/**
 * Teaform 茶予 - Base Styles
 * Reset, base typography, and utility classes
 */

/* ============================================
     CSS RESET & NORMALIZE
  ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-cn-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-cn-serif);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-6xl); }
h2 { font-size: var(--font-size-5xl); }
h3 { font-size: var(--font-size-4xl); }
h4 { font-size: var(--font-size-3xl); }
h5 { font-size: var(--font-size-2xl); }
h6 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--spacing-4);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-secondary);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Lists */
ul, ol {
  list-style: none;
}

/* ============================================
     UTILITY CLASSES
  ============================================ */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--page-margin-md);
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--page-margin-lg);
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--page-margin-xl);
  }
}

.container-fluid {
  width: 100%;
  padding: 0 var(--page-margin-md);
}

/* Section Spacing */
.section {
  padding: var(--spacing-16) 0;
}

.section-lg {
  padding: var(--spacing-24) 0;
}

.section-xl {
  padding: var(--spacing-32) 0;
}

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Font Weights */
.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Text Colors */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-secondary); }

/* Background Colors */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-accent { background-color: var(--color-accent); }
.bg-light { background-color: var(--color-gray-50); }
.bg-white { background-color: var(--color-white); }

/* Spacing Utilities */
.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.ml-0 { margin-left: 0; }
.mr-0 { margin-right: 0; }

.p-0 { padding: 0; }

/* Letter Spacing */
.tracking-wide { letter-spacing: var(--letter-spacing-wide); }
.tracking-wider { letter-spacing: var(--letter-spacing-wider); }

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Visually Hidden (but accessible) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* ============================================
     RESPONSIVE TYPOGRAPHY
  ============================================ */

@media (max-width: 768px) {
  h1 { font-size: var(--font-size-4xl); }
  h2 { font-size: var(--font-size-3xl); }
  h3 { font-size: var(--font-size-2xl); }
  h4 { font-size: var(--font-size-xl); }
  h5 { font-size: var(--font-size-lg); }
  h6 { font-size: var(--font-size-base); }
}

/* ============================================
     PRINT STYLES
  ============================================ */

@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a, a:visited {
    text-decoration: underline;
  }

  pre, blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }

  img {
    page-break-inside: avoid;
  }

  h1, h2, h3 {
    page-break-after: avoid;
  }
}