:root {
  --paper: #ECEEE6;
  --paper-raised: #F5F6F0;
  --ink: #1E2A22;
  --ink-soft: #4B5A4E;
  --line: #C9CCBE;
  --accent: #2F6F4E;
  --accent-dark: #244F39;
  --gold: #B4863C;
  --rust: #A6402B;
  --rust-soft: #F1DED7;
  --radius: 3px;

  --display: "Fraunces", Georgia, serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100dvh;
  background-image:
    linear-gradient(var(--paper) 0, var(--paper) 100%),
    repeating-linear-gradient(transparent 0 38px, rgba(30,42,34,0.05) 38px 39px);
  background-attachment: local;
}

.app {
  max-width: 640px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 1.4rem 1.25rem 1rem;
  border-bottom: 2px solid var(--ink);
}
.brand-logo {
  width: 28px;
  height: 28px;
  align-self: center;
  border-radius: 50%;
  object-fit: cover;
  margin-left: auto;
}
.brand {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: -0.01em;
}
.topbar-eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-left: auto;
}
.icon-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--ink);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  margin-right: 0.2rem;
}

main { flex: 1; padding: 1rem 1.1rem 6rem; }
.view[hidden] { display: none; }

/* ===== Liste des budgets ===== */
.ledger-list { display: flex; flex-direction: column; gap: 0.9rem; margin-top: 0.6rem; }

.budget-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.budget-card:hover { box-shadow: 0 2px 10px rgba(30,42,34,0.08); }
.budget-card:active { transform: scale(0.99); }

.budget-card-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}
.budget-card-name {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 600;
}
.budget-card-amount {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--accent-dark);
  font-weight: 600;
  white-space: nowrap;
}
.budget-card-amount.negative { color: var(--rust); }
.budget-card-amount-label {
  font-family: var(--body);
  font-weight: 400;
  font-size: 0.68rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.budget-card-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin-top: 0.35rem;
  letter-spacing: 0.02em;
}

/* ===== États vides ===== */
.empty-state { text-align: center; padding: 3rem 1rem; }
.empty-state.small { padding: 1.2rem 0; text-align: left; color: var(--ink-soft); font-size: 0.9rem; }
.empty-title { font-family: var(--display); font-size: 1.15rem; margin: 0 0 0.3rem; }
.empty-sub { color: var(--ink-soft); font-size: 0.9rem; margin: 0; }

/* ===== Bouton d'action flottant ===== */
.fab {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: 999px;
  padding: 0.75rem 1.3rem;
  font-family: var(--body);
  font-weight: 500;
  font-size: 0.92rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(30,42,34,0.28);
  z-index: 5;
}
.fab:active { transform: translateX(-50%) scale(0.97); }
.fab-plus { font-family: var(--mono); font-size: 1.05rem; }

/* ===== Page budget ===== */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.8rem;
  margin-bottom: 0.6rem;
}
.page-title { font-family: var(--display); font-size: 1.4rem; margin: 0 0 0.15rem; }
.page-sub { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); margin: 0; }

.text-btn {
  background: none;
  border: none;
  font-family: var(--body);
  font-size: 0.85rem;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0.2rem 0;
}
.text-btn.danger { color: var(--rust); }

.warning-bar {
  background: var(--rust-soft);
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius);
  margin: 0.7rem 0;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin: 1.6rem 0 0.6rem;
}

/* ===== Participants : jauge encre ===== */
.participant-list { display: flex; flex-direction: column; gap: 0.55rem; }

.participant-row {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
}
.participant-row-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}
.participant-name { font-weight: 500; font-size: 0.94rem; }
.participant-figures {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.participant-figures .restant { color: var(--ink); font-weight: 600; }
.participant-figures .restant.negative { color: var(--rust); }

.ink-track {
  height: 6px;
  border-radius: 3px;
  background: repeating-linear-gradient(90deg, var(--line) 0 3px, transparent 3px 6px);
  overflow: hidden;
}
.ink-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.25s ease;
}
.ink-fill.over { background: var(--rust); }

.line-btn {
  display: block;
  width: 100%;
  background: none;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 0.55rem;
  font-family: var(--body);
  font-size: 0.85rem;
  color: var(--ink-soft);
  cursor: pointer;
  margin-top: 0.6rem;
}
.line-btn.small { margin-top: 0.4rem; padding: 0.45rem; font-size: 0.8rem; }

/* ===== Dépenses ===== */
.expense-list { display: flex; flex-direction: column; }
.expense-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.1rem;
  border-bottom: 1px solid var(--line);
}
.expense-row:last-child { border-bottom: none; }
.expense-info { display: flex; flex-direction: column; }
.expense-label { font-size: 0.92rem; }
.expense-meta { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-soft); }
.expense-amount { font-family: var(--mono); font-weight: 600; font-size: 0.94rem; }
.expense-delete {
  background: none; border: none; color: var(--ink-soft);
  cursor: pointer; font-size: 0.85rem; margin-left: 0.6rem;
}
.expense-delete:hover { color: var(--rust); }
.expense-row-inner { display: flex; align-items: center; }

/* ===== Modales / sheets ===== */
.sheet {
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 1.4rem 1.25rem calc(1.25rem + env(safe-area-inset-bottom));
  width: 100%;
  max-width: 640px;
  margin: auto auto 0;
  background: var(--paper-raised);
  color: var(--ink);
}
.sheet::backdrop { background: rgba(30,42,34,0.45); }
.sheet-title { font-family: var(--display); font-size: 1.2rem; margin: 0 0 1rem; }

.field { display: flex; flex-direction: column; gap: 0.3rem; margin-bottom: 0.9rem; font-size: 0.85rem; color: var(--ink-soft); }
.field input, .field select {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 0.6rem;
}
.field input:focus, .field select:focus, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.field-row { display: flex; gap: 0.6rem; }
.field-row .field { flex: 1; }
.field-currency select { padding-right: 0.4rem; }

.field-block { margin-bottom: 0.9rem; }
.field-block-head {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 0.4rem;
}
.alloc-sum { font-family: var(--mono); color: var(--ink); }

.participant-rows { display: flex; flex-direction: column; gap: 0.5rem; }
.participant-row-input { display: flex; gap: 0.5rem; align-items: center; }
.participant-row-input input[type="text"] { flex: 1.4; }
.participant-row-input input[type="number"] { flex: 1; }
.participant-row-input button {
  background: none; border: none; color: var(--ink-soft); font-size: 1rem; cursor: pointer; padding: 0.2rem 0.3rem;
}
.participant-row-input button:hover { color: var(--rust); }

.sheet-actions { display: flex; justify-content: flex-end; gap: 1rem; margin-top: 1.2rem; }
.solid-btn {
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: var(--radius);
  padding: 0.6rem 1.1rem;
  font-family: var(--body);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
}
.solid-btn:disabled { opacity: 0.4; cursor: not-allowed; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}