/* ==========================================================================
   Mizzle — 重置 / 外壳布局（侧边栏 + 顶栏 + 内容区）
   ========================================================================== */

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

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--f-ui);
  color: var(--ink);
  background-color: var(--bg-base);
  background-image: var(--bg-image);
  background-attachment: fixed;
  background-size: cover;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

::selection {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
}

/* 滚动条 */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
*::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}
*::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 99px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-track {
  background: transparent;
}

/* ── 应用外壳 ──────────────────────────────────────────────────────── */
#app {
  height: 100vh;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  height: 100vh;
  padding: 14px;
  gap: 14px;
}

/* ── 侧边栏 ────────────────────────────────────────────────────────── */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
  padding: 18px 14px 14px;
  border-radius: var(--r-xl);
  background: rgba(var(--panel-rgb), var(--glass-opacity));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.35);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.35);
  position: relative;
  overflow: hidden;
}

.sidebar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22), transparent 32%);
  pointer-events: none;
}

.brand {
  padding: 2px 6px 12px;
  display: block;
  position: relative;
  z-index: 1;
}

.brand-logo {
  font-family: var(--f-logo);
  font-size: 40px;
  line-height: 1;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-shadow: 0 2px 12px rgba(239, 138, 76, 0.18);
}

.brand-sub {
  margin-top: 2px;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--ink-2);
  font-weight: 500;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  z-index: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--r-md);
  color: var(--ink-2);
  font-size: 15.5px;
  font-weight: 500;
  letter-spacing: 1px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
  position: relative;
}

.nav-item svg {
  width: 19px;
  height: 19px;
  flex: none;
  opacity: 0.85;
}

.nav-item:hover {
  background: rgba(var(--panel-rgb), 0.55);
  color: var(--ink);
}

.nav-item.active {
  background: color-mix(in srgb, var(--accent) 16%, rgba(var(--panel-rgb), 0.6));
  color: color-mix(in srgb, var(--accent) 62%, var(--ink));
  font-weight: 650;
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  border-radius: 9px;
  background: var(--accent);
}

.side-nav-group {
  padding: 8px 6px 4px;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.side-gap {
  flex: 1;
  min-height: 8px;
}

.theme-pill {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
  font-size: 15px;
  letter-spacing: 3px;
  font-weight: 500;
  transition: all var(--dur) var(--ease);
}

.theme-pill:hover {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}

.side-user {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px;
  border-radius: var(--r-md);
  transition: background var(--dur) var(--ease);
  cursor: pointer;
}

.side-user:hover {
  background: rgba(var(--panel-rgb), 0.5);
}

.side-user .meta {
  min-width: 0;
  flex: 1;
}

.side-user .name {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.side-user .uid {
  font-size: 12px;
  color: var(--ink-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--f-ui);
}

/* ── 主区域 ────────────────────────────────────────────────────────── */
.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.topbar {
  position: relative;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--r-lg);
  background: rgba(var(--panel-rgb), calc(var(--glass-opacity) * 0.92));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.3);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.3);
  flex: none;
  min-height: var(--topbar-h);
}

.topbar .grow {
  flex: 1;
}

.topbar-stats {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13.5px;
  color: var(--ink-2);
  white-space: nowrap;
}

.topbar-stats b {
  color: var(--ink);
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.view {
  flex: 1;
  min-height: 0;
  overflow: auto;
  border-radius: var(--r-xl);
  background: rgba(var(--panel-rgb), calc(var(--glass-opacity) * 0.72));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.3);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.3);
  padding: 22px 24px 30px;
  position: relative;
}

.view.flush {
  padding: 0;
  overflow: hidden;
}

.page-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.page-title {
  font-size: 21px;
  font-weight: 680;
  letter-spacing: 1px;
}

.page-desc {
  font-size: 13px;
  color: var(--ink-3);
}

/* ── 无外壳页面（登录页 / 阅读页） ─────────────────────────────────── */
#app.bare {
  overflow: hidden;
}

/* ── 响应式 ────────────────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 84px minmax(0, 1fr);
    padding: 10px;
    gap: 10px;
  }
  .sidebar {
    padding: 14px 10px 12px;
    align-items: center;
  }
  .brand-logo {
    font-size: 24px;
  }
  .brand-sub,
  .nav-item span,
  .side-user .meta,
  .theme-pill span {
    display: none;
  }
  .nav-item {
    justify-content: center;
    padding: 13px;
  }
  .theme-pill {
    padding: 13px;
  }
  .side-user {
    justify-content: center;
  }
}

@media (max-width: 720px) {
  body {
    overflow: auto;
  }
  #app {
    height: auto;
    min-height: 100vh;
  }
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
    height: auto;
    min-height: 100vh;
    padding: 8px;
    gap: 8px;
  }
  .sidebar {
    flex-direction: row;
    align-items: center;
    gap: 4px;
    padding: 8px 10px;
    border-radius: 18px;
    overflow-x: auto;
    overflow-y: hidden;
  }
  .brand {
    padding: 0 6px 0 0;
  }
  .brand-logo {
    font-size: 22px;
  }
  .brand-sub {
    display: none;
  }
  .side-nav {
    flex-direction: row;
    gap: 2px;
  }
  .nav-item {
    padding: 9px;
  }
  .nav-item span {
    display: none;
  }
  .nav-item.active::before {
    display: none;
  }
  .side-gap,
  .side-nav-group {
    display: none;
  }
  .theme-pill {
    margin-left: auto;
    padding: 9px;
  }
  .theme-pill span {
    display: none;
  }
  .side-user {
    padding: 3px;
  }
  .side-user .meta,
  .side-user [data-logout] {
    display: none;
  }
  .main {
    min-height: 0;
  }
  .topbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 12px;
    min-height: 0;
  }
  .topbar .search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
  }
  .topbar-stats {
    margin-left: auto;
    gap: 10px;
    font-size: 12px;
  }
  .view {
    padding: 14px;
    border-radius: 20px;
  }
  .modal-backdrop {
    padding: 12px;
    align-items: flex-end;
  }
  .modal {
    width: 100%;
    max-height: 88vh;
  }
}