/* ═══════════════════════════════════════════════════════════
   TeamSplit – Custom Styles (Mobile First)
   Framework: Bootstrap 5.3
   Font: Inter (Google Fonts)
═══════════════════════════════════════════════════════════ */

:root {
  --ts-accent:        #4f46e5;
  --ts-accent-hover:  #4338ca;
  --ts-accent-light:  #eef2ff;
  --ts-accent-border: #c7d2fe;
  --ts-success:       #16a34a;
  --ts-success-light: #dcfce7;
  --ts-danger:        #dc2626;
  --ts-danger-light:  #fee2e2;
  --ts-warning:       #d97706;
  --ts-warning-light: #fef3c7;
  --ts-bg:            #f8f9fc;
  --ts-surface:       #ffffff;
  --ts-border:        #e5e7eb;
  --ts-text:          #111827;
  --ts-muted:         #6b7280;
  --ts-light:         #9ca3af;
  --ts-radius:        12px;
  --ts-radius-sm:     8px;
  --ts-shadow:        0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --ts-shadow-md:     0 4px 12px rgba(0,0,0,.08);
  --ts-shadow-lg:     0 10px 40px rgba(0,0,0,.12);
}

/* ── Base ──────────────────────────────────────────────────── */
body {
  background: var(--ts-bg);
  color: var(--ts-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
}

/* ── Header ────────────────────────────────────────────────── */
.ts-header {
  background: var(--ts-surface);
  border-bottom: 1px solid var(--ts-border);
  position: sticky;
  top: 0;
  z-index: 1040;
  height: 56px;
  display: flex;
  align-items: center;
}

.ts-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--ts-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.4px;
}

.ts-logo-icon {
  width: 30px;
  height: 30px;
  background: var(--ts-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 14px;
  flex-shrink: 0;
}

.ts-lang-btn {
  font-size: 13px;
  font-weight: 500;
  color: var(--ts-muted);
  border: 1px solid var(--ts-border);
  border-radius: 20px;
  padding: 5px 14px;
  text-decoration: none;
  transition: all .15s;
  white-space: nowrap;
}
.ts-lang-btn:hover { color: var(--ts-text); border-color: var(--ts-muted); }

/* ── Hero (index) ──────────────────────────────────────────── */
.ts-hero { padding: 32px 0 24px; }

.ts-hero-title {
  font-size: clamp(26px, 6vw, 42px);
  font-weight: 800;
  letter-spacing: -0.6px;
  line-height: 1.15;
  color: var(--ts-text);
}

.ts-hero-sub {
  font-size: 15px;
  color: var(--ts-muted);
  line-height: 1.7;
  margin-top: 12px;
}

.ts-feature-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ts-feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ts-muted);
}

.ts-check-icon {
  width: 20px;
  height: 20px;
  background: var(--ts-success-light);
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ts-success);
  font-size: 11px;
  font-weight: 700;
}

/* ── Cards ─────────────────────────────────────────────────── */
.ts-card {
  background: var(--ts-surface);
  border: 1px solid var(--ts-border);
  border-radius: var(--ts-radius);
  box-shadow: var(--ts-shadow);
  overflow: hidden;
}

.ts-card-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--ts-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--ts-surface);
}

.ts-card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ts-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
}

.ts-card-body { padding: 20px; }

/* ── Form controls ─────────────────────────────────────────── */
.ts-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ts-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
  display: block;
}

.ts-input {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--ts-border);
  border-radius: var(--ts-radius-sm);
  background: var(--ts-surface);
  color: var(--ts-text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
}

.ts-input:focus {
  border-color: var(--ts-accent);
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}

.ts-input::placeholder { color: var(--ts-light); }

.ts-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

/* ── Buttons ───────────────────────────────────────────────── */
.ts-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--ts-radius-sm);
  font-weight: 600;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all .15s;
  white-space: nowrap;
  text-decoration: none;
  -webkit-appearance: none;
  line-height: 1.4;
}

.ts-btn-primary {
  background: var(--ts-accent);
  color: #fff;
  border-color: var(--ts-accent);
}
.ts-btn-primary:hover  { background: var(--ts-accent-hover); border-color: var(--ts-accent-hover); color: #fff; }
.ts-btn-primary:active { transform: scale(.98); }
.ts-btn-primary:disabled { opacity: .55; cursor: not-allowed; }

.ts-btn-outline {
  background: transparent;
  color: var(--ts-text);
  border-color: var(--ts-border);
}
.ts-btn-outline:hover { border-color: var(--ts-muted); background: var(--ts-bg); }

.ts-btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ts-muted);
  padding: 6px 10px;
  font-size: 13px;
}
.ts-btn-ghost:hover { background: var(--ts-bg); color: var(--ts-text); }

.ts-btn-danger-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ts-danger);
  font-size: 13px;
  padding: 4px 8px;
}
.ts-btn-danger-ghost:hover { background: var(--ts-danger-light); }

.ts-btn-success {
  background: var(--ts-success);
  color: #fff;
  border-color: var(--ts-success);
  font-size: 13px;
  padding: 7px 14px;
}
.ts-btn-success:hover { background: #15803d; color: #fff; }

.ts-btn-sm { padding: 6px 14px; font-size: 13px; }
.ts-btn-full { width: 100%; }

.ts-btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--ts-radius-sm);
  font-size: 20px;
  flex-shrink: 0;
}

/* ── Member chips ──────────────────────────────────────────── */
.ts-chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.ts-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px 5px 12px;
  background: var(--ts-accent-light);
  border: 1px solid var(--ts-accent-border);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ts-accent);
}

.ts-chip-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ts-accent);
  font-size: 16px;
  line-height: 1;
  padding: 0 2px;
  opacity: .5;
  transition: opacity .15s;
  font-family: inherit;
}
.ts-chip-remove:hover { opacity: 1; }

.ts-add-row { display: flex; gap: 8px; }
.ts-add-row .ts-input { flex: 1; min-width: 0; }

/* ── Share box ─────────────────────────────────────────────── */
.ts-share-box {
  background: var(--ts-accent-light);
  border: 1px solid var(--ts-accent-border);
  border-radius: var(--ts-radius-sm);
  padding: 14px 16px;
}
.ts-share-label { font-size: 12px; color: var(--ts-accent); font-weight: 600; margin-bottom: 8px; }
.ts-share-row { display: flex; gap: 8px; }
.ts-share-row input {
  flex: 1;
  min-width: 0;
  background: var(--ts-surface);
  border: 1px solid var(--ts-accent-border);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 12px;
  color: var(--ts-muted);
  outline: none;
  font-family: inherit;
}
.ts-copied { font-size: 12px; color: var(--ts-success); margin-top: 6px; font-weight: 500; }

/* ── Expense items ─────────────────────────────────────────── */
.ts-expense-item {
  padding: 16px 20px;
  border-bottom: 1px solid var(--ts-border);
  transition: background .1s;
}
.ts-expense-item:last-child { border-bottom: none; }
.ts-expense-item:hover { background: var(--ts-bg); }

.ts-expense-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.ts-expense-name {
  font-weight: 600;
  font-size: 15px;
  margin: 0 0 3px;
}

.ts-expense-meta { font-size: 12px; color: var(--ts-muted); }

.ts-expense-amount {
  font-size: 17px;
  font-weight: 700;
  color: var(--ts-text);
  white-space: nowrap;
}

.ts-splits-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
}

.ts-split-pill {
  font-size: 11px;
  padding: 3px 9px;
  background: var(--ts-bg);
  border: 1px solid var(--ts-border);
  border-radius: 12px;
  color: var(--ts-muted);
}

.ts-expense-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
  flex-wrap: wrap;
}

/* ── Settlements ───────────────────────────────────────────── */
.ts-settlement-item {
  padding: 14px 20px;
  border-bottom: 1px solid var(--ts-border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.ts-settlement-item:last-child { border-bottom: none; }
.ts-settlement-item.ts-settled { opacity: .5; }

.ts-settlement-text {
  flex: 1;
  min-width: 160px;
  font-size: 14px;
  line-height: 1.5;
}
.ts-settlement-amount {
  font-weight: 700;
  color: var(--ts-warning);
}

.ts-settled-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--ts-success);
  background: var(--ts-success-light);
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

/* ── Split type tabs ───────────────────────────────────────── */
.ts-split-tabs {
  display: flex;
  border: 1.5px solid var(--ts-border);
  border-radius: var(--ts-radius-sm);
  overflow: hidden;
}
.ts-split-tab {
  flex: 1;
  padding: 9px 4px;
  border: none;
  background: var(--ts-bg);
  color: var(--ts-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  border-right: 1px solid var(--ts-border);
  font-family: inherit;
  text-align: center;
  line-height: 1.3;
}
.ts-split-tab:last-child { border-right: none; }
.ts-split-tab.active { background: var(--ts-accent); color: #fff; }
.ts-split-tab:hover:not(.active) { background: var(--ts-surface); color: var(--ts-text); }

/* ── Split rows ────────────────────────────────────────────── */
.ts-split-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ts-border);
}
.ts-split-row:last-child { border-bottom: none; }

.ts-split-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--ts-text);
  cursor: pointer;
  flex: 1;
  min-width: 0;
}

.ts-split-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--ts-muted);
  white-space: nowrap;
}

.ts-split-input {
  width: 90px;
  padding: 7px 10px;
  border: 1.5px solid var(--ts-border);
  border-radius: 6px;
  background: var(--ts-bg);
  font-size: 14px;
  font-family: inherit;
  text-align: right;
  outline: none;
  -webkit-appearance: none;
  color: var(--ts-text);
  transition: border-color .15s;
}
.ts-split-input:focus { border-color: var(--ts-accent); background: white; }
.ts-pct-wrap { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ts-muted); }

/* ── Upload ────────────────────────────────────────────────── */
.ts-upload-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.ts-upload-name { font-size: 13px; color: var(--ts-muted); word-break: break-all; }

/* ── Empty state ───────────────────────────────────────────── */
.ts-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--ts-light);
}
.ts-empty-icon { font-size: 36px; margin-bottom: 12px; }
.ts-empty-text { font-size: 14px; }

/* ── All settled banner ────────────────────────────────────── */
.ts-all-settled {
  background: var(--ts-success-light);
  border: 1px solid #bbf7d0;
  border-radius: var(--ts-radius-sm);
  margin: 16px 20px;
  padding: 14px 16px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--ts-success);
}

/* ── Hint text ─────────────────────────────────────────────── */
.ts-hint  { font-size: 12px; color: var(--ts-muted); }
.ts-error { font-size: 13px; color: var(--ts-danger); margin-top: 6px; min-height: 18px; }

/* ── Mobile sticky bar ─────────────────────────────────────── */
.ts-mobile-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ts-surface);
  border-top: 1px solid var(--ts-border);
  padding: 12px 16px;
  display: flex;
  gap: 10px;
  z-index: 500;
  box-shadow: 0 -4px 16px rgba(0,0,0,.06);
}
.ts-mobile-bar .ts-btn { flex: 1; }

@media (min-width: 768px) {
  .ts-mobile-bar { display: none !important; }
}

/* Desktop add-expense button (hidden on mobile) */
.ts-desktop-only { display: none !important; }
@media (min-width: 768px) {
  .ts-desktop-only { display: inline-flex !important; }
}

/* Extra bottom padding on mobile so content isn't hidden by sticky bar */
.ts-group-wrap {
  padding-bottom: 80px;
}
@media (min-width: 768px) {
  .ts-group-wrap { padding-bottom: 40px; }
}

/* ── Modal tweaks ──────────────────────────────────────────── */
.modal-content {
  border: none;
  border-radius: var(--ts-radius);
  box-shadow: var(--ts-shadow-lg);
}
.modal-header {
  border-bottom: 1px solid var(--ts-border);
  padding: 16px 20px;
}
.modal-title { font-size: 16px; font-weight: 700; letter-spacing: -.2px; }
.modal-body  { padding: 20px; }
.modal-footer {
  border-top: 1px solid var(--ts-border);
  padding: 14px 20px;
}

/* ── Footer ────────────────────────────────────────────────── */
.ts-footer {
  border-top: 1px solid var(--ts-border);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: var(--ts-light);
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ts-border); border-radius: 3px; }