:root {
  --color-primary: #0071E3; /* Azul Apple */
  --color-secondary: #F5F5F7; /* Gris claro */
  --color-dark: #1D1D1F; /* Negro carbón */
  --color-medium: #6E6E73; /* Gris oscuro */
  --color-light: #FFFFFF; /* Blanco */
  --font-inter: 'Inter', sans-serif;
  --max-width: 960px;
  --spacing-unit: 1.5rem;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-inter);
  background: var(--color-light);
  color: var(--color-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: calc(var(--spacing-unit) / 2);
}

h1 { font-size: 3.2rem; letter-spacing: -0.03em; }
h2 { font-size: 2.4rem; }
h3 { font-size: 1.4rem; }

p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-unit);
  color: var(--color-medium);
}

.section-title { margin-bottom: var(--spacing-unit); }
.section-subtitle {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-medium);
  margin-bottom: var(--spacing-unit);
}

/* Layout */
.section-padded { padding: calc(var(--spacing-unit) * 4) 0; }
.section-gray { background-color: var(--color-secondary); }
.text-center { text-align: center; }

/* Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  backdrop-filter: blur(10px);
}

.navbar .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo img {
  max-height: 60px;
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto; /* centrar el logo */
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--spacing-unit);
}

.nav-links a {
  color: var(--color-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-links a.nav-highlight {
  font-weight: 600;
  color: var(--color-primary);
}

/* Hero */
.hero-section {
  padding: calc(var(--spacing-unit) * 6) var(--spacing-unit);
  text-align: center;
  background: linear-gradient(180deg, var(--color-light), var(--color-secondary));
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-unit);
}

.hero-subtitle {
  font-size: 1.4rem;
  color: var(--color-medium);
  max-width: 800px;
  margin: 0 auto var(--spacing-unit);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-unit);
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.9rem 1.8rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 9999px;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-dark);
  color: var(--color-light);
}

.btn-primary:hover {
  background: var(--color-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--color-dark);
  border: 1px solid var(--color-dark);
}

.btn-secondary:hover {
  background: var(--color-dark);
  color: var(--color-light);
}

.btn-small {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

/* Cards */
.values-grid, .services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-unit);
  margin-top: calc(var(--spacing-unit) * 2);
}

.value-item, .service-card {
  background: var(--color-light);
  border-radius: 12px;
  padding: calc(var(--spacing-unit) * 1.5);
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  transition: transform 0.2s;
}

.value-item:hover, .service-card:hover {
  transform: translateY(-4px);
}

.value-item:hover h3,
.service-card:hover h3 {
  color: var(--color-primary);
}

/* Contacto */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-light);
  padding: calc(var(--spacing-unit) * 2);
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.form-group {
  margin-bottom: var(--spacing-unit);
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

input, textarea {
  width: 100%;
  padding: 0.9rem;
  font-size: 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  transition: border 0.2s, box-shadow 0.2s;
}

input:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.2);
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form button {
  width: 100%;
  padding: 1rem;
  font-size: 1.2rem;
}

/* Mensaje */
.form-message {
  margin-top: var(--spacing-unit);
  padding: 0.9rem;
  border-radius: 8px;
  font-weight: 500;
  text-align: center;
  display: none;
}

.form-message.success {
  background: #e6ffe6;
  color: #008000;
  display: block;
}

.form-message.error {
  background: #ffe6e6;
  color: #cc0000;
  display: block;
}

/* Footer */
footer {
  background: var(--color-dark);
  color: var(--color-light);
  padding: var(--spacing-unit);
  text-align: center;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.6rem; }
  .hero-title { font-size: 2.5rem; }

.navbar .container {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.logo {
  margin-bottom: 1rem;
}

.nav-links {
  flex-direction: row;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}
}