/* ==========================================================
   Scenic Iceland — 设计 token
   取自 design-src/tour-styles.css，是全站唯一的设计变量来源。
   任何组件都不得硬编码色值/间距，一律引用这里的变量。
   ========================================================== */

/* ---------- 字体：本地托管 Inter 可变字重（不走 Google Fonts） ---------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('../fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  /* 拉丁扩展：冰岛语的 Þ ð æ ö、德语变音、法语连字均在此区段 */
  src: url('../fonts/inter-latin-ext-wght-normal.woff2') format('woff2-variations');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: italic;
  font-display: swap;
  font-weight: 100 900;
  src: url('../fonts/inter-latin-wght-italic.woff2') format('woff2-variations');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* ---------- 颜色 ---------- */
  --color-white: #ffffff;
  --color-paper: #f4fafd;
  --color-mist: #e8f3f8;
  --color-sky-soft: #d6eef9;
  --color-sky: #a9dff2;
  --color-border: #d4e6ee;
  --color-border-strong: #c5d4d9;
  --color-text: #0f3e54;
  --color-text-secondary: #3d5a6d;
  --color-text-muted: #6b8294;
  --color-accent: #2a7a96;
  --color-accent-bright: #4fb3d1;
  --color-accent-soft: #e8f3f8;
  --color-accent-hover: #1f5e75;
  --color-grass: #6ec04a;
  --color-grass-deep: #4d9530;
  --color-meadow: #c7e9b0;
  --color-sun: #ffb547;
  --color-rust: #b54e2e;

  --gradient-cta: linear-gradient(135deg, #6ec04a 0%, #4d9530 100%);
  --gradient-glacier: linear-gradient(135deg, #4fb3d1 0%, #2a7a96 100%);

  /* ---------- 排版 ----------
     中日文没有 Inter 字形，回退到各平台系统字体，避免方框和不一致的字重。 */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui,
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
    'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif;

  /* ---------- 尺寸 ---------- */
  --container: 1280px;
  --nav-height: 72px;
  --radius: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;
  --space-16: 8rem;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --shadow-sm: 0 2px 8px rgba(15, 62, 84, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 62, 84, 0.12);
  --shadow-lg: 0 16px 40px rgba(42, 122, 150, 0.15);
}