/* ========== 基础重置 ========== */
@import url('https://cdn.jsdelivr.net/npm/remixicon@3.5.0/fonts/remixicon.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');

:where(*, *::before, *::after) {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:where(html) {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

:where(body) {
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.6;
  font-family: 
    'Noto Sans SC', 
    system-ui, 
    -apple-system, 
    'Segoe UI', 
    Roboto, 
    'Helvetica Neue', 
    sans-serif;
  color: var(--color-text-primary);
  background-color: var(--color-bg-light);
  background-image: 
    radial-gradient(at 80% 20%, var(--color-primary-100) 0px, transparent 50%),
    radial-gradient(at 0% 50%, var(--color-primary-50) 0px, transparent 50%);
}

/* ========== 排版系统 ========== */
:where(h1, h2, h3, h4, h5, h6) {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

:where(h1) { font-size: var(--text-4xl); }
:where(h2) { font-size: var(--text-3xl); }
:where(h3) { font-size: var(--text-2xl); }
:where(h4) { font-size: var(--text-xl); }
:where(p) { margin-bottom: var(--spacing-md); }

/* ========== 交互元素 ========== */
:where(a) {
  color: var(--color-primary-500);
  text-decoration: none;
  transition: color var(--transition-fast);
  cursor: pointer;
}

:where(a:hover) {
  color: var(--color-primary-600);
  text-decoration: underline;
}

:where(button) {
  border: none;
  background: none;
  font-family: inherit;
  cursor: pointer;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

:where(button:focus-visible) {
  outline: 2px solid var(--color-primary-400);
  outline-offset: 2px;
}

/* ========== 实用类 ========== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

/* ========== 动画基础 ========== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ========== 猫咪主题元素 ========== */
.cat-paw {
  position: absolute;
  width: 40px;
  height: 40px;
  background-image: url('@/assets/paw-print.png');
  background-size: contain;
  opacity: 0.15;
  pointer-events: none;
  z-index: var(--z-index-background);
}

/* ========== 响应式调整 ========== */
@media (max-width: 768px) {
  :where(h1) { font-size: var(--text-3xl); }
  :where(h2) { font-size: var(--text-2xl); }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}

/* ========== 打印样式 ========== */
@media print {
  :where(body) {
    background: none !important;
    color: black !important;
  }
  
  :where(a) {
    color: black !important;
    text-decoration: underline !important;
  }
}