:root {
  --primary-color: #4a4a4a; /* Negro claro profesional */
  --primary-hover: #5e5e5e;
  --bg-dark: #121212;
  --text-light: #f8f9fa;
  --transition-base: all 0.3s ease;
}

/* Base Styles */
body {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding-top: 100px;
  margin-top: 80px;
}

/* Header & Navigation */
header {
  transition: var(--transition-base);
  z-index: 1030;
}

.navbar {
  top: 60px;
  z-index: 1020;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0;
  transition: var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Hero Section */
#hero {
  background: linear-gradient(rgba(18, 18, 18, 0.9), rgba(18, 18, 18, 0.9)), 
              url('../img/hero-bg-pattern.svg');
  background-size: cover;
}

.text-primary {
  color: var(--primary-color) !important;
}

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

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

/* Responsive Adjustments */
@media (max-width: 992px) {
  body {
    padding-top: 70px;
  }
  
  .navbar {
    top: 50px;
  }
  
  .nav-link {
    padding: 0.5rem 1rem;
  }
}

/* Animaciones */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-illustration {
  animation: fadeInUp 1s ease-out forwards;
}

/* About Page Styles */
.about-image {
    transition: var(--transition-base);
    border: 1px solid var(--primary-color);
}

.about-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.skill-item {
    transition: var(--transition-base);
}

.skill-item:hover {
    transform: translateX(5px);
}

.soft-skill-item {
    transition: var(--transition-base);
    padding: 1rem;
    border-radius: 0.5rem;
}

.soft-skill-item:hover {
    background-color: rgba(74, 74, 74, 0.1);
    transform: translateY(-3px);
}

/* Timeline Styles */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline::before {
    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;
}

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

.timeline-item.left {
    left: 0;
}

.timeline-item.right {
    left: 50%;
}

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

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

.timeline-content {
    position: relative;
}

.timeline-date {
    position: absolute;
    top: 15px;
    font-weight: bold;
    color: var(--primary-color);
}

.timeline-item.left .timeline-date {
    right: -100px;
    text-align: right;
}

.timeline-item.right .timeline-date {
    left: -100px;
    text-align: left;
}

/* Contact Page Styles */
.contact-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(74, 74, 74, 0.1);
    border-radius: 50%;
    transition: var(--transition-base);
}

.contact-icon:hover {
    background-color: rgba(74, 74, 74, 0.3);
    transform: scale(1.1);
}

#contactForm .form-control {
    transition: var(--transition-base);
}

#contactForm .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(74, 74, 74, 0.25);
}

/* Responsive Timeline */
@media (max-width: 768px) {
    .timeline::before {
        left: 40px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 0;
    }
    
    .timeline-item.left, 
    .timeline-item.right {
        left: 0;
    }
    
    .timeline-item.left::after, 
    .timeline-item.right::after {
        left: 30px;
    }
    
    .timeline-item.left .timeline-date,
    .timeline-item.right .timeline-date {
        left: 70px;
        right: auto;
        top: -25px;
        text-align: left;
    }
}

/* Projects Page Styles */
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    perspective: 1000px;
}

.project-card-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
    height: 100%;
}

.project-card:hover .project-card-inner {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.project-card img {
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--primary-color);
}

.filter-btn {
    transition: all 0.3s ease;
    min-width: 120px;
}

.filter-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Modal Styles */
#projectModal .modal-content {
    border: 1px solid var(--primary-color);
}

#projectModal .carousel-item img {
    max-height: 400px;
    object-fit: contain;
}

#projectModal pre {
    max-height: 200px;
    overflow-y: auto;
}

/* Syntax Highlighting (basic) */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
    color: #6a9955;
}

.token.punctuation {
    color: #d4d4d4;
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
    color: #b5cea8;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
    color: #ce9178;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
    color: #d4d4d4;
}

.token.atrule,
.token.attr-value,
.token.keyword {
    color: #569cd6;
}

.token.function,
.token.class-name {
    color: #dcdcaa;
}

.token.regex,
.token.important,
.token.variable {
    color: #d16969;
}