/* ============================================================
   Fund OS · 课题组经费管理
   设计语言：极简 / 大留白 / 细分割线 / 中大绿点缀
   ============================================================ */

:root {
  --green: #00573f;
  --green-soft: #e8f3ef;
  --red: #c0392b;
  --red-soft: #fbeae8;
  --ink: #1a1d1f;
  --ink-2: #5a6166;
  --ink-3: #98a0a6;
  --line: #e8eaec;
  --bg: #f7f8f7;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 20, 0.04), 0 4px 16px rgba(16, 24, 20, 0.05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; }
input, select { font-family: inherit; }

/* ---------- 布局 ---------- */
.app { min-height: 100vh; display: flex; flex-direction: column; }

.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px 64px;
  flex: 1;
}

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 248, 247, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand { display: flex; align-items: baseline; gap: 10px; min-width: 0; }

.brand-mark {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--green); color: #fff;
  border-radius: 9px; font-weight: 700; font-size: 16px;
  align-self: center; flex-shrink: 0;
}

.brand-name { font-weight: 700; font-size: 17px; letter-spacing: -0.01em; white-space: nowrap; }

.brand-sub {
  font-size: 13px; color: var(--ink-3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  cursor: text; border-bottom: 1px dashed transparent;
}
.brand-sub:hover { border-bottom-color: var(--ink-3); }

.topbar-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

/* ---------- 按钮 ---------- */
.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: #004433; }
.btn-primary:active { transform: scale(0.98); }

.btn-ghost { background: transparent; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { background: #fff; color: var(--ink); }

.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #a5301f; }

.btn-block { width: 100%; padding: 12px; font-size: 15px; margin-top: 8px; }

/* ---------- 余额总览 ---------- */
.hero {
  margin-top: 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 32px 32px 28px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  align-items: center;
}

.hero-label { font-size: 13px; color: var(--ink-3); letter-spacing: 0.06em; }

.hero-amount {
  font-size: clamp(38px, 7vw, 52px);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--green);
  line-height: 1.15;
  margin: 4px 0 6px;
  word-break: break-all;
}

.hero-amount.negative { color: var(--red); }

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

.hero-stats { display: flex; flex-direction: column; gap: 10px; }

.stat-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 12px 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.stat-label { font-size: 13px; color: var(--ink-2); }

.stat-value {
  font-size: 17px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.stat-value.income { color: var(--green); }
.stat-value.expense { color: var(--red); }

/* ---------- 区块 ---------- */
.section { margin-top: 28px; }

.section-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}
.section-head .section-title { margin-bottom: 0; }

/* ---------- 支出构成条形图 ---------- */
.category-bars {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 8px 20px;
}

.cat-row {
  display: grid;
  grid-template-columns: 88px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 11px 0;
}
.cat-row + .cat-row { border-top: 1px solid var(--line); }

.cat-name { font-size: 13px; color: var(--ink-2); white-space: nowrap; }

.cat-track { height: 8px; background: var(--bg); border-radius: 99px; overflow: hidden; }

.cat-fill {
  height: 100%;
  background: var(--green);
  border-radius: 99px;
  opacity: 0.85;
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  min-width: 2px;
}

.cat-amount {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-2);
  white-space: nowrap;
}

.cat-empty { padding: 18px 0; text-align: center; color: var(--ink-3); font-size: 13px; }

/* ---------- 筛选 ---------- */
.filters { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.search {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 14px;
  width: 220px;
  outline: none;
  transition: border-color 0.15s ease;
}
.search:focus { border-color: var(--green); }

.filter-tabs {
  display: flex;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 3px;
}

.tab {
  border: none;
  background: transparent;
  padding: 5px 14px;
  font-size: 13px;
  color: var(--ink-2);
  border-radius: 8px;
  transition: all 0.15s ease;
}
.tab.active { background: var(--green-soft); color: var(--green); font-weight: 600; }

/* ---------- 流水列表 ---------- */
.record-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.month-group + .month-group { border-top: 1px solid var(--line); }

.month-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 20px 8px;
  background: linear-gradient(to bottom, #fbfbfb, #fff);
}

.month-title { font-size: 13px; font-weight: 600; color: var(--ink-2); }
.month-sum { font-size: 12px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.record {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 13px 20px;
  transition: background 0.12s ease;
  position: relative;
}
.record + .record { border-top: 1px solid var(--line); }
.record:hover { background: #fafbfa; }

.record-icon {
  width: 38px; height: 38px;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px;
  flex-shrink: 0;
}
.record-icon.expense { background: var(--red-soft); }
.record-icon.income { background: var(--green-soft); }

.record-main { min-width: 0; }

.record-item {
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.record-meta {
  font-size: 12px;
  color: var(--ink-3);
  margin-top: 2px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.record-cat {
  display: inline-block;
  padding: 0 7px;
  border-radius: 6px;
  background: var(--bg);
  border: 1px solid var(--line);
  font-size: 11px;
  line-height: 18px;
}

.record-right { text-align: right; flex-shrink: 0; }

.record-amount {
  font-size: 16px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.record-amount.expense { color: var(--red); }
.record-amount.income { color: var(--green); }

.record-balance {
  font-size: 11px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  margin-top: 2px;
}

.record-delete {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: var(--red);
  color: #fff;
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}
.record:hover .record-delete { opacity: 0.92; pointer-events: auto; }
.record:hover .record-right { opacity: 0.15; }
.record-right { transition: opacity 0.15s ease; }

.empty { text-align: center; color: var(--ink-3); font-size: 14px; padding: 40px 0; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 48px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
}
.footer a { color: var(--green); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ---------- 弹窗 ---------- */
.modal-mask[hidden] { display: none; }

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(20, 26, 23, 0.45);
  backdrop-filter: blur(3px);
  z-index: 50;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
  animation: fadeIn 0.18s ease;
}

.modal {
  background: var(--card);
  border-radius: 20px 20px 0 0;
  width: 100%;
  max-width: 520px;
  max-height: 92vh;
  overflow-y: auto;
  animation: slideUp 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}

.modal-sm { max-width: 380px; border-radius: 20px; margin-bottom: 20vh; }

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}
.modal-head h3 { font-size: 17px; font-weight: 600; }

.modal-close {
  border: none;
  background: var(--bg);
  width: 30px; height: 30px;
  border-radius: 50%;
  font-size: 18px;
  color: var(--ink-2);
  line-height: 1;
}
.modal-close:hover { background: var(--line); }

.modal-body { padding: 18px 24px 28px; }

.type-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 18px;
}

.type-btn {
  border: none;
  background: transparent;
  padding: 9px;
  font-size: 14px;
  border-radius: 9px;
  color: var(--ink-2);
  transition: all 0.15s ease;
}
.type-btn.active[data-type="expense"] { background: var(--red-soft); color: var(--red); font-weight: 600; }
.type-btn.active[data-type="income"] { background: var(--green-soft); color: var(--green); font-weight: 600; }

.field { display: block; margin-bottom: 14px; min-width: 0; }

.field-label {
  display: block;
  font-size: 12px;
  color: var(--ink-2);
  margin-bottom: 6px;
}

.field input, .field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 15px;
  outline: none;
  background: #fff;
  transition: border-color 0.15s ease;
  appearance: none;
}
.field select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2398a0a6' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.field input:focus, .field select:focus { border-color: var(--green); }

#fAmount { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.confirm-text { font-size: 15px; padding: 8px 0 18px; }

.confirm-actions { display: flex; justify-content: flex-end; gap: 10px; }

@keyframes fadeIn { from { opacity: 0; } }
@keyframes slideUp { from { transform: translateY(28px); opacity: 0.6; } }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: 99px;
  z-index: 99;
  animation: toastIn 0.25s ease;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 10px); } }

/* ---------- 桌面端适配 ---------- */
@media (min-width: 641px) {
  .modal-mask { align-items: center; padding: 24px; }
  .modal { border-radius: 20px; }
}

/* ---------- 移动端适配 ---------- */
@media (max-width: 640px) {
  .container { padding: 0 14px 48px; }

  .brand-sub { display: none; }
  .topbar-actions .btn-ghost { display: none; }

  .hero {
    grid-template-columns: 1fr;
    padding: 26px 22px 20px;
    gap: 18px;
    margin-top: 18px;
  }

  .hero-stats { flex-direction: row; flex-wrap: wrap; }
  .stat-card { flex: 1 1 30%; flex-direction: column; gap: 2px; padding: 10px 14px; }
  .stat-value { font-size: 15px; }

  .filters { width: 100%; }
  .search { flex: 1; width: auto; min-width: 0; }

  .record { grid-template-columns: 36px 1fr auto; gap: 10px; padding: 12px 14px; }
  .record-delete { display: none; }

  .cat-row { grid-template-columns: 72px 1fr auto; gap: 10px; }
}

/* ---------- 报销跟踪 ---------- */
.claim-overview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}
.claim-stat {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 13px 16px;
}
.claim-stat-label { color: var(--ink-2); font-size: 12px; }
.claim-stat-value { margin-top: 3px; color: var(--green); font-size: 17px; font-weight: 650; font-variant-numeric: tabular-nums; white-space: nowrap; }
.claim-stat-value.outstanding { color: var(--red); }
.claim-list { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); box-shadow: var(--shadow); }
.claim-empty { padding: 24px 20px; text-align: center; color: var(--ink-3); font-size: 13px; }
.claim-card { padding: 18px 20px; }
.claim-card + .claim-card { border-top: 1px solid var(--line); }
.claim-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.claim-main { min-width: 0; }
.claim-main h3 { font-size: 15px; font-weight: 600; line-height: 1.45; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.claim-main p { margin-top: 2px; color: var(--ink-3); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.claim-money { flex: 0 0 auto; text-align: right; }
.claim-money strong { display: block; color: var(--red); font-size: 16px; font-variant-numeric: tabular-nums; }
.claim-money span { color: var(--ink-3); font-size: 11px; }
.claim-progress { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 12px; margin-top: 13px; color: var(--ink-2); font-size: 12px; font-variant-numeric: tabular-nums; }
.claim-progress-track { height: 7px; overflow: hidden; border-radius: 99px; background: var(--bg); }
.claim-progress-fill { height: 100%; min-width: 2px; background: var(--green); border-radius: inherit; transition: width 0.25s ease; }
.claim-actions { display: flex; align-items: center; gap: 12px; margin-top: 13px; }
.btn-small { padding: 6px 11px; font-size: 12px; }
.btn-small:disabled { cursor: not-allowed; opacity: 0.45; }
.text-action { padding: 0; border: 0; background: transparent; color: var(--ink-2); font-size: 12px; }
.text-action:hover { color: var(--ink); text-decoration: underline; }
.danger-action { color: var(--red); }
.batch-list { margin-top: 14px; border-top: 1px solid var(--line); }
.batch-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 12px; padding: 10px 0 0; }
.batch-main { min-width: 0; display: flex; align-items: baseline; gap: 8px; overflow: hidden; }
.batch-person { flex: 0 0 auto; color: var(--ink); font-size: 13px; font-weight: 500; }
.batch-meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink-3); font-size: 12px; }
.batch-amount { color: var(--green); font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.batch-empty { margin-top: 13px; color: var(--ink-3); font-size: 12px; }
.form-context { margin-bottom: 16px; padding: 9px 12px; border-radius: 8px; background: var(--green-soft); color: var(--green); font-size: 13px; }
.check-field { display: flex; align-items: center; gap: 8px; margin: 2px 0 14px; color: var(--ink-2); font-size: 13px; }
.check-field input { width: 16px; height: 16px; accent-color: var(--green); }
@media (max-width: 640px) {
  .topbar-actions #btnAddClaim { display: none; }
  .claim-overview { gap: 8px; }
  .claim-stat { padding: 11px 12px; }
  .claim-stat-value { font-size: 14px; }
  .claim-card { padding: 15px 14px; }
  .claim-head { gap: 10px; }
  .claim-progress { grid-template-columns: 1fr; gap: 5px; }
  .batch-row { grid-template-columns: minmax(0, 1fr) auto auto; gap: 8px; }
  .batch-main { display: block; }
  .batch-meta { display: block; margin-top: 1px; }
}