/* Visual SaaS (Opção 1): azul + cinza, clean e premium */

:root{
  --max: 980px;
  --radius: 14px;

  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #0f172a;      /* slate-900 */
  --muted: #475569;     /* slate-600 */
  --border: #e2e8f0;    /* slate-200 */

  --primary: #2563eb;   /* blue-600 */
  --primary-dark: #1d4ed8; /* blue-700 */
  --primary-soft: #eff6ff; /* blue-50 */

  --danger-bg: #fff1f2;
  --danger-border: #fecdd3;
  --danger-text: #9f1239;
}

*{ box-sizing: border-box; }

body{
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
}

.container{
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px;
}

/* Topo */
.topo{
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo{
  margin: 0;
  font-size: 22px;
  line-height: 1.2;
  padding: 14px 0 10px;
  letter-spacing: -0.2px;
}

.nav{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding-bottom: 14px;
}

.nav a{
  text-decoration: none;
  color: var(--text);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
}

.nav a:hover{
  background: var(--primary-soft);
  border-color: #c7d2fe;
}

/* Títulos */
h2{
  margin: 20px 0 12px;
  font-size: 22px;
  letter-spacing: -0.2px;
}

h3{
  margin: 18px 0 10px;
  font-size: 14px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

/* Card */
.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 14px 0;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
}

/* Form */
label{
  display: block;
  margin: 10px 0 12px;
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
}

input, textarea, select{
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  outline: none;
}

input:focus, textarea:focus, select:focus{
  border-color: #93c5fd;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

textarea{ resize: vertical; }

/* Botões */
button{
  display: inline-block;
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 800;
  border: 1px solid transparent;
  background: var(--primary);
  color: #fff;
}

button:hover{
  background: var(--primary-dark);
}

a button{
  margin-top: 0;
}

/* Links gerais */
a{
  color: var(--primary);
}

a:hover{
  color: var(--primary-dark);
}

/* Alerts */
.error{
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  padding: 10px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
  font-weight: 700;
}

/* Texto auxiliar */
.muted{
  color: var(--muted);
  margin-top: 10px;
}

/* Rodapé */
.rodape{
  margin-top: 26px;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

small{ color: var(--muted); }