/* ==========================================
   EXPORTMATE BRAND STYLE SYSTEM (NAVY & TEAL)
   NO GLASSMORPHISM | FLAT & CLEAN LIGHT MODE
   ========================================== */

/* Biến màu sắc & Thiết lập chung */
:root {
  --color-primary-navy: #0B1F33;
  --color-export-teal: #00A889;
  --color-action-blue: #2878C8;
  --color-bg-main: #F5F8FA;
  --color-bg-card: #FFFFFF;
  --color-text-main: #17212B;
  --color-text-muted: #667582;
  --color-warning: #F59E0B;
  --color-critical: #D64545;
  --color-border: #E1E8ED;
  --color-hover-teal: #008f74;
  --color-hover-navy: #061320;
  
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --border-radius: 8px;
  --transition-speed: 0.2s;
}

/* Reset Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  font-family: var(--font-family);
  background-color: var(--color-bg-main);
  color: var(--color-text-main);
  line-height: 1.6;
  scrollbar-gutter: stable;
  -webkit-font-smoothing: antialiased;
}

/* Custom B2B Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E0;
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
  background: #A0AEC0;
}

/* Utilities */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

/* Header */
.app-header {
  background-color: var(--color-primary-navy);
  color: #FFFFFF;
  padding: 16px 24px;
  border-bottom: 3px solid var(--color-export-teal);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo-text {
  color: #FFFFFF;
}

.teal-text {
  color: var(--color-export-teal);
}

.event-tag {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  background-color: rgba(0, 168, 137, 0.2);
  color: var(--color-export-teal);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(0, 168, 137, 0.3);
}

/* Main Container */
.survey-container {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
}

/* Base Card Style */
.intro-section, .survey-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 40px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  margin-bottom: 40px;
}

/* Intro Section */
.eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-action-blue);
  margin-bottom: 8px;
}

h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-primary-navy);
  line-height: 1.3;
  margin-bottom: 24px;
  text-wrap: balance;
}

.intro-content p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  font-size: 15px;
}

.intro-content blockquote {
  background-color: var(--color-bg-main);
  border-left: 4px solid var(--color-action-blue);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--color-primary-navy);
  font-size: 15px;
  line-height: 1.5;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.privacy-note {
  font-size: 13px !important;
  color: var(--color-text-muted);
  margin-top: 24px;
}


.benefit-box {
  background-color: var(--color-bg-main);
  border-left: 4px solid var(--color-export-teal);
  padding: 20px;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  margin: 24px 0;
}

.benefit-box h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-navy);
  margin-bottom: 12px;
}

.benefit-box ul {
  list-style: none;
}

.benefit-box li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 14.5px;
  color: var(--color-text-main);
}

.benefit-box li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-export-teal);
  font-weight: bold;
}

/* Progress Bar */
.progress-wrapper {
  margin-bottom: 32px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.step-title {
  color: var(--color-primary-navy);
}

.progress-bar-bg {
  background-color: var(--color-border);
  height: 6px;
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  background-color: var(--color-export-teal);
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* Question Structure */
.question-group {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-bg-main);
}

.question-group:last-of-type {
  border-bottom: none;
  margin-bottom: 20px;
  padding-bottom: 0;
}

.question-label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-navy);
  margin-bottom: 16px;
}

.required {
  color: var(--color-critical);
}

/* Radio & Checkbox Cards (Modern UI) */
.radio-options, .checkbox-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checkbox-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 600px) {
  .checkbox-options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.option-card {
  display: flex;
  align-items: flex-start;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 14px 18px;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  font-size: 14.5px;
  position: relative;
  user-select: none;
}

.option-card input[type="radio"], 
.option-card input[type="checkbox"] {
  margin-top: 4px;
  margin-right: 14px;
  accent-color: var(--color-export-teal);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.option-card:hover {
  border-color: var(--color-action-blue);
  background-color: rgba(40, 120, 200, 0.02);
}

/* Active styles on selection */
.option-card.selected {
  border-color: var(--color-export-teal);
  background-color: rgba(0, 168, 137, 0.03);
}

/* Warning Label Option */
.warn-label {
  font-weight: 500;
  color: var(--color-warning);
}

/* Simple Checkbox Option (For nested/grid checkboxes) */
.checkbox-simple {
  display: flex;
  align-items: flex-start;
  font-size: 14px;
  color: var(--color-text-main);
  cursor: pointer;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg-card);
  transition: all var(--transition-speed) ease;
}

.checkbox-simple input {
  margin-right: 10px;
  accent-color: var(--color-export-teal);
  width: 16px;
  height: 16px;
  margin-top: 2px;
  flex-shrink: 0;
}

.checkbox-simple:hover {
  border-color: var(--color-export-teal);
  background-color: rgba(0, 168, 137, 0.01);
}

.checkbox-simple.selected {
  border-color: var(--color-export-teal);
  background-color: rgba(0, 168, 137, 0.03);
}

/* Sub-question styles */
.sub-question-wrapper {
  background-color: var(--color-bg-main);
  padding: 20px;
  border-radius: var(--border-radius);
  margin-top: 20px;
}

.sub-question-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-navy);
  margin-bottom: 12px;
}

/* Scale Rating Questions (1-5 Scale) */
.scale-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 16px 0;
  background-color: var(--color-bg-main);
  padding: 16px 20px;
  border-radius: var(--border-radius);
}

.scale-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  width: 90px;
}

.scale-label:last-of-type {
  text-align: right;
}

.scale-options {
  display: flex;
  justify-content: space-between;
  flex-grow: 1;
  max-width: 350px;
}

.scale-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
}

.scale-item input {
  opacity: 0;
  position: absolute;
}

.scale-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-card);
  border-radius: 50%;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-main);
  transition: all var(--transition-speed) ease;
}

.scale-item:hover .scale-num {
  border-color: var(--color-action-blue);
  color: var(--color-action-blue);
}

.scale-item input:checked + .scale-num {
  background-color: var(--color-export-teal);
  border-color: var(--color-export-teal);
  color: #FFFFFF;
}

/* Text Inputs and Textarea */
input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-family);
  font-size: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg-card);
  color: var(--color-text-main);
  transition: border-color var(--transition-speed) ease;
  outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus {
  border-color: var(--color-action-blue);
}

textarea {
  resize: vertical;
}

/* Branch notice warning style */
.branch-notice {
  margin-top: 16px;
  background-color: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  padding: 12px 16px;
  border-radius: var(--border-radius);
  font-size: 13.5px;
  color: #B45309;
}

/* Error Messages */
.error-msg {
  display: none;
  color: var(--color-critical);
  font-size: 13px;
  font-weight: 500;
  margin-top: 8px;
}

.question-group.has-error {
  border-left: 3px solid var(--color-critical);
  padding-left: 12px;
}

.question-group.has-error .error-msg {
  display: block;
}

/* Buttons and Navigation */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-export-teal);
  color: #FFFFFF;
}

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

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

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

.btn-large {
  padding: 16px 36px;
  font-size: 16px;
}

.form-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* Center-aligned navigation when only Next is visible */
.form-navigation:has(#btn-prev.hidden) {
  justify-content: flex-end;
}

/* Step intro layout */
.step-intro {
  margin-bottom: 28px;
}

.step-intro h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin-bottom: 8px;
}

.step-intro p {
  color: var(--color-text-muted);
  font-size: 14px;
}

/* Loading card */
.loader-container {
  padding: 40px 0;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid var(--color-border);
  border-top-color: var(--color-export-teal);
  border-radius: 50%;
  margin: 0 auto 24px;
  animation: spin 1s linear infinite;
}

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

.loader-text {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-primary-navy);
}

/* Thank you card */
.success-icon {
  width: 72px;
  height: 72px;
  background-color: rgba(0, 168, 137, 0.1);
  color: var(--color-export-teal);
  border-radius: 50%;
  font-size: 36px;
  line-height: 72px;
  margin: 0 auto 24px;
  font-weight: bold;
}

.thankyou-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.thank-msg {
  font-size: 15px;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 24px;
}

.lead-score-badge {
  background-color: var(--color-bg-main);
  padding: 10px 20px;
  border-radius: 20px;
  display: inline-block;
  font-size: 14px;
  color: var(--color-text-main);
  margin-bottom: 24px;
  border: 1px solid var(--color-border);
}

.lead-score-badge strong {
  color: var(--color-export-teal);
  font-size: 16px;
}

.pilot-status-text {
  font-size: 14.5px;
  color: var(--color-text-main);
  max-width: 600px;
  margin: 0 auto 32px;
  background-color: rgba(0, 168, 137, 0.02);
  padding: 16px;
  border-radius: var(--border-radius);
  border: 1px dashed var(--color-export-teal);
}

/* Download Box in Thank You */
.download-box {
  background-color: var(--color-bg-main);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 32px;
}

.download-box h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin-bottom: 8px;
}

.download-box p {
  font-size: 13.5px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.download-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download-link-btn {
  display: block;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--border-radius);
  transition: all var(--transition-speed) ease;
}

.download-link-btn:hover {
  border-color: var(--color-export-teal);
  background-color: rgba(0, 168, 137, 0.02);
  color: var(--color-export-teal);
}

/* Footer */
.app-footer {
  padding: 40px 20px;
  background-color: var(--color-primary-navy);
  color: #FFFFFF;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 80px;
}

.footer-container {
  max-width: 800px;
  margin: 0 auto;
}

.footer-container p {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
}

.footer-container .footer-sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
}

/* Responsive adjustments */
@media (max-width: 600px) {
  .survey-container {
    margin: 20px auto;
  }
  
  .intro-section, .survey-card {
    padding: 24px 16px;
  }
  
  h1 {
    font-size: 20px;
  }
  
  .scale-container {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .scale-options {
    max-width: none;
  }
  
  .scale-label {
    width: auto;
  }
  
  .scale-label:last-of-type {
    text-align: left;
  }
}