/* ===========================================================
   Client Tracker — glossy black & white theme
   Palette: #08080a bg / #condition surfaces / warm-white text
   Type: Archivo (display) + Manrope (ui) + IBM Plex Mono (data)
   =========================================================== */

:root {
  --bg: #08080a;
  --bg-radial: radial-gradient(1200px 600px at 15% -10%, #1c1c22 0%, #08080a 55%);
  --surface: #131316;
  --surface-2: #1a1a1e;
  --surface-3: #202024;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.22);
  --sheen: rgba(255, 255, 255, 0.06);
  --text: #f3f3ef;
  --text-dim: #9d9da5;
  --text-faint: #616168;
  --accent: #ffffff;
  --accent-ink: #0a0a0c;
  --good: #7fd9a8;
  --good-bg: rgba(127, 217, 168, 0.12);
  --warn: #eec27a;
  --warn-bg: rgba(238, 194, 122, 0.12);
  --bad: #ef8b93;
  --bad-bg: rgba(239, 139, 147, 0.12);
  --shadow-lift: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
  --radius: 14px;
  --radius-sm: 9px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg-radial), var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display {
  font-family: 'Archivo', 'Manrope', sans-serif;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.mono, .num {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
}

a { color: inherit; }

button {
  font-family: inherit;
  cursor: pointer;
}

::selection { background: rgba(255,255,255,0.22); }

/* -------- Glossy surface primitive -------- */
.panel {
  position: relative;
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift), inset 0 1px 0 rgba(255,255,255,0.05);
  overflow: hidden;
}
.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(480px 160px at 12% -20%, var(--sheen), transparent 60%);
  pointer-events: none;
}

/* -------- Buttons -------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface-3);
  color: var(--text);
  padding: 10px 18px;
  font-size: 13.5px;
  font-weight: 600;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.btn:hover { border-color: rgba(255,255,255,0.4); background: #26262b; }
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(180deg, #ffffff 0%, #d8d8dd 55%, #c3c3c9 100%);
  color: var(--accent-ink);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 8px 20px -8px rgba(255,255,255,0.25);
}
.btn-primary:hover { filter: brightness(1.04); }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-dim);
}
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); }
.btn-danger { color: var(--bad); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; font-size: 12.5px; }
.btn-icon { padding: 8px; border-radius: 10px; }

/* -------- Inputs -------- */
label { font-size: 12.5px; color: var(--text-dim); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
input, select {
  width: 100%;
  background: var(--surface-3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus {
  outline: none;
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.08);
}
.field { display: flex; flex-direction: column; gap: 6px; }

/* =========================================================
   LOGIN / SETUP SCREEN
   ========================================================= */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 400px;
  padding: 36px 32px 32px;
}
.auth-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
}
.auth-brand .mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(145deg,#fff,#9a9aa0);
  box-shadow: 0 6px 16px -6px rgba(255,255,255,0.4);
}
.auth-brand .name { font-weight: 800; font-size: 16px; letter-spacing: -0.01em; }
.auth-brand .sub { font-size: 11px; color: var(--text-faint); letter-spacing: 0.08em; text-transform: uppercase; }
.auth-card h1 { font-size: 22px; margin: 0 0 4px; }
.auth-card p.lead { color: var(--text-dim); font-size: 13.5px; margin: 0 0 24px; }
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-error {
  background: var(--bad-bg);
  border: 1px solid rgba(239,139,147,0.35);
  color: var(--bad);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: none;
}
.auth-error.show { display: block; }
.auth-foot { margin-top: 18px; font-size: 12px; color: var(--text-faint); text-align: center; }

/* =========================================================
   APP SHELL
   ========================================================= */
.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(8,8,10,0.86);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.app-header-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .mark { width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(145deg,#fff,#9a9aa0); }
.brand .name { font-weight: 800; font-size: 15px; }
.brand .sub { font-size: 10.5px; color: var(--text-faint); letter-spacing: 0.08em; text-transform: uppercase; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.user-chip {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px;
}
.user-chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--good); box-shadow: 0 0 8px var(--good); }

.container { max-width: 1360px; margin: 0 auto; padding: 28px 24px 80px; }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.month-select-wrap { display: flex; align-items: center; gap: 10px; }
.month-select-wrap select { width: auto; min-width: 190px; font-weight: 600; }
.toolbar-right { display: flex; gap: 10px; flex-wrap: wrap; }

/* -------- KPI cards -------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.kpi {
  padding: 18px 20px;
}
.kpi .label { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-faint); margin-bottom: 10px; }
.kpi .value { font-size: 26px; font-weight: 600; }
.kpi .sub { margin-top: 6px; font-size: 12px; color: var(--text-dim); }
.kpi.accent .value { background: linear-gradient(180deg,#fff,#b8b8be); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* -------- Charts -------- */
.chart-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 14px;
  margin-bottom: 22px;
}
.chart-card { padding: 20px 20px 12px; }
.chart-card h3 { font-size: 14px; margin: 0 0 2px; }
.chart-card .hint { font-size: 12px; color: var(--text-faint); margin: 0 0 14px; }
.chart-canvas-wrap { position: relative; height: 240px; }
.legend-row { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 12px; font-size: 12px; color: var(--text-dim); }
.legend-row .sw { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }

/* -------- Table -------- */
.table-card { padding: 0; }
.table-head-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 18px 20px; border-bottom: 1px solid var(--border); flex-wrap: wrap;
}
.table-head-row h3 { margin: 0; font-size: 15px; }
.search-wrap { position: relative; }
.search-wrap input { width: 220px; padding-left: 32px; }
.search-wrap svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); opacity: 0.5; }

.table-scroll { overflow-x: auto; }
table.tracker { width: 100%; border-collapse: collapse; min-width: 920px; }
table.tracker th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-faint); font-weight: 600; padding: 10px 16px; border-bottom: 1px solid var(--border);
  white-space: nowrap; cursor: pointer; user-select: none;
}
table.tracker th:hover { color: var(--text-dim); }
table.tracker td {
  padding: 12px 16px; font-size: 13.5px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.tracker tbody tr { transition: background 0.15s ease; }
table.tracker tbody tr:hover { background: rgba(255,255,255,0.03); }
table.tracker td.name { font-weight: 600; }
table.tracker td.right { text-align: right; }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.02em;
}
.pill.paid { background: var(--good-bg); color: var(--good); }
.pill.partial { background: var(--warn-bg); color: var(--warn); }
.pill.unpaid { background: var(--bad-bg); color: var(--bad); }
.pill.status-active { background: rgba(255,255,255,0.08); color: var(--text-dim); }

.row-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; border: 1px solid var(--border); background: transparent; color: var(--text-dim);
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: rgba(255,255,255,0.05); }

.empty-state { padding: 60px 20px; text-align: center; color: var(--text-faint); }
.empty-state h3 { color: var(--text-dim); margin-bottom: 6px; }

/* -------- Modal -------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.modal {
  width: 100%; max-width: 460px; padding: 26px 26px 22px;
}
.modal h2 { font-size: 17px; margin: 0 0 4px; }
.modal p.hint { color: var(--text-dim); font-size: 12.5px; margin: 0 0 18px; }
.modal-form { display: flex; flex-direction: column; gap: 14px; }
.modal-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.checkbox-row label { text-transform: none; letter-spacing: 0; font-size: 13.5px; color: var(--text); }

.users-list { display: flex; flex-direction: column; gap: 8px; margin: 16px 0; max-height: 260px; overflow-y: auto; }
.users-list .row { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-3); }
.users-list .who { font-size: 13.5px; }
.users-list .who .role { color: var(--text-faint); font-size: 11.5px; text-transform: uppercase; margin-left: 8px; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--surface-3); border: 1px solid var(--border-strong); color: var(--text);
  padding: 12px 18px; border-radius: 999px; font-size: 13px; box-shadow: var(--shadow-lift);
  opacity: 0; pointer-events: none; transition: all 0.25s ease; z-index: 80;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: rgba(239,139,147,0.5); color: var(--bad); }

@media (max-width: 860px) {
  .chart-row { grid-template-columns: 1fr; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-right { justify-content: flex-start; }
  .modal-row { grid-template-columns: 1fr; }
}

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