/* 云盘 · 仿 123云盘官方 App 风格（蓝白浅色主题，移动优先） */
:root {
  --bg: #f3f7fd;
  --card: #ffffff;
  --primary: #1268f5;
  --primary-2: #3d8bff;
  --primary-soft: #e8f1ff;
  --danger: #e5484d;
  --danger-soft: #ffecec;
  --text: #1a2233;
  --text-1: #8a93a6;
  --line: #e9eef7;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
}

/* ---------------- 按钮 ---------------- */
button {
  font-family: inherit;
  border: none;
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  transition: filter .15s, opacity .15s;
  white-space: nowrap;
}
button:disabled { opacity: .55; cursor: default; }
button.primary { background: var(--primary); color: #fff; font-weight: 600; }
button.primary:hover { filter: brightness(1.08); }
button.danger { background: var(--danger-soft); color: var(--danger); font-weight: 600; }
button.sm { padding: 7px 14px; font-size: 13px; border-radius: 9px; }

/* ---------------- 登录页 ---------------- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: linear-gradient(160deg, #dcebff 0%, var(--bg) 45%);
}
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  border-radius: 18px;
  padding: 28px 22px;
  box-shadow: 0 10px 40px rgba(18, 104, 245, .10);
  text-align: center;
}
.brand-badge {
  width: 58px; height: 58px;
  margin: 0 auto 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 6px 16px rgba(18, 104, 245, .35);
}
.brand-badge.sm { width: 34px; height: 34px; font-size: 17px; border-radius: 10px; margin: 0 10px 0 0; box-shadow: none; }
.login-card h1 { font-size: 20px; font-weight: 700; }
.login-card .sub { font-size: 12.5px; color: var(--text-1); margin: 6px 0 18px; }
.tabs {
  display: flex;
  background: #f0f4fb;
  border-radius: 11px;
  padding: 4px;
  margin-bottom: 18px;
}
.tabs button {
  flex: 1;
  background: transparent;
  border-radius: 8px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-1);
}
.tabs button.active { background: #fff; color: var(--primary); font-weight: 600; box-shadow: 0 2px 8px rgba(18,104,245,.12); }
.hint { font-size: 12px; color: var(--text-1); line-height: 1.7; text-align: left; margin-top: 14px; }
.msg { font-size: 12.5px; color: var(--danger); min-height: 18px; margin-top: 10px; text-align: left; word-break: break-all; }
.row { margin-bottom: 14px; text-align: left; }
.row label { display: block; font-size: 12.5px; color: var(--text-1); margin-bottom: 6px; }
.row input, .row textarea {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 11px;
  padding: 11px 13px;
  font-size: 14.5px;
  font-family: inherit;
  background: #f8fafd;
  color: var(--text);
  outline: none;
}
.row input:focus, .row textarea:focus { border-color: var(--primary); background: #fff; }
.row textarea { min-height: 76px; resize: vertical; }
.row.center { text-align: center; }
.row.center a { color: var(--primary); font-size: 13px; cursor: pointer; }
.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; min-width: 0; }
.code-row button { flex-shrink: 0; }
.result { margin-top: 10px; }
.seg { display: flex; background: #f0f4fb; border-radius: 11px; padding: 4px; margin-bottom: 16px; }
.seg button { flex: 1; background: transparent; border-radius: 8px; padding: 8px 0; font-size: 13.5px; color: var(--text-1); white-space: nowrap; }
.seg button.active { background: #fff; color: var(--primary); font-weight: 600; box-shadow: 0 2px 8px rgba(18,104,245,.12); }
.acct-chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 18px; }
.acct-chips .chip {
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12.5px;
  padding: 6px 12px;
  border-radius: 999px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.acct-chips .chip.active { background: var(--primary); color: #fff; font-weight: 600; }

/* ---------------- 主框架 ---------------- */
#appShell { display: none; height: 100vh; height: 100dvh; }
#main { display: flex; flex-direction: column; height: 100%; max-width: 720px; margin: 0 auto; background: var(--bg); }

#appbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 10px;
  padding-top: env(safe-area-inset-top);
  height: calc(54px + env(safe-area-inset-top));
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  flex-shrink: 0;
}
#appbar .title { font-size: 17px; font-weight: 600; }
.iconbtn {
  background: transparent;
  color: #fff;
  font-size: 20px;
  padding: 8px 10px;
  border-radius: 10px;
}
.iconbtn:active { background: rgba(255,255,255,.18); }
.spacer { flex: 1; }

/* ---------------- 操作栏（修复按钮文字竖排：横向排列 + 禁止换行挤压） ---------------- */
.actionbar {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  flex-shrink: 0;
  scrollbar-width: none;
}
.actionbar::-webkit-scrollbar { display: none; }
.actionbar button { flex-shrink: 0; white-space: nowrap; }
.actionbar .search {
  margin-left: auto;
  width: 132px;
  min-width: 96px;
  flex-shrink: 0;
  padding: 7px 10px;
  font-size: 13px;
  border: 1.5px solid var(--line);
  border-radius: 9px;
  background: #f8fafd;
  color: var(--text);
  outline: none;
  font-family: inherit;
}
.actionbar .search:focus { border-color: var(--primary); background: #fff; }

/* ---------------- 文件列表 ---------------- */
.filelist { flex: 1; overflow-y: auto; padding: 10px 12px calc(20px + env(safe-area-inset-bottom)); -webkit-overflow-scrolling: touch; }
.item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 8px;
  box-shadow: 0 1px 4px rgba(26, 34, 51, .05);
}
.item .ico { font-size: 24px; flex-shrink: 0; line-height: 1; }
.item .meta { flex: 1; min-width: 0; }
.item .n { font-size: 14.5px; font-weight: 500; word-break: break-all; }
.item .s { font-size: 12px; color: var(--text-1); margin-top: 3px; }
.item .cb { flex-shrink: 0; width: 17px; height: 17px; accent-color: var(--primary); }
.item .dl { flex-shrink: 0; padding: 6px 14px; }
.empty { text-align: center; color: var(--text-1); font-size: 13.5px; padding: 40px 0; }

/* ---------------- 链接下载视图 ---------------- */
#linkView { padding: 16px 14px calc(24px + env(safe-area-inset-bottom)); overflow-y: auto; flex: 1; }
#linkView h2 { font-size: 16px; margin-bottom: 14px; }

/* ---------------- 抽屉 ---------------- */
#drawerMask { display: none; position: fixed; inset: 0; background: rgba(10, 20, 40, .45); z-index: 40; }
#drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 260px;
  background: var(--card);
  z-index: 41;
  transform: translateX(-102%);
  transition: transform .25s ease;
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top);
}
#drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex;
  align-items: center;
  font-size: 15.5px;
  font-weight: 600;
  color: #fff;
  padding: 18px 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
#drawer .nav {
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--text);
  cursor: pointer;
}
#drawer .nav:active { background: var(--primary-soft); }
.drawer-foot {
  margin-top: auto;
  padding: 14px 18px calc(14px + env(safe-area-inset-bottom));
  font-size: 12px;
  color: var(--text-1);
  border-top: 1px solid var(--line);
  word-break: break-all;
}

/* ---------------- Toast ---------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(48px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(8px);
  background: rgba(26, 34, 51, .88);
  color: #fff;
  font-size: 13px;
  padding: 9px 18px;
  border-radius: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  max-width: 82vw;
  z-index: 60;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: rgba(229, 72, 77, .95); }