:root {
  --color-primario: #000000;
  --color-secundario: #F6F6F6;
  --color-terciario: #22D4FD;
  --color-cuarto: #1158fc;
  --color-hover: #272727;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--color-primario);
  color: var(--color-secundario);
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* Header */
header {
  background-color: var(--color-primario);
  color: var(--color-secundario);
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-hover);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-terciario);
}

/* NAV MOBILE */
#nav-menu {
  display: none;
  width: 100%;
  background: var(--color-primario);
  padding-bottom: 1rem;
}

#nav-menu.open {
  display: block;
  animation: slideDown 0.3s ease;
}

#nav-menu.open .nav-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
}

/* Botón hamburguesa */
#hamburger {
  font-size: 1.8rem;
  background: none;
  border: none;
  color: var(--color-terciario);
  cursor: pointer;
  position: absolute;
  top: 1rem;
  right: 2rem;
  z-index: 10;
}


.nav-links {
  display: none;
  flex-direction: column;
  list-style: none;
  gap: 1rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-terciario);
  font-weight: 500;
}

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


#hamburger::before { content: "☰"; }
#hamburger.open::before { content: "❎"; }

#nav-menu.open .nav-links {
  display: flex;
  text-align: center;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/**************** Hero *****************/
.hero {
  background-color: var(--color-hover);
  padding: 3rem 0;
}

.hero-content {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 2rem;
}

.hero-text { text-align: center; }

.hero-text h2 {
  font-size: 2rem;
  color: var(--color-terciario);
  margin-bottom: 1rem;
}

.hero-text p {
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

.social-links { text-align: center; }

.social-links a {
  display: inline-block;
  margin: 0.5rem;
  padding: 0.5rem 1rem;
  border: 2px solid var(--color-terciario);
  border-radius: 6px;
  color: var(--color-secundario);
  text-decoration: none;
}

.social-links a:hover {
  background-color: var(--color-primario);
}

.hero-img {
  width: 250px;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(255, 255, 255, 0.1);
}

/************* Projects *************/
.projects {
  padding: 4rem 1rem;
  text-align: center;
}

.projects h2 {
  font-size: 2.5rem;
  color: var(--color-terciario);
  margin-bottom: 2rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.project-card {
  background-color: var(--color-hover);
  border-radius: 10px;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
}

.project-card h3 {
  color: var(--color-terciario);
  margin-bottom: 0.5rem;
}

.project-card p { margin-bottom: 1rem; }

.project-img {
  width: 100%;
  border-radius: 10px;
}

.project-card a {
  color: var(--color-terciario);
  font-weight: bold;
  text-decoration: none;
  margin-top: auto;
}

/************* About *************/
.about {
  padding: 3rem 0;
  background-color: var(--color-hover);
  text-align: center;
}

.about h2 { color: var(--color-terciario); margin-bottom: 1rem; }

.about p {
  max-width: 700px;
  margin: auto;
}

/************* Contact *************/
.contact {
  padding: 3rem 0;
  text-align: center;
}

.contact h2 {
  color: var(--color-terciario);
  margin-bottom: 1rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem auto;
  width: 90%;
  max-width: 500px;
}

.form-group {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.form-group label {
  margin-bottom: 0.5rem;
  color: var(--color-secundario);
  font-weight: bold;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.75rem;
  border-radius: 6px;
  border: none;
  font-size: 1rem;
  background-color: #f0f0f0;
  color: #000;
}

.contact .btn {
  background-color: var(--color-terciario);
  color: var(--color-primario);
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  font-weight: bold;
  cursor: pointer;
}

.contact .btn:hover { background-color: #1bb6e0; }

.btn-whatsapp {
  display: inline-block;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem;
  border: 2px solid var(--color-terciario);
  color: var(--color-secundario);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.3s;
}

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

/* Botón flotante de WhatsApp */
.whatsapp-float {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 58px;
  height: 58px;
  background-color: #25D366;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  z-index: 999;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.whatsapp-float img {
  width: 32px;
  height: 32px;
}

/* Hover */
.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.35);
}

/* Spinner */
.loader {
  border: 4px solid rgba(255,255,255,0.2);
  border-top: 4px solid var(--color-terciario);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  animation: spin 0.7s linear infinite;
  margin: 15px auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Check final */
.success-check {
  font-size: 2.2rem;
  color: #4ade80; /* Verde éxito */
  font-weight: bold;
  text-align: center;
  margin-top: 12px;
}

.hidden {
  display: none;
}

/* Botón enviando */
.btn.loading {
  background-color: #0a3cba;
  cursor: wait;
}

.btn.success {
  background-color: #4ade80;
  color: #000;
}


/************* Footer *************/
footer {
  background-color: var(--color-hover);
  color: var(--color-secundario);
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}

/************* Responsive *************/
@media (min-width: 768px) {
  .nav-links { display: flex; flex-direction: row; gap: 3rem; }
  #hamburger { display: none; }

  .hero-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}


@media (min-width: 1024px) {
    .projects-grid { grid-template-columns: repeat(3, 1fr); }

}