//* 文件路径：my-website/assets/css/global.css */
/* 全局样式：重置、变量、通用字体与按钮 */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #3eaf7c;
  --color-bg: #ffffff;
  --color-bg-dark: #000000;
  --color-text: #1a1a1a;
  --color-text-light: #6a8bad;
  --color-border: #eaecef;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  --shadow-btn: 0 6px 24px rgba(0, 0, 0, 0.08);
  --shadow-btn-hover: 0 12px 32px rgba(0, 0, 0, 0.15);
}

html, body {
  width: 100%;
  height: 100%;
  font-family: var(--font-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--color-bg-dark);
  color: var(--color-text);
  transition: background 0.6s ease;
}

body.white-bg {
  background: var(--color-bg);
}

/* 通用按钮 */
.btn {
  display: inline-block;
  padding: 0.9rem 2.4rem;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  box-shadow: var(--shadow-btn);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s, border-color 0.25s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-btn-hover);
  background: #f8f9fa;
  border-color: var(--color-primary);
}

.btn:active {
  transform: translateY(-1px) scale(0.99);
}