/* ═══════════════════════════════════════════════════════════════
   PHONETHAGORAS DESIGN SYSTEM
   Theme: The Pythagorean Forge (Voix Vive Aesthetic)
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Core Palette (Voix Vive) */
  --color-bg:          hsl(220, 43%, 7%);   /* Deep Obsidian */
  --color-bg-elevated: hsl(220, 30%, 12%);
  --color-surface:     hsla(220, 20%, 15%, 0.6); /* Glassy Charcoal */
  --color-surface-2:   hsl(220, 20%, 20%);  
  --color-border:      hsl(40, 46%, 61%);   /* Muted Gold */
  --color-border-subtle: hsla(40, 46%, 61%, 0.25);

  /* Typography */
  --color-text:        hsl(240, 10%, 80%);  /* Soft Silver */
  --color-text-muted:  hsl(216, 20%, 60%);  /* Slate Grey */
  --color-text-dim:    hsla(240, 10%, 80%, 0.4);

  /* Action/Direction Palette (High-Contrast LitRPG Vibe) */
  --color-mind:        hsl(210, 100%, 60%); /* Arcane Blue */
  --color-heart:       hsl(350, 90%, 60%);  /* Vitality Red */
  --color-body:        hsl(150, 90%, 50%);  /* Stamina Green */
  --color-act:         hsl(280, 90%, 65%);  /* Willpower Purple */

  --color-accent:      hsl(40, 46%, 61%);   /* #c9a96e Muted Gold */
  --color-danger:      hsl(350, 70%, 50%);
  --color-success:     hsl(140, 40%, 50%);

  --color-own:         hsl(40, 46%, 61%);
  --color-bond:        hsl(340, 50%, 50%);
  --color-skill:       hsl(210, 50%, 50%);

  /* Gradients & Shadows */
  --gradient-glass:    linear-gradient(135deg, hsla(218, 31%, 20%, 0.4), hsla(218, 31%, 10%, 0.6));
  --gradient-accent:   linear-gradient(90deg, hsl(40, 46%, 51%), hsl(40, 46%, 71%));
  --gradient-diamond:  linear-gradient(135deg, var(--color-mind), var(--color-accent));

  /* Fonts */
  --font-sans:   'Inter', sans-serif;
  --font-header: 'Cormorant Garamond', serif;
  --font-mono:   'JetBrains Mono', monospace;

  /* Spacing & Radii */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;

  /* Shadows */
  --shadow-card:    0 8px 32px hsla(0, 0%, 0%, 0.6);
  --shadow-glow:    0 0 20px hsla(40, 46%, 61%, 0.5);

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 500ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Mobile readability: scale base font up so all rem sizes grow proportionally */
@media (max-width: 767px) {
  html { font-size: 17px; }
}
@media (max-width: 400px) {
  html { font-size: 16.5px; }
}
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  background: radial-gradient(ellipse at 50% 0%, hsl(218, 31%, 18%) 0%, var(--color-bg) 70%);
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-surface-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}