/* ============================================================
   X1 DESIGN SYSTEM · layout.css
   PC: 左侧 Sidebar + 顶栏 Header + 中央内容
   Mobile: 顶部 Header + 内容 + 底部 5 Tab
   ============================================================ */

.x1-app { min-height: 100vh; display: flex; }

/* ============ PC Sidebar ============ */
.x1-sidebar {
  width: var(--x1-sidebar-w); height: 100vh; position: fixed; top: 0; left: 0;
  background: var(--x1-bg-1); border-right: 1px solid var(--x1-border-soft);
  display: flex; flex-direction: column; z-index: var(--x1-z-sidebar);
  transition: width var(--x1-speed-slow) var(--x1-ease);
  overflow: hidden;
}
.x1-app--collapsed .x1-sidebar { width: var(--x1-sidebar-w-collapsed); }

.x1-logo { display: flex; align-items: center; gap: 10px; height: var(--x1-header-h); padding: 0 18px; flex-shrink: 0; }
.x1-logo-mark {
  width: 32px; height: 32px; border-radius: 9px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--x1-primary), var(--x1-primary-strong));
  display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; font-size: 16px;
  box-shadow: var(--x1-glow-primary);
}
.x1-logo-text { font-size: 17px; font-weight: 700; letter-spacing: 0.02em; color: var(--x1-text-1); white-space: nowrap; }
.x1-app--collapsed .x1-logo-text { display: none; }
.x1-logo-text em { color: var(--x1-primary); font-style: normal; }

.x1-sidebar-nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 8px 10px; }

.x1-sidebar-foot { padding: 10px; border-top: 1px solid var(--x1-border-soft); flex-shrink: 0; }

.x1-collapse-btn {
  width: 100%; display: flex; align-items: center; gap: 12px; padding: 9px 14px;
  border-radius: var(--x1-radius-md); color: var(--x1-text-2); font-size: var(--x1-font-size-md);
  transition: all var(--x1-speed) var(--x1-ease); cursor: pointer;
}
.x1-collapse-btn:hover { background: var(--x1-bg-4); color: var(--x1-text-1); }
.x1-app--collapsed .x1-collapse-btn span { display: none; }

/* ---- collapsed mini icons ---- */
.x1-app--collapsed .x1-nav-item { justify-content: center; padding: 10px 0; }
.x1-app--collapsed .x1-nav-item .x1-nav-text { display: none; }
.x1-app--collapsed .x1-nav-group-label { text-align: center; padding-left: 0; padding-right: 0; font-size: 0; }
.x1-app--collapsed .x1-nav-group-label::after { content: '·'; font-size: 10px; }

/* ============ Main area ============ */
.x1-main { flex: 1; margin-left: var(--x1-sidebar-w); display: flex; flex-direction: column; min-height: 100vh; transition: margin-left var(--x1-speed-slow) var(--x1-ease); }
.x1-app--collapsed .x1-main { margin-left: var(--x1-sidebar-w-collapsed); }

/* ============ Header (top bar) ============ */
.x1-header {
  height: var(--x1-header-h); position: sticky; top: 0; z-index: var(--x1-z-header);
  display: flex; align-items: center; gap: 16px; padding: 0 24px;
  background: rgba(10, 15, 28, 0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--x1-border-soft);
}

.x1-header-search { display: flex; align-items: center; gap: 8px; height: 36px; padding: 0 12px; border-radius: var(--x1-radius-full); background: var(--x1-bg-2); border: 1px solid var(--x1-border-soft); width: 240px; transition: border-color var(--x1-speed) var(--x1-ease), width var(--x1-speed) var(--x1-ease); }
.x1-header-search:focus-within { border-color: var(--x1-primary); width: 280px; }
.x1-header-search input { flex: 1; background: none; border: none; height: 100%; font-size: var(--x1-font-size-md); }
.x1-header-search-svg { width: 16px; height: 16px; color: var(--x1-text-3); flex-shrink: 0; }

.x1-header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.x1-icon-btn { width: 38px; height: 38px; border-radius: var(--x1-radius-md); display: flex; align-items: center; justify-content: center; color: var(--x1-text-2); position: relative; transition: all var(--x1-speed) var(--x1-ease); cursor: pointer; }
.x1-icon-btn:hover { background: var(--x1-bg-4); color: var(--x1-text-1); }
.x1-icon-btn .x1-dot-notify { position: absolute; top: 8px; right: 9px; width: 7px; height: 7px; border-radius: 50%; background: var(--x1-down); }

.x1-header-market-status { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border-radius: var(--x1-radius-full); background: rgba(22,199,132,0.1); border: 1px solid rgba(22,199,132,0.3); color: var(--x1-up); font-size: var(--x1-font-size-xs); font-weight: 600; }
.x1-header-market-status .ping { width: 7px; height: 7px; border-radius: 50%; background: var(--x1-up); box-shadow: 0 0 8px var(--x1-up); animation: x1-ping 2s ease infinite; }
@keyframes x1-ping { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ============ Content ============ */
.x1-content { flex: 1; padding: 24px; max-width: var(--x1-content-max); width: 100%; margin: 0 auto; }

/* ============ Page transition ============ */
.x1-page { animation: x1-page-in var(--x1-speed-slow) var(--x1-ease-out); }
@keyframes x1-page-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ============ Mobile ============ */
.x1-mobile-only { display: none; }
.x1-desktop-only { display: flex; }

@media (max-width: 900px) {
  .x1-sidebar { display: none; }
  .x1-main { margin-left: 0; }
  .x1-desktop-only { display: none; }
  .x1-mobile-only { display: flex; }
  .x1-content { padding: 16px 14px 96px; }
  .x1-header { padding: 0 14px; gap: 10px; }
  .x1-header-search { width: 0; padding: 0; border: none; flex-shrink: 1; }
  .x1-header-search input { display: none; }
  .x1-header-market-status { display: none; }
  .x1-header-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--x1-text-1); }
  .x1-logo-mark { width: 28px; height: 28px; }

  /* 移动端底部 Tab */
  .x1-mobile-tabbar {
    position: fixed; bottom: 0; left: 0; right: 0; height: var(--x1-mobile-tabbar-h);
    background: rgba(10, 15, 28, 0.95); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--x1-border-soft); display: flex; z-index: var(--x1-z-header);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .x1-mobile-tab { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; color: var(--x1-text-3); font-size: 10px; cursor: pointer; transition: color var(--x1-speed) var(--x1-ease); }
  .x1-mobile-tab--active { color: var(--x1-primary); }
  .x1-mobile-tab .mt-ic { width: 22px; height: 22px; }
  .x1-mobile-tab--trade { position: relative; }
  .x1-mobile-tab--trade .mt-trade-btn {
    width: 52px; height: 52px; border-radius: 50%; margin-top: -28px;
    background: linear-gradient(135deg, var(--x1-primary), var(--x1-primary-strong));
    display: flex; align-items: center; justify-content: center; color: #fff;
    box-shadow: 0 6px 20px var(--x1-primary-glow); border: 4px solid var(--x1-bg-0);
  }
}

/* 平板/中等屏：侧栏半收 */
@media (min-width: 901px) and (max-width: 1180px) {
  .x1-app:not(.x1-app--collapsed) .x1-sidebar { width: 200px; }
  .x1-app:not(.x1-app--collapsed) .x1-main { margin-left: 200px; }
}