*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #1A1C1C;
  --color-primary-hover: #2D2F2F;
  --color-surface: #F7F7F7;
  --color-white: #FFFFFF;
  --color-border: #E0E0E0;
  --color-border-focus: #1A1C1C;
  --color-text: #1A1C1C;
  --color-text-secondary: #5F6368;
  --color-error: #B3261E;
  --color-error-bg: #FCE4EC;
  --color-success: #2E7D32;
  --color-success-bg: #E8F5E9;
  --color-warning: #F9A825;
  --color-warning-bg: #FFF8E1;
  --color-warning-border: #FFE082;
  --color-accent: #7C3AED;
  --color-accent-light: #EDE9FE;
  --font-heading: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-soft: 0 4px 20px rgba(0,0,0,0.08);
  --max-width: 760px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-surface);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.header-brand-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.5px;
}

.header-tag {
  font-size: 0.8125rem;
  opacity: 0.7;
  font-weight: 400;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 3px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  opacity: 0.7;
}

.lang-btn:hover {
  opacity: 1;
  background: rgba(255,255,255,0.1);
}

.lang-btn.active {
  background: var(--color-white);
  color: var(--color-primary);
  opacity: 1;
  font-weight: 600;
}

/* Main */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-2xl);
}

/* Card */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.card-header {
  padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-surface) 100%);
}

.card-header h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.card-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* Form info banner */
.form-info {
  margin-bottom: var(--spacing-lg);
}

.form-info-banner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-md);
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.875rem;
}

.form-info-experience {
  font-size: 1rem;
  font-family: var(--font-heading);
}

.form-info-sep {
  color: var(--color-text-secondary);
  opacity: 0.4;
}

/* Sections */
.section {
  border: none;
  padding: var(--spacing-xl);
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
  display: block;
  width: 100%;
  color: var(--color-primary);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent-light);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

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

  .form-group-full {
    grid-column: 1 / -1;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group-label {
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  margin-bottom: var(--spacing-xs);
  display: block;
  border: none;
  padding: 0;
  color: var(--color-primary);
}

label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

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

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-light);
}

input.error,
select.error,
textarea.error {
  border-color: var(--color-error);
}

input.error:focus,
select.error:focus,
textarea.error:focus {
  box-shadow: 0 0 0 4px rgba(179, 38, 30, 0.12);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235F6368' d='M1.41.59L6 5.17 10.59.59 12 2l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

select::-ms-expand {
  display: none;
}

.phone-group {
  display: flex;
  gap: var(--spacing-sm);
  align-items: stretch;
}

.phone-group .phone-code-select {
  width: auto;
  min-width: 110px;
  flex-shrink: 0;
  padding-left: 0.5rem;
  padding-right: 28px;
  background-position: right 8px center;
}

.phone-group input[type="tel"] {
  flex: 1;
}

.field-error {
  font-size: 0.8125rem;
  color: var(--color-error);
  min-height: 0;
  opacity: 0;
  transition: opacity 0.2s;
  font-weight: 500;
}

.field-error.visible {
  opacity: 1;
}

/* Checkbox & Radio */
.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-sm) var(--spacing-lg);
  padding-top: var(--spacing-xs);
}

.checkbox-label,
.radio-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: 400;
  cursor: pointer;
  padding: var(--spacing-xs) 0;
}

.checkbox-label-strong {
  font-weight: 500;
}

.checkbox-label input[type="checkbox"],
.radio-label input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: var(--color-accent);
  flex-shrink: 0;
  cursor: pointer;
}

.radio-group {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  padding-top: var(--spacing-xs);
}

/* Risk waiver */
.risk-waiver {
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-surface) 100%);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.risk-waiver-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-border);
}

.risk-waiver-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.risk-waiver-subtitle {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.risk-waiver-intro {
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  text-align: justify;
  font-style: italic;
  color: var(--color-text);
}

.risk-waiver-clauses {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.risk-waiver-clause {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.clause-number {
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.clause-text {
  flex: 1;
  font-size: 0.9375rem;
  line-height: 1.8;
  text-align: justify;
  color: var(--color-text);
}

.risk-waiver-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 2px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-align: center;
  line-height: 1.6;
}

/* Form actions */
.form-actions {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  background: #6D28D9;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.4);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

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

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

/* Loading spinner */
.btn-loader {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* States */
.state {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  margin-top: var(--spacing-lg);
}

.state h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.state p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 480px;
  margin: 0 auto;
}

.state-error {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  margin-top: var(--spacing-lg);
}

.state-error h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.state-error p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 480px;
  margin: 0 auto var(--spacing-lg);
}

.error-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-error-bg);
  color: var(--color-error);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}

.success-icon {
  display: inline-flex;
}

.state-success h2 {
  color: var(--color-success);
}

.state-success .btn {
  margin-top: var(--spacing-lg);
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-xl);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Error summary */
.error-summary {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: 0 var(--spacing-xl) var(--spacing-md);
  font-size: 0.8125rem;
  color: var(--color-error);
}

.error-summary-hidden {
  display: none;
}

/* Section scroll margin for anchor */
.section {
  scroll-margin-top: 100px;
}

/* Helper text */
.helper-text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

/* Responsive improvements */
@media (max-width: 600px) {
  .card-header {
    padding: var(--spacing-lg);
  }
  
  .card-header h1 {
    font-size: 1.375rem;
  }
  
  .section {
    padding: var(--spacing-lg);
  }
  
  .risk-waiver {
    padding: var(--spacing-lg);
  }
  
  .checkbox-group {
    grid-template-columns: 1fr 1fr;
  }
  
  .lang-toggle {
    order: -1;
    width: 100%;
    justify-content: center;
  }
  
  .header-inner {
    flex-wrap: wrap;
  }
}