/* CSS Variables — REIBOVA (cinematic warm mist / navy Japan travel) */

:root {
  --color-navy: #061526;
  --color-navy-mid: #0c2438;
  --color-navy-soft: #14344d;
  --color-teal: #0f6b6d;
  --color-teal-bright: #1a8a8c;
  --color-teal-soft: #5eb8b9;
  --color-mist: #eef1ec;
  --color-sand: #f5f2eb;
  --color-warm: #c4a484;

  --color-primary: var(--color-navy);
  --color-primary-hover: var(--color-navy-mid);
  --color-accent: var(--color-teal);
  --color-accent-hover: var(--color-teal-bright);
  --color-highlight: var(--color-teal-soft);

  --color-bg: #f7f5f1;
  --color-bg-alt: var(--color-mist);
  --color-bg-panel: #ebe8e1;
  --color-bg-dark: var(--color-navy);

  --color-text: #102433;
  --color-text-muted: #4d6575;
  --color-text-inverse: #ffffff;
  --color-border: #d8ddd6;
  --color-border-strong: #9db0a8;

  --font-family-base: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-family-heading: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-family-mono: "Noto Sans JP", sans-serif;

  --font-size-base: 16px;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: clamp(1.3rem, 2.2vw, 1.55rem);
  --font-size-2xl: clamp(1.55rem, 2.8vw, 2.05rem);
  --font-size-3xl: clamp(1.75rem, 3.4vw, 2.45rem);
  --font-size-hero: clamp(1.95rem, 4.8vw, 3.35rem);

  --line-height-base: 1.8;
  --line-height-tight: 1.3;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 700;
  --font-weight-bold: 700;

  --letter-eyebrow: 0.16em;
  --letter-display: 0.04em;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: clamp(3.25rem, 6vw, 4.75rem);
  --space-4xl: clamp(4.5rem, 8vw, 6.25rem);

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 2px rgba(6, 21, 38, 0.06);
  --shadow-md: 0 12px 32px rgba(6, 21, 38, 0.12);
  --shadow-lg: 0 24px 56px rgba(6, 21, 38, 0.16);
  --shadow-header: 0 8px 24px rgba(6, 21, 38, 0.08);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 450ms cubic-bezier(0.22, 1, 0.36, 1);

  --header-height: 76px;
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1160px;
  --gutter: clamp(1.05rem, 3.8vw, 1.85rem);

  --section-pad-y: clamp(3.15rem, 6.2vw, 5.25rem);
}