/* 
 * Daniel Becerra Vidaurre - Portfolio
 * Main Stylesheet
 */

:root {
  /* Color palette */
  --bg-color: #f4f4f4;
  --text-color: #222222;
  --primary-color: #0055dd; /* Mejorado para contraste */
  --secondary-color: #445566; /* Mejorado para contraste */
  --accent-color: #0033aa; /* Mejorado para contraste */
  --light-color: #ffffff;
  --dark-color: #333333;
  --gray-color: #666666; /* Mejorado para contraste */
  --border-color: #dddddd;
  
  /* Font settings */
  --font-main: 'Roboto', sans-serif;
  --font-heading: 'Montserrat', sans-serif;
}

/* Dark mode variables */
.dark-mode {
  --bg-color: #222222;
  --text-color: #f4f4f4;
  --border-color: #444444;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease, outline 0.2s ease;
}

a:hover {
  color: var(--accent-color);
}

/* Eliminando el outline para navegación por teclado */
a:focus, button:focus, input:focus, textarea:focus, select:focus, .btn:focus {
  outline: none;
}

/* Skip to content link - Accesibilidad */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: var(--light-color);
  padding: 8px;
  z-index: 1001;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  margin-bottom: 1rem;
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
  position: relative;
  padding-bottom: 0.5rem;
}

h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background-color: var(--primary-color);
}

p {
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background-color: var(--primary-color);
  color: var(--light-color);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

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

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

.btn-secondary:hover {
  background-color: #778899;
}

img {
  max-width: 100%;
  height: auto;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Header */
header {
  padding: 1rem 0;
  background-color: var(--bg-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.dark-mode header {
  background-color: var(--dark-color);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

/* Navigation */
.nav-menu {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: 1.5rem;
}

.nav-link {
  color: var(--text-color);
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.hamburger {
  display: none;
  cursor: pointer;
}

.bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  background-color: var(--text-color);
  transition: all 0.3s ease;
}

/* Main content */
main {
  margin-top: 80px;
  min-height: calc(100vh - 80px - 100px); /* Ensures footer stays at bottom */
}

/* Hero section */
.hero {
  padding: 5rem 0 2rem;
  text-align: center;
  margin-bottom: 121px;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.profile-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border: 3px solid var(--primary-color);
}

/* Section styling */
section {
  padding: 3rem 0;
}

/* Skills */
.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.skill-tag {
  background-color: var(--light-color);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
}

.skill-tag i {
  margin-right: 0.5rem;
  color: var(--primary-color);
}

.dark-mode .skill-tag {
  background-color: var(--dark-color);
}

/* Experience */
.timeline {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background-color: var(--primary-color);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -1px;
}

.timeline-item {
  padding: 10px 40px;
  position: relative;
  width: 50%;
  box-sizing: border-box;
  margin-bottom: 2rem;
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--light-color);
  border: 4px solid var(--primary-color);
  border-radius: 50%;
  top: 15px;
  z-index: 1;
}

.left {
  left: 0;
}

.right {
  left: 50%;
}

.left::after {
  right: -10px;
}

.right::after {
  left: -10px;
}

/* Responsive timeline para dispositivos móviles */
@media (max-width: 768px) {
  .timeline::after {
    left: 31px; /* Ajustado a la izquierda en móvil */
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  
  .left, .right {
    left: 0;
  }
  
  .left::after, .right::after {
    left: 15px;
  }
}

.timeline-content {
  padding: 20px;
  background-color: var(--light-color);
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.dark-mode .timeline-content {
  background-color: var(--dark-color);
}

.timeline-date {
  color: var(--primary-color);
  font-weight: 600;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  background-color: var(--light-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dark-mode .project-card {
  background-color: var(--dark-color);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.project-visual {
  height: 180px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.project-icon {
  font-size: 3.5rem;
  color: rgba(255, 255, 255, 0.9);
}

.dark-mode .project-visual {
  background: linear-gradient(135deg, var(--accent-color), #673AB7);
}

.project-content {
  padding: 1.5rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.project-tag {
  font-size: 0.8rem;
  padding: 0.3rem 0.6rem;
  background-color: var(--secondary-color);
  color: var(--light-color);
  border-radius: 4px;
}

/* Contact section */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--light-color);
  color: var(--text-color);
  transition: border-color 0.3s ease;
}

.dark-mode .form-control {
  background-color: var(--dark-color);
  border-color: var(--gray-color);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
footer {
  background: linear-gradient(135deg, var(--bg-color) 0%, rgba(0, 102, 255, 0.05) 100%);
  color: var(--text-color);
  padding: 1.5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(0, 102, 255, 0.1);
  box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.05);
}

footer .container {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
}

footer p {
  margin: 0.5rem 0;
  font-size: 0.95rem;
  color: var(--secondary-color);
  font-weight: 400;
}

footer .contact-info {
  margin-bottom: 1rem;
}

footer .contact-info p:first-child {
  font-weight: 600;
  color: var(--text-color);
}

.dark-mode footer {
  background-color: var(--dark-color);
  color: var(--light-color);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.dark-mode footer p {
  color: #8899aa;
}

.dark-mode footer .contact-info p:first-child {
  color: var(--light-color);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 1.25rem 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--secondary-color);
  background-color: rgba(0, 0, 0, 0.03);
  font-size: 1.2rem;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.social-link:hover {
  transform: translateY(-3px);
  background-color: var(--primary-color);
  color: white;
  box-shadow: 0 5px 15px rgba(0, 102, 255, 0.3);
}

.social-link .fa-github {
  color: #24292e;
}

.social-link:hover .fa-github {
  color: white;
}

.btn-secondary .fab.fa-github {
  color: var(--light-color) !important; /* GitHub icon in buttons should be white */
}

.dark-mode .social-link {
  background-color: rgba(255, 255, 255, 0.05);
  color: #8899aa;
}

.social-link .fab.fa-github:hover {
  color: #24292e; /* Keep GitHub color on hover */
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  margin-left: 1rem;
}

/* Media queries */
@media (max-width: 992px) {
  .timeline::after {
    left: 31px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  
  .timeline-item::after {
    left: 21px;
  }
  
  .left::after, .right::after {
    left: 21px;
  }
  
  .right {
    left: 0%;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }
  
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    gap: 0;
    flex-direction: column;
    background-color: var(--light-color);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
  }
  
  .dark-mode .nav-menu {
    background-color: var(--dark-color);
  }
  
  .nav-item {
    margin: 0;
    padding: 1rem 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .hero {
    padding: 3rem 0 1rem;
    margin-bottom: 60px;
  }
  
  .hero-content p {
    font-size: 1rem;
    line-height: 1.5;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-buttons .btn {
    margin: 0.5rem 0;
    width: 100%;
    max-width: 250px;
    text-align: center;
  }
  
  .skill-tag {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
  }
  
  section {
    padding: 2rem 0;
  }
  
  .footer .container {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
}

/* Animation classes */
.fade-in {
  opacity: 0;
  animation: fadeIn 1s forwards;
}

.slide-up {
  transform: translateY(50px);
  opacity: 0;
  animation: slideUp 0.8s forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}