:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --panel-2: #fafbfd;
  --border: #e2e6ee;
  --text: #1b2230;
  --muted: #6b7688;
  --primary: #1868db;
  --primary-dark: #1454b4;
  --primary-soft: #e8f0fd;
  --ok: #16a34a;
  --ok-soft: #e7f7ec;
  --warn: #d97706;
  --warn-soft: #fdf3e3;
  --err: #dc2626;
  --err-soft: #fdeaea;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .06);
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161d;
    --panel: #1a2029;
    --panel-2: #202836;
    --border: #2c3542;
    --text: #e8edf5;
    --muted: #98a3b4;
    --primary: #4d94f5;
    --primary-dark: #6aa6f8;
    --primary-soft: #1d2c42;
    --ok: #4ade80;
    --ok-soft: #162c1f;
    --warn: #fbbf24;
    --warn-soft: #322615;
    --err: #f87171;
    --err-soft: #331c1c;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
        "PingFang SC", "Hiragino Sans GB", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); }

/* ---------------- 登录 / 初始化 ---------------- */

.center-stage {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 32px 28px;
}

.auth-card h1 {
  font-size: 19px;
  margin: 0 0 4px;
  letter-spacing: .2px;
}

.auth-card .sub {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 22px;
}

.brand-mark {
  width: 44px; height: 44px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--primary), #3f8ff0);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px;
  margin-bottom: 16px;
}

/* ---------------- 主框架 ---------------- */

.topbar {
  height: 56px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 14px;
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 15px; letter-spacing: .3px;
}

.brand .dot {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #3f8ff0);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 13px;
}

.topbar .spacer { flex: 1; }

.env-pill {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--muted);
}

.env-pill.live { color: var(--ok); border-color: var(--ok); background: var(--ok-soft); }
.env-pill.mock { color: var(--warn); border-color: var(--warn); background: var(--warn-soft); }

.user-chip { color: var(--muted); font-size: 13px; }

.layout { display: flex; align-items: flex-start; }

.sidebar {
  width: 190px;
  padding: 18px 12px;
  position: sticky;
  top: 56px;
  align-self: flex-start;
}

.sidebar button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 13px;
  margin-bottom: 4px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.sidebar button:hover { background: var(--panel); }

.sidebar button.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

.content {
  flex: 1;
  padding: 18px 22px 60px 8px;
  min-width: 0;
}

.page { display: none; }
.page.active { display: block; }

/* ---------------- 卡片 / 表单 ---------------- */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.card h2 {
  font-size: 15px;
  margin: 0 0 16px;
  display: flex; align-items: center; gap: 8px;
}

.card h2 .hint { font-weight: 400; color: var(--muted); font-size: 12px; }

.grid { display: grid; gap: 14px; }
.grid.c2 { grid-template-columns: 1fr 1fr; }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 980px) {
  .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; }
  .sidebar { width: 100%; }
  .layout { flex-direction: column; }
  .content { padding: 12px 16px 60px; }
  .sidebar { position: static; display: flex; gap: 6px; overflow-x: auto; padding: 10px 16px 0; }
  .sidebar button { width: auto; white-space: nowrap; margin: 0; }
}

label.field { display: block; }

label.field > span {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 5px;
}

input[type=text], input[type=password], input[type=number], input[type=date],
select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

textarea { resize: vertical; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

button.btn {
  padding: 9px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

button.btn:hover { border-color: var(--primary); color: var(--primary); }

button.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}

button.btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }

button.btn.danger:hover { border-color: var(--err); color: var(--err); }

button.btn:disabled { opacity: .5; cursor: not-allowed; }

button.btn.sm { padding: 5px 12px; font-size: 12.5px; }

/* ---------------- 收件人工具栏（导入 / 下载模板 / 清空） ---------------- */

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding: 11px 13px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--panel-2);
}

.toolbar .grow { flex: 1 1 auto; }

.toolbar .tip {
  font-size: 12.5px;
  color: var(--muted);
}

button.btn.tool {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: none;
  padding: 8px 15px;
  font-size: 13.5px;
  font-weight: 500;
  background: var(--panel);
  box-shadow: 0 1px 1px rgba(16, 24, 40, .04);
  transition: border-color .15s, color .15s, background .15s,
              box-shadow .15s, transform .08s;
}

button.btn.tool > svg {
  width: 15px;
  height: 15px;
  flex: none;
  fill: none;
  stroke: currentColor;
}

button.btn.tool:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
  box-shadow: 0 2px 8px rgba(24, 104, 219, .14);
}

button.btn.tool:active { transform: translateY(1px); }

button.btn.tool.soft {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 600;
}

button.btn.tool.soft:hover {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(24, 104, 219, .28);
}

button.btn.tool.danger:hover {
  border-color: var(--err);
  color: var(--err);
  background: var(--err-soft);
  box-shadow: 0 2px 8px rgba(220, 38, 38, .14);
}

@media (max-width: 640px) {
  .toolbar .grow { flex: none; }
  button.btn.tool { flex: 1 1 auto; justify-content: center; }
}

.seg {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel-2);
}

.seg button {
  padding: 8px 18px;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.seg button.active { background: var(--primary); color: #fff; font-weight: 600; }

/* ---------------- 状态 / 提示 ---------------- */

/* 固定 5 个一行：第一排=发送统计（今日/已送达/失败/待确认/累计提交），
   第二排=套餐余量、账户余额。只有很窄的窗口才收窄列数。 */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }

@media (max-width: 780px) { .stats { grid-template-columns: repeat(2, 1fr); } }

.stat {
  min-width: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.stat .k { font-size: 12px; color: var(--muted); }
.stat .v { font-size: 23px; font-weight: 700; margin-top: 4px; }
.stat .v.ok { color: var(--ok); }
.stat .v.err { color: var(--err); }
.stat .v.warn { color: var(--warn); }
.stat .sub { font-size: 11.5px; color: var(--muted); margin-top: 3px; }

/* ---------------- 套餐包 ---------------- */

.packs-head {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 14px 17px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-2);
}

.packs-head .grow { flex: 1 1 auto; }

.packs-avail { font-size: 30px; font-weight: 700; line-height: 1.15; letter-spacing: -.5px; }
.packs-avail b.ok { color: var(--ok); }
.packs-avail b.warn { color: var(--warn); }
.packs-avail b.err { color: var(--err); }
.packs-avail .unit { font-size: 14px; font-weight: 500; color: var(--muted); margin-left: 3px; }

.packs-meta { font-size: 12.5px; color: var(--muted); max-width: 420px; }

.add-pack {
  margin-top: 14px;
  padding: 16px 16px 12px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--panel-2);
}

.add-pack .toolbar {
  margin-top: 2px;
  padding: 0;
  border: 0;
  background: transparent;
}

.pack {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius);
  background: var(--panel);
  margin-bottom: 10px;
  transition: box-shadow .15s;
}

.pack:hover { box-shadow: var(--shadow); }
.pack:last-child { margin-bottom: 0; }

.pack.finished { border-left-color: var(--border); opacity: .68; }
.pack.expired { border-left-color: var(--err); opacity: .68; }

.pack-main { flex: 1 1 auto; min-width: 0; }

.pack-name {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pack-bar {
  height: 7px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  overflow: hidden;
  margin: 8px 0 6px;
}

.pack-bar > i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), #4d94f5);
  transition: width .3s ease;
}

.pack-bar > i.low { background: linear-gradient(90deg, var(--warn), #f59e0b); }
.pack-bar > i.empty { background: linear-gradient(90deg, var(--err), #ef4444); }

.pack-sub { font-size: 12.5px; color: var(--muted); }
.pack-sub b { color: var(--text); font-size: 14px; }

.pack-ops { display: flex; gap: 6px; flex: none; }

.log-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.log-head .grow { flex: 1 1 auto; }

@media (max-width: 640px) {
  .pack { flex-direction: column; align-items: stretch; }
  .pack-ops { justify-content: flex-end; }
}

.alert {
  border-radius: 8px;
  padding: 11px 14px;
  font-size: 13px;
  margin-bottom: 12px;
  border: 1px solid transparent;
}

.alert.ok { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.alert.warn { background: var(--warn-soft); border-color: var(--warn); color: var(--warn); }
.alert.err { background: var(--err-soft); border-color: var(--err); color: var(--err); }
.alert.info { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }

.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid transparent;
  white-space: nowrap;
}

.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: var(--ok); }
.badge.err { background: var(--err-soft); color: var(--err); border-color: var(--err); }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: var(--warn); }
.badge.mute { background: var(--panel-2); color: var(--muted); border-color: var(--border); }

/* ---------------- 表格 ---------------- */

.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }

th, td {
  padding: 9px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  background: var(--panel-2);
  color: var(--muted);
  font-weight: 600;
  position: sticky; top: 0;
  font-size: 12.5px;
}

tbody tr:hover { background: var(--panel-2); }
tbody tr:last-child td { border-bottom: 0; }

td.wrap { white-space: normal; max-width: 480px; }

.empty { padding: 40px; text-align: center; color: var(--muted); }

/* ---------------- 短信预览 ---------------- */

.bubble {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.75;
  word-break: break-all;
}

.bubble .ph { color: var(--muted); font-size: 12px; display: block; margin-bottom: 6px; }

.meta-line { font-size: 12.5px; color: var(--muted); margin-top: 8px; }

.hint-list { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 12.5px; }
.hint-list li { margin: 3px 0; }

code.inline {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 12.5px;
}

/* ---------------- Toast ---------------- */

#toast {
  position: fixed;
  right: 20px; bottom: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 60;
}

#toast > div {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 10px 16px;
  box-shadow: var(--shadow);
  font-size: 13px;
  max-width: 380px;
  animation: slide-in .18s ease-out;
}

#toast > div.ok { border-left-color: var(--ok); }
#toast > div.err { border-left-color: var(--err); }
#toast > div.warn { border-left-color: var(--warn); }

@keyframes slide-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; }
.hidden { display: none !important; }

/* 拖拽文件到号码框时的提示：整块描边变蓝 */
#bulkPane.drop-hot {
  outline: 2px dashed var(--primary);
  outline-offset: 6px;
  background: var(--primary-soft);
  border-radius: var(--radius);
}
#bulkPane.drop-hot textarea {
  border-color: var(--primary);
}
.mt { margin-top: 14px; }
.nowrap { white-space: nowrap; }

/* ================= 美化确认弹窗（替代原生 confirm） ================= */
.dlg-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, .45);
  backdrop-filter: blur(3px);
  animation: dlg-fade .18s ease;
}
.dlg-card {
  width: 100%;
  max-width: 400px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(16, 24, 40, .18), 0 2px 8px rgba(16, 24, 40, .08);
  padding: 22px 22px 18px;
  animation: dlg-pop .22s cubic-bezier(.34, 1.4, .64, 1);
}
.dlg-card.dlg-closing { animation: dlg-fade .18s ease reverse forwards; }
.dlg-head { display: flex; align-items: center; gap: 12px; }
.dlg-icon {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dlg-icon svg { width: 22px; height: 22px; }
.dlg-title { font-size: 16px; font-weight: 600; color: var(--text); }
.dlg-body { margin: 14px 2px 0; padding-left: 52px; }
.dlg-body p { margin: 0; font-size: 13.5px; line-height: 1.65; color: var(--muted); }
.dlg-body p + p { margin-top: 4px; }
.dlg-body p.dlg-gap { height: 8px; }
.dlg-body p:first-child { color: var(--text); }
.dlg-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.dlg-btn {
  min-width: 84px;
  padding: 9px 18px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: filter .15s, transform .06s, box-shadow .15s;
}
.dlg-btn:hover { filter: brightness(.96); }
.dlg-btn:active { transform: scale(.97); }
.dlg-btn-ok {
  border: none;
  color: #fff;
  box-shadow: 0 2px 8px rgba(16, 24, 40, .15);
}
.dlg-btn-ok:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.tone-primary .dlg-icon { background: var(--primary-soft); color: var(--primary); }
.tone-primary .dlg-btn-ok { background: var(--primary); }
.tone-primary .dlg-btn-ok:hover { background: var(--primary-dark); filter: none; }
.tone-warn .dlg-icon { background: var(--warn-soft); color: var(--warn); }
.tone-warn .dlg-btn-ok { background: var(--warn); }
.tone-warn .dlg-btn-ok:hover { filter: brightness(1.08); }
.tone-danger .dlg-icon { background: var(--err-soft); color: var(--err); }
.tone-danger .dlg-btn-ok { background: var(--err); }
.tone-danger .dlg-btn-ok:hover { filter: brightness(1.08); }

@keyframes dlg-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes dlg-pop {
  from { opacity: 0; transform: scale(.92) translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* 手机窄屏：弹窗贴底更像系统弹窗 */
@media (max-width: 520px) {
  .dlg-card { max-width: 460px; }
  .dlg-body { padding-left: 0; }
}