/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES (Angel Céspedes - Portfolio Premium)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-darker: #060913;
  --bg-dark: #0b0f19;
  --bg-card: rgba(15, 22, 42, 0.6);
  --bg-card-hover: rgba(20, 30, 55, 0.85);
  --border-color: rgba(255, 255, 255, 0.05);
  --border-hover: rgba(0, 242, 254, 0.3);
  
  /* Accent Colors */
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-purple: #7f00ff;
  --accent-magenta: #e100ff;
  --accent-gradient-primary: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
  --accent-gradient-purple: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-magenta) 100%);
  --accent-gradient-text: linear-gradient(90deg, #00f2fe 0%, #4facfe 50%, #7f00ff 100%);
  
  /* Text Colors */
  --text-white: #f8fafc;
  --text-silver: #cbd5e1;
  --text-gray: #94a3b8;
  --text-muted: #64748b;
  
  /* Shadows & Blur */
  --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.25);
  --glow-blue: 0 0 25px rgba(79, 172, 254, 0.25);
  --glow-purple: 0 0 25px rgba(127, 0, 255, 0.25);
  --glass-blur: blur(16px);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  font-size: 16px;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-darker);
  color: var(--text-silver);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  color: var(--text-white);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  border: 2px solid var(--bg-darker);
  transition: var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue);
}

/* ==========================================================================
   BACKGROUND GLOW DECORATIONS
   ========================================================================== */
.bg-glow-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bg-glow-ball {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  mix-blend-mode: screen;
  animation: pulseGlow 15s infinite alternate;
}

.bg-glow-ball:nth-child(1) {
  top: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: var(--accent-cyan);
}

.bg-glow-ball:nth-child(2) {
  top: 35%;
  left: -15%;
  width: 600px;
  height: 600px;
  background: var(--accent-purple);
  animation-delay: -5s;
}

.bg-glow-ball:nth-child(3) {
  top: 60%;
  right: -5%;
  width: 450px;
  height: 450px;
  background: var(--accent-blue);
  animation-delay: -10s;
}

.bg-glow-ball:nth-child(4) {
  bottom: 5%;
  left: 10%;
  width: 550px;
  height: 550px;
  background: var(--accent-magenta);
  animation-delay: -3s;
}

@keyframes pulseGlow {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.1;
  }
  100% {
    transform: translate(50px, 40px) scale(1.15);
    opacity: 0.16;
  }
}

/* ==========================================================================
   REUSABLE UTILITIES & COMPONENTS
   ========================================================================== */
.section {
  padding: 100px 0 60px;
  position: relative;
}

.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--accent-gradient-primary);
  border-radius: 2px;
}

.section-header p {
  color: var(--text-gray);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 10px auto 0;
}

/* Premium Card */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 30px;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px -15px rgba(0, 242, 254, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: 30px;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.btn-primary {
  background: var(--accent-gradient-primary);
  color: #030712;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5), var(--glow-cyan);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-blue);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Gradient Text */
.gradient-text {
  background: var(--accent-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Chip/Badge */
.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

/* ==========================================================================
   NAVIGATION (GLASS NAVBAR)
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition-smooth);
}

.header.scrolled {
  height: 70px;
  background: rgba(6, 9, 19, 0.8);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

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

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-gradient-primary);
  display: inline-block;
  box-shadow: var(--glow-cyan);
}

.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-gray);
  position: relative;
  padding: 5px 0;
}

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

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

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 40px);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
}

.hero-subtitle {
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-subtitle::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--accent-cyan);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--text-white);
  margin-bottom: 25px;
  font-weight: 500;
}

.hero-desc {
  color: var(--text-gray);
  font-size: 1.05rem;
  margin-bottom: 35px;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 20px;
}

.hero-socials span {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--text-gray);
  transition: var(--transition-smooth);
}

.social-icon:hover {
  background: rgba(0, 242, 254, 0.08);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--glow-cyan);
}

/* Circular Glowing Retrato Frame */
.hero-image-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.image-glow-ring {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  padding: 8px;
  background: linear-gradient(45deg, var(--accent-cyan), var(--accent-purple), var(--accent-magenta));
  animation: rotateRing 10s linear infinite;
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.25);
}

.image-glow-ring::after {
  content: '';
  position: absolute;
  top: -15px;
  left: -15px;
  right: -15px;
  bottom: -15px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 242, 254, 0.3);
  animation: rotateRingReverse 15s linear infinite;
}

.hero-img-wrapper {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--bg-dark);
  border: 4px solid var(--bg-darker);
  transform: rotate(-10s); /* Counteract rotation slightly for stability */
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
  /* Ensure image stays upright inside rotating ring */
  animation: rotateCounterRing 10s linear infinite;
}

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

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

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

/* ==========================================================================
   METRIC CARDS (Sección Perfil)
   ========================================================================== */
.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: flex-start;
}

.profile-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.metric-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 20px;
}

.metric-card i {
  font-size: 2rem;
  background: var(--accent-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 15px;
}

.metric-number {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
  margin-bottom: 5px;
}

.metric-title {
  font-size: 0.9rem;
  color: var(--text-gray);
  font-weight: 500;
}

.profile-text-content h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.profile-text-content p {
  margin-bottom: 15px;
  color: var(--text-gray);
  text-align: justify;
}

/* ==========================================================================
   SKILLS / TECHNICAL STACK (Tabs Interactivas)
   ========================================================================== */
.skills-tabs-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.skills-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 20px;
}

.skill-tab-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-gray);
  padding: 10px 20px;
  border-radius: 30px;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.skill-tab-btn i {
  margin-right: 8px;
}

.skill-tab-btn:hover {
  color: var(--text-white);
  border-color: rgba(0, 242, 254, 0.3);
  background: rgba(0, 242, 254, 0.03);
}

.skill-tab-btn.active {
  background: var(--accent-gradient-primary);
  color: #030712;
  border-color: transparent;
  box-shadow: var(--glow-cyan);
}

.skills-content {
  position: relative;
  min-height: 300px;
}

.skills-pane {
  display: none;
  animation: fadeIn 0.5s ease forwards;
}

.skills-pane.active {
  display: block;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.skill-name {
  font-weight: 600;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-name i {
  color: var(--accent-cyan);
}

.skill-bar-wrapper {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.skill-bar-fill {
  height: 100%;
  background: var(--accent-gradient-primary);
  border-radius: 10px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
}

.skills-pane.active .skill-bar-fill {
  /* Triggered via class */
}

.skill-desc-list {
  font-size: 0.85rem;
  color: var(--text-gray);
  margin-top: 5px;
  padding-left: 15px;
  list-style-type: circle;
}

.skill-desc-list li {
  margin-bottom: 4px;
}

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

/* ==========================================================================
   EXPERIENCE TIMELINE (Filtro Experiencia vs Consultoría)
   ========================================================================== */
.experience-filters {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
}

.exp-filter-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-gray);
  padding: 10px 24px;
  border-radius: 30px;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.exp-filter-btn:hover {
  border-color: rgba(127, 0, 255, 0.3);
  color: var(--text-white);
  background: rgba(127, 0, 255, 0.03);
}

.exp-filter-btn.active {
  background: var(--accent-gradient-purple);
  color: var(--text-white);
  border-color: transparent;
  box-shadow: var(--glow-purple);
}

/* Timeline Track */
.timeline-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 31px;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, 
    rgba(0, 242, 254, 0.1) 0%, 
    rgba(127, 0, 255, 0.5) 20%, 
    rgba(0, 242, 254, 0.5) 80%, 
    rgba(127, 0, 255, 0.1) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 70px;
  animation: timelineFadeIn 0.6s ease forwards;
  transition: var(--transition-smooth);
}

.timeline-item.hidden {
  display: none;
}

/* Bullet node */
.timeline-dot {
  position: absolute;
  left: 20px;
  top: 20px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-darker);
  border: 4px solid var(--accent-purple);
  z-index: 2;
  box-shadow: 0 0 10px rgba(127, 0, 255, 0.8);
  transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-dot {
  background: var(--accent-cyan);
  border-color: var(--text-white);
  box-shadow: var(--glow-cyan);
  transform: scale(1.2);
}

.timeline-item.consulting .timeline-dot {
  border-color: var(--accent-blue);
  box-shadow: 0 0 10px rgba(79, 172, 254, 0.8);
}

.timeline-item.consulting:hover .timeline-dot {
  background: var(--accent-magenta);
  border-color: var(--text-white);
  box-shadow: var(--glow-purple);
}

/* Timeline Card */
.timeline-card {
  padding: 28px;
  cursor: pointer;
  user-select: none;
}

.timeline-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  transition: margin-bottom 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-card.expanded .timeline-card-header {
  margin-bottom: 20px;
}

.timeline-title-area h3 {
  font-size: 1.4rem;
  margin-bottom: 5px;
}

.timeline-company {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-company.consult {
  color: var(--accent-magenta);
}

.timeline-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.timeline-date {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-white);
  font-weight: 500;
  margin-bottom: 8px;
}

.timeline-type {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

/* Accordion Chevron */
.accordion-chevron {
  font-size: 1.15rem;
  color: var(--text-muted);
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  align-self: center;
}

.timeline-card:hover .accordion-chevron {
  background: rgba(0, 242, 254, 0.05);
  border-color: rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
}

.timeline-item.consulting .timeline-card:hover .accordion-chevron {
  background: rgba(127, 0, 255, 0.05);
  border-color: rgba(127, 0, 255, 0.2);
  color: var(--accent-magenta);
}

.timeline-card.expanded .accordion-chevron {
  transform: rotate(180deg);
  background: rgba(0, 242, 254, 0.1) !important;
  border-color: var(--accent-cyan) !important;
  color: var(--accent-cyan) !important;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.timeline-item.consulting .timeline-card.expanded .accordion-chevron {
  background: rgba(127, 0, 255, 0.1) !important;
  border-color: var(--accent-magenta) !important;
  color: var(--accent-magenta) !important;
  box-shadow: 0 0 10px rgba(127, 0, 255, 0.2);
}

/* Timeline Detailed Points */
.timeline-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.timeline-card.expanded .timeline-details {
  max-height: 1500px;
  opacity: 1;
}

.timeline-block {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  padding: 18px;
}

.timeline-block-title {
  font-size: 0.95rem;
  color: var(--text-white);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.timeline-block-title i {
  color: var(--accent-cyan);
}

.timeline-item.consulting .timeline-block-title i {
  color: var(--accent-magenta);
}

.timeline-bullets {
  padding-left: 15px;
  list-style-type: square;
}

.timeline-bullets li {
  margin-bottom: 8px;
  color: var(--text-gray);
  font-size: 0.92rem;
  text-align: justify;
}

.timeline-bullets li strong {
  color: var(--text-silver);
}

@keyframes timelineFadeIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Protected References Lock & Unlock Animations */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-6px); }
  20%, 40%, 60%, 80% { transform: translateX(6px); }
}

.shake-animation {
  animation: shake 0.5s ease-in-out;
}

@keyframes slideDownFade {
  from { opacity: 0; transform: translateY(-15px); }
  to { opacity: 1; transform: translateY(0); }
}

.refs-unlocked-animate {
  animation: slideDownFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ==========================================================================
   ACADEMIC & CERTIFICATIONS (Buscador y Grid Dinámico)
   ========================================================================== */
.ac-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
}

/* Education Cards */
.education-list {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.edu-card {
  position: relative;
  padding-left: 25px;
}

.edu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent-gradient-primary);
  border-radius: 2px;
}

.edu-year {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 5px;
}

.edu-title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.edu-institution {
  color: var(--text-gray);
  font-size: 0.95rem;
}

/* Certifications Panel */
.certs-panel {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.certs-search-bar {
  display: flex;
  gap: 10px;
  width: 100%;
}

.search-input-wrapper {
  position: relative;
  flex-grow: 1;
}

.search-input-wrapper i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.certs-search-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 30px;
  padding: 12px 20px 12px 45px;
  color: var(--text-white);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition-fast);
}

.certs-search-input:focus {
  border-color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

.certs-filter-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-gray);
  padding: 0 15px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.certs-filter-btn.active {
  background: var(--accent-gradient-primary);
  color: #030712;
  border-color: transparent;
  box-shadow: var(--glow-cyan);
}

.certs-scroll-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 10px;
}

/* Custom Scrollbar for Certs */
.certs-scroll-grid::-webkit-scrollbar {
  width: 6px;
}

.certs-scroll-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.certs-scroll-grid::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 242, 254, 0.3);
}

.cert-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  transition: var(--transition-smooth);
}

.cert-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(0, 242, 254, 0.2);
  transform: translateX(3px);
}

.cert-info h4 {
  font-size: 0.95rem;
  margin-bottom: 3px;
  font-weight: 600;
}

.cert-info p {
  font-size: 0.8rem;
  color: var(--text-gray);
}

.cert-date {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 600;
  white-space: nowrap;
}

.certs-count {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: right;
}

/* Baneco Training sub-grid */
.baneco-section {
  margin-top: 50px;
}

.baneco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 25px;
}

.baneco-card {
  padding: 20px;
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.baneco-card i {
  font-size: 1.5rem;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.08);
  padding: 12px;
  border-radius: 10px;
}

.baneco-info h4 {
  font-size: 0.95rem;
  margin-bottom: 5px;
}

.baneco-info p {
  font-size: 0.8rem;
  color: var(--text-gray);
}

/* ==========================================================================
   TEACHING, ORATORY & INNOVATION (Docencia)
   ========================================================================== */
.teaching-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 25px;
}

.teaching-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.teaching-card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(127, 0, 255, 0.08);
  border: 1px solid rgba(127, 0, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-magenta);
  margin-bottom: 20px;
  box-shadow: 0 0 15px rgba(127, 0, 255, 0.1);
}

.teaching-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.teaching-card p {
  color: var(--text-gray);
  font-size: 0.92rem;
  flex-grow: 1;
  text-align: justify;
}

/* ==========================================================================
   REFERENCES (Grid Dinámico y Copiado rápido)
   ========================================================================== */
.references-search-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 35px;
  flex-wrap: wrap;
  gap: 20px;
}

.ref-search-bar {
  max-width: 400px;
  width: 100%;
}

.references-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  max-height: 580px;
  overflow-y: auto;
  padding: 10px 10px 10px 0;
}

/* Custom Scrollbar for References */
.references-grid::-webkit-scrollbar {
  width: 6px;
}

.references-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.references-grid::-webkit-scrollbar-thumb:hover {
  background: rgba(79, 172, 254, 0.3);
}

.ref-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 3px solid transparent;
}

.ref-card:hover {
  border-left-color: var(--accent-blue);
}

.ref-info-top h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.ref-role {
  color: var(--accent-blue);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 10px;
  min-height: 38px;
  display: flex;
  align-items: center;
}

.ref-company {
  color: var(--text-gray);
  font-size: 0.85rem;
  margin-bottom: 15px;
  font-weight: 500;
}

.ref-contact-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 15px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.ref-phone {
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  color: var(--text-white);
  font-weight: 600;
}

.ref-buttons {
  display: flex;
  gap: 8px;
}

.ref-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-gray);
  cursor: pointer;
  transition: var(--transition-fast);
}

.ref-btn:hover {
  background: rgba(79, 172, 254, 0.1);
  border-color: var(--accent-blue);
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(79, 172, 254, 0.2);
}

.ref-btn.copied {
  background: rgba(0, 242, 254, 0.15) !important;
  border-color: var(--accent-cyan) !important;
  color: var(--accent-cyan) !important;
}

/* ==========================================================================
   CONTACT & FOOTER
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 50px;
  align-items: flex-start;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item-card {
  display: flex;
  gap: 20px;
  align-items: center;
}

.contact-item-card i {
  font-size: 1.4rem;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.06);
  border: 1px solid rgba(0, 242, 254, 0.15);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.05);
}

.contact-item-detail h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 3px;
}

.contact-item-detail p, .contact-item-detail a {
  font-size: 1.05rem;
  color: var(--text-white);
  font-weight: 500;
}

.contact-item-detail a:hover {
  color: var(--accent-cyan);
}

/* Interactive Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-gray);
  letter-spacing: 0.5px;
}

.form-control {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 14px 18px;
  color: var(--text-white);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* Notification Modal / Toast */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(6, 9, 19, 0.8);
  backdrop-filter: var(--glass-blur);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-dark);
  border: 1px solid var(--border-hover);
  padding: 40px;
  border-radius: 20px;
  max-width: 450px;
  width: 90%;
  text-align: center;
  box-shadow: 0 15px 50px rgba(0, 242, 254, 0.25);
  transform: scale(0.9);
  transition: var(--transition-smooth);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(0, 242, 254, 0.1);
  border: 2px solid var(--accent-cyan);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin: 0 auto 25px;
  box-shadow: var(--glow-cyan);
}

.modal-content h3 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.modal-content p {
  color: var(--text-gray);
  margin-bottom: 25px;
}

/* Back to Top Floating Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--accent-gradient-primary);
  color: #030712;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 99;
  border: none;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition-smooth);
  box-shadow: var(--glow-cyan);
}

.back-to-top.active {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.5);
}

/* Footer bottom */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
  background: rgba(6, 9, 19, 0.5);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-credits {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-credits a {
  color: var(--text-gray);
  font-weight: 500;
}

.footer-credits a:hover {
  color: var(--accent-cyan);
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVE STYLING)
   ========================================================================== */
@media (max-width: 1024px) {
  h1 { font-size: 3rem; }
  .hero-title { font-size: 3rem; }
  .ac-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  html {
    scroll-padding-top: calc(var(--header-height) + 10px);
  }
  
  .section {
    padding: 70px 0 40px;
  }
  
  .section-header {
    margin-bottom: 40px;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  /* Navigation mobile menu */
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(11, 15, 25, 0.98);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    padding: 100px 40px;
    gap: 25px;
    transition: var(--transition-smooth);
    z-index: 1000;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  /* Menu icon state */
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  /* Hero section mobile */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-subtitle {
    justify-content: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-socials {
    flex-direction: column;
    gap: 15px;
  }
  
  .image-glow-ring {
    width: 260px;
    height: 260px;
  }
  
  .image-glow-ring::after {
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
  }
  
  /* Profile layout mobile */
  .profile-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  
  /* Experience mobile styling */
  .timeline-container::before {
    left: 17px;
  }
  
  .timeline-item {
    padding-left: 45px;
  }
  
  .timeline-dot {
    left: 6px;
    top: 15px;
  }
  
  .timeline-card {
    padding: 20px;
  }
  
  .timeline-card-header {
    flex-direction: column;
    gap: 10px;
  }
  
  .timeline-meta {
    text-align: left;
    align-items: flex-start;
  }
  
  /* Form mobile */
  .form-group-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* Footer mobile */
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.3rem;
  }
  
  .section-header h2 {
    font-size: 1.7rem;
  }
  
  .profile-metrics {
    grid-template-columns: 1fr;
  }
  
  .certs-search-bar {
    flex-direction: column;
  }
  
  .certs-filter-btn {
    padding: 10px 0;
    text-align: center;
  }
  
  .references-search-container {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   LANGUAGE SWITCHER & TRANSLATION SYSTEM
   ========================================================================== */
html[lang="es"] .lang-en {
  display: none !important;
}

html[lang="en"] .lang-es {
  display: none !important;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.lang-switch-pill {
  display: flex;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 2px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.lang-pill-item {
  padding: 4px 10px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  border-radius: 18px;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-muted);
}

.lang-pill-item:hover {
  color: var(--text-white);
}

.lang-pill-item.active {
  background: var(--accent-gradient-primary);
  color: #030712;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

@media (max-width: 768px) {
  .header-right {
    gap: 15px;
  }
}