/* style.css — Modern Merlin: Invisible Magic */

/* ============================================
   FONTS
   Cormorant — display/heading (Garamont lineage)
   Work Sans — body/UI (grotesque workhorse)
   JetBrains Mono — technical/mono moments
   ============================================ */

:root {
  --font-display: 'Cormorant', 'Georgia', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

/* ============================================
   TYPE SCALE — fluid with clamp()
   ============================================ */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.9rem  + 0.5vw,  1.125rem);
  --text-lg:   clamp(1.125rem, 0.95rem + 0.85vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1rem    + 1.5vw,  2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ============================================
   SPACING — 4px base
   ============================================ */
:root {
  --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;
  --space-32: 8rem;
}

/* ============================================
   NEXUS COLOR SYSTEM — Light Mode (default)
   ============================================ */
:root, [data-theme="light"] {
  /* Surfaces (Nexus Beige) */
  --color-bg:             #f7f6f2;
  --color-surface:        #f9f8f5;
  --color-surface-2:      #fbfbf9;
  --color-surface-offset: #f3f0ec;
  --color-surface-offset-2: #edeae5;
  --color-surface-dynamic: #e6e4df;
  --color-divider:        #dcd9d5;
  --color-border:         #d4d1ca;

  /* Text (Sylph Gray) */
  --color-text:           #28251d;
  --color-text-muted:     #7a7974;
  --color-text-faint:     #bab9b4;
  --color-text-inverse:   #f9f8f4;

  /* Primary Accent (Hydra Teal) */
  --color-primary:        #01696f;
  --color-primary-hover:  #0c4e54;
  --color-primary-active: #0f3638;
  --color-primary-highlight: #cedcd8;

  /* Gold (Altana) */
  --color-gold:           #d19900;
  --color-gold-hover:     #b07a00;
  --color-gold-active:    #8a5b00;
  --color-gold-highlight: #e9e0c6;

  /* Purple (Kuja) */
  --color-purple:         #7a39bb;
  --color-purple-hover:   #5f2699;
  --color-purple-active:  #431673;
  --color-purple-highlight: #dacfde;

  /* Semantic */
  --color-warning:        #964219;
  --color-error:          #a12c7b;
  --color-success:        #437a22;
  --color-blue:           #006494;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows (tone-matched warm) */
  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.12);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* ============================================
   DARK MODE
   ============================================ */
[data-theme="dark"] {
  --color-bg:             #171614;
  --color-surface:        #1c1b19;
  --color-surface-2:      #201f1d;
  --color-surface-offset: #1d1c1a;
  --color-surface-offset-2: #22211f;
  --color-surface-dynamic: #2d2c2a;
  --color-divider:        #262523;
  --color-border:         #393836;

  --color-text:           #cdccca;
  --color-text-muted:     #797876;
  --color-text-faint:     #5a5957;
  --color-text-inverse:   #2b2a28;

  --color-primary:        #4f98a3;
  --color-primary-hover:  #227f8b;
  --color-primary-active: #1a626b;
  --color-primary-highlight: #313b3b;

  --color-gold:           #e8af34;
  --color-gold-hover:     #fdc551;
  --color-gold-active:    #feda74;
  --color-gold-highlight: #4d4332;

  --color-purple:         #a86fdf;
  --color-purple-hover:   #9250d0;
  --color-purple-active:  #7537ba;
  --color-purple-highlight: #4e4652;

  --color-warning:        #bb653b;
  --color-error:          #d163a7;
  --color-success:        #6daa45;
  --color-blue:           #5591c7;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #171614;
    --color-surface:        #1c1b19;
    --color-surface-2:      #201f1d;
    --color-surface-offset: #1d1c1a;
    --color-surface-offset-2: #22211f;
    --color-surface-dynamic: #2d2c2a;
    --color-divider:        #262523;
    --color-border:         #393836;
    --color-text:           #cdccca;
    --color-text-muted:     #797876;
    --color-text-faint:     #5a5957;
    --color-text-inverse:   #2b2a28;
    --color-primary:        #4f98a3;
    --color-primary-hover:  #227f8b;
    --color-primary-active: #1a626b;
    --color-primary-highlight: #313b3b;
    --color-gold:           #e8af34;
    --color-gold-hover:     #fdc551;
    --color-gold-active:    #feda74;
    --color-gold-highlight: #4d4332;
    --color-purple:         #a86fdf;
    --color-purple-hover:   #9250d0;
    --color-purple-active:  #7537ba;
    --color-purple-highlight: #4e4652;
    --color-warning:        #bb653b;
    --color-error:          #d163a7;
    --color-success:        #6daa45;
    --color-blue:           #5591c7;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}