/* Custom Properties & Design System */
:root {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --primary: #0284c7;       /* Light Blue Accent */
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --primary-border: #bae6fd;
  
  --border-color: #e2e8f0;
  --border-focus: #38bdf8;
  
  --error-color: #dc2626;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  
  --success-color: #166534;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 25px -5px rgb(0 0 0 / 0.05), 0 8px 10px -6px rgb(0 0 0 / 0.03);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --transition: all 0.2s ease-in-out;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Container System */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container-narrow {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  text-decoration: none;
  min-width: 0;
}

.brand:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--primary-border);
  flex-shrink: 0;
}

.brand-text-wrapper {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.brand-title {
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.25;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.725rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-shrink: 0;
}

.main-nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  text-decoration: none;
}

.nav-btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  background-color: transparent;
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
}

.nav-btn-outline:hover {
  background-color: var(--primary);
  color: #ffffff;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.header-tag {
  font-size: 0.675rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--primary-light);
  color: var(--primary-hover);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  border: 1px solid var(--primary-border);
  display: inline-block;
}

/* Form Error Banner */
.form-error-banner {
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-color);
  border-radius: var(--radius-md);
  padding: 0.875rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  animation: fadeIn 0.2s ease-in-out;
}

.form-error-banner svg {
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* Mobile Menu Button & Drawer */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.375rem;
  height: 2.375rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

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

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu-drawer {
  display: none;
  background-color: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 0.875rem 0 1.125rem;
  animation: slideDown 0.2s ease-out forwards;
}

.mobile-menu-drawer.is-open {
  display: block;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
  text-decoration: none;
}

.mobile-nav-link:hover {
  background-color: var(--primary-light);
  color: var(--primary-hover);
  text-decoration: none;
}

.mobile-nav-link.highlight {
  background-color: var(--primary);
  color: #ffffff;
}

.mobile-nav-link.highlight:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
}

/* Responsive Header Tuning (Tablet & Mobile) */
@media (max-width: 767px) {
  .header-inner {
    height: 4rem;
  }

  .brand-title {
    font-size: 0.875rem;
    line-height: 1.2;
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .brand-subtitle {
    display: none;
  }

  .header-tag {
    display: none;
  }

  .brand-icon {
    width: 2.25rem;
    height: 2.25rem;
  }
}

/* Hero Section */
.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-main) 100%);
  border-bottom: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .hero {
    padding: 4.5rem 0 3.5rem;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--primary-light);
  color: var(--primary-hover);
  font-size: 0.825rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
  border: 1px solid var(--primary-border);
}

.hero-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 2.375rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
}

.hero-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 1.75rem;
  line-height: 1.65;
}

@media (min-width: 640px) {
  .hero-subtitle {
    font-size: 1.1rem;
  }
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-decoration: none;
  min-height: 44px;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-md);
  color: #ffffff;
  text-decoration: none;
}

.btn-primary:focus-visible {
  outline: 3px solid var(--primary-border);
  outline-offset: 2px;
}

/* Info Cards Section */
.info-section {
  padding: 3rem 0;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .info-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.info-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.info-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.info-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
  color: var(--text-primary);
}

.info-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Research Details Section */
.research-details {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow-sm);
}

.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.steps-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .steps-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-item {
  display: flex;
  gap: 1rem;
}

.step-number {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  background-color: var(--primary-light);
  color: var(--primary-hover);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.step-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Form Container */
.form-section {
  padding: 1rem 0 4rem;
}

.form-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-lg);
}

@media (min-width: 640px) {
  .form-card {
    padding: 3rem 2.5rem;
  }
}

.form-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}

.form-header h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Form Fields */
.form-group {
  margin-bottom: 1.75rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .form-row.two-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.925rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-label .required-star {
  color: var(--error-color);
  margin-left: 0.25rem;
}

.optional-tag {
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 0.375rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-primary);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

/* Pill / Radio Button Grid */
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .options-grid.four-col {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pill-option {
  position: relative;
}

.pill-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.pill-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1rem;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  user-select: none;
}

.pill-option input[type="radio"]:checked + .pill-label {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-hover);
  font-weight: 600;
}

.pill-option input[type="radio"]:focus-visible + .pill-label {
  outline: 2px solid var(--primary);
}

.pill-label:hover {
  border-color: var(--primary-border);
  background-color: #ffffff;
}

/* Checkbox Style */
.checkbox-container {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.checkbox-container input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.15rem;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* Error message styling */
.error-text {
  font-size: 0.825rem;
  color: var(--error-color);
  margin-top: 0.375rem;
  display: none;
}

.form-group.has-error .error-text {
  display: block;
}

.form-group.has-error .form-control {
  border-color: var(--error-color);
  background-color: var(--error-bg);
}

.form-group.has-error .pill-label {
  border-color: var(--error-border);
}

/* Submit Button & Spinner */
.submit-btn-wrapper {
  margin-top: 2rem;
}

.btn-submit {
  width: 100%;
  padding: 0.95rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.spinner {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
  margin-right: 0.5rem;
}

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

/* Success Card View */
.success-card {
  display: none;
  text-align: center;
  padding: 3rem 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.success-icon-wrapper {
  width: 4rem;
  height: 4rem;
  background-color: var(--success-bg);
  color: var(--success-color);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  border: 1px solid var(--success-border);
}

.success-card h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.success-card p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* FAQ Section */
.faq-section {
  padding: 2rem 0 4rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .faq-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.faq-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.faq-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer Styles */
.site-footer {
  margin-top: auto;
  background-color: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.privacy-notice {
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  line-height: 1.55;
}

.privacy-notice svg {
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 3rem;
  }
}

.footer-col .footer-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  text-align: center;
  font-size: 0.825rem;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    text-align: left;
  }
}

.footer-status-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Live Counter Widget */
.live-counter-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
  background-color: #ffffff;
  border: 1px solid var(--primary-border);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  margin-top: 1.75rem;
}

.live-dot {
  width: 0.625rem;
  height: 0.625rem;
  background-color: #22c55e;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse-green 1.8s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.counter-value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-hover);
  letter-spacing: -0.01em;
}

.counter-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Embedded Section Images */
.section-image-card {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  margin: 1.75rem 0 2.25rem;
}

.section-image-card img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 380px;
}

/* Share Section */
.share-section {
  padding: 2.5rem 0;
}

.share-card {
  background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 100%);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  box-shadow: var(--shadow-md);
  text-align: center;
}

@media (min-width: 640px) {
  .share-card {
    padding: 3rem 2.5rem;
  }
}

.share-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.share-desc {
  font-size: 0.975rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.share-buttons-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.875rem;
}

.btn-share {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  min-height: 44px;
}

.btn-share:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: #ffffff;
}

@media (max-width: 580px) {
  .share-buttons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.625rem;
    width: 100%;
  }

  .btn-share {
    width: 100%;
    justify-content: center;
    padding: 0.65rem 0.35rem;
    font-size: 0.8rem;
  }

  .btn-share-copy {
    grid-column: span 2;
  }
}

.btn-share-whatsapp { background-color: #25D366; }
.btn-share-whatsapp:hover { background-color: #1da851; }

.btn-share-twitter { background-color: #000000; }
.btn-share-twitter:hover { background-color: #222222; }

.btn-share-linkedin { background-color: #0A66C2; }
.btn-share-linkedin:hover { background-color: #084e96; }

.btn-share-facebook { background-color: #1877F2; }
.btn-share-facebook:hover { background-color: #115cc4; }

.btn-share-copy {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-share-copy:hover {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--primary);
}

/* Toast Notification */
.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--text-primary);
  color: #ffffff;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (max-width: 640px) {
  .toast-notification {
    left: 1rem;
    right: 1rem;
    bottom: 1.5rem;
    justify-content: center;
    text-align: center;
  }
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* Conditional Field Display */
.conditional-field {
  display: none;
}

.conditional-field.is-active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}