/* ===== CSS VARIABLES - QUIET COMMAND CENTER ===== */
/*
 * Token contract: neutral dark surfaces use blue for interaction, orange for
 * warnings, and distinct semantic colors for status. Spacing, type, radius, motion, form, and layout tokens
 * are shared; compatibility aliases remain for existing feature styles.
 */
:root {
  /* ===== SEMANTIC COLORS ===== */
  --brand-primary: #5B8CFF;
  --brand-secondary: #7C8999;
  --primary: #5B8CFF;
  --primary-hover: #729CFF;
  --primary-subtle: rgba(91, 140, 255, 0.16);
  --primary-transparent: rgba(91, 140, 255, 0.28);
  --action: var(--primary);
  --action-hover: var(--primary-hover);
  --signal: #7EA5FF;

  --secondary: var(--brand-secondary);
  --secondary-hover: #9AA6B2;
  --secondary-subtle: rgba(154, 166, 178, 0.16);

  --success: #3DBA83;
  --success-hover: #55C894;
  --success-subtle: #163329;

  --warning: #E8B04A;
  --warning-hover: #F0BF63;
  --warning-subtle: #382D18;
  --gold: #D4AF37;

  --danger-strong: #E5525D;
  --danger: #EF6B73;
  --danger-hover: #F47F86;
  --danger-subtle: #3A2025;

  --info: var(--primary);
  --info-hover: var(--primary-hover);
  --info-subtle: #182A4B;

  /* ===== BACKGROUND COLORS ===== */
  --bg-base: #0E1117;
  --bg-ink: #121820;
  --bg-surface: #151A23;
  --bg-elevated: #1B2230;
  --bg-glass: #171E29;
  --bg-card: var(--bg-surface);

  /* ===== TEXT COLORS ===== */
  --text-primary: #E7ECF3;
  --text-secondary: #9AA6B2;
  --text-muted: #7D8A9A;
  --text-placeholder: #7D8A9A;
  --text-inverse: #0E1117;
  --text-on-action: #0E1117;

  /* ===== BORDER COLORS ===== */
  --border-subtle: #202936;
  --border-default: #273142;
  --border-focus: var(--primary);
  --border-color: #2A3546;

  /* Compatibility borders */
  --border-light: var(--border-default);
  --border-medium: var(--border-focus);

  /* ===== TYPOGRAPHY ===== */
  --font-sans: "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
  --font-display: "Bahnschrift SemiCondensed", Bahnschrift, "Segoe UI Variable", "Segoe UI", sans-serif;
  --font-mono: Consolas, "SFMono-Regular", "Liberation Mono", monospace;

  /* Fluid desktop type scale */
  --text-xs: clamp(0.72rem, 0.69rem + 0.08vw, 0.78rem);
  --text-sm: clamp(0.82rem, 0.79rem + 0.09vw, 0.9rem);
  --text-base: clamp(0.92rem, 0.89rem + 0.1vw, 1rem);
  --text-lg: clamp(1rem, 0.96rem + 0.13vw, 1.125rem);
  --text-xl: clamp(1.125rem, 1.08rem + 0.16vw, 1.25rem);
  --text-figure: clamp(1.5rem, 1.2rem + 0.75vw, 2rem);

  /* ===== SPACING SCALE (8px Base) ===== */
  --space-0: 0;
  --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;

  /* Compatibility spacing */
  --spacing-xs: var(--space-1);
  --spacing-sm: var(--space-2);
  --spacing-md: var(--space-4);
  --spacing-lg: var(--space-6);
  --spacing-xl: var(--space-8);
  --spacing-2xl: var(--space-12);

  /* ===== BORDER RADIUS ===== */
  --radius-none: 0;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-xl: 8px;
  --radius-2xl: 12px;
  --radius-full: 9999px;

  /* ===== SHADOWS ===== */
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: 0 4px 18px rgba(0, 0, 0, 0.18);
  --shadow-xl: 0 8px 28px rgba(0, 0, 0, 0.24);

  /* ===== BLUR ===== */
  --blur-sm: 0;
  --blur-md: 0;
  --blur-lg: 0;

  /* ===== ANIMATION ===== */
  --duration-instant: 80ms;
  --duration-fast: 120ms;
  --duration-normal: 180ms;
  --duration-slow: 240ms;
  --duration-slower: 320ms;

  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce: var(--ease-default);
  --ease-spring: var(--ease-default);

  /* Compatibility transitions */
  --transition-fast: var(--duration-fast) var(--ease-default);
  --transition-base: var(--duration-normal) var(--ease-default);
  --transition-slow: var(--duration-slow) var(--ease-default);

  /* ===== FORM CONTROLS ===== */
  --form-field-height: 42px;
  --form-field-padding-x: 12px;
  --form-field-padding-y: 9px;
  --form-border-width: 1px;
  --form-border-radius: var(--radius-md);
  --form-error-bg: var(--danger-subtle);
  --form-error-border: var(--danger);
  --form-error-text: var(--danger);
  --form-success-bg: var(--success-subtle);
  --form-success-border: var(--success);
  --form-success-text: var(--success);
  --form-warning-bg: var(--warning-subtle);
  --form-warning-border: var(--warning);
  --form-warning-text: var(--warning);
  --form-transition-fast: var(--transition-fast);
  --form-transition-base: var(--transition-base);
  --form-transition-slow: var(--transition-slow);

  /* ===== LAYOUT ===== */
  --sidebar-width: 216px;
  --topbar-height: 56px;
  --header-height: var(--topbar-height);
  --container-max: 1600px;

  /* Compatibility header and navigation */
  --header-bg: var(--bg-glass);
  --header-border: var(--border-default);
  --nav-text: var(--text-primary);
  --nav-text-hover: var(--primary-hover);
  --nav-active: var(--primary);
  --dropdown-bg: var(--bg-glass);
  --dropdown-shadow: var(--shadow-lg);

  /* ===== ICONS ===== */
  --icon-xs: 12px;
  --icon-sm: 16px;
  --icon-md: 20px;
  --icon-lg: 24px;
  --icon-xl: 32px;
  --icon-2xl: 48px;
}