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

body {
  font-family: Arial;
  background: #007bff;
  color: #1e293b;
}

/* HEADER */
header {
  background: #0f172a;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
}

/* HERO */
.hero {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(135deg, #2563eb, #1e3a8a);
  color: white;
}

/* CARDS */
.card-container {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding: 20px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 12px;
  flex: 1;
  min-width: 200px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

/* FORM */
form {
  padding: 20px;
}

input, textarea {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 10px;
}

/* LOGIN */
.login-box {
  max-width: 400px;
  margin: 120px auto;
  padding: 30px;
  background: white;
  border-radius: 12px;
  text-align: center;
  .back-link {
  display: inline-block;
  margin-top: 15px;
  color: #2563eb;
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:hover {
  text-decoration: underline;
}
}

/* DASHBOARD */
.stats {
  display: flex;
  gap: 20px;
  padding: 20px;
  flex-wrap: wrap;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  background: #0f172a;
  color: white;
}

/* DARK MODE */
body.dark {
  background: #0b1220;
  color: #e2e8f0;
}

body.dark .card,
body.dark .login-box {
  background: #111827;
}

body.dark header,
body.dark footer {
  background: #0a0f1c;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  background: #0f172a;
  color: white;
}

.logo {
  font-weight: 600;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.95rem;
  transition: 0.3s;
}

.nav-links a:hover {
  color: white;
}

.login-link {
  padding: 6px 14px;
  border: 1px solid #2563eb;
  border-radius: 8px;
  color: #2563eb;
}

.login-link:hover {
  background: #2563eb;
  color: white;
}

/* CONTACT SECTION */
.contact-section {
  padding: 80px 20px;
  background: linear-gradient(to bottom, #f8fafc, #eef2f7);
}

.contact-section h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 40px;
  color: #0f172a;
}

.erabilera {
    margin-bottom: 30px;
}

/* CARD WRAPPER */
.contact-form {
  max-width: 650px;
  margin: auto;
  padding: 40px;
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

/* INPUTS */
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 18px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

/* FOCUS */
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #2563eb;
  outline: none;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

/* BOTÓN PRO */
.primary-btn {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

/* HOVER */
.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(37,99,235,0.35);
}

/* ===== DARK MODE ===== */
body.dark .contact-section {
  background: linear-gradient(to bottom, #0b1220, #0f172a);
}

body.dark .contact-form {
  background: #111827;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

body.dark .contact-section h2 {
  color: #e2e8f0;
}

body.dark .contact-form input,
body.dark .contact-form textarea {
  background: #0b1220;
  color: #e2e8f0;
  border: 1px solid #334155;
}

body.dark .contact-form input::placeholder,
body.dark .contact-form textarea::placeholder {
  color: #94a3b8;
}

body.dark .primary-btn {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}