/* ====================================================================
   Faculty Achievement Portal — Design Tokens (Matching PDF 42-Screen Design)
   Deep Navy Sidebar (#0F172A) + NIET Red Primary (#CF0012)
   ==================================================================== */

:root {
  /* ─── Primary Brand Colors (NIET Red #CF0012, sampled from assets/niet-logo.png) ───
     The ramp is HSL-derived from hsl(354.8, 100%, 40.6%) so the hue stays constant.
     White text scores 5.73:1 on --primary-color, 7.73:1 on hover — both WCAG AA. */
  --primary-color: #CF0012;        /* NIET Red Primary */
  --primary-rgb: 207, 0, 18;       /* Same colour as raw channels, for rgba(var(--primary-rgb), a) */
  --primary-hover: #AA000F;        /* Darker Red — lightness x 0.82 */
  --primary-dark: #89000C;         /* Deep Red — lightness x 0.66 */
  --primary-light: rgba(var(--primary-rgb), 0.08); /* Light Red Tint */
  --primary-muted: #E3A0A6;        /* Muted Rose */
  --primary-tint: #FAE6E7;         /* Opaque 10% brand over white — active-nav fills */

  /* ─── Sidebar Brand Theme (Dark Navy #0B1120 / #0F172A) ─── */
  --sidebar-bg: #0B1120;
  --sidebar-border: #1E293B;
  --sidebar-text: #94A3B8;
  --sidebar-text-active: #FFFFFF;
  --sidebar-active-bg: var(--primary-color);

  /* ─── Secondary / Accent Colors ─── */
  --secondary-color: #F59E0B;      /* Amber / Gold */
  --secondary-hover: #D97706;
  --secondary-light: #FEF3C7;

  /* ─── Neutral Surface & Background Colors ─── */
  --bg-main: #F8FAFC;              /* Main Slate Light Background */
  --surface-card: #FFFFFF;         /* Pure White Card Surfaces */
  --surface-hover: #F1F5F9;        /* Hover Surfaces */
  --surface-secondary: #F8FAFC;    /* Secondary Table Header / Subsurfaces */
  --border-color: #E2E8F0;        /* Crisp Grey Borders */
  --border-light: #F1F5F9;        /* Extra Light Border */
  --border-focus: var(--primary-color); /* Brand Focus Ring */

  /* ─── Text & Typography Colors ─── */
  --text-primary: #0F172A;         /* Slate Dark Text */
  --text-secondary: #64748B;       /* Slate Muted Text */
  --text-tertiary: #94A3B8;        /* Disabled / Placeholder Text */
  --text-inverse: #FFFFFF;         /* White Text */
  --text-muted: #64748B;

  /* ─── Status & Indicator Colors ─── */
  --status-pending-bg: #FEF3C7;    /* Warm Amber Tint */
  --status-pending-text: #B45309;  /* Dark Amber */
  --status-pending-border: #FDE68A;
  --status-pending-dot: #F59E0B;

  --status-approved-bg: #D1FAE5;   /* Fresh Emerald Tint */
  --status-approved-text: #047857; /* Dark Emerald */
  --status-approved-border: #A7F3D0;
  --status-approved-dot: #10B981;

  --status-rejected-bg: #FEE2E2;   /* Rose Tint */
  --status-rejected-text: #B91C1C; /* Dark Crimson */
  --status-rejected-border: #FECACA;
  --status-rejected-dot: #EF4444;

  /* ─── Semantic Colors ─── */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-danger: #EF4444;
  --color-danger-light: #FEE2E2;
  --color-info: #0284C7;
  --color-info-light: #E0F2FE;

  /* ─── Typography Scale ─── */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;        /* 12px */
  --font-size-sm: 0.8125rem;      /* 13px */
  --font-size-base: 0.875rem;     /* 14px */
  --font-size-md: 0.9375rem;      /* 15px */
  --font-size-lg: 1rem;           /* 16px */
  --font-size-xl: 1.125rem;       /* 18px */
  --font-size-2xl: 1.35rem;       /* 21.6px */
  --font-size-3xl: 1.75rem;       /* 28px */

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

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

  /* ─── Elevation & Shadows ─── */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* ─── Border Radii ─── */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* ─── Layout Dimensions ─── */
  --sidebar-width: 240px;
  --header-height: 64px;
  --container-max-width: 1240px;

  /* ─── Spacing Scale ─── */
  --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;

  /* ─── Transitions ─── */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
}