/* ═══════════════════════════════════════════════════════════
   投资流水账 — Design System
   Deep navy + gold accents · glass · refined typography
═══════════════════════════════════════════════════════════ */

:root {
  --bg-deep: #070b14;
  --bg: #0b1220;
  --bg-elevated: #111a2e;
  --bg-card: rgba(17, 26, 46, 0.72);
  --bg-card-solid: #121b30;
  --border: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.22);
  --text: #e8eef9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gold: #d4a853;
  --gold-soft: rgba(212, 168, 83, 0.15);
  --gold-glow: rgba(212, 168, 83, 0.35);
  --accent: #5b8def;
  --accent-soft: rgba(91, 141, 239, 0.14);
  --success: #34d399;
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  --font: "DM Sans", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --topbar-h: 64px;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.55;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

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

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

input,
textarea {
  width: 100%;
  background: rgba(7, 11, 20, 0.55);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 0.75rem 0.9rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
textarea:focus {
  border-color: rgba(212, 168, 83, 0.55);
  box-shadow: 0 0 0 3px var(--gold-soft);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

input[type="date"] {
  color-scheme: dark;
}

.hidden {
  display: none !important;
}

/* ── Views ─────────────────────────────────────────────── */

.view {
  min-height: 100dvh;
}

/* ── Login ─────────────────────────────────────────────── */

.login-view {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.login-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
}

.orb-1 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(91, 141, 239, 0.45), transparent 70%);
  top: -10%;
  right: -5%;
}

.orb-2 {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(212, 168, 83, 0.35), transparent 70%);
  bottom: -8%;
  left: -8%;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

.login-card {
  position: relative;
  width: min(100%, 400px);
  background: linear-gradient(165deg, rgba(18, 27, 48, 0.92), rgba(11, 18, 32, 0.88));
  border: 1px solid var(--border-strong);
  border-radius: 24px;
  padding: 2.25rem 1.75rem 1.75rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.login-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.brand-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--gold-soft), var(--accent-soft));
  color: var(--gold);
  border: 1px solid rgba(212, 168, 83, 0.25);
}

.brand-mark.sm {
  width: 36px;
  height: 36px;
  margin: 0;
  border-radius: 10px;
}

.login-brand h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.login-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.login-hint {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.input-wrap {
  position: relative;
}

.input-wrap input {
  padding-right: 2.75rem;
}

.input-wrap .icon-btn {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
}

/* ── Buttons ───────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-xs);
  font-weight: 600;
  font-size: 0.92rem;
  transition: transform 0.12s, background 0.15s, border-color 0.15s, opacity 0.15s;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.55;
  pointer-events: none;
}

.btn-primary {
  background: linear-gradient(135deg, #c9973d, #e0b65a 45%, #b8862f);
  color: #1a1205;
  box-shadow: 0 8px 24px rgba(212, 168, 83, 0.22);
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-ghost {
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: rgba(148, 163, 184, 0.14);
  color: var(--text);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.25);
}

.btn-block {
  width: 100%;
  margin-top: 1rem;
}

.btn.sm {
  padding: 0.45rem 0.75rem;
  font-size: 0.82rem;
  border-radius: 8px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--text-secondary);
  transition: background 0.15s, color 0.15s;
}

.icon-btn:hover {
  background: rgba(148, 163, 184, 0.12);
  color: var(--text);
}

/* ── Forms ─────────────────────────────────────────────── */

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field > span {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0.75rem 0 0;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-section {
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.form-section:last-of-type {
  border-bottom: none;
  margin-bottom: 0.5rem;
}

.form-section h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.section-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.investor-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.investor-row {
  display: grid;
  grid-template-columns: 28px 1fr 1fr;
  gap: 0.65rem;
  align-items: end;
  padding: 0.75rem;
  background: rgba(7, 11, 20, 0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.investor-index {
  width: 28px;
  height: 28px;
  margin-bottom: 0.35rem;
  display: grid;
  place-items: center;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gold);
  background: var(--gold-soft);
  border: 1px solid rgba(212, 168, 83, 0.22);
}

@media (max-width: 480px) {
  .investor-row {
    grid-template-columns: 28px 1fr;
  }

  .investor-row .field:last-child {
    grid-column: 2;
  }
}

/* ── App shell ─────────────────────────────────────────── */

.app-view {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--topbar-h);
  background: rgba(7, 11, 20, 0.78);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  height: 100%;
  padding: 0 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.topbar-titles {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar-titles strong {
  font-size: 0.95rem;
  font-weight: 650;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-titles span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.main {
  flex: 1;
  width: min(100%, 960px);
  margin: 0 auto;
  padding: 1.25rem 1.15rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.footer {
  text-align: center;
  padding: 1rem 1rem calc(1.25rem + var(--safe-bottom));
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── Hero ──────────────────────────────────────────────── */

.hero {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border-strong);
  background:
    linear-gradient(145deg, rgba(20, 32, 58, 0.95), rgba(11, 18, 32, 0.98));
  padding: 1.75rem 1.35rem 1.4rem;
}

.hero-glow {
  position: absolute;
  width: 280px;
  height: 280px;
  right: -60px;
  top: -80px;
  background: radial-gradient(circle, var(--gold-glow), transparent 68%);
  opacity: 0.45;
  pointer-events: none;
}

.hero-head {
  position: relative;
  margin-bottom: 1.4rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-soft);
  border: 1px solid rgba(212, 168, 83, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
}

.balance-label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.balance-row {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 0.65rem;
}

.currency {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--gold);
}

.balance-num {
  font-size: clamp(2.2rem, 8vw, 3.1rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, #fff 20%, #c5d0e6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  max-width: 42ch;
}

.stat-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  margin-bottom: 1.15rem;
}

.stat-card {
  background: rgba(7, 11, 20, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.9rem;
}

.stat-card.accent {
  border-color: rgba(212, 168, 83, 0.22);
  background: linear-gradient(145deg, rgba(212, 168, 83, 0.08), rgba(7, 11, 20, 0.35));
}

.stat-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.stat-value {
  font-size: 1.05rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.progress-block {
  position: relative;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
}

.progress-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(7, 11, 20, 0.55);
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #b8862f, var(--gold), #f0d78c);
  box-shadow: 0 0 12px var(--gold-glow);
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  min-width: 0;
}

/* ── Panels ────────────────────────────────────────────── */

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.1rem;
  backdrop-filter: blur(12px);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.panel-head h3 {
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

/* ── Categories ────────────────────────────────────────── */

.category-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.category-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.25rem 0.75rem;
  align-items: center;
}

.category-item .name {
  font-size: 0.88rem;
  font-weight: 500;
}

.category-item .amount {
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
}

.category-bar {
  grid-column: 1 / -1;
  height: 5px;
  border-radius: 999px;
  background: rgba(7, 11, 20, 0.5);
  overflow: hidden;
}

.category-bar > i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #8eb4ff);
}

.category-item:nth-child(2) .category-bar > i {
  background: linear-gradient(90deg, #c9973d, var(--gold));
}

.category-item:nth-child(3) .category-bar > i {
  background: linear-gradient(90deg, #34d399, #6ee7b7);
}

.category-item:nth-child(4) .category-bar > i {
  background: linear-gradient(90deg, #a78bfa, #c4b5fd);
}

.category-item:nth-child(5) .category-bar > i {
  background: linear-gradient(90deg, #f472b6, #f9a8d4);
}

/* ── Ledger ────────────────────────────────────────────── */

.ledger-list {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.day-group {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.day-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0 0.15rem;
}

.day-head .date {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.day-head .day-total {
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.expense-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.75rem;
  padding: 0.9rem 1rem;
  background: rgba(7, 11, 20, 0.38);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s, background 0.15s;
}

.expense-card:hover {
  border-color: var(--border-strong);
  background: rgba(7, 11, 20, 0.55);
}

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

.expense-cat {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-bottom: 0.35rem;
}

.expense-desc {
  font-size: 0.92rem;
  font-weight: 500;
  word-break: break-word;
}

.expense-desc.empty {
  color: var(--text-muted);
  font-weight: 400;
}

.expense-amount {
  font-size: 1.05rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: #f0c674;
  text-align: right;
  white-space: nowrap;
}

.expense-actions {
  grid-column: 1 / -1;
  display: none;
  gap: 0.4rem;
  margin-top: 0.25rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--border);
}

.app-view.is-admin .expense-actions {
  display: flex;
}

.expense-actions .btn {
  flex: 1;
}

.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.empty-state strong {
  display: block;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  font-size: 1rem;
}

/* ── Modal ─────────────────────────────────────────────── */

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 6, 12, 0.72);
  backdrop-filter: blur(6px);
  animation: fadeIn 0.2s ease;
}

.modal-sheet {
  position: relative;
  width: min(100%, 480px);
  max-height: min(92dvh, 720px);
  overflow-y: auto;
  background: linear-gradient(180deg, #152038, var(--bg-card-solid));
  border: 1px solid var(--border-strong);
  border-radius: 20px 20px 0 0;
  padding: 1.25rem 1.2rem calc(1.25rem + var(--safe-bottom));
  box-shadow: var(--shadow);
  animation: sheetUp 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

.modal-sheet.wide {
  width: min(100%, 560px);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.15rem;
}

.modal-head h3 {
  font-size: 1.1rem;
  font-weight: 650;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.55rem;
  margin-top: 1.25rem;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes sheetUp {
  from { transform: translateY(24px); opacity: 0.6; }
  to { transform: translateY(0); opacity: 1; }
}

/* ── Toast ─────────────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(1.5rem + var(--safe-bottom));
  transform: translateX(-50%);
  z-index: 200;
  background: #1e2d4a;
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  animation: toastIn 0.25s ease;
  max-width: min(90vw, 360px);
  text-align: center;
}

.toast.error {
  border-color: rgba(248, 113, 113, 0.35);
  background: #2a1520;
  color: #fecaca;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Responsive ────────────────────────────────────────── */

@media (min-width: 640px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero {
    padding: 2rem 1.75rem 1.6rem;
  }

  .modal {
    align-items: center;
    padding: 1.5rem;
  }

  .modal-sheet {
    border-radius: 20px;
    padding: 1.5rem;
  }

  .expense-card {
    grid-template-columns: 1fr auto auto;
    align-items: center;
  }

  .app-view.is-admin .expense-actions {
    grid-column: auto;
    display: flex;
    flex-direction: column;
    border-top: none;
    margin-top: 0;
    padding-top: 0;
    margin-left: 0.5rem;
  }

  .expense-actions .btn {
    flex: none;
    padding: 0.35rem 0.65rem;
  }
}

@media (max-width: 480px) {
  .hide-sm {
    display: none;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .login-card {
    padding: 1.85rem 1.35rem 1.5rem;
  }
}

/* Loading pulse on balance */
.balance-num.loading {
  opacity: 0.4;
}