/* ============================================================
   TRÚC XINH – CSS Design Tokens / Variables
   ============================================================ */

:root {
  /* ── Color Palette ── */
  --color-bg:           #fef0e3;
  --color-bg-alt:       #fde8d4;
  --color-bg-dark:      #3a1a18;
  --color-accent:       #c8374a;
  --color-accent-dark:  #a02b3c;
  --color-accent-light: #e0546a;
  --color-secondary:    #713b36;
  --color-secondary-light: #8a5350;
  --color-highlight:    #ffd574;
  --color-soft:         #ffaeab;
  --color-soft-dark:    #f08080;
  --color-white:        #ffffff;
  --color-black:        #1a0a08;
  --color-text:         #2d1512;
  --color-text-muted:   #7a4a44;
  --color-text-light:   #b08070;
  --color-border:       #e8c8b8;
  --color-border-light: #f0ddd0;

  /* ── Typography ── */
  --font-serif:   'Be Vietnam Pro', system-ui, sans-serif;
  --font-sans:    'Be Vietnam Pro', system-ui, sans-serif;
  --font-display: 'Be Vietnam Pro', system-ui, sans-serif;

  /* ── Font Sizes ── */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* ── Spacing ── */
  --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;

  /* ── Border Radius ── */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   1rem;
  --radius-xl:   1.5rem;
  --radius-2xl:  2rem;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-sm:  0 1px 3px rgba(113,59,54,0.08), 0 1px 2px rgba(113,59,54,0.06);
  --shadow-md:  0 4px 12px rgba(113,59,54,0.12), 0 2px 6px rgba(113,59,54,0.08);
  --shadow-lg:  0 10px 30px rgba(113,59,54,0.15), 0 4px 12px rgba(113,59,54,0.10);
  --shadow-xl:  0 20px 50px rgba(113,59,54,0.18), 0 8px 20px rgba(113,59,54,0.12);
  --shadow-accent: 0 8px 24px rgba(200,55,74,0.30);
  --shadow-glow:   0 0 30px rgba(255,213,116,0.25);

  /* ── Transitions ── */
  --transition-fast:   150ms cubic-bezier(0.4,0,0.2,1);
  --transition-base:   250ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow:   400ms cubic-bezier(0.4,0,0.2,1);
  --transition-spring: 350ms cubic-bezier(0.34,1.56,0.64,1);

  /* ── Layout ── */
  --container-max: 1280px;
  --nav-height:    110px;
  --section-py:    var(--space-20);
}