/* Chia Tiền Nhóm — main styles */
.ctn-container { max-width: 1180px; padding-top: 40px; }

.back-link { display: inline-block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 24px; transition: color 0.2s ease; }
.back-link:hover { color: var(--accent); }

.ctn-hero { margin-bottom: 24px; }
.ctn-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.ctn-hero .tagline { font-size: 0.95rem; }

.trip-title {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid rgba(124,156,255,0.4);
  color: var(--text);
  font-family: inherit;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  padding: 8px 0 12px;
  margin-bottom: 24px;
  outline: none;
  transition: border-color 0.2s ease;
}
.trip-title:focus { border-color: var(--accent); }
.trip-title::placeholder { color: var(--text-muted); }

.ctn-grid { display: grid; grid-template-columns: 1fr 380px; gap: 20px; align-items: start; }

.ctn-section {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
}
.ctn-section-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.ctn-section-tag { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; font-weight: 700; color: var(--accent); letter-spacing: 0.06em; }
.ctn-section-meta { margin-left: auto; font-size: 0.78rem; color: var(--text-muted); }

/* Members */
.members-list { display: flex; flex-wrap: wrap; gap: 8px; min-height: 36px; margin-bottom: 12px; }
.member-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 999px; padding: 4px 10px 4px 12px;
  font-size: 0.85rem;
}
.member-chip-remove { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.9rem; padding: 0 2px; line-height: 1; }
.member-chip-remove:hover { color: var(--danger); }
.members-empty { color: var(--text-muted); font-size: 0.88rem; padding: 8px 0; }

.member-add-row { display: flex; gap: 8px; }
.member-add-row input {
  flex: 1; background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 12px; color: var(--text); font: inherit; font-size: 0.9rem;
}
.member-add-row input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.member-add-row button { background: var(--accent); color: #0b0d12; border: 1px solid var(--accent); border-radius: 8px; padding: 9px 18px; font: inherit; font-weight: 600; cursor: pointer; }
.member-add-row button:hover { transform: translateY(-1px); }
.member-add-row button:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* Expenses */
.expenses-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.expenses-empty { color: var(--text-muted); font-size: 0.88rem; padding: 12px 0; text-align: center; }

.expense-item {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px;
  display: flex; align-items: flex-start; gap: 10px;
}
.expense-info { flex: 1; min-width: 0; }
.expense-name-row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; }
.expense-name { font-weight: 600; }
.expense-amount { color: var(--warn); font-weight: 700; font-family: 'JetBrains Mono', monospace; font-size: 0.92rem; }
.expense-detail { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }
.expense-payer { color: var(--text); }
.expense-remove { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 4px; font-size: 1rem; }
.expense-remove:hover { color: var(--danger); }

.btn-dashed {
  width: 100%; background: transparent; border: 1px dashed var(--border);
  color: var(--text-muted); padding: 11px; border-radius: 10px;
  font: inherit; font-size: 0.9rem; cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.btn-dashed:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn-dashed:disabled { opacity: 0.4; cursor: not-allowed; }

/* Expense form (inline) */
.expense-form {
  margin-top: 12px;
  background: var(--bg);
  border: 1px solid rgba(124,156,255,0.4);
  border-radius: 10px;
  padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.expense-form-head { display: flex; justify-content: space-between; align-items: center; }
.expense-form-head strong { color: var(--accent); }
.btn-x { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1rem; padding: 4px; }
.btn-x:hover { color: var(--text); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 0.82rem; color: var(--text-muted); }

.expense-form input, .expense-form select {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 12px; color: var(--text); font: inherit; font-size: 0.9rem;
}
.expense-form input:focus, .expense-form select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow);
}

.participant-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.participant-pill {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 5px 12px; font: inherit; font-size: 0.82rem; cursor: pointer;
  transition: all 0.15s ease;
}
.participant-pill.is-on { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); }
.participant-pill:hover { border-color: var(--accent); }

.btn-primary, .btn-ghost, .btn-danger {
  font: inherit; font-weight: 600; font-size: 0.92rem;
  padding: 10px 18px; border-radius: 8px; cursor: pointer;
  transition: transform 0.15s ease, opacity 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #0b0d12; border-color: var(--accent); }
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: #0b0d12; border-color: var(--danger); }
.btn-danger:hover { transform: translateY(-1px); }

/* Result card (export target) */
.result-card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; margin-bottom: 20px;
}
.result-head { display: flex; justify-content: space-between; padding-bottom: 14px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.result-title { font-size: 1.25rem; font-weight: 700; color: var(--accent); margin: 0; }
.result-date { font-size: 0.78rem; color: var(--text-muted); margin: 4px 0 0; }

.result-block { margin-bottom: 16px; }
.result-block-head { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; font-weight: 700; color: var(--text-muted); letter-spacing: 0.08em; margin-bottom: 8px; }

.result-expense-row, .result-balance-row { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 0.84rem; padding: 3px 0; }
.result-expense-name { color: var(--text); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.result-expense-payer { color: var(--text-muted); font-size: 0.78rem; }
.result-expense-amt { color: var(--warn); font-weight: 700; font-family: 'JetBrains Mono', monospace; }
.result-total { display: flex; justify-content: space-between; padding-top: 8px; margin-top: 8px; border-top: 1px solid var(--border); font-weight: 700; }
.result-total-amt { color: var(--accent); font-family: 'JetBrains Mono', monospace; }

.balance-name { flex: 1; }
.balance-paid { color: var(--text-muted); font-size: 0.78rem; }
.balance-net { font-family: 'JetBrains Mono', monospace; font-weight: 700; min-width: 100px; text-align: right; }
.balance-net.is-positive { color: var(--success); }
.balance-net.is-negative { color: var(--danger); }
.balance-net.is-zero { color: var(--text-muted); }

.settlement-row {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; margin-bottom: 6px;
  font-size: 0.85rem;
}
.settlement-from { font-weight: 600; color: var(--danger); }
.settlement-arrow { color: var(--text-muted); }
.settlement-to { font-weight: 600; color: var(--success); }
.settlement-amount { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--warn); }

.result-empty { color: var(--text-muted); font-size: 0.85rem; }
.result-success { color: var(--success); font-size: 0.85rem; }

.result-bank { display: flex; gap: 14px; padding-top: 14px; border-top: 1px solid var(--border); margin-top: 14px; }
.result-bank img { width: 96px; height: 96px; object-fit: contain; background: white; border: 1px solid var(--border); border-radius: 6px; }
.result-bank-label { font-size: 0.78rem; color: var(--text-muted); margin: 0 0 4px; }
.result-bank-name { font-weight: 700; margin: 2px 0; }
.result-bank-account { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--warn); margin: 2px 0; }

/* Bank inputs section */
.bank-fields { display: flex; flex-direction: column; gap: 10px; }
.bank-fields input {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 12px; color: var(--text); font: inherit; font-size: 0.9rem;
}
.bank-fields input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.bank-qr-preview { position: relative; }
.bank-qr-preview img { width: 100%; height: 130px; object-fit: contain; background: white; border: 1px solid var(--border); border-radius: 8px; }
.bank-qr-preview .btn-x { position: absolute; top: 6px; right: 6px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 6px; }
.btn-upload { display: flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; }

.btn-export { width: 100%; margin-bottom: 8px; padding: 12px; }
.btn-reset { width: 100%; }
.export-icon { font-weight: 700; }