@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap");

:root {
  --color-primary: #004aad;
  --color-primary-hover: #0a5df0;
  --color-bg: #f5f7fb;
  --color-card: #ffffff;
  --color-border: #e0e6f0;
  --color-text: #222;
  --color-muted: #6c7a99;
  --radius: 14px;
  --transition: 0.25s ease;
}

* {
  box-sizing: border-box;
  font-family: "Poppins", system-ui, sans-serif;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

header {
  background: var(--color-primary);
  color: #fff;
  padding: 28px 16px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.5px;
}

header p {
  margin: 6px 0 0;
  font-size: 1rem;
  opacity: 0.9;
}

main {
  max-width: 1000px;
  margin: 40px auto;
  padding: 0 16px 40px;
}

form {
  display: grid;
  gap: 24px;
}

fieldset {
  border: none;
  border-radius: var(--radius);
  background: var(--color-card);
  padding: 22px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}
fieldset:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

legend {
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 14px;
  color: var(--color-primary);
}

label {
  display: flex;
  flex-direction: column;
  font-size: 0.95rem;
  font-weight: 500;
  color: #333;
}

input,
select,
textarea {
  margin-top: 6px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 74, 173, 0.15);
  outline: none;
}

.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.row {
  display: flex;
  justify-content: center;
}

button {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #fff;
  border: none;
  padding: 14px 36px;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow var(--transition);
}
button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 74, 173, 0.35);
}
button:active {
  transform: translateY(0);
  box-shadow: none;
}

footer {
  text-align: center;
  margin: 20px 0 12px;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* 📱 Responsivo */
@media (max-width: 600px) {
  h1 {
    font-size: 1.5rem;
  }
  legend {
    font-size: 1rem;
  }
  input,
  select,
  textarea {
    font-size: 0.9rem;
    padding: 10px;
  }
  button {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
  }
}

/* 🌙 Modo oscuro */
@media (prefers-color-scheme: dark) {
  body {
    background: #0e1320;
    color: #eaeefb;
  }
  label{
  color: rgb(255, 255, 255);
}

  fieldset {
    background: #141a2b;
    border: 1px solid #1f2a40;
  }
  input,
  select,
  textarea {
    background: #0b1020;
    border-color: #2a3557;
    color: #eaeefb;
  }
  legend {
    color: #5b8dff;
  }
}
.btn-termina {
  display: inline-block;
  background: #28a745;
  color: #fff;
  padding: 13px 20px;
  font-size: 1rem;
  border-radius: 10px;
  text-decoration: none;
  transition: background .15s, transform .02s;
}
.btn-termina:hover {
  background: #34d058;
}
.btn-termina:active {
  transform: translateY(1px);
}
/* Ajuste para que Diseñador y Constructor queden en dos columnas */
.cols.two-cols {
  display: flex;
  gap: 15px;
}

.cols.two-cols label {
  flex: 1; /* cada select ocupa 50% */
}

.cols.two-cols select {
  width: 100%;
  max-width: 100%;
}