/* =============================================================
   fecha.css
   Estilos específicos para la Calculadora de Fecha de Entrega
   ============================================================= */

/* === Variables y Reset === */
:root {
  --brand: #e30613;
  --bg: #f5f5f5;
  --card: #ffffff;
  --text: #222;
  --muted: #555;
  --shadow: 0 6px 24px rgba(0,0,0,.06);
}

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

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: flex-start; /* antes center */
  overflow: hidden; /* evita el scroll innecesario */
}

/* === Estructura Principal === */
header {
  background: var(--brand);
  color: #fff;
  padding: 14px 20px;
  text-align: center;
  font-weight: 800;
  font-size: 1.3rem;
  border-radius: 10px;
  margin-bottom: 22px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 480px;
}

.container {
  background: var(--card);
  border-radius: 14px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 460px;
  padding: 24px 22px 32px;
  text-align: center;
  margin-top: 20px; /* le damos espacio arriba */
}

h1 {
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 10px;
  text-transform: uppercase;
}

p.helper {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 20px;
}

/* === Formulario === */
form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-weight: 600;
  color: #333;
  font-size: 14px;
}

select,
input[type="date"],
input[type="number"] {
  width: 100%;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
}

/* === Botones === */
.actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
}

button.primary {
  background: var(--brand);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
  text-transform: uppercase;
}

button.primary:hover {
  transform: translateY(-1px);
  background: #c70510;
}

button.ghost {
  background: transparent;
  color: #333;
  border: 1px solid #ddd;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  text-transform: uppercase;
  font-weight: 700;
}

/* === Mensajes === */
.result, .warn {
  grid-column: 1 / -1;
  margin-top: 6px;
  padding: 12px;
  border-radius: 10px;
  font-size: 0.95rem;
  display: none;
}

.result {
  border: 1px solid #e0f0e6;
  background: #f4fbf7;
  color: #185a37;
}

.warn {
  border: 1px solid #f2d7d5;
  background: #fdf2f1;
  color: #7a2629;
}

/* === Footer y Logos === */
footer {
  text-align: center;
  color: #777;
  font-size: 12px;
  padding: 16px 0 26px;
}

.logo-top {
  position: absolute;
  top: 10px;
  left: 10px;
  height: 38px;
  z-index: 10;
}

.logo-brand {
  position: fixed;
  bottom: 15px;
  right: 15px;
  width: 110px;
  opacity: 0.9;
}

/* === Responsive === */
@media (max-width: 640px) {
  form { grid-template-columns: 1fr; }
  header { font-size: 1.1rem; margin-bottom: 16px; }
  .container { padding: 18px; max-width: 94%; margin-top: 10px; }
  .logo-top, .logo-brand { display: none; }
}