/* 布局样式 - Header / Main / Footer / Container */

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

/* 全局强制 hidden 属性生效
 * 修复 display: flex/inline-flex 等覆盖 [hidden] 默认 display:none 的 bug
 * 避免 error-fallback / back-to-today / drawer-overlay 等元素带 hidden 仍可见或拦截点击
 */
[hidden] {
  display: none !important;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-body);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* iOS 安全区适配 */
  padding-top: env(safe-area-inset-top);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* ===== App Container ===== */
.app-container {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  background-color: var(--color-bg);
  position: relative;
  display: flex;
  flex-direction: column;
}

/* 大屏居中显示 */
@media (min-width: 768px) {
  .app-container {
    box-shadow: 0 0 32px rgba(0,0,0,0.04);
  }
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding-top: env(safe-area-inset-top);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  min-height: 56px;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header__logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-tech) 0%, var(--color-global) 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  font-size: 18px;
  flex-shrink: 0;
}

.header__title-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.header__title {
  font-size: 16px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  line-height: 1.2;
}

.header__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-caption);
  color: var(--color-text-secondary);
}

.header__edition {
  padding: 1px 6px;
  background-color: var(--color-tech-light);
  color: var(--color-tech);
  border-radius: var(--radius-sm);
  font-size: var(--font-small);
  font-weight: var(--weight-medium);
}

/* ===== Main ===== */
.main {
  flex: 1;
  padding: 0 var(--spacing-lg);
}

/* ===== Footer ===== */
.footer {
  padding: var(--spacing-xl) var(--spacing-lg);
  padding-bottom: calc(var(--spacing-xl) + env(safe-area-inset-bottom));
  text-align: center;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--spacing-2xl);
}

.footer__copyright {
  font-size: var(--font-caption);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.footer__disclaimer {
  font-size: var(--font-small);
  color: var(--color-text-tertiary);
}