:root {
  /* Palette: VerumSoft Neoclassical Tech (light) */
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-panel: #ffffff;
  --color-border: #e2e8f0;
  --color-muted: #4a5568;
  --color-text: #1a1a1a;
  --color-text-strong: #0f1720;

  --color-primary: #002147;
  --color-primary-strong: #001a37;
  --color-primary-weak: rgba(0, 33, 71, 0.08);
  --color-secondary: #007ba7;
  --color-secondary-strong: #00688d;
  --color-secondary-weak: rgba(0, 123, 167, 0.12);
  --color-accent: #c5a059;
  --color-accent-strong: var(--color-secondary-strong);
  --color-danger: var(--color-error);

  --color-success: #007ba7;
  --color-success-weak: rgba(0, 123, 167, 0.12);
  --color-warning: #c5a059;
  --color-warning-weak: rgba(197, 160, 89, 0.14);
  --color-error: #b45555;
  --color-error-weak: rgba(180, 85, 85, 0.14);
  --color-focus: rgba(0, 123, 167, 0.35);
  --color-on-primary: #ffffff;
  --color-surface-muted: rgba(0, 33, 71, 0.04);
  --color-nav-text: #e6edf2;
  --color-nav-text-strong: #f4f7fb;
  --banner-info-bg: rgba(0, 123, 167, 0.12);
  --banner-info-border: rgba(0, 123, 167, 0.35);
  --banner-info-text: #083244;
  --banner-warning-bg: rgba(197, 160, 89, 0.18);
  --banner-warning-border: rgba(197, 160, 89, 0.45);
  --banner-warning-text: #4a3a12;
  --banner-success-bg: rgba(0, 123, 167, 0.12);
  --banner-success-border: rgba(0, 123, 167, 0.35);
  --banner-success-text: #083244;
  --banner-error-bg: rgba(180, 85, 85, 0.14);
  --banner-error-border: rgba(180, 85, 85, 0.4);
  --banner-error-text: #351616;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-heading: "Merriweather", "Playfair Display", "Times New Roman", serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-sm: 14px;
  --font-md: 16px;
  --font-lg: 19px;
  --font-xl: 24px;
  --font-2xl: 30px;
  --font-3xl: 36px;
  --font-4xl: 44px;
  --font-hero: 54px;
  --lh-tight: 1.2;
  --lh-body: 1.65;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-black: 900;

  /* Spacing & shape */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;

  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 4px;
  --radius-xl: 4px;

  --shadow-sm: 0 2px 6px rgba(15, 23, 32, 0.08);
  --shadow-md: 0 6px 18px rgba(15, 23, 32, 0.12);
  --glow-mint: 0 0 0 1px rgba(0, 123, 167, 0.2), 0 4px 12px rgba(0, 123, 167, 0.18);
  --glow-cobalt: 0 0 0 1px rgba(0, 123, 167, 0.2), 0 5px 16px rgba(0, 123, 167, 0.18);

  /* Overlays & modals */
  --overlay-bg: rgba(18, 24, 34, 0.55);
  --overlay-blur: 2px;
  --overlay-strong: rgba(7, 10, 15, 0.6);
  --modal-shadow: 0 14px 36px rgba(11, 20, 36, 0.2);
  --modal-shadow-soft: 0 20px 60px rgba(11, 20, 36, 0.18);
  --modal-shadow-strong: 0 24px 64px rgba(0, 0, 0, 0.25);
  --modal-border-warning: rgba(251, 191, 36, 0.35);
  --modal-border-danger: rgba(248, 113, 113, 0.45);
  --modal-shadow-danger: 0 20px 60px rgba(239, 68, 68, 0.2);
  --header-bg: #002147;
  --header-border: rgba(255, 255, 255, 0.12);

  --z-popover: 80;
  --z-modal: 90;
  --z-tooltip: 100;
}

/* Dark theme overrides */
.dark {
  --color-bg: #111827;
  --color-surface: #0f172a;
  --color-panel: #0f172a;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-muted: #a0aec0;
  --color-text: #e2e8f0;
  --color-text-strong: #f8fafc;

  --color-primary: #0b2f5b;
  --color-primary-strong: #092649;
  --color-primary-weak: rgba(11, 47, 91, 0.3);
  --color-secondary: #0e7490;
  --color-secondary-strong: #0b5f75;
  --color-secondary-weak: rgba(14, 116, 144, 0.3);
  --color-accent-strong: var(--color-secondary-strong);
  --color-danger: var(--color-error);

  --color-success: #0e7490;
  --color-success-weak: rgba(14, 116, 144, 0.3);
  --color-warning: #c5a059;
  --color-warning-weak: rgba(197, 160, 89, 0.2);
  --color-error: #b45555;
  --color-error-weak: rgba(180, 85, 85, 0.24);
  --color-focus: rgba(14, 116, 144, 0.45);
  --color-on-primary: #f8fafc;
  --color-surface-muted: rgba(11, 47, 91, 0.2);
  --color-nav-text: #e2e8f0;
  --color-nav-text-strong: #f8fafc;
  --banner-info-bg: rgba(14, 116, 144, 0.22);
  --banner-info-border: rgba(14, 116, 144, 0.4);
  --banner-info-text: #dbeafe;
  --banner-warning-bg: rgba(197, 160, 89, 0.2);
  --banner-warning-border: rgba(197, 160, 89, 0.5);
  --banner-warning-text: #fef3c7;
  --banner-success-bg: rgba(14, 116, 144, 0.2);
  --banner-success-border: rgba(14, 116, 144, 0.4);
  --banner-success-text: #e0f2fe;
  --banner-error-bg: rgba(180, 85, 85, 0.24);
  --banner-error-border: rgba(180, 85, 85, 0.5);
  --banner-error-text: #fee2e2;

  --shadow-sm: 0 6px 16px rgba(4, 8, 18, 0.45);
  --shadow-md: 0 16px 40px rgba(4, 8, 18, 0.56);
  --glow-mint: 0 0 0 1px rgba(14, 116, 144, 0.36), 0 10px 24px rgba(14, 116, 144, 0.24);
  --glow-cobalt: 0 0 0 1px rgba(14, 116, 144, 0.36), 0 12px 28px rgba(14, 116, 144, 0.24);

  --overlay-bg: rgba(12, 16, 24, 0.74);
  --overlay-blur: 3px;
  --overlay-strong: rgba(9, 14, 24, 0.78);
  --modal-shadow: 0 18px 48px rgba(4, 8, 18, 0.6);
  --modal-shadow-soft: 0 20px 60px rgba(4, 8, 18, 0.5);
  --modal-shadow-strong: 0 24px 64px rgba(4, 8, 18, 0.62);
  --modal-border-warning: rgba(197, 160, 89, 0.5);
  --modal-border-danger: rgba(224, 107, 107, 0.55);
  --modal-shadow-danger: 0 32px 90px rgba(224, 107, 107, 0.3);
  --header-bg: #0b2f5b;
  --header-border: rgba(255, 255, 255, 0.15);
}

.ui-body {
  background:
    linear-gradient(180deg, rgba(0, 33, 71, 0.04), transparent 220px),
    var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  line-height: var(--lh-body);
}

.ui-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-6);
}

.ui-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  padding: var(--space-4) var(--space-6);
  backdrop-filter: blur(10px);
}

.ui-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text-strong);
}

.ui-link {
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.ui-panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.ui-panel h2 {
  font-size: var(--font-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-strong);
  margin-bottom: var(--space-2);
}

.ui-subtle {
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.ui-stepper {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.ui-step {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  text-align: center;
  font-size: var(--font-sm);
  color: var(--color-muted);
  background: var(--color-surface-muted);
}

.ui-step.is-active {
  color: var(--color-text-strong);
  border-color: var(--color-primary);
  box-shadow: var(--glow-mint);
  background: linear-gradient(120deg, var(--color-primary-weak), var(--color-secondary-weak));
}

.ui-step small {
  display: block;
  color: var(--color-muted);
  margin-top: 2px;
}

.ui-btn {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: var(--font-md);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
  background: var(--color-surface);
  color: var(--color-primary-strong);
}

.ui-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary);
}

.ui-btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: 1px solid var(--color-primary);
  min-height: 44px;
}

.ui-btn-primary:hover {
  box-shadow: var(--shadow-sm);
}

.ui-btn-group .ui-btn {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: 1px solid var(--color-primary);
  box-shadow: none;
}

.ui-btn-group .ui-btn:hover {
  box-shadow: var(--shadow-sm);
}

.ui-dropzone {
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  color: var(--color-muted);
  background: var(--color-surface-muted);
  transition: border-color 120ms ease, background 120ms ease;
}

.ui-dropzone:hover {
  border-color: var(--color-primary);
  background: linear-gradient(120deg, var(--color-primary-weak), var(--color-secondary-weak));
}

.ui-card-muted {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.ui-input {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-md);
}

.ui-input:focus {
  outline: 1.5px solid var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-weak);
}

.ui-check {
  width: 14px;
  height: 14px;
  accent-color: var(--color-primary);
}

.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: var(--font-sm);
  font-weight: var(--weight-medium);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
}

.ui-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--color-primary);
}

.ui-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: var(--font-sm);
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-muted);
}

.ui-chip.red {
  border-color: var(--color-error);
  color: var(--color-error);
  background: var(--color-error-weak);
}

.ui-chip.green {
  border-color: var(--color-success);
  color: var(--color-success);
  background: var(--color-success-weak);
}
.ui-chip.verified {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: var(--color-secondary-weak);
}
.ui-chip.gray { border-color: var(--color-border); color: var(--color-muted); }

.ui-shadow {
  box-shadow: var(--shadow-md);
}

.ui-grid-2 {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}