/* ===== Base ===== */
:root {
  --bg: #f0f7ff;
  --card: #ffffff;
  --text: #1e3a5f;
  --muted: #7b93ad;
  --border: #e3edf7;
  --shadow: 0 4px 16px rgba(30, 58, 95, 0.08);
  --radius: 20px;

  --blue: #38bdf8;
  --blue-deep: #0284c7;
  --blue-soft: #e0f2fe;
  --green: #34d399;
  --green-deep: #059669;
  --green-soft: #d1fae5;
  --amber-soft: #fef3c7;
  --amber-text: #92400e;
}

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

html { font-size: 17px; }

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  padding-bottom: 110px;
}

/* ===== Barra superior ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 8px;
}

.topbar h1 { font-size: 1.4rem; letter-spacing: -0.5px; }

.topbar-right { display: flex; gap: 8px; align-items: center; }

.vault-chip {
  border: none;
  background: var(--card);
  box-shadow: var(--shadow);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
}

.icon-btn {
  border: none;
  background: var(--card);
  box-shadow: var(--shadow);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  font-size: 1.15rem;
  cursor: pointer;
}

/* ===== Banner de cierre ===== */
.closure-banner {
  margin: 10px 16px;
  background: var(--amber-soft);
  color: var(--amber-text);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

/* ===== Banner de propuestas ===== */
.proposal-banner {
  margin: 10px 16px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.btn-small-blue { background: #fff; color: var(--blue-deep); }

.proposal-card { border-top: 1px solid var(--border); padding: 16px 0; }
.proposal-card h3 { margin-bottom: 8px; }

.proposal-diff {
  background: var(--bg);
  border-radius: 14px;
  padding: 12px 16px;
  margin-bottom: 12px;
  font-size: 0.98rem;
  line-height: 1.7;
}
.proposal-diff .new-value { font-weight: 800; color: var(--blue-deep); }

.proposal-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.btn-approve { background: var(--green-soft); color: var(--green-deep); }
.btn-reject { background: var(--bg); color: var(--muted); }

.waiting-note {
  margin-top: 8px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 0.88rem;
  line-height: 1.5;
}

/* ===== Tanques ===== */
.tanks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 12px 16px;
  max-width: 560px;
  margin: 0 auto;
}

.tank-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 12px 18px;
  text-align: center;
}

.tank-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tank {
  position: relative;
  height: 210px;
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fbff, #eef5fc);
  border: 3px solid var(--border);
  overflow: hidden;
  margin: 0 auto 12px;
  max-width: 150px;
}

.water {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 0%;
  transition: height 1.2s cubic-bezier(0.4, 0.0, 0.2, 1);
}

.tank-blue .water { background: linear-gradient(180deg, var(--blue), var(--blue-deep)); }
.tank-green .water { background: linear-gradient(180deg, var(--green), var(--green-deep)); }

/* Ola: elipse gigante girando sobre la superficie del agua */
.water::before,
.water::after {
  content: '';
  position: absolute;
  top: -14px;
  left: 50%;
  width: 300px;
  height: 300px;
  margin-left: -150px;
  border-radius: 42%;
  background: rgba(255, 255, 255, 0.35);
  animation: wave 7s linear infinite;
}

.water::after {
  border-radius: 46%;
  background: rgba(255, 255, 255, 0.2);
  animation-duration: 11s;
  animation-direction: reverse;
}

@keyframes wave {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.tank-amount {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  z-index: 2;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  text-shadow: 0 1px 4px rgba(255, 255, 255, 0.8);
  pointer-events: none;
}

.tank-meta { font-size: 0.85rem; color: var(--muted); line-height: 1.5; }
.tank-meta strong { color: var(--text); }

/* ===== Movimientos ===== */
.movements {
  max-width: 560px;
  margin: 8px auto 0;
  padding: 0 16px;
}

.movements h2 { font-size: 1.05rem; margin: 10px 4px; }

.expense-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }

.expense-list .empty {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  color: var(--muted);
}

.expense-item {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.expense-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-blue { background: var(--blue); }
.dot-green { background: var(--green); }

.expense-info { flex: 1; min-width: 0; }
.expense-info .who { font-weight: 700; font-size: 0.95rem; }
.expense-info .cat { font-size: 0.8rem; color: var(--muted); }
.expense-amount { font-weight: 800; font-size: 1.05rem; }

.expense-delete {
  border: none;
  background: none;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 6px;
}

/* ===== FAB ===== */
.fab {
  position: fixed;
  right: 20px;
  bottom: calc(20px + env(safe-area-inset-bottom));
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--blue), var(--green-deep));
  color: #fff;
  font-size: 2.1rem;
  line-height: 1;
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.4);
  cursor: pointer;
  z-index: 20;
  transition: transform 0.15s;
}
.fab:active { transform: scale(0.92); }

/* ===== Hojas (bottom sheets) ===== */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(30, 58, 95, 0.4);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 30;
}

.sheet {
  background: var(--card);
  border-radius: 24px 24px 0 0;
  padding: 12px 22px calc(24px + env(safe-area-inset-bottom));
  width: 100%;
  max-width: 560px;
  max-height: 88dvh;
  overflow-y: auto;
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { transform: translateY(40%); opacity: 0.5; }
  to   { transform: translateY(0); opacity: 1; }
}

.sheet-handle {
  width: 44px; height: 5px;
  border-radius: 3px;
  background: var(--border);
  margin: 0 auto 14px;
}

.sheet h2 { font-size: 1.2rem; margin-bottom: 14px; }

.field-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  margin: 14px 0 8px;
}
.muted { font-weight: 400; }

.amount-input {
  width: 100%;
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 12px;
  color: var(--text);
  background: var(--bg);
}
.amount-input:focus { outline: none; border-color: var(--blue); }

.payer-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.payer-btn {
  padding: 16px 8px;
  border-radius: 16px;
  border: 2px solid var(--border);
  background: var(--card);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}

.payer-btn.active-blue { border-color: var(--blue); background: var(--blue-soft); color: var(--blue-deep); }
.payer-btn.active-green { border-color: var(--green); background: var(--green-soft); color: var(--green-deep); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  border: 2px solid var(--border);
  background: var(--card);
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 0.92rem;
  color: var(--muted);
  cursor: pointer;
}
.chip.active { border-color: var(--blue); background: var(--blue-soft); color: var(--blue-deep); font-weight: 700; }

.sheet-actions {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 10px;
  margin-top: 22px;
}

.btn {
  border: none;
  border-radius: 16px;
  padding: 15px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.6; }

.btn-primary { background: linear-gradient(135deg, var(--blue-deep), var(--blue)); color: #fff; }
.btn-ghost { background: var(--bg); color: var(--muted); }
.btn-small { padding: 10px 16px; font-size: 0.9rem; background: #fff; color: var(--amber-text); border-radius: 12px; }

/* Cierre de mes */
.closure-user { border-top: 1px solid var(--border); padding: 16px 0; }
.closure-user h3 { margin-bottom: 4px; }
.closure-user .leftover { font-size: 1.6rem; font-weight: 800; margin: 6px 0 12px; }
.closure-actions { display: grid; gap: 10px; }
.btn-vault { background: var(--green-soft); color: var(--green-deep); }
.btn-rollover { background: var(--blue-soft); color: var(--blue-deep); }

/* Ajustes */
.settings-user { border-top: 1px solid var(--border); padding: 8px 0 16px; }
.settings-user h3 { margin: 10px 0 4px; }
.settings-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.text-input {
  width: 100%;
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg);
}
.text-input:focus { outline: none; border-color: var(--blue); }

/* Tope mensual derivado (solo lectura): semanal × 4 */
.derived-monthly {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 12px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--muted);
  background: var(--bg);
}

.derived-hint {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ===== Login ===== */
.login-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-card h2 { font-size: 1.5rem; margin-bottom: 6px; }
.login-card .field-label { text-align: left; }
.login-logo { width: 72px; height: 72px; }
.login-btn { width: 100%; margin-top: 18px; }

.login-hint {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

.payer-note {
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--muted);
  text-align: center;
}
.payer-note strong { color: var(--text); }

.btn-logout {
  width: 100%;
  margin-top: 12px;
  background: none;
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: underline;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(100px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--text);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  z-index: 60;
  box-shadow: var(--shadow);
  transition: opacity 0.3s;
  max-width: 90vw;
  text-align: center;
}

.hidden { display: none !important; }

@media (min-width: 600px) {
  .tank { max-width: 180px; height: 240px; }
}