/* ── PayTrack · Global Styles · Light Theme ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg:        #f4f6f9;
  --surface:   #ffffff;
  --card:      #ffffff;
  --border:    #e2e6ed;
  --border2:   #cdd3dc;
  --accent:    #2563eb;
  --accent-lt: #eff4ff;
  --accent2:   #059669;
  --accent2-lt:#ecfdf5;
  --danger:    #dc2626;
  --danger-lt: #fef2f2;
  --warn:      #d97706;
  --warn-lt:   #fffbeb;
  --void:      #7c3aed;
  --void-lt:   #f5f3ff;
  --text:      #111827;
  --text2:     #374151;
  --muted:     #6b7280;
  --muted2:    #9ca3af;
  --mono:      'JetBrains Mono', monospace;
  --sans:      'Inter', sans-serif;
  --shadow:    0 1px 4px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.07);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* HEADER */
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; height: 56px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow-sm);
}
.logo { font-size: 1.1rem; font-weight: 800; letter-spacing: -.03em; color: var(--text); }
.logo span { color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 16px; }
.header-date { font-family: var(--mono); font-size: .72rem; color: var(--muted); }

/* PERIOD SELECTOR */
.period-selector { display: flex; align-items: center; gap: 7px; }
.period-selector label { font-size: .75rem; font-weight: 600; color: var(--muted); }
.period-selector select {
  background: var(--bg); border: 1px solid var(--border2); color: var(--text);
  border-radius: 7px; padding: 5px 10px; font-family: var(--sans); font-size: .8rem; font-weight: 500;
  outline: none; cursor: pointer; transition: border .15s;
}
.period-selector select:focus { border-color: var(--accent); }

/* LAYOUT */
.shell { display: grid; grid-template-columns: 210px 1fr; flex: 1; min-height: calc(100vh - 56px); }

/* SIDEBAR */
aside {
  background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 16px 10px; gap: 2px;
  position: sticky; top: 56px; height: calc(100vh - 56px); overflow-y: auto;
}
.nav-label { font-size: .65rem; font-weight: 700; color: var(--muted2); letter-spacing: .1em; text-transform: uppercase; padding: 10px 10px 4px; }
.nav-btn {
  background: none; border: none; color: var(--muted); text-align: left;
  padding: 9px 12px; border-radius: 8px; cursor: pointer;
  font-family: var(--sans); font-size: .84rem; font-weight: 500;
  display: flex; align-items: center; gap: 9px; transition: all .12s; width: 100%;
}
.nav-btn:hover { background: var(--bg); color: var(--text); }
.nav-btn.active { background: var(--accent-lt); color: var(--accent); font-weight: 600; }
.nav-icon { font-size: .95rem; width: 18px; text-align: center; flex-shrink: 0; }

/* MAIN */
main { padding: 28px 32px; background: var(--bg); overflow-y: auto; }

/* PAGE */
.page { display: none; animation: fadeIn .15s ease; }
.page.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 10px; }
.page-title { font-size: 1.35rem; font-weight: 800; color: var(--text); letter-spacing: -.02em; }
.page-title em { font-style: normal; color: var(--accent); }

/* KPI CARDS */
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 22px; }
.kpi {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px; box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
}
.kpi::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent); }
.kpi.green::before  { background: var(--accent2); }
.kpi.red::before    { background: var(--danger); }
.kpi.purple::before { background: var(--void); }
.kpi-label { font-size: .72rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }
.kpi-value { font-size: 1.4rem; font-weight: 800; color: var(--text); letter-spacing: -.02em; line-height: 1.1; }
.kpi-sub   { font-size: .72rem; color: var(--muted); margin-top: 4px; }

/* TOOLBAR */
.toolbar { display: flex; gap: 8px; margin-bottom: 14px; align-items: center; flex-wrap: wrap; }
.search-wrap { position: relative; flex: 1; min-width: 180px; max-width: 280px; }
.search-wrap input {
  width: 100%; background: var(--surface); border: 1px solid var(--border2); color: var(--text);
  border-radius: 8px; padding: 8px 12px 8px 32px; font-family: var(--sans); font-size: .83rem;
  outline: none; transition: border .15s; box-shadow: var(--shadow-sm);
}
.search-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--muted2); }

/* TABLE */
.table-wrap { background: var(--card); border: 1px solid var(--border); border-radius: 12px; overflow-x: auto; box-shadow: var(--shadow-sm); }
table { width: 100%; border-collapse: collapse; min-width: 540px; }
thead tr { background: var(--bg); border-bottom: 1px solid var(--border); }
th { padding: 10px 14px; text-align: left; font-size: .72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }
td { padding: 11px 14px; font-size: .84rem; border-bottom: 1px solid var(--border); color: var(--text2); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #f8fafc; }
tr.voided td { opacity: .55; }
tr.voided { text-decoration: line-through; }
.totals-row td { background: var(--bg) !important; font-weight: 700; font-size: .83rem; border-top: 2px solid var(--border2) !important; border-bottom: none !important; }

/* BADGES */
.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: .71rem; font-weight: 600; white-space: nowrap; }
.badge-green  { background: var(--accent2-lt); color: #065f46; }
.badge-yellow { background: var(--warn-lt);    color: #92400e; }
.badge-red    { background: var(--danger-lt);  color: #991b1b; }
.badge-purple { background: var(--void-lt);    color: #5b21b6; }
.badge-blue   { background: var(--accent-lt);  color: #1d4ed8; }
.badge-void   { background: #f3f4f6; color: var(--muted); }

/* AMOUNTS */
.amount { font-family: var(--mono); font-size: .82rem; }
.pos { color: #065f46; font-weight: 600; }
.neg { color: var(--danger); font-weight: 600; }

/* BUTTONS */
.btn {
  padding: 8px 14px; border-radius: 8px; border: none; cursor: pointer;
  font-family: var(--sans); font-weight: 600; font-size: .82rem;
  transition: all .12s; display: inline-flex; align-items: center; gap: 5px; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 1px 3px rgba(37,99,235,.25); }
.btn-primary:hover { background: #1d4ed8; }
.btn-ghost   { background: var(--surface); color: var(--text2); border: 1px solid var(--border2); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { background: var(--bg); }
.btn-danger  { background: var(--danger-lt); color: var(--danger); border: 1px solid #fecaca; }
.btn-danger:hover { background: #fee2e2; }
.btn-warn    { background: var(--warn-lt); color: var(--warn); border: 1px solid #fde68a; }
.btn-warn:hover { background: #fef3c7; }
.btn-void    { background: var(--void-lt); color: var(--void); border: 1px solid #ddd6fe; }
.btn-void:hover { background: #ede9fe; }
.btn-sm { padding: 4px 9px; font-size: .73rem; border-radius: 6px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.actions { display: flex; gap: 4px; flex-wrap: wrap; }

/* AVATAR */
.avatar { width: 34px; height: 34px; border-radius: 9px; display: flex; align-items: center; justify-content: center; font-size: .78rem; font-weight: 700; flex-shrink: 0; }

/* MODAL */
.overlay {
  position: fixed; inset: 0; background: rgba(17,24,39,.4); z-index: 200;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .18s;
}
.overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px; width: 460px; max-width: 95vw; max-height: 90vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.15);
  transform: scale(.96) translateY(8px); transition: transform .18s, opacity .18s; opacity: 0;
}
.overlay.open .modal { transform: scale(1) translateY(0); opacity: 1; }
.modal-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 20px; }
.modal-subtitle { font-size: .8rem; color: var(--muted); margin-top: -14px; margin-bottom: 16px; }

.field { margin-bottom: 13px; }
.field label { display: block; font-size: .75rem; font-weight: 600; color: var(--muted); margin-bottom: 5px; }
.field input, .field select {
  width: 100%; background: var(--bg); border: 1px solid var(--border2); color: var(--text);
  border-radius: 8px; padding: 8px 11px; font-family: var(--sans); font-size: .84rem;
  outline: none; transition: border .15s, box-shadow .15s;
}
.field input:focus, .field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.field select option { background: var(--surface); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }

/* TIMELINE */
.timeline { display: flex; flex-direction: column; }
.tl-item { display: flex; gap: 12px; position: relative; padding-bottom: 14px; }
.tl-item::before { content:''; position:absolute; left:12px; top:26px; bottom:0; width:1px; background:var(--border); }
.tl-item:last-child::before { display: none; }
.tl-dot { width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: .68rem; font-weight: 700; margin-top: 2px; }
.tl-dot.credit { background: var(--accent2-lt); color: var(--accent2); }
.tl-dot.debit  { background: var(--warn-lt);    color: var(--warn); }
.tl-dot.deduct { background: var(--danger-lt);  color: var(--danger); }
.tl-dot.voided { background: #f3f4f6; color: var(--muted); }
.tl-body { flex: 1; min-width: 0; }
.tl-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.tl-title { font-weight: 600; font-size: .84rem; color: var(--text); }
.tl-amount { font-family: var(--mono); font-size: .84rem; font-weight: 600; white-space: nowrap; }
.tl-meta { font-size: .72rem; color: var(--muted); margin-top: 2px; }

/* BALANCE CARD */
.balance-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; margin-bottom: 10px; box-shadow: var(--shadow-sm); }
.bc-top { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.bc-info { flex: 1; }
.bc-info h3 { font-size: .9rem; font-weight: 700; color: var(--text); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.bc-info p  { font-size: .74rem; color: var(--muted); margin-top: 1px; }
.bc-meta { text-align: right; flex-shrink: 0; }
.bc-balance { font-family: var(--mono); font-size: 1rem; font-weight: 700; }
.bc-base { font-size: .72rem; color: var(--muted); margin-top: 1px; }
.progress-bar { height: 4px; background: var(--border); border-radius: 3px; overflow: hidden; margin-bottom: 10px; }
.progress-fill { height: 100%; border-radius: 3px; transition: width .5s ease; }
.mini-tx { display: flex; flex-direction: column; gap: 4px; }
.mini-tx-row { display: flex; justify-content: space-between; align-items: center; padding: 5px 10px; background: var(--bg); border-radius: 6px; font-size: .79rem; border: 1px solid var(--border); }

/* EMPTY */
.empty { text-align: center; padding: 36px; color: var(--muted); }
.empty-icon { font-size: 1.8rem; margin-bottom: 8px; }
.empty-text { font-size: .84rem; }

/* TOAST */
#toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  border-radius: 10px; padding: 11px 16px; font-size: .84rem; font-weight: 600;
  box-shadow: var(--shadow); transform: translateY(16px); opacity: 0; transition: all .2s;
  display: flex; align-items: center; gap: 7px; color: #fff;
}
#toast.show { transform: none; opacity: 1; }
#toast.success { background: #064e3b; }
#toast.error   { background: #7f1d1d; }

/* SPINNER */
.spinner { width: 13px; height: 13px; border: 2px solid rgba(255,255,255,.3); border-top-color: #fff; border-radius: 50%; animation: spin .6s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* FILTER SELECT */
.filter-select {
  background: var(--surface); border: 1px solid var(--border2); color: var(--text);
  border-radius: 8px; padding: 8px 12px; font-family: var(--sans); font-size: .82rem; font-weight: 500;
  outline: none; cursor: pointer; box-shadow: var(--shadow-sm);
}
.filter-select:focus { border-color: var(--accent); }

/* SCROLLBAR */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  aside { position: relative; height: auto; flex-direction: row; flex-wrap: wrap; padding: 8px; top: 0; }
  .nav-label { display: none; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  main { padding: 16px; }
}