:root {
  --accent: #0a84ff;
  --accent-hover: #006fe6;
  --accent-light: rgba(10, 132, 255, 0.1);
  --surface: #f5f5f7;
  --surface-raised: #ffffff;
  --ink: #1d1d1f;
  --ink-secondary: #6e6e73;
  --ink-tertiary: #86868b;
  --border: rgba(0, 0, 0, 0.08);
  --border-glass: rgba(255, 255, 255, 0.3);
  --glass-bg: rgba(255, 255, 255, 0.2);
  --glass-bg-strong: rgba(255, 255, 255, 0.6);
  --sidebar-bg: rgba(255, 255, 255, 0.15);
  --sidebar-width: 300px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  --font-stack: -apple-system, system-ui, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --max-width: 840px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #1c1c1e;
    --surface-raised: #2c2c2e;
    --ink: #f5f5f7;
    --ink-secondary: #a1a1a6;
    --ink-tertiary: #6e6e73;
    --border: rgba(255, 255, 255, 0.1);
    --border-glass: rgba(255, 255, 255, 0.15);
    --glass-bg: rgba(0, 0, 0, 0.3);
    --glass-bg-strong: rgba(0, 0, 0, 0.5);
    --sidebar-bg: rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
  }
}

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

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

body {
  font-family: var(--font-stack);
  background: var(--surface);
  color: var(--ink);
  line-height: 1.5;
  min-height: 100dvh;
}

.app-shell {
  display: flex;
  min-height: 100dvh;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  flex-shrink: 0;
}

.brand div {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.brand span {
  font-size: 10px;
  font-weight: 500;
  color: var(--ink-tertiary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* ── Progress Card ── */
.progress-card {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.progress-meta span {
  font-size: 13px;
  color: var(--ink-secondary);
  font-weight: 500;
}

.progress-meta strong {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.progress-track {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
}

#progressHint {
  font-size: 12px;
  color: var(--ink-tertiary);
}

/* ── Step Nav ── */
.step-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.step-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  border: none;
  background: none;
  text-align: left;
  width: 100%;
  font-family: var(--font-stack);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-secondary);
}

.step-item:hover {
  background: rgba(10, 132, 255, 0.06);
}

.step-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.step-item.active {
  background: rgba(10, 132, 255, 0.1);
  color: var(--accent);
  font-weight: 600;
}

.step-item.completed .step-num {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  transition: all var(--transition);
}

.step-item.active .step-num {
  border-color: var(--accent);
  color: var(--accent);
}

.step-label {
  font-size: 13px;
  line-height: 1.3;
}

/* ── Sidebar Footer ── */
.sidebar-footer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.save-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #30d158;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

#saveStatus {
  font-size: 12px;
  color: var(--ink-tertiary);
}

/* ── Main Content ── */
.main-content {
  flex: 1;
  padding: var(--space-2xl) var(--space-3xl);
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.topbar {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.mobile-menu {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--ink);
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  margin-top: 2px;
}

.mobile-menu:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topbar h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.3px;
  line-height: 1.2;
  color: var(--ink);
}

.eyebrow {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-tertiary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--space-xs);
}

.top-actions {
  display: flex;
  gap: var(--space-sm);
  margin-left: auto;
  flex-shrink: 0;
}

/* ── Form ── */
form {
  display: block;
}

.form-step {
  display: none;
  animation: fadeIn 0.3s ease;
}

.form-step.active {
  display: block;
}

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

.section-heading {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.section-no {
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  opacity: 0.3;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.section-heading h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-xs);
}

.section-heading p {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.4;
}

/* ── Fields ── */
.field-grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.field-grid.two-col {
  grid-template-columns: 1fr 1fr;
}

.field-grid.three-col {
  grid-template-columns: 1fr 1fr 1fr;
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  width: 100%;
}

.field > span {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.field em {
  color: #ff3b30;
  font-style: normal;
  font-weight: 600;
}

.field input,
.field select,
.field textarea {
  font-family: var(--font-stack);
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  color: var(--ink);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
  line-height: 1.4;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--ink-tertiary);
}

.field textarea {
  resize: vertical;
  min-height: 100px;
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236e6e73' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.counter {
  font-size: 12px;
  color: var(--ink-tertiary);
  text-align: right;
  margin-top: 2px;
  font-weight: 500;
}

.honey-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

/* ── Checkbox / Radio groups ── */
.checkbox-group,
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.checkbox-label,
.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 10px 14px;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

.checkbox-label:hover,
.radio-label:hover {
  background: rgba(10, 132, 255, 0.06);
}

.checkbox-label:focus-within,
.radio-label:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.checkbox-label input,
.radio-label input {
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ── Feature Card ── */
.feature-card {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
}

.feature-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-xs);
}

.feature-card p {
  font-size: 13px;
  color: var(--ink-secondary);
  line-height: 1.4;
  margin-bottom: var(--space-md);
}

/* ── File Upload ── */
.file-upload {
  position: relative;
}

.file-upload input[type="file"] {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  top: 0;
  left: 0;
}

.file-upload-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-size: 14px;
  color: var(--ink-secondary);
}

.file-upload-label:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.file-preview {
  display: none;
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--glass-bg-strong);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--ink-secondary);
  word-break: break-all;
}

.file-preview.visible {
  display: block;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-stack);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

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

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 2px 6px rgba(10, 132, 255, 0.3);
}

.btn-secondary {
  background: var(--surface-raised);
  color: var(--ink);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: rgba(0, 0, 0, 0.03);
}

.btn-ghost {
  background: none;
  color: var(--ink-secondary);
  padding: 6px 12px;
  font-size: 13px;
}

.btn-ghost:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--ink);
}

/* ── Form Footer ── */
.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

#stepIndicator {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-tertiary);
  font-variant-numeric: tabular-nums;
}

.submit-label {
  display: inline-block;
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  font-size: 14px;
  color: var(--ink);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* ── Success Modal ── */
.success-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: var(--space-lg);
  animation: fadeIn 0.2s ease;
}

.success-modal[hidden] {
  display: none;
}

.modal-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #30d158;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin: 0 auto var(--space-lg);
}

.modal-card h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-sm);
}

.modal-card p {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-xl);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .main-content {
    padding: var(--space-xl) var(--space-lg);
  }
  .field-grid.two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100dvh;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
    box-shadow: var(--shadow-lg);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .mobile-menu {
    display: block;
  }

  .main-content {
    padding: var(--space-lg) var(--space-md);
    max-width: 100%;
  }

  .topbar {
    flex-wrap: wrap;
  }

  .topbar h1 {
    font-size: 22px;
  }

  .top-actions {
    width: 100%;
    justify-content: flex-end;
    margin-left: 0;
  }

  .section-no {
    font-size: 28px;
  }

  .section-heading h2 {
    font-size: 18px;
  }

  .field-grid.three-col {
    grid-template-columns: 1fr;
  }

  .form-footer {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--space-md);
  }

  .topbar h1 {
    font-size: 20px;
  }

  .btn {
    font-size: 13px;
    padding: 8px 16px;
  }

  .modal-card {
    padding: var(--space-lg);
  }
}

/* ── Print ── */
@media print {
  .sidebar, .top-actions, .form-footer, .mobile-menu, .toast {
    display: none !important;
  }
  .app-shell {
    display: block;
  }
  .main-content {
    max-width: 100%;
    padding: 0;
    margin: 0;
  }
  .form-step {
    display: block !important;
    page-break-after: always;
  }
  .form-step:last-child {
    page-break-after: auto;
  }
  .success-modal {
    display: none !important;
  }
}