/* ── Reset & Base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #1a1a2e;
  --accent: #e94560;
  --accent-hover: #d63851;
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1a1a2e;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* ── Login ──────────────────────────────────────────────────────────────── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--card);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-card h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.login-card .subtitle {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

/* ── Forms ──────────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 1rem;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-light);
}

input, select, textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
  width: 100%;
  justify-content: center;
  padding: 0.65rem 1rem;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: var(--primary);
  color: white;
}
.btn-secondary:hover { opacity: 0.9; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { background: var(--bg); }

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-sm {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

/* ── Layout ────────────────────────────────────────────────────────────── */
.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--primary);
  color: white;
  padding: 1.5rem 0;
  flex-shrink: 0;
}

.sidebar h2 {
  font-size: 1rem;
  padding: 0 1.25rem;
  margin-bottom: 0.25rem;
}

.sidebar .subtitle {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  padding: 0 1.25rem;
  margin-bottom: 1.5rem;
}

.sidebar nav a {
  display: block;
  padding: 0.6rem 1.25rem;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.sidebar nav a:hover,
.sidebar nav a.active {
  background: rgba(255,255,255,0.1);
  color: white;
}

.sidebar .logout {
  margin-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 0.5rem;
}

.main {
  flex: 1;
  padding: 1.5rem 2rem;
  overflow-x: auto;
}

.main h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

/* ── Toolbar ───────────────────────────────────────────────────────────── */
.toolbar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.toolbar select, .toolbar input {
  width: auto;
  min-width: 120px;
}

/* ── Tables ────────────────────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

th, td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}

th {
  background: var(--bg);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafafa; }

/* ── Status Badges ─────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-draft { background: #e5e7eb; color: #374151; }
.badge-confirmed { background: #dbeafe; color: #1d4ed8; }
.badge-invoiced { background: #fef3c7; color: #92400e; }
.badge-paid { background: #d1fae5; color: #065f46; }

/* ── Cards ─────────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  margin-bottom: 1rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.stat-card .label {
  font-size: 0.8rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-card .value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

/* ── Modal ─────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}

.modal h3 {
  margin-bottom: 1rem;
}

.modal .actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1rem;
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .app { flex-direction: column; }
  .sidebar {
    width: 100%;
    padding: 1rem 0;
  }
  .sidebar nav { display: flex; overflow-x: auto; }
  .sidebar nav a { white-space: nowrap; }
  .main { padding: 1rem; }
  .stats { grid-template-columns: 1fr 1fr; }
}

/* ── Utilities ─────────────────────────────────────────────────────────── */
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.hidden { display: none !important; }
.mono { font-family: 'SF Mono', Monaco, monospace; font-size: 0.85rem; }