/* ============================================
   MUJ Design System - CSS Variables
   Color Palette: A案 Vivid Harmony
   ============================================ */

:root {
  /* --- Primary Colors --- */
  --color-primary: #E63946;
  --color-primary-dark: #C62D39;
  --color-primary-light: #FF5A67;
  --color-secondary: #457B9D;
  --color-secondary-dark: #356887;
  --color-secondary-light: #5A9BBD;

  /* --- Accent Colors --- */
  --color-accent-orange: #F4A261;
  --color-accent-teal: #2A9D8F;
  --color-accent-purple: #6C5CE7;

  /* --- Background --- */
  --color-bg: #FEFEFE;
  --color-bg-soft: #F8F9FA;
  --color-bg-card: #FFFFFF;

  /* --- Text --- */
  --color-text: #2B2D42;
  --color-text-light: #8D99AE;
  --color-text-white: #FFFFFF;

  /* --- Border --- */
  --color-border: #F0F0F0;
  --color-border-hover: #E0E0E0;

  /* --- Gradient --- */
  --gradient-rainbow: linear-gradient(90deg,
    var(--color-primary),
    var(--color-secondary),
    var(--color-accent-orange),
    var(--color-accent-teal),
    var(--color-accent-purple)
  );
  --gradient-hero: linear-gradient(135deg,
    rgba(230, 57, 70, 0.04),
    rgba(69, 123, 157, 0.06),
    rgba(244, 162, 97, 0.04)
  );

  /* --- Typography --- */
  --font-body: 'Zen Kaku Gothic New', 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
  --font-accent: 'Outfit', var(--font-body);

  --fs-xs: 0.75rem;     /* 12px */
  --fs-sm: 0.8125rem;   /* 13px */
  --fs-base: 0.875rem;  /* 14px */
  --fs-md: 1rem;        /* 16px */
  --fs-lg: 1.25rem;     /* 20px */
  --fs-xl: 1.5rem;      /* 24px */
  --fs-2xl: 1.75rem;    /* 28px */
  --fs-3xl: 2rem;       /* 32px */
  --fs-4xl: 3rem;       /* 48px */

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-bold: 700;
  --fw-black: 900;

  --lh-tight: 1.4;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;
  --lh-loose: 2;

  /* --- Spacing --- */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5rem;
  --space-5xl: 6rem;

  /* --- Layout --- */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-wide: 1400px;
  --header-height: 72px;
  --header-height-sp: 60px;

  /* --- Border Radius --- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* --- Shadow --- */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);

  /* --- Transition --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-normal: 0.3s var(--ease-out);
  --transition-slow: 0.5s var(--ease-out);
  --transition-reveal: 0.7s var(--ease-out);

  /* --- Z-Index --- */
  --z-header: 100;
  --z-mobile-menu: 200;
  --z-overlay: 300;
}