:root {
  --font: "DM Sans", "Segoe UI", system-ui, sans-serif;
  --radius: 14px;
  --radius-pill: 999px;
  --transition: 180ms ease;
}

[data-theme="dark"] {
  --bg: #050505;
  --bg-elevated: rgba(18, 18, 18, 0.82);
  --bg-card: rgba(22, 22, 22, 0.9);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f5f5f5;
  --text-muted: #9a9a9a;
  --accent: #3dd6c6;
  --accent-soft: rgba(61, 214, 198, 0.18);
  --glow: rgba(45, 180, 170, 0.35);
  --primary-btn-bg: #ffffff;
  --primary-btn-text: #0a0a0a;
  --danger: #ff6b6b;
  --success: #3dd68c;
  --warning: #f0c14b;
  --sidebar: rgba(10, 10, 10, 0.92);
  --input-bg: rgba(255, 255, 255, 0.04);
  --star: rgba(255, 255, 255, 0.55);
}

[data-theme="light"] {
  --bg: #f3f5f7;
  --bg-elevated: rgba(255, 255, 255, 0.92);
  --bg-card: #ffffff;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --text: #121212;
  --text-muted: #5f6368;
  --accent: #0d9488;
  --accent-soft: rgba(13, 148, 136, 0.12);
  --glow: rgba(13, 148, 136, 0.2);
  --primary-btn-bg: #111111;
  --primary-btn-text: #ffffff;
  --danger: #dc2626;
  --success: #059669;
  --warning: #d97706;
  --sidebar: rgba(255, 255, 255, 0.95);
  --input-bg: rgba(0, 0, 0, 0.03);
  --star: rgba(0, 0, 0, 0.15);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }

.app-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 50% 35%, var(--glow), transparent 70%),
    var(--bg);
  overflow: hidden;
}
.app-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--star) 0.7px, transparent 0.7px);
  background-size: 48px 48px;
  opacity: 0.35;
  pointer-events: none;
}

/* Login */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  position: relative;
}
.login-card {
  width: min(420px, 100%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px 32px 28px;
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 80px rgba(0,0,0,0.35);
  animation: rise 0.55s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 22px;
}
.login-logo img {
  height: 36px;
  width: auto;
  filter: drop-shadow(0 0 18px rgba(61, 214, 198, 0.25));
}
[data-theme="light"] .login-logo img {
  filter: brightness(0.1);
}
.login-card h1 {
  margin: 0 0 6px;
  font-size: 1.45rem;
  text-align: center;
  letter-spacing: -0.02em;
}
.login-card .subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0 0 24px;
}
.login-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 18px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.login-note {
  margin-top: 16px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Forms */
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea.form-control { min-height: 110px; resize: vertical; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 11px 18px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--primary-btn-bg);
  color: var(--primary-btn-text);
  width: 100%;
}
.btn-primary:hover { opacity: 0.92; }
.btn-outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 7px 12px; font-size: 0.8rem; }
.btn-ghost {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 10px;
}
.btn-ghost:hover { color: var(--text); }

.alert {
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  border: 1px solid var(--border);
}
.alert-error { background: rgba(255,107,107,0.12); color: var(--danger); }
.alert-success { background: rgba(61,214,140,0.12); color: var(--success); }

/* App shell */
.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.sidebar {
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 8px;
  backdrop-filter: blur(12px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px 18px;
}
.brand img { height: 26px; width: auto; }
[data-theme="light"] .brand img { filter: brightness(0.12); }
.brand span {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 0.95rem;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: background var(--transition), color var(--transition);
}
.nav-link:hover, .nav-link.active {
  background: var(--accent-soft);
  color: var(--text);
}
.nav-link .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.sidebar-foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.main {
  padding: 20px 24px 40px;
  min-width: 0;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.topbar h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
}
.badge {
  display: inline-flex;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--accent);
  color: #041412;
  font-size: 0.7rem;
  font-weight: 700;
  align-items: center;
  justify-content: center;
}

.grid-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  animation: rise 0.45s ease both;
}
.stat-card .label { color: var(--text-muted); font-size: 0.8rem; }
.stat-card .value { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.04em; margin-top: 4px; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.card h2, .card h3 {
  margin: 0 0 14px;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data th { color: var(--text-muted); font-weight: 500; font-size: 0.78rem; }
.status {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  border: 1px solid var(--border);
}
.status-pending, .status-open, .status-new { color: var(--warning); }
.status-paid, .status-approved, .status-done, .status-accepted { color: var(--success); }
.status-rejected, .status-cancelled, .status-overdue { color: var(--danger); }
.status-in_progress, .status-reviewing { color: var(--accent); }

.bank-box {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
  background: var(--input-bg);
}
.bank-box .iban {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
  word-break: break-all;
}
.copy-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.mobile-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 10px;
  padding: 8px 12px;
}
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 40;
}

@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 50;
    width: min(280px, 86vw);
    transform: translateX(-105%);
    transition: transform 0.25s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.show { display: block; }
  .mobile-toggle { display: inline-flex; }
  .grid-stats { grid-template-columns: 1fr 1fr; }
  .main { padding: 16px; }
}
@media (max-width: 520px) {
  .grid-stats { grid-template-columns: 1fr; }
}