:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app { max-width: 900px; margin: 0 auto; padding: 20px; }

.header {
  text-align: center;
  margin-bottom: 24px;
}
.header h1 { font-size: 1.8rem; color: var(--primary); }
.header .subtitle { color: var(--text-muted); font-size: 0.95rem; margin-top: 4px; }

.main {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.grid2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: transform .1s, box-shadow .1s;
  background: var(--surface);
}
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.card h3 { margin-bottom: 8px; color: var(--primary); }
.card p { color: var(--text-muted); font-size: 0.9rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  background: var(--primary);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  transition: background .2s;
}
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #e5e7eb; color: var(--text); }
.btn.secondary:hover { background: #d1d5db; }
.btn.danger { background: #ef4444; }
.btn.danger:hover { background: #dc2626; }
.btn.small { padding: 6px 12px; font-size: 0.85rem; }

.form-group { margin-bottom: 14px; }
label { display: block; font-size: 0.9rem; margin-bottom: 6px; color: var(--text-muted); }
input, textarea, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); }

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.table-wrap { overflow-x: auto; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { padding: 10px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--text-muted); font-weight: 600; }

.search {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.empty { text-align: center; color: var(--text-muted); padding: 30px; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}
.badge.recibo { background: #dbeafe; color: #1d4ed8; }
.badge.os { background: #fef3c7; color: #b45309; }
.badge.serv-em { background: #dbeafe; color: #1e40af; }
.badge.serv-pronto { background: #dcfce7; color: #166534; }
.badge.serv-devendo { background: #fee2e2; color: #991b1b; }
.badge.serv-pago { background: #dcfce7; color: #15803d; }

.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  cursor: pointer;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.preview-wrap {
  margin-top: 12px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: var(--shadow);
}
.preview-wrap iframe {
  display: block;
  width: 100%;
  height: 500px;
  border: none;
  border-radius: var(--radius);
}

.dash-servicos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}
.dash-card {
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
  border-left: 4px solid transparent;
  background: #fff;
  box-shadow: var(--shadow);
}
.dash-card.serv-em { border-left-color: #3b82f6; background: #eff6ff; }
.dash-card.serv-pronto { border-left-color: #22c55e; background: #f0fdf4; }
.dash-card.serv-devendo { border-left-color: #ef4444; background: #fef2f2; }
.dash-card.serv-pago { border-left-color: #15803d; background: #f0fdf4; }
.dash-num { font-size: 1.6rem; font-weight: 700; line-height: 1; }
.dash-label { font-size: 0.78rem; color: var(--text-muted); margin-top: 6px; text-transform: uppercase; letter-spacing: 0.02em; }

.servicos-lista {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}
.servico-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.servico-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.servico-cliente {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}
.servico-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 10px;
}
.servico-datas {
  display: flex;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.servico-datas strong { color: var(--text); font-weight: 600; }
.servico-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.periodo-inputs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.periodo-inputs input {
  width: auto;
  min-width: 140px;
}

textarea {
  overflow: hidden;
  resize: vertical;
  min-height: 60px;
}

.status-select {
  font-size: 0.8rem;
  padding: 4px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  cursor: pointer;
}

@media (max-width: 600px) {
  .app { padding: 12px; }
  .main { padding: 16px; }
  .preview-wrap iframe { height: 65vh; }
  .servico-datas { flex-direction: column; gap: 4px; }
}