
}

/* --- Form Elements (MD3 Filled Text Field) --- */
.form-group {
  margin-bottom: var(--space-4);
  position: relative;
}

.form-label {
  display: block;
  font-size: var(--font-label);
  font-weight: 500;
  color: var(--md3-on-surface-variant);
  margin-bottom: var(--space-1);
  transition: color 0.2s;
}

.form-label .required {
  color: var(--md3-error);
  margin-left: 2px;
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-4);
  border: 1.5px solid var(--md3-outline);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-body);
  color: var(--md3-on-surface);
  background: var(--md3-surface);
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  outline: none;
}

.form-input::placeholder {
  color: #C4C8CC;
  font-style: italic;
}

.form-input:focus {
  border-color: var(--md3-primary);
  border-width: 2px;
  padding: 0 calc(var(--space-4) - 0.5px);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
}

.form-input:hover:not(:focus) {
  border-color: var(--md3-on-surface-variant);
}

.form-input.error {
  border-color: var(--md3-error);
  background: #FEF2F2;
}

.form-input.error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.form-textarea {
  width: 100%;
  min-height: 96px;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--md3-outline);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-body);
  color: var(--md3-on-surface);
  background: var(--md3-surface);
  resize: vertical;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  outline: none;
  line-height: 1.6;
}

.form-textarea:focus {
  border-color: var(--md3-primary);
  border-width: 2px;
  padding: calc(var(--space-3) - 0.5px) calc(var(--space-4) - 0.5px);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
}

.form-textarea::placeholder {
  color: #C4C8CC;
  font-style: italic;
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%233F4947' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

.form-helper {
  font-size: var(--font-small);
  color: var(--md3-on-surface-variant);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.form-error {
  font-size: var(--font-small);
  color: var(--md3-error);
  margin-top: var(--space-1);
  display: none;
  align-items: center;
  gap: var(--space-1);
}

.form-error.visible {
  display: flex;
}

/* Form Row */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 480px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* --- Section Headers with Icons --- */
.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

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

.section-icon.primary {
  background: var(--md3-primary-container);
  color: var(--md3-on-primary-container);
}

.section-icon.secondary {
  background: var(--md3-secondary-container);
  color: var(--md3-on-secondary-container);
}

.section-icon.tertiary {
  background: var(--md3-tertiary-container);
  color: var(--md3-on-tertiary-container);
}

.section-info h3 {
  margin: 0;
  font-size: var(--font-title);
}

.section-info p {
  font-size: var(--font-label);
  color: var(--md3-on-surface-variant);
  margin: 0;
}

/* --- Divider --- */
.divider {
  height: 1px;
  background: var(--md3-outline-variant);
  margin: var(--space-5) 0;
}

/* --- Stepper (MD3) --- */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--md3-surface);
  border-bottom: 1px solid var(--md3-outline-variant);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--elevation-1);
}

.step-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-pill);
  transition: background-color 0.2s ease;
  user-select: none;
}

.step-item:hover {
  background: var(--md3-surface-variant);
}

.step-item.active {
  background: var(--md3-primary-container);
}

.step-item.completed {
  background: var(--md3-secondary-container);
}

.step-indicator {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  background: var(--md3-outline-variant);
  color: var(--md3-on-surface-variant);
  transition: all 0.2s ease;
}

.step-item.active .step-indicator {
  background: var(--md3-primary);
  color: var(--md3-on-primary);
}

.step-item.completed .step-indicator {
  background: var(--md3-secondary);
  color: white;
}

.step-label {
  font-size: var(--font-label);
  font-weight: 500;
  color: var(--md3-on-surface-variant);
}

.step-item.active .step-label {
  color: var(--md3-on-primary-container);
  font-weight: 600;
}

.step-item.completed .step-label {
  color: var(--md3-on-secondary-container);
}

.step-connector {
  flex: 1;
  height: 2px;
  background: var(--md3-outline-variant);
  max-width: 48px;
  border-radius: 1px;
}

/* --- Bottom Bar --- */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--md3-surface);
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0px));
  box-shadow: 0 -2px 8px rgba(0,0,0,0.08);
  display: flex;
  gap: var(--space-2);
  z-index: 100;
  border-top: 1px solid var(--md3-outline-variant);
}

.bottom-bar .btn {
  flex: 1;
  height: 48px;
  font-size: var(--font-title);
}

/* --- Marketing Tip Card --- */
.tip-card {
  background: linear-gradient(135deg, var(--md3-primary-container) 0%, var(--md3-secondary-container) 100%);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: var(--space-4) 0;
  border: none;
}

.tip-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.tip-card-title {
  font-size: var(--font-label);
  font-weight: 600;
  color: var(--md3-on-primary-container);
}

.tip-card-content {
  font-size: var(--font-body);
  color: var(--md3-on-secondary-container);
  line-height: 1.6;
}

/* --- Score Indicator --- */
.score-card {
  background: var(--md3-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--elevation-2);
  border: 1px solid var(--md3-outline-variant);
  margin: var(--space-4) 0;
}

.score-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.score-label-text {
  font-size: var(--font-body);
  font-weight: 500;
  color: var(--md3-on-surface-variant);
}

.score-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--md3-primary);
}

.score-bar-bg {
  height: 8px;
  background: var(--md3-surface-variant);
  border-radius: 4px;
  overflow: hidden;
  margin: var(--space-3) 0;
}

.score-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--md3-primary), var(--md3-secondary));
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.2, 0, 0, 1);
}

.score-tags {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-small);
  color: var(--md3-on-surface-variant);
}

/* --- Success Page --- */
.success-container {
  text-align: center;
  padding: var(--space-8) var(--space-4);
}

.success-icon-wrapper {
  width: 88px;
  height: 88px;
  background: linear-gradient(135deg, var(--md3-primary), var(--md3-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  box-shadow: var(--elevation-3);
}

.success-icon-wrapper svg {
  width: 44px;
  height: 44px;
  color: white;
}

/* --- Suggestion List --- */
.suggestion-card {
  background: var(--md3-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--elevation-1);
  border: 1px solid var(--md3-outline-variant);
  margin: var(--space-4) 0;
  text-align: left;
}

.suggestion-card h3 {
  font-size: var(--font-title);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.suggestion-item {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--md3-outline-variant);
  font-size: var(--font-body);
  line-height: 1.7;
  color: var(--md3-on-surface);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

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

.suggestion-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--md3-primary);
  flex-shrink: 0;
  margin-top: 8px;
}

/* --- Collapse Panel --- */
.collapse-panel {
  border: 1px solid var(--md3-outline-variant);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--md3-surface);
}

.collapse-header {
  padding: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  background: var(--md3-surface-container);
  transition: background 0.2s;
}

.collapse-header:hover {
  background: var(--md3-surface-container-high);
}

.collapse-header h3 {
  margin: 0;
  font-size: var(--font-title);
}

.collapse-arrow {
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
  color: var(--md3-on-surface-variant);
}

.collapse-panel.open .collapse-arrow {
  transform: rotate(180deg);
}

.collapse-content {
  padding: var(--space-4);
  display: none;
  animation: slideDown 0.25s ease;
}

.collapse-panel.open .collapse-content {
  display: block;
}

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

/* --- Spinner --- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: var(--space-2);
}

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

/* --- Checkbox --- */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--font-body);
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--md3-primary);
  cursor: pointer;
}

/* --- Radio Type Selector --- */
.checkbox-label:has(input:checked) {
  border-color: var(--md3-primary) !important;
  background: var(--md3-primary-container);
}

.checkbox-label:has(input:checked) div div:first-child {
  color: var(--md3-on-primary-container);
}

/* --- Dynamic Channel Rows --- */
.btn-add {
  width: 44px;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1.5px dashed var(--md3-outline);
  background: var(--md3-surface);
  color: var(--md3-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.btn-add:hover {
  background: var(--md3-primary-container);
  border-color: var(--md3-primary);
  color: var(--md3-on-primary-container);
}

.btn-remove {
  width: 36px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--md3-outline);
  background: var(--md3-surface);
  color: var(--md3-error);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.btn-remove:hover {
  background: #FEE2E2;
  border-color: var(--md3-error);
}

.channel-row {
  position: relative;
  margin-bottom: var(--space-2);
}

.channel-row .btn-remove-wrapper {
  position: absolute;
  right: -48px;
  top: 28px;
}

/* --- Quick Action Card --- */
.quick-action-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--md3-primary-container);
  border: 1px solid var(--md3-outline-variant);
  border-radius: var(--radius-md);
  text-decoration: none;
  margin-bottom: var(--space-4);
  transition: all 0.2s ease;
}

.quick-action-card:hover {
  background: var(--md3-secondary-container);
  box-shadow: var(--elevation-2);
  transform: translateY(-1px);
}

.quick-action-icon {
  width: 44px;
  height: 44px;
  background: var(--md3-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md3-on-primary);
  flex-shrink: 0;
}

.quick-action-text {
  flex: 1;
}

.quick-action-title {
  font-size: var(--font-title);
  font-weight: 600;
  color: var(--md3-on-primary-container);
}

.quick-action-desc {
  font-size: var(--font-label);
  color: var(--md3-on-surface-variant);
  margin-top: 2px;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========== Mobile Optimization (< 480px) ========== */
@media (max-width: 480px) {
  /* Container - tighter padding */
  .container {
    padding: var(--space-3);
    padding-bottom: calc(var(--space-10) + env(safe-area-inset-bottom, 0px));
  }

  /* Stepper - more compact */
  .stepper {
    padding: var(--space-2) var(--space-3);
    gap: var(--space-1);
  }

  .step-item {
    padding: 6px 10px;
    gap: var(--space-1);
  }

  .step-indicator {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }

  .step-label {
    font-size: 13px;
  }

  .step-connector {
    max-width: 32px;
  }

  /* Section headers - smaller icons */
  .section-header {
    gap: var(--space-2);
    margin-bottom: var(--space-3);
  }

  .section-icon {
    width: 32px;
    height: 32px;
  }

  .section-info h3 {
    font-size: 15px;
  }

  .section-info p {
    font-size: 12px;
  }

  /* Cards - tighter padding */
  .card {
    padding: var(--space-3);
  }

  .card .section-header {
    margin-bottom: var(--space-3);
  }

  /* Form - tighter spacing */
  .form-group {
    margin-bottom: var(--space-3);
  }

  .form-label {
    font-size: 13px;
    margin-bottom: 4px;
  }

  .form-input {
    height: 42px;
    font-size: 15px;
  }

  .form-textarea {
    min-height: 72px;
    font-size: 15px;
  }

  .form-helper {
    font-size: 12px;
  }

  .form-row {
    gap: var(--space-2);
  }

  /* Quick action card - more compact */
  .quick-action-card {
    padding: var(--space-3);
    gap: var(--space-2);
    margin-bottom: var(--space-3);
  }

  .quick-action-icon {
    width: 36px;
    height: 36px;
  }

  .quick-action-icon i,
  .quick-action-icon svg {
    width: 18px !important;
    height: 18px !important;
  }

  .quick-action-title {
    font-size: 14px;
  }

  .quick-action-desc {
    font-size: 12px;
  }

  /* Bottom bar - compact buttons, no wrapping */
  .bottom-bar {
    padding: var(--space-2) var(--space-3);
    padding-bottom: calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
    gap: var(--space-1);
  }

  .bottom-bar .btn {
    height: 44px;
    font-size: 13px;
    padding: 0 var(--space-2);
    gap: 4px;
    white-space: nowrap;
  }

  .bottom-bar .btn i,
  .bottom-bar .btn svg {
    width: 16px !important;
    height: 16px !important;
  }

  /* Nav bar - tighter */
  .top-nav {
    padding: var(--space-2) var(--space-3);
  }

  /* Tip card */
  .tip-card {
    padding: var(--space-3);
    margin: var(--space-3) 0;
  }

  .tip-card-title {
    font-size: 13px;
  }

  .tip-card-content {
    font-size: 13px;
  }

  /* Collapse panel */
  .collapse-header {
    padding: var(--space-3);
  }

  .collapse-content {
    padding: 0 var(--space-3) var(--space-3);
  }
}