/* ============================================================
   LUMINA CONSULTING — Design System
   Palette: Deep Plum · Forest Green · Warm Alabaster ·
           Solar Gold · Charcoal · Soft Stone
   Type: Sora (display) + Inter (body)
   ============================================================ */

:root,
[data-theme='light'] {
  /* ---------- Brand palette ---------- */
  --lumina-plum: #2B1C3D;
  --lumina-plum-deep: #211430;
  --lumina-plum-soft: #35254A;
  --lumina-green: #0F4D3B;
  --lumina-green-hover: #0B3F30;
  --lumina-green-light: #1A6B54;
  --lumina-green-soft: rgba(15, 77, 59, 0.10);
  --lumina-gold: #C79A52;
  --lumina-gold-soft: #E8D2AA;
  --lumina-gold-ink: #8A6D2E;
  --lumina-alabaster: #F7F3EC;
  --lumina-charcoal: #252A2E;
  --lumina-stone: #DDD5C9;

  /* ---------- Semantic tokens ---------- */
  --background-primary: var(--lumina-alabaster);
  --background-dark: var(--lumina-plum);
  --background-card: #FFFCF6;
  --background-card-subtle: #EFE9DF;
  --background-section-alt: #F2EDE4;

  --text-primary: var(--lumina-charcoal);
  --text-heading: var(--lumina-plum);
  --text-on-dark: var(--lumina-alabaster);
  --text-muted: rgba(37, 42, 46, 0.68);
  --text-muted-on-dark: rgba(247, 243, 236, 0.78);
  --text-faint: rgba(37, 42, 46, 0.45);

  --accent-primary: var(--lumina-green);
  --accent-primary-hover: var(--lumina-green-hover);
  --accent-premium: var(--lumina-gold);

  --border-subtle: var(--lumina-stone);
  --border-strong: rgba(43, 28, 61, 0.22);
  --border-on-dark: rgba(247, 243, 236, 0.14);

  --cta-primary: var(--lumina-green);
  --cta-primary-hover: var(--lumina-green-hover);
  --cta-text: var(--lumina-alabaster);

  /* ---------- Compatibility aliases (legacy variable names) ---------- */
  --navy: var(--lumina-plum);
  --navy-700: var(--lumina-plum-deep);
  --navy-600: var(--lumina-plum-soft);
  --navy-300: #6B5A7A;
  --navy-100: #E8E2EC;

  --emerald: var(--lumina-green);
  --emerald-600: var(--lumina-green-hover);
  --emerald-400: var(--lumina-green-light);
  --emerald-100: #DDE9E4;

  --gold: var(--lumina-gold);
  --gold-soft: var(--lumina-gold-soft);
  --gold-ink: var(--lumina-gold-ink);
  --gold-100: #F6EFD9;

  /* ---------- Legacy surface/text tokens (mapped to semantic) ---------- */
  --color-bg: var(--background-primary);
  --color-surface: var(--background-card);
  --color-surface-2: #FFFFFF;
  --color-surface-offset: var(--background-card-subtle);
  --color-surface-offset-2: var(--background-section-alt);
  --color-divider: #E5DED3;
  --color-border: var(--border-subtle);
  --color-border-strong: var(--border-strong);

  --color-text: var(--text-primary);
  --color-text-muted: var(--text-muted);
  --color-text-faint: var(--text-faint);
  --color-text-inverse: var(--text-on-dark);
  --color-heading: var(--text-heading);

  --color-primary: var(--lumina-plum);
  --color-primary-hover: var(--lumina-plum-deep);
  --color-accent: var(--lumina-green);
  --color-accent-hover: var(--lumina-green-hover);

  /* ---------- Radii ---------- */
  --radius-sm: 0.5rem;
  --radius-md: 0.85rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-2xl: 2.25rem;
  --radius-full: 9999px;

  /* ---------- Transitions ---------- */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-interactive: 200ms var(--ease);
  --transition-smooth: 420ms var(--ease);

  /* ---------- Shadows (Plum-based) ---------- */
  --shadow-sm: 0 1px 2px rgba(43, 28, 61, 0.08);
  --shadow-md: 0 6px 24px -8px rgba(43, 28, 61, 0.14);
  --shadow-lg: 0 24px 60px -20px rgba(43, 28, 61, 0.22);
  --shadow-glow: 0 20px 50px -18px rgba(15, 77, 59, 0.28);

  /* ---------- Glass ---------- */
  --glass-bg: rgba(43, 28, 61, 0.92);
  --glass-border: rgba(247, 243, 236, 0.10);
  --glass-blur: 16px;

  /* ---------- Gradients ---------- */
  --grad-hero: linear-gradient(135deg, #2B1C3D 0%, #35254A 55%, #2B1C3D 100%);
  --grad-navy-emerald: linear-gradient(120deg, #2B1C3D 0%, #0F4D3B 100%);
  --grad-gold: linear-gradient(135deg, #E8D2AA 0%, #C79A52 100%);
  --grad-soft: linear-gradient(180deg, #FFFCF6 0%, #F7F3EC 100%);
  --grad-plum: linear-gradient(180deg, #2B1C3D 0%, #211430 100%);

  /* ---------- Layout ---------- */
  --content-narrow: 680px;
  --content-default: 1080px;
  --content-wide: 1240px;
  --content-full: 100%;
  --nav-height: 72px;

  /* ---------- Spacing scale ---------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;
  --space-11: 6rem;
  --space-12: 7rem;

  /* ---------- Fonts ---------- */
  --font-display: 'Sora', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

[data-theme='dark'] {
  /* Night Lumina — near-black plum canvas with raised surfaces */
  --lumina-plum: #2B1C3D;
  --lumina-plum-deep: #140B1E;
  --lumina-plum-soft: #241838;
  --lumina-night: #0E0815;
  --lumina-green: #2F7A4F;
  --lumina-green-hover: #1F6A46;
  --lumina-green-light: #3A8A5F;
  --lumina-gold: #D4AE6E;
  --lumina-alabaster: #F7F3EC;
  --lumina-charcoal: #D8D2DE;
  --lumina-stone: #3A3045;

  /* Semantic tokens */
  --background-primary: var(--lumina-night);
  --background-dark: var(--lumina-night);
  --background-card: var(--lumina-plum);
  --background-card-subtle: var(--lumina-plum-soft);
  --background-section-alt: var(--lumina-plum-deep);

  --text-primary: rgba(247, 243, 236, 0.84);
  --text-heading: var(--lumina-alabaster);
  --text-on-dark: var(--lumina-alabaster);
  --text-muted: rgba(247, 243, 236, 0.66);
  --text-muted-on-dark: rgba(247, 243, 236, 0.72);
  --text-faint: rgba(247, 243, 236, 0.44);

  --accent-primary: var(--lumina-green-light);
  --accent-primary-hover: var(--lumina-green);
  --accent-premium: var(--lumina-gold);

  --border-subtle: rgba(247, 243, 236, 0.12);
  --border-strong: rgba(247, 243, 236, 0.22);
  --border-on-dark: rgba(247, 243, 236, 0.12);

  --cta-primary: var(--lumina-green-hover);
  --cta-primary-hover: var(--lumina-green);
  --cta-text: var(--lumina-alabaster);

  /* Compatibility aliases */
  --navy: var(--lumina-plum);
  --navy-700: var(--lumina-plum-deep);
  --navy-600: var(--lumina-plum-soft);
  --navy-300: #8A7AA0;
  --navy-100: var(--lumina-plum-soft);

  --emerald: var(--lumina-green);
  --emerald-600: var(--lumina-green-hover);
  --emerald-400: var(--lumina-green-light);
  --emerald-100: rgba(47, 122, 79, 0.15);

  --gold: var(--lumina-gold);
  --gold-soft: #E8C88A;
  --gold-ink: var(--lumina-alabaster);
  --gold-100: rgba(212, 174, 110, 0.12);

  /* Legacy surface/text tokens */
  --color-bg: var(--background-primary);
  --color-surface: var(--background-card);
  --color-surface-2: var(--lumina-plum-soft);
  --color-surface-offset: var(--lumina-plum-soft);
  --color-surface-offset-2: var(--lumina-plum);
  --color-divider: rgba(247, 243, 236, 0.08);
  --color-border: var(--border-subtle);
  --color-border-strong: var(--border-strong);

  --color-text: var(--text-primary);
  --color-text-muted: var(--text-muted);
  --color-text-faint: var(--text-faint);
  --color-text-inverse: var(--lumina-plum);
  --color-heading: var(--text-heading);

  --color-primary: var(--lumina-green);
  --color-primary-hover: var(--lumina-green-hover);
  --color-accent: var(--lumina-green);
  --color-accent-hover: var(--lumina-green-hover);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 24px -8px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 20px 50px -18px rgba(47, 122, 79, 0.40);

  /* Glass */
  --glass-bg: rgba(14, 8, 21, 0.92);
  --glass-border: rgba(247, 243, 236, 0.10);

  /* Gradients */
  --grad-hero: linear-gradient(135deg, #0E0815 0%, #1A1028 55%, #0E0815 100%);
  --grad-soft: linear-gradient(180deg, #0E0815 0%, #140B1E 100%);
  --grad-plum: linear-gradient(180deg, #140B1E 0%, #0E0815 100%);
}

/* ============================================================
   BASE / RESET
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 1rem);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.02em;
}
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection { background: var(--lumina-green); color: #fff; }

:focus-visible {
  outline: 2.5px solid var(--lumina-green);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }

a, button, [role='button'], input, textarea, select {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.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;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   TYPE SCALE
   ============================================================ */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8rem);
  --text-sm: clamp(0.85rem, 0.82rem + 0.15vw, 0.95rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  --text-lg: clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem);
  --text-2xl: clamp(2rem, 1.4rem + 2.4vw, 3.1rem);
  --text-3xl: clamp(2.6rem, 1.6rem + 4.4vw, 4.6rem);
  --text-hero: clamp(2.8rem, 1.2rem + 6.6vw, 5.4rem);
}