/* ============================================================
   LUIS ESTRADA TECH - Portfolio Professional CSS
   ============================================================ */

/* ---- Variables ---- */
:root {
  --primary: #0d6efd;
  --primary-dark: #0a58ca;
  --primary-glow: rgba(13, 110, 253, 0.35);
  --bg-dark: #0a0a0f;
  --bg-card: #111118;
  --bg-card-hover: #16161f;
  --bg-nav: rgba(10, 10, 15, 0.95);
  --border: rgba(255, 255, 255, 0.07);
  --border-blue: rgba(13, 110, 253, 0.3);
  --text-primary: #f0f0f5;
  --text-secondary: #9090aa;
  --text-muted: #5a5a72;
  --success: #20c997;
  --warning: #ffc107;
  --gradient-hero: linear-gradient(135deg, #0a0a0f 0%, #0d1117 50%, #0a0a1a 100%);
  --gradient-blue: linear-gradient(135deg, #0d6efd, #00b4d8);
  --gradient-card: linear-gradient(145deg, #111118, #0e0e16);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-blue: 0 0 30px rgba(13, 110, 253, 0.2);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection { background: var(--primary); color: #fff; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ---- Loader ---- */
#loader {
  position: fixed;
  inset: 0;
  background: var(--bg-dark);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loader.hidden { opacity: 0; visibility: hidden; }

.loader-logo {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.loader-bar-fill {
  height: 100%;
  background: var(--gradient-blue);
  border-radius: 2px;
  animation: loadBar 1.8s ease-in-out forwards;
}

@keyframes loadBar {
  0% { width: 0; }
  100% { width: 100%; }
}

/* ---- Navbar ---- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  padding: 0;
}

#navbar.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.navbar-brand {
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.navbar-nav .nav-link {
  color: var(--text-secondary) !important;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  padding: 0.5rem 1rem !important;
  transition: var(--transition);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%; right: 50%;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 1px;
}

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

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  left: 1rem; right: 1rem;
}

.navbar-toggler {
  border: 1px solid var(--border-blue) !important;
  color: var(--primary) !important;
}

/* ---- Sections ---- */
section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(13, 110, 253, 0.1);
  border: 1px solid var(--border-blue);
  border-radius: 20px;
  padding: 4px 16px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-title span {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-blue);
  border-radius: 2px;
  margin: 0 auto 16px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ---- Hero ---- */
#home {
  min-height: 100vh;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13,110,253,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,110,253,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(13,110,253,0.12) 0%, transparent 70%);
  top: -150px; right: -150px;
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,180,216,0.08) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  pointer-events: none;
}

.hero-content { position: relative; z-index: 2; }

.hero-greeting {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-greeting .dot {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-name {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.hero-name span {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-weight: 400;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  border-left: 3px solid var(--primary);
  padding-left: 16px;
  font-style: italic;
}

.hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 50px; }

.btn-primary-custom {
  background: var(--gradient-blue);
  color: #fff;
  border: none;
  padding: 13px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(13, 110, 253, 0.4);
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(13, 110, 253, 0.5);
  color: #fff;
}

.btn-outline-custom {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-blue);
  padding: 13px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-outline-custom:hover {
  background: rgba(13, 110, 253, 0.1);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hero-socials span {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.social-icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1rem;
  transition: var(--transition);
}

.social-icon:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-blue);
}

/* Photo card */
.hero-photo-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-photo-ring {
  position: relative;
  width: 340px; height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-photo-ring::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--gradient-blue);
  animation: rotateRing 4s linear infinite;
  opacity: 0.7;
}

.hero-photo-ring::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--bg-dark);
}

@keyframes rotateRing {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-photo {
  width: 310px; height: 310px;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
  z-index: 1;
  border: 4px solid var(--bg-dark);
}

.hero-photo-placeholder {
  width: 310px; height: 310px;
  border-radius: 50%;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  color: var(--text-muted);
  font-size: 5rem;
}

.hero-photo-badge {
  position: absolute;
  bottom: 30px; right: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-blue);
  border-radius: 10px;
  padding: 10px 16px;
  z-index: 2;
  box-shadow: var(--shadow-card);
}

.hero-photo-badge .badge-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--success);
}

/* ---- Stats ---- */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}

.stat-item {
  text-align: center;
  padding: 0 20px;
  border-right: 1px solid var(--border);
}

.stat-item:last-child { border-right: none; }

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* ---- About ---- */
#about { background: var(--bg-dark); }

.about-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: var(--transition);
}

.about-card:hover {
  border-color: var(--border-blue);
  box-shadow: var(--shadow-blue);
}

.about-info-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.about-info-item:last-child { border-bottom: none; }

.about-info-icon {
  width: 40px; height: 40px;
  background: rgba(13,110,253,0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.9rem;
  flex-shrink: 0;
}

.about-info-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-info-value {
  font-size: 0.92rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Learning section */
.learning-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 20px;
}

.learning-card h5 {
  color: var(--primary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 16px;
}

.learning-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(32,201,151,0.1);
  border: 1px solid rgba(32,201,151,0.3);
  color: var(--success);
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  margin: 4px;
}

/* ---- Experience ---- */
#experience { background: #0d0d14; }

.timeline {
  position: relative;
  padding-left: 30px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  left: -30px; top: 20px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg-dark);
  box-shadow: 0 0 0 3px var(--border-blue);
}

.timeline-dot.active {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(32,201,151,0.3);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0%, 100% { box-shadow: 0 0 0 3px rgba(32,201,151,0.3); }
  50% { box-shadow: 0 0 0 6px rgba(32,201,151,0.1); }
}

.timeline-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: var(--border-blue);
  transform: translateX(6px);
  box-shadow: var(--shadow-card);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.timeline-company {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-role {
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.timeline-period {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.timeline-period.active-badge {
  color: var(--success);
  background: rgba(32,201,151,0.1);
  border-color: rgba(32,201,151,0.3);
}

.timeline-functions {
  list-style: none;
  margin: 14px 0;
  padding: 0;
}

.timeline-functions li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.timeline-functions li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.tech-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }

.tech-tag {
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(13,110,253,0.1);
  color: var(--primary);
  border: 1px solid var(--border-blue);
  border-radius: 4px;
  padding: 3px 10px;
}

/* ---- Projects ---- */
#projects { background: var(--bg-dark); }

.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 15px rgba(13,110,253,0.3);
}

.project-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--border-blue);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), var(--shadow-blue);
}

.project-img-wrapper {
  height: 200px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #0d1117, #1a1a2e);
}

.project-img-wrapper img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-img-wrapper img {
  transform: scale(1.05);
}

.project-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--border-blue);
}

.project-estado {
  position: absolute;
  top: 12px; right: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}

.estado-produccion {
  background: rgba(32,201,151,0.15);
  color: var(--success);
  border: 1px solid rgba(32,201,151,0.3);
}

.estado-completado {
  background: rgba(13,110,253,0.15);
  color: var(--primary);
  border: 1px solid var(--border-blue);
}

.project-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.project-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}

.project-techs { margin-bottom: 18px; }

.project-actions { display: flex; gap: 8px; }

.btn-project {
  flex: 1;
  padding: 8px 14px;
  border-radius: 7px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-project-github {
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-project-github:hover {
  background: rgba(255,255,255,0.12);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
}

.btn-project-demo {
  background: rgba(13,110,253,0.15);
  color: var(--primary);
  border: 1px solid var(--border-blue);
}

.btn-project-demo:hover {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(13,110,253,0.35);
}

.btn-project-demo.disabled-demo {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* ---- Skills ---- */
#skills { background: #0d0d14; }

.skill-category-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  height: 100%;
  transition: var(--transition);
}

.skill-category-card:hover {
  border-color: var(--border-blue);
  box-shadow: var(--shadow-card);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.skill-category-icon {
  width: 44px; height: 44px;
  background: rgba(13,110,253,0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.1rem;
}

.skill-category-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.skill-item { margin-bottom: 18px; }

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.skill-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-name i { color: var(--primary); font-size: 0.85rem; }

.skill-pct {
  font-size: 0.78rem;
  color: var(--primary);
  font-weight: 600;
}

.skill-bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--gradient-blue);
  border-radius: 3px;
  width: 0;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tech carousel */
.tech-carousel-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 30px 0;
  overflow: hidden;
}

.tech-carousel-track {
  display: flex;
  gap: 0;
  animation: scrollTech 25s linear infinite;
  width: max-content;
}

.tech-carousel-track:hover { animation-play-state: paused; }

@keyframes scrollTech {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.tech-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 20px;
  margin: 0 10px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: var(--transition);
}

.tech-chip:hover {
  border-color: var(--border-blue);
  color: var(--text-primary);
}

/* ---- Education ---- */
#education { background: var(--bg-dark); }

.edu-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: var(--transition);
  height: 100%;
}

.edu-card:hover {
  border-color: var(--border-blue);
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}

.edu-icon-wrapper {
  width: 60px; height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.edu-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.edu-institution {
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 10px;
}

.edu-period {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
}

.edu-estado {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 20px;
}

.estado-en-curso {
  background: rgba(255,193,7,0.1);
  color: var(--warning);
  border: 1px solid rgba(255,193,7,0.3);
}

.estado-graduado {
  background: rgba(32,201,151,0.1);
  color: var(--success);
  border: 1px solid rgba(32,201,151,0.3);
}

/* ---- Certifications ---- */
#certifications { background: #0d0d14; }

.cert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
  height: 100%;
}

.cert-card:hover {
  border-color: var(--border-blue);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.cert-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: block;
}

.cert-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.cert-entidad {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.cert-year {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
  background: rgba(13,110,253,0.1);
  border-radius: 20px;
  padding: 2px 12px;
  display: inline-block;
}

.cert-card-link {
  display: block;
  text-decoration: none;
  cursor: pointer;
}

.cert-link-hint {
  margin-top: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #0a66c2;
  opacity: 0;
  transform: translateY(4px);
  transition: var(--transition);
}

.cert-card-link:hover {
  border-color: #0a66c2 !important;
  box-shadow: 0 8px 24px rgba(10, 102, 194, 0.25) !important;
  transform: translateY(-6px) !important;
}

.cert-card-link:hover .cert-link-hint {
  opacity: 1;
  transform: translateY(0);
}

.cert-card-link:hover .cert-name {
  color: var(--text-primary);
}

/* ---- Contact ---- */
#contact { background: var(--bg-dark); }

.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  height: 100%;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: var(--transition);
}

.contact-info-item:last-child { border-bottom: none; }

.contact-info-item:hover .contact-icon { background: var(--primary); color: #fff; }
.contact-info-item:hover .contact-info-text { color: var(--text-primary); }

.contact-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(13,110,253,0.1);
  border: 1px solid var(--border-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.1rem;
  transition: var(--transition);
  flex-shrink: 0;
}

.contact-info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.contact-info-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

/* Form */
.form-group { margin-bottom: 20px; }

.form-control-custom {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 13px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
  font-family: inherit;
}

.form-control-custom::placeholder { color: var(--text-muted); }

.form-control-custom:focus {
  border-color: var(--primary);
  background: rgba(13,110,253,0.06);
  box-shadow: 0 0 0 3px rgba(13,110,253,0.15);
}

.form-label-custom {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  display: block;
  text-transform: uppercase;
}

textarea.form-control-custom { resize: vertical; min-height: 130px; }

.btn-submit {
  width: 100%;
  background: var(--gradient-blue);
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(13,110,253,0.4);
}

.alert-custom {
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  display: none;
  margin-top: 14px;
}

.alert-success-custom {
  background: rgba(32,201,151,0.1);
  border: 1px solid rgba(32,201,151,0.3);
  color: var(--success);
}

.alert-error-custom {
  background: rgba(220, 53, 69, 0.1);
  border: 1px solid rgba(220, 53, 69, 0.3);
  color: #f87171;
}

/* ---- Footer ---- */
footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 40px 0 24px;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 10px;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 16px; }

.footer-link {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-link:hover { color: var(--primary); }

.footer-divider {
  border-color: var(--border);
  margin: 24px 0;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}

/* ---- Floating Buttons ---- */
.btn-float-whatsapp {
  position: fixed;
  bottom: 80px; right: 24px;
  width: 52px; height: 52px;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: var(--transition);
  z-index: 990;
}

.btn-float-whatsapp:hover {
  transform: scale(1.12);
  color: #fff;
  box-shadow: 0 6px 28px rgba(37,211,102,0.5);
}

.btn-back-top {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 52px; height: 52px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(13,110,253,0.4);
  transition: var(--transition);
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

.btn-back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.btn-back-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(13,110,253,0.5);
}

/* ---- Utilities ---- */
.text-gradient {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-section-alt { background: #0d0d14; }

/* AOS custom */
[data-aos] { pointer-events: none; }
[data-aos].aos-animate { pointer-events: auto; }

/* ---- Responsive ---- */
@media (max-width: 991px) {
  section { padding: 70px 0; }

  .hero-photo-ring { width: 260px; height: 260px; }
  .hero-photo { width: 236px; height: 236px; }
  .hero-photo-placeholder { width: 236px; height: 236px; }

  .timeline { padding-left: 24px; }
  .timeline-dot { left: -24px; }

  .stat-item { border-right: none; border-bottom: 1px solid var(--border); padding: 16px 0; }
  .stat-item:last-child { border-bottom: none; }
}

@media (max-width: 767px) {
  .hero-name { font-size: 2rem; }
  .hero-buttons { gap: 10px; }
  .btn-primary-custom, .btn-outline-custom { padding: 11px 20px; font-size: 0.85rem; }
  .edu-card { flex-direction: column; }
  .about-card { padding: 24px; }
  .contact-card { padding: 24px; }
  .hero-photo-wrapper { margin-top: 40px; }
}