* { box-sizing: border-box; }

:root {
  --bg: #070b14;
  --panel: #0d1424;
  --panel-2: #111a2e;
  --ring: rgba(255, 255, 255, 0.08);
  --ring-strong: rgba(255, 255, 255, 0.14);
  --text: #e6e9f2;
  --muted: #8b93a7;
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
}

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

body { overflow: hidden; }

#app { height: 100%; display: flex; flex-direction: column; min-height: 0; }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 17px;
  user-select: none;
  white-space: nowrap;
}
.logo .dot {
  width: 14px; height: 14px; border-radius: 50%;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.25);
}
.logo small {
  font-weight: 500;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-left: 2px;
}

/* ---------- login ---------- */
.login {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow-y: auto;
  background:
    radial-gradient(700px 360px at 12% -6%, rgba(99, 102, 241, 0.22), transparent 60%),
    radial-gradient(600px 320px at 88% 108%, rgba(139, 92, 246, 0.18), transparent 60%),
    var(--bg);
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--panel);
  border: 1px solid var(--ring);
  border-radius: 16px;
  padding: 28px;
  display: grid;
  gap: 14px;
}
.login-card .logo { justify-content: center; margin-bottom: 6px; }
.login-card h1 { font-size: 20px; margin: 0; text-align: center; }
.login-card p { color: var(--muted); text-align: center; margin: 0; }
.login-card .err { color: var(--red); font-size: 13px; text-align: center; min-height: 16px; }

input, select, textarea {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--ring-strong);
  border-radius: 10px;
  padding: 9px 12px;
  font: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.18);
}
input::placeholder, textarea::placeholder { color: #5c6273; }
textarea { resize: vertical; min-height: 64px; }
input[type="checkbox"] { width: auto; accent-color: var(--accent); }

label { display: grid; gap: 6px; font-size: 12px; color: var(--muted); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
label.wide { grid-column: 1 / -1; }

.btn {
  border: 0;
  cursor: pointer;
  border-radius: 10px;
  padding: 9px 14px;
  font: inherit;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  white-space: nowrap;
  transition: opacity 0.15s, transform 0.05s, filter 0.15s;
}
.btn:hover:not(:disabled) { filter: brightness(1.08); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--ring-strong);
}
.btn.ghost:hover:not(:disabled) { color: var(--text); border-color: var(--ring-strong); filter: none; }
.btn.small { padding: 6px 11px; font-size: 12px; border-radius: 9px; }
.btn.mini {
  padding: 4px 9px;
  font-size: 11px;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--ring-strong);
}
.btn.mini:hover:not(:disabled) { color: var(--text); border-color: var(--accent); filter: none; }
.btn.danger:hover:not(:disabled) { border-color: var(--red); color: var(--red); }

/* ---------- app shell ---------- */
header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 20px;
  border-bottom: 1px solid var(--ring);
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 5;
  flex: 0 0 auto;
}
.stats { display: flex; gap: 8px; flex-wrap: wrap; }
.stat {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--ring);
  color: var(--muted);
  font-size: 12px;
  background: var(--panel);
  white-space: nowrap;
}
.stat b { color: var(--text); font-weight: 700; margin-right: 4px; }
.stat.warn b { color: var(--amber); }

.layout {
  flex: 1;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  min-height: 0;
}

/* ---------- sidebar ---------- */
.sidebar {
  border-right: 1px solid var(--ring);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  overflow: hidden;
}
.sidebar .row { display: flex; gap: 8px; }
.sidebar .row input { flex: 1 1 auto; width: 100%; min-width: 0; }
.sidebar .row .btn { flex: 0 0 auto; }
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--ring);
  color: var(--muted);
  cursor: pointer;
  background: transparent;
}
.chip:hover { color: var(--text); border-color: var(--ring-strong); }
.chip.on { color: #fff; border-color: var(--accent); background: rgba(99, 102, 241, 0.25); }

.filter-group { display: grid; gap: 6px; }
.filter-label {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-list { overflow-y: auto; display: grid; gap: 6px; flex: 1; min-height: 0; align-content: start; }
.contact-row {
  background: var(--panel);
  border: 1px solid var(--ring);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  display: grid;
  gap: 4px;
  position: relative;
}
.contact-row:hover { border-color: var(--ring-strong); background: var(--panel-2); }
.contact-row.sel { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.4) inset; }
.contact-row .name { font-weight: 600; display: flex; align-items: center; gap: 8px; word-break: break-word; }
.contact-row .company { color: var(--muted); font-size: 12px; word-break: break-word; }
.contact-row .meta { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 11px; color: var(--muted); }
.contact-row .meta .right { display: flex; align-items: center; gap: 6px; min-width: 0; }
.contact-row .due { color: var(--amber); }
.contact-row .due.over { color: var(--red); font-weight: 600; }

.badge {
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
  background: rgba(99, 102, 241, 0.18);
  color: #a5b4fc;
  white-space: nowrap;
}
.badge.customer { background: rgba(52, 211, 153, 0.15); color: var(--green); }
.badge.form { background: rgba(251, 191, 36, 0.15); color: var(--amber); }

/* ---------- detail panel ---------- */
.panel { padding: 22px; overflow-y: auto; min-height: 0; }
.panel.empty { display: grid; place-items: center; color: var(--muted); }

.detail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.detail-head h2 { margin: 0 0 2px; font-size: 22px; letter-spacing: -0.02em; word-break: break-word; }
.detail-head .sub { color: var(--muted); word-break: break-word; }

.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; margin-top: 18px; }
.field-grid .wide { grid-column: 1 / -1; }

.form-note {
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  margin-top: 14px;
  line-height: 1.5;
  word-break: break-word;
}
.row-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.row-actions label {
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: none;
  font-weight: 600;
  color: var(--text);
  min-width: 0;
}
.row-actions label input[type="checkbox"] { width: auto; accent-color: var(--accent); }
.row-actions label input[type="date"] { width: auto; }
.row-actions .spacer { flex: 1 1 8px; }

.section { margin-top: 26px; }
.section > h3 {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section > h3 .spacer { flex: 1; }

.events { display: grid; gap: 8px; }
.event {
  background: var(--panel);
  border: 1px solid var(--ring);
  border-radius: 12px;
  padding: 10px 12px;
  display: grid;
  gap: 3px;
}
.event .top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.event .kind { font-weight: 600; text-transform: capitalize; }
.event .when { font-size: 12px; color: var(--muted); }
.event .note { color: var(--muted); font-size: 13px; word-break: break-word; white-space: pre-wrap; }
.event .del {
  background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 13px; padding: 2px 6px; border-radius: 6px;
}
.event .del:hover { color: var(--red); background: rgba(248, 113, 113, 0.1); }

.add-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 10px; }
.add-row > * { width: auto !important; flex: 0 0 auto; }
.add-row select { width: auto; padding: 8px 10px; }
.add-row input[type="date"] { width: 140px; }
.add-row input[type="number"] { width: 110px; }
.add-row input[type="text"] { flex: 1 1 180px; width: 100%; }
.add-row .btn { flex: 0 0 auto; }

/* ---------- invoices ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ring);
  border-radius: 12px;
  background: var(--panel);
}
table.invoices { width: 100%; border-collapse: collapse; min-width: 560px; }
table.invoices th, table.invoices td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--ring); font-size: 13px; }
table.invoices tr:last-child td { border-bottom: 0; }
table.invoices th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; }
table.invoices select {
  width: auto;
  padding: 4px 8px;
  font-size: 12px;
  border-radius: 8px;
  background: var(--bg);
}
table.invoices .status-paid { color: var(--green); font-weight: 600; }
table.invoices .status-overdue { color: var(--red); font-weight: 600; }
table.invoices .status-draft { color: var(--amber); }
.amount { font-variant-numeric: tabular-nums; font-weight: 600; white-space: nowrap; }
.void { opacity: 0.5; }
.inv-actions { display: flex; gap: 6px; align-items: center; white-space: nowrap; }

.empty-hint { color: var(--muted); padding: 12px 0; }

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  max-width: min(420px, calc(100vw - 40px));
  background: #0f172a;
  border: 1px solid var(--ring-strong);
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}
.toast.err { border-color: rgba(248, 113, 113, 0.5); }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--ring); max-height: 42vh; }
  .field-grid { grid-template-columns: 1fr; }
  .panel { padding: 16px; }
  .add-row input[type="text"] { flex-basis: 100%; }
}