/* =====================================================================
   布局：应用外壳、顶栏、侧栏、底栏、主区
   ===================================================================== */

.app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  height: var(--topbar-h);
  padding: 0 var(--sp-5);
  /* 刘海屏安全区 */
  padding-top: env(safe-area-inset-top, 0);
  height: calc(var(--topbar-h) + env(safe-area-inset-top, 0px));
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.5) blur(14px);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  color: var(--primary);
  transition: transform var(--dur-slow) var(--ease-spring);
}

.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.08); }

.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }

.brand-hi {
  font-family: var(--font-deva);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: .01em;
}

.brand-sub {
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-3);
  font-family: var(--font-en);
}

.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: var(--sp-2); }

/* ---------- 布局主体 ---------- */
.layout {
  flex: 1;
  display: flex;
  align-items: flex-start;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--sp-5);
  gap: var(--sp-6);
}

/* ---------- 侧栏 ---------- */
.sidebar {
  position: sticky;
  top: calc(var(--topbar-h) + var(--sp-4) + env(safe-area-inset-top, 0px));
  flex-shrink: 0;
  width: var(--sidebar-w);
  max-height: calc(100dvh - var(--topbar-h) - var(--sp-6));
  overflow-y: auto;
  padding: var(--sp-4) 0 var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.nav-group { margin-bottom: var(--sp-1); }

.nav-group-head {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-3);
  border-radius: var(--r-sm);
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-group-head .chev {
  margin-left: auto;
  transition: transform var(--dur) var(--ease-out);
  font-size: 10px;
  opacity: .6;
}

.nav-group.open .nav-group-head .chev { transform: rotate(90deg); }

.nav-items {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) var(--ease-out);
}

.nav-group.open .nav-items { grid-template-rows: 1fr; }

.nav-items > div { overflow: hidden; }

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  margin: 2px 0;
  border-radius: var(--r-sm);
  font-size: 14px;
  color: var(--text-2);
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.nav-item:hover { background: var(--surface-1); color: var(--text); transform: translateX(2px); }

.nav-item.active {
  background: var(--primary-soft);
  color: var(--primary-ink);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 3px; height: 18px;
  margin-top: -9px;
  border-radius: var(--r-pill);
  background: var(--primary);
}

.nav-icon {
  width: 22px;
  text-align: center;
  font-size: 15px;
  flex-shrink: 0;
}

.nav-icon.deva { font-size: 16px; line-height: 1; }

.nav-badge {
  margin-left: auto;
  min-width: 20px;
  padding: 0 6px;
  border-radius: var(--r-pill);
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  font-family: var(--font-en);
}

:root[data-theme='dark'] .nav-badge { color: #1A1A1A; }

/* ---------- 今日面板 ---------- */
.today-panel {
  margin-top: var(--sp-4);
  padding: var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
}

.today-title {
  font-family: var(--font-zh);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: var(--sp-3);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.today-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line), transparent);
}

.today-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--sp-2) var(--sp-2);
  border-radius: var(--r-sm);
  font-size: 13px;
  color: var(--text-2);
  transition: background var(--dur-fast) var(--ease-out);
}

.today-row:hover { background: var(--surface-1); }

.t-num {
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
}

.t-num.zero { color: var(--text-3); font-weight: 400; }

/* ---------- 主区 ---------- */
.main-content {
  flex: 1;
  min-width: 0;
  padding: var(--sp-6) 0 var(--sp-8);
}

.view { animation: viewIn var(--dur) var(--ease-out) both; }

.section-head { margin-bottom: var(--sp-5); }

.section-title {
  font-family: var(--font-zh);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.section-title .sub {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* 标题下的装饰线 */
.section-head::after {
  content: '';
  display: block;
  width: 46px;
  height: 2px;
  margin-top: var(--sp-3);
  background: linear-gradient(to right, var(--primary), transparent);
  border-radius: var(--r-pill);
}

/* ---------- 底栏（移动端） ---------- */
.bottom-nav {
  display: none;
  position: sticky;
  bottom: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.5) blur(16px);
  -webkit-backdrop-filter: saturate(1.5) blur(16px);
  border-top: 1px solid var(--line-soft);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.bn-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  max-width: 560px;
  margin: 0 auto;
}

.bn-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: var(--sp-2) var(--sp-1);
  font-size: 10.5px;
  color: var(--text-3);
  transition: color var(--dur-fast) var(--ease-out);
  position: relative;
}

.bn-item.active { color: var(--primary); }

.bn-item.active::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  width: 26px; height: 2.5px;
  margin-left: -13px;
  border-radius: var(--r-pill);
  background: var(--primary);
}

.bn-icon { font-size: 19px; line-height: 1; }
.bn-icon.deva { font-size: 18px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .sidebar { width: 76px; }
  .sidebar .nav-label,
  .sidebar .nav-group-head span:not(.chev),
  .sidebar .today-panel { display: none; }
  .nav-group-head { justify-content: center; }
  .nav-group-head .chev { display: none; }
  .nav-item { justify-content: center; padding: var(--sp-2); }
  .nav-item.active::before { display: none; }
  .nav-badge {
    position: absolute;
    top: 2px; right: 8px;
    margin: 0;
    min-width: 16px;
    padding: 0 4px;
    font-size: 9.5px;
  }
}

@media (max-width: 767px) {
  :root { --topbar-h: 56px; }
  .sidebar { display: none; }
  .layout { padding: 0 var(--sp-4); gap: 0; }
  .main-content { padding: var(--sp-4) 0 var(--sp-6); }
  .bottom-nav { display: block; }
  .section-title { font-size: 22px; }
  .brand-sub { display: none; }
}

@media (max-width: 420px) {
  .layout { padding: 0 var(--sp-3); }
}