:root {
  --bg: #0b0d11;
  --panel: #171a21;
  --sidebar: #12141a;
  --border: #262b36;
  --text: #e6e8ec;
  --muted: #8b93a3;
  --accent: #4f8cff;
  --danger: #e5484d;
  --success: #2fb872;
  --warn: #e0a52c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
h1, h2, h3 { font-weight: 600; margin: 0 0 4px; letter-spacing: -0.01em; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2a2f3d; border-radius: 999px; border: 2px solid var(--sidebar); }
::-webkit-scrollbar-thumb:hover { background: #3a4056; }

button { font-family: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid rgba(79,140,255,0.5);
  outline-offset: 1px;
}

/* ---------- Layout ---------- */

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 264px;
  flex: 0 0 264px;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 18px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 6px 18px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.logo-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #7c5cff);
  box-shadow: 0 4px 14px rgba(79,140,255,0.28);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: #fff; font-size: 15px;
  flex-shrink: 0;
}
.brand-text { flex: 1; min-width: 0; }
.brand-name { font-size: 14px; font-weight: 700; letter-spacing: -0.01em; }
.brand-user { font-size: 12px; text-transform: capitalize; }

.logout-btn {
  flex-shrink: 0;
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.logout-btn:hover { color: var(--danger); border-color: rgba(229,72,77,0.4); background: rgba(229,72,77,0.08); }

.side-nav { display: flex; flex-direction: column; gap: 2px; margin-bottom: 18px; }
.side-nav-item {
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}
.side-nav-item:hover { background: rgba(255,255,255,0.05); }
.side-nav-item.active { background: var(--accent); color: #fff; box-shadow: 0 2px 10px rgba(79,140,255,0.35); }

.side-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0 10px;
  margin-bottom: 6px;
}
.chip-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  cursor: pointer;
}
.chip-btn:hover { color: var(--text); border-color: var(--accent); }

.company-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 8px;
}
.company-empty { padding: 8px 10px; font-size: 13px; }

.company-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: none;
  border: 1px solid transparent;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.company-item:hover { background: rgba(255,255,255,0.05); }
.company-item.active { background: rgba(79,140,255,0.12); border-color: rgba(79,140,255,0.3); }

.company-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: #232735;
  color: var(--text);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
  flex-shrink: 0;
}
.company-avatar.large { width: 48px; height: 48px; font-size: 18px; }

.company-item-text { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.company-item-name {
  font-size: 13.5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.company-item-balance { font-size: 11.5px; }

.overdue-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--danger);
  flex-shrink: 0;
}

.main {
  flex: 1;
  min-width: 0;
  padding: 28px 32px 64px;
  max-width: 1100px;
}

.page-header { margin-bottom: 20px; }
.page-header h1 { font-size: 22px; }
.company-header { display: flex; align-items: center; gap: 16px; }
.company-header h1 { margin-bottom: 2px; }

@media (max-width: 860px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; flex: none; height: auto; position: static; border-right: none; border-bottom: 1px solid var(--border); }
  .company-list { max-height: 220px; }
  .main { padding: 20px 16px 48px; }
}

/* ---------- Shared components ---------- */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2), 0 8px 24px rgba(0,0,0,0.18);
}
.card h3 { font-size: 14.5px; }

.grid { display: grid; gap: 16px; margin-bottom: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 720px) { .grid.cols-3 { grid-template-columns: 1fr; } }
.grid .card { margin-bottom: 0; }

.stat { text-align: center; }
.stat .value { font-size: 26px; font-weight: 700; }
.stat.danger .value { color: var(--danger); }
.stat.warn .value { color: var(--warn); }
.stat .label { color: var(--muted); font-size: 13px; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }
tr.row-link, td.row-link { cursor: pointer; }
tr.row-link:hover { background: rgba(255,255,255,0.03); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.badge.pending { background: rgba(224,165,44,0.15); color: var(--warn); }
.badge.overdue { background: rgba(229,72,77,0.15); color: var(--danger); }
.badge.paid { background: rgba(47,184,114,0.15); color: var(--success); }

.banner {
  background: rgba(229,72,77,0.1);
  border: 1px solid rgba(229,72,77,0.4);
  color: var(--danger);
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 14px;
}

button.primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(79,140,255,0.3);
  transition: background 0.15s ease, transform 0.1s ease;
}
button.primary:hover { background: #6b9dff; }
button.primary:active { transform: translateY(1px); }
button.small { padding: 5px 10px; font-size: 13px; border-radius: 6px; }

form.inline { display: flex; gap: 8px; flex-wrap: wrap; align-items: end; margin-bottom: 16px; }
form.inline label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }
form.form-stack { display: flex; flex-direction: column; gap: 12px; }
form.form-stack label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }

button.ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
button.ghost:hover { border-color: #3a4056; }

/* ---------- New company form ---------- */

.new-company-form { max-width: 520px; }
.form-section { padding: 16px 0; border-bottom: 1px solid var(--border); }
.form-section:first-of-type { padding-top: 2px; }
.form-section:last-of-type { border-bottom: none; padding-bottom: 4px; }
.form-section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 12px;
}
.new-company-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}
.new-company-form input, .new-company-form textarea { width: 100%; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; padding-top: 16px; }

/* ---------- Contract form ---------- */

.contract-form .form-row { margin-bottom: 12px; grid-template-columns: repeat(3, 1fr); }
.contract-form label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }
.contract-form .form-hint { font-size: 12.5px; margin: 4px 0 12px; min-height: 16px; }
.contract-form .form-actions { padding-top: 0; justify-content: flex-start; }

input, select, textarea {
  background: #0c0e12;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s ease;
}
input:hover, select:hover, textarea:hover { border-color: #38404f; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); outline: none; }
textarea { resize: vertical; }

/* ---------- Login ---------- */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 20% 15%, rgba(79,140,255,0.10), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(124,92,255,0.10), transparent 45%),
    var(--bg);
  padding: 20px;
}
.login-box {
  width: 100%;
  max-width: 360px;
  padding: 32px 28px;
  border-radius: 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3), 0 20px 60px rgba(0,0,0,0.4);
}
.login-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.login-brand .logo-mark { width: 38px; height: 38px; font-size: 16px; }
.login-brand h2 { font-size: 17px; margin: 0; }
.login-brand p { margin: 2px 0 0; font-size: 12.5px; }
.login-box label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.login-box .field { margin-bottom: 14px; }
.login-box button.primary { margin-top: 6px; }

.error { color: var(--danger); font-size: 13px; margin-top: 10px; }
.muted { color: var(--muted); }