:root {
  /* Light theme colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-secondary: #64748b;
  --color-secondary-hover: #475569;

  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #0891b2;

  --color-success-bg: rgba(22, 162, 73, 0.1);
  --color-success-border: rgba(22, 162, 73, 0.2);
  --color-warning-bg: rgba(217, 119, 6, 0.1);
  --color-warning-border: rgba(217, 119, 6, 0.2);
  --color-error-bg: rgba(220, 38, 38, 0.1);
  --color-error-border: rgba(220, 38, 38, 0.2);
  --color-info-bg: rgba(8, 145, 178, 0.1);
  --color-info-border: rgba(8, 145, 178, 0.2);

  --color-text-primary: #0f172a;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #ffffff;

  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-secondary-transparent: rgba(248, 250, 252, 0.4);
  --color-bg-muted: #f1f5f9;
  --color-bg-inverse-muted: #1e293b;
  --color-bg-overlay: rgba(15, 23, 42, 0.8);

  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-border-focus: #3b82f6;

  /* Typography */
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

  --font-size-2xs: 0.625rem;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border radius */
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;

  /* Animation */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark theme colors */
[data-theme='dark'] {
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-light: #1e3a8a;
  --color-secondary: #6b7280;
  --color-secondary-hover: #9ca3af;

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #06b6d4;

  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #0f172a;

  --color-bg-primary: #1e293b;
  --color-bg-secondary: #0f172a;
  --color-bg-secondary-transparent: rgba(15, 23, 42, 0.4);
  --color-bg-muted: #334155;
  --color-bg-inverse-muted: #0f172a;
  --color-bg-overlay: rgba(0, 0, 0, 0.8);

  --color-border: #334155;
  --color-border-hover: #475569;
  --color-border-focus: #3b82f6;

  /* Dark theme shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.4);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

/* Base styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Desktop: prevent body scroll, use viewport height */
@media (min-width: 769px) {
  body {
    overflow: hidden;
    height: 100dvh;
  }
}

/* Mobile: allow body scroll */
@media (max-width: 768px) {
  body {
    overflow-y: auto;
  }
}

/* Hide scrollbars globally */
* {
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* Internet Explorer 10+ */
}

*::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

/* Focus styles for accessibility */
:focus {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Screen reader only content */
.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;
}

/* Form styles */
.form-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.form-section h5,
.section-title {
  margin: 0 0 var(--space-3) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-4);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

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

.form-field label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.form-field input,
.form-field textarea,
.form-field select {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: border-color 0.2s ease;
  width: 100%;
  font-family: var(--font-family-sans);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-field input:disabled,
.form-field textarea:disabled,
.form-field select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

/* Button styles */
button,
.btn {
  padding: var(--space-2) var(--space-4);
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  font-family: var(--font-family-sans);
}

button:hover:not(:disabled),
.btn:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

button:disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.secondary,
.btn.secondary {
  background: var(--color-secondary);
}

button.secondary:hover:not(:disabled),
.btn.secondary:hover:not(:disabled) {
  background: var(--color-secondary-hover);
}

/* Blazor error UI */
.blazor-error-boundary {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  color: var(--color-error);
  margin: var(--space-4);
}

#blazor-error-ui {
  background: var(--color-error);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-4);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  display: none;
}

#blazor-error-ui .reload,
#blazor-error-ui .dismiss {
  color: var(--color-text-inverse);
  cursor: pointer;
  margin-left: var(--space-4);
  text-decoration: underline;
}

/* Mobile responsive */
@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* Autofill input overrides */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active,
textarea:-webkit-autofill,
textarea:-webkit-autofill:hover,
textarea:-webkit-autofill:focus,
textarea:-webkit-autofill:active,
select:-webkit-autofill,
select:-webkit-autofill:hover,
select:-webkit-autofill:focus,
select:-webkit-autofill:active {
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: var(--color-text-primary) !important;
  background-color: var(--color-bg-primary) !important;
  box-shadow: 0 0 0 1000px var(--color-bg-primary) inset !important;
  transition: background-color 5000s ease-in-out 0s !important;
}