/* ==========================================================================
   Registrasi Kehadiran - Swiss Grid Design System
   Art Direction: Premium Contemporary Editorial
   Color Palette:
     - Ink: #101114
     - Porcelain: #F4F1EA
     - Electric Cobalt: #3157FF
     - Signal Orange: #FF5A36
   Radius Hierarchy: 4px / 12px / 24px
   Zero External Font Dependencies (System Sans + Monospace)
   ========================================================================== */

:root {
  /* Colors */
  --color-ink: #101114;
  --color-ink-muted: #4A4D55;
  --color-ink-subtle: #737782;
  --color-porcelain: #F4F1EA;
  --color-porcelain-light: #FAF8F4;
  --color-porcelain-dark: #EAE5D9;
  --color-cobalt: #3157FF;
  --color-cobalt-hover: #1E44F0;
  --color-cobalt-subtle: rgba(49, 87, 255, 0.08);
  --color-orange: #FF5A36;
  --color-orange-subtle: rgba(255, 90, 54, 0.1);
  --color-border: #E0DAD0;
  --color-border-subtle: #ECE6DC;
  --color-border-focus: #3157FF;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F8F6F0;
  --color-error: #D92D20;
  --color-error-bg: #FEF3F2;
  --color-error-border: #FECDCA;
  --color-success: #079455;
  --color-success-bg: #ECFDF3;
  --color-success-border: #A6F4C5;

  /* Radii Hierarchy */
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Elevation / Shadows (Restrained, crisp editorial shadow) */
  --shadow-subtle: 0 1px 3px rgba(16, 17, 20, 0.04), 0 1px 2px rgba(16, 17, 20, 0.02);
  --shadow-card: 0 4px 20px -2px rgba(16, 17, 20, 0.06), 0 2px 6px -1px rgba(16, 17, 20, 0.03);
  --shadow-float: 0 12px 32px -4px rgba(16, 17, 20, 0.08);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 240ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-porcelain);
  color: var(--color-ink);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus States (Strict WCAG 2.1 compliance) */
:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* App Layout - Asymmetric Swiss Grid */
.app-layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  min-height: 100vh;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

/* Sidebar Editorial Panel */
.sidebar-editorial {
  background-color: var(--color-ink);
  color: var(--color-porcelain-light);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid rgba(244, 241, 234, 0.1);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(244, 241, 234, 0.08);
  border: 1px solid rgba(244, 241, 234, 0.15);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  margin-bottom: 24px;
}

.brand-indicator {
  width: 6px;
  height: 6px;
  background-color: var(--color-orange);
  border-radius: 50%;
  display: inline-block;
}

.brand-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-porcelain);
}

.main-title {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.main-desc {
  font-size: 0.9375rem;
  color: rgba(244, 241, 234, 0.75);
  line-height: 1.6;
}

/* Stepper Navigation */
.stepper-nav {
  margin: 40px 0;
}

.stepper-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background-color: rgba(244, 241, 234, 0.03);
  border: 1px solid rgba(244, 241, 234, 0.08);
  transition: all var(--transition-fast);
}

.step-item.active {
  background-color: rgba(49, 87, 255, 0.15);
  border-color: var(--color-cobalt);
}

.step-item.completed {
  background-color: rgba(244, 241, 234, 0.06);
  border-color: rgba(244, 241, 234, 0.2);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: rgba(244, 241, 234, 0.5);
  padding: 2px 6px;
  background-color: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
}

.step-item.active .step-num {
  color: #FFFFFF;
  background-color: var(--color-cobalt);
}

.step-item.completed .step-num {
  color: var(--color-success);
  background-color: rgba(7, 148, 85, 0.2);
}

.step-info {
  display: flex;
  flex-direction: column;
}

.step-label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #FFFFFF;
  line-height: 1.3;
}

.step-sub {
  font-size: 0.75rem;
  color: rgba(244, 241, 234, 0.6);
}

.step-divider {
  display: none;
}

/* Editorial Footer Metadata */
.editorial-footer {
  border-top: 1px solid rgba(244, 241, 234, 0.12);
  padding-top: 24px;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  margin-bottom: 8px;
}

.meta-key {
  color: rgba(244, 241, 234, 0.5);
}

.meta-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(244, 241, 234, 0.85);
}

.editorial-stamp {
  margin-top: 16px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(244, 241, 234, 0.2);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: rgba(244, 241, 234, 0.6);
  text-align: center;
}

/* Main Content Surface */
.main-content {
  padding: 48px 56px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow-y: auto;
}

.card-container {
  width: 100%;
  max-width: 720px;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 48px;
  position: relative;
}

/* Section Header */
.section-header {
  margin-bottom: 36px;
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: 24px;
}

.badge-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.step-pill {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  background-color: var(--color-porcelain-dark);
  color: var(--color-ink);
  border-radius: var(--radius-sm);
}

.pill-signal {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  background-color: var(--color-orange-subtle);
  color: var(--color-orange);
  border-radius: var(--radius-sm);
}

.pill-cobalt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  background-color: var(--color-cobalt-subtle);
  color: var(--color-cobalt);
  border-radius: var(--radius-sm);
}

.section-title {
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  line-height: 1.2;
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
  line-height: 1.5;
}

/* Form Grid */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

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

.field-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
  display: block;
}

.req-star {
  color: var(--color-orange);
  font-weight: 700;
}

.opt-tag {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-ink-subtle);
}

.label-with-badge,
.label-with-counter {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.label-with-badge .field-label,
.label-with-counter .field-label {
  margin-bottom: 0;
}

.phone-preview,
.char-counter {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-subtle);
}

.phone-preview.valid {
  color: var(--color-cobalt);
  font-weight: 600;
}

/* Field Inputs */
.field-input,
.field-textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-ink);
  background-color: var(--color-porcelain-light);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  line-height: 1.4;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field-input::placeholder,
.field-textarea::placeholder {
  color: #9A9FA8;
}

.field-input:hover,
.field-textarea:hover {
  border-color: #CAC3B5;
  background-color: #FFFFFF;
}

.field-input:focus,
.field-textarea:focus {
  outline: none;
  border-color: var(--color-cobalt);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 3px var(--color-cobalt-subtle);
}

.field-input.has-error,
.field-textarea.has-error {
  border-color: var(--color-error);
  background-color: #FFFDFD;
}

.field-input.has-error:focus,
.field-textarea.has-error:focus {
  box-shadow: 0 0 0 3px rgba(217, 45, 32, 0.12);
}

.field-textarea {
  resize: vertical;
  min-height: 84px;
}

.field-error {
  font-size: 0.75rem;
  color: var(--color-error);
  margin-top: 6px;
  min-height: 1.125rem;
  line-height: 1.3;
}

/* Attendance Radio Cards */
.attendance-fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

.attendance-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.attendance-card {
  cursor: pointer;
  display: block;
}

.card-visual {
  border: 1.5px solid var(--color-border);
  background-color: var(--color-porcelain-light);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
}

.attendance-card:hover .card-visual {
  border-color: #CAC3B5;
  background-color: #FFFFFF;
}

.dot-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--color-ink-subtle);
  background-color: transparent;
  display: inline-block;
  transition: all var(--transition-fast);
}

.card-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.card-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.2;
}

.card-desc {
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  line-height: 1.3;
}

/* Radio Checked State */
.radio-native:checked + .card-visual {
  border-color: var(--color-cobalt);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 2px var(--color-cobalt-subtle);
}

.radio-native:checked + .card-visual .dot-indicator {
  border-color: var(--color-cobalt);
  background-color: var(--color-cobalt);
}

.radio-native:focus-visible + .card-visual {
  outline: 2px solid var(--color-cobalt);
  outline-offset: 2px;
}

/* Privacy Consent Checkbox */
.consent-container {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border: 1.5px solid var(--color-border-subtle);
  background-color: var(--color-porcelain-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.consent-container:hover {
  background-color: #FFFFFF;
  border-color: var(--color-border);
}

.custom-checkbox {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border: 1.5px solid var(--color-ink-subtle);
  border-radius: var(--radius-sm);
  background-color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  transition: all var(--transition-fast);
}

.consent-native:checked + .custom-checkbox {
  background-color: var(--color-cobalt);
  border-color: var(--color-cobalt);
}

.consent-native:checked + .custom-checkbox::after {
  content: "✓";
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
}

.consent-native:focus-visible + .custom-checkbox {
  outline: 2px solid var(--color-cobalt);
  outline-offset: 2px;
}

.consent-text {
  font-size: 0.8125rem;
  color: var(--color-ink-muted);
  line-height: 1.5;
}

/* Buttons */
.form-actions,
.review-actions,
.success-actions {
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.form-actions {
  justify-content: flex-end;
}

.review-actions {
  justify-content: space-between;
}

.btn {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  line-height: 1;
  transition: all var(--transition-fast);
  border: 1.5px solid transparent;
  min-height: 48px;
}

.btn-primary {
  background-color: var(--color-cobalt);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(49, 87, 255, 0.25);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-cobalt-hover);
  box-shadow: 0 4px 12px rgba(49, 87, 255, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-porcelain-light);
  border-color: var(--color-ink-subtle);
}

.btn-arrow {
  font-size: 1.125rem;
  transition: transform var(--transition-fast);
}

.btn:hover:not(:disabled) .btn-arrow {
  transform: translateX(3px);
}

.btn-secondary:hover:not(:disabled) .btn-arrow {
  transform: translateX(-3px);
}

/* Spinner */
.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 600ms linear infinite;
  display: inline-block;
}

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

/* Review Step Styling */
.review-panel {
  border: 1.5px solid var(--color-border);
  background-color: var(--color-porcelain-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.review-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border-subtle);
  align-items: baseline;
}

.review-row:last-child {
  border-bottom: none;
}

.review-key {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-ink-subtle);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.review-val {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-ink);
  word-break: break-word;
}

.review-val.mono-val {
  font-family: var(--font-mono);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 700;
}

.status-badge.status-yes {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

.status-badge.status-maybe {
  background-color: #FFF9E6;
  color: #B54708;
  border: 1px solid #FEDF89;
}

.status-badge.status-no {
  background-color: var(--color-porcelain-dark);
  color: var(--color-ink-muted);
  border: 1px solid var(--color-border);
}

/* Banners & Error States */
.banner-container,
.review-error-banner {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.4;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.review-error-banner {
  margin-top: 20px;
  margin-bottom: 0;
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error);
}

.banner-retry-btn {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 12px;
  background: var(--color-error);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
}

/* Success State Section */
.success-card {
  display: flex;
  flex-direction: column;
}

.success-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.success-icon-badge {
  width: 44px;
  height: 44px;
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1.5px solid var(--color-success-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.success-status-pill {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-success);
  letter-spacing: 0.05em;
}

.success-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.success-desc {
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

/* Reference Box */
.ref-box {
  background-color: var(--color-ink);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 28px;
}

.ref-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.ref-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: rgba(244, 241, 234, 0.6);
  letter-spacing: 0.08em;
}

.ref-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(244, 241, 234, 0.8);
}

.ref-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(244, 241, 234, 0.15);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.ref-code {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #FFFFFF;
  word-break: break-all;
}

.btn-copy {
  background-color: var(--color-cobalt);
  color: #FFFFFF;
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.btn-copy:hover {
  background-color: var(--color-cobalt-hover);
}

.copy-icon {
  font-size: 0.875rem;
}

/* Receipt Panel */
.receipt-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-porcelain-light);
  overflow: hidden;
  margin-bottom: 28px;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .sidebar-editorial {
    position: relative;
    height: auto;
    padding: 36px 24px;
  }

  .main-content {
    padding: 32px 20px;
  }

  .card-container {
    padding: 32px 24px;
  }
}

@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .attendance-options {
    grid-template-columns: 1fr;
  }

  .review-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .ref-main {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-copy {
    justify-content: center;
  }

  .review-actions {
    flex-direction: column-reverse;
  }

  .btn {
    width: 100%;
  }
}

/* Reduced Motion Compliance */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}