/* ===================================
   VARIABLES CSS - SISTEMA DE DISEÑO
   =================================== */
:root {
  /* Colores principales */
  --primary-color: #06b6d4;
  --primary-dark: #0891b2;
  --primary-light: #22d3ee;

  --secondary-color: #8b5cf6;
  --secondary-dark: #7c3aed;

  --accent-color: #f59e0b;
  --accent-dark: #d97706;

  /* Colores de fondo - Modo claro */
  --bg-color: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;

  /* Colores de texto - Modo claro */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;

  /* Colores de borde */
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Tipografía */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Tamaños de fuente */
  --fs-xs: 0.75rem;
  /* 12px */
  --fs-sm: 0.875rem;
  /* 14px */
  --fs-base: 1rem;
  /* 16px */
  --fs-lg: 1.125rem;
  /* 18px */
  --fs-xl: 1.25rem;
  /* 20px */
  --fs-2xl: 1.5rem;
  /* 24px */
  --fs-3xl: 1.875rem;
  /* 30px */
  --fs-4xl: 2.25rem;
  /* 36px */
  --fs-5xl: 3rem;
  /* 48px */
  --fs-6xl: 3.75rem;
  /* 60px */

  /* Pesos de fuente */
  --fw-light: 300;
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* Espaciado */
  --spacing-xs: 0.5rem;
  /* 8px */
  --spacing-sm: 0.75rem;
  /* 12px */
  --spacing-md: 1rem;
  /* 16px */
  --spacing-lg: 1.5rem;
  /* 24px */
  --spacing-xl: 2rem;
  /* 32px */
  --spacing-2xl: 3rem;
  /* 48px */
  --spacing-3xl: 4rem;
  /* 64px */
  --spacing-4xl: 6rem;
  /* 96px */

  /* Bordes */
  --radius-sm: 0.375rem;
  /* 6px */
  --radius-md: 0.5rem;
  /* 8px */
  --radius-lg: 0.75rem;
  /* 12px */
  --radius-xl: 1rem;
  /* 16px */
  --radius-full: 9999px;

  /* Transiciones */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Layout */
  --container-width: 1200px;
  --header-height: 4rem;

  /* Z-index */
  --z-fixed: 100;
  --z-modal: 1000;
}

/* Modo oscuro */
body.dark-theme {
  --bg-color: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;

  --border-color: #334155;
  --border-hover: #475569;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-color);
  transition: background-color var(--transition-base), color var(--transition-base);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  line-height: 1.2;
  color: var(--text-primary);
}

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

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

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

ul {
  list-style: none;
}

/* ===================================
   UTILIDADES DE LAYOUT
   =================================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media screen and (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

.section {
  padding: var(--spacing-3xl) 0;
}

@media screen and (min-width: 768px) {
  .section {
    padding: var(--spacing-4xl) 0;
  }
}

.section__title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  text-align: center;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media screen and (min-width: 768px) {
  .section__title {
    font-size: var(--fs-4xl);
  }
}

.section__subtitle {
  display: block;
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--fs-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Animaciones de entrada */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease-out forwards;
}

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

/* ===================================
   HEADER Y NAVEGACIÓN
   =================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-color);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.nav {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
}

.nav__logo .accent {
  color: var(--primary-color);
}

.nav__menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 75%;
  height: 100vh;
  background-color: var(--bg-secondary);
  padding: var(--spacing-3xl) var(--spacing-xl);
  transition: right var(--transition-base);
  box-shadow: var(--shadow-xl);
}

.nav__menu.show-menu {
  right: 0;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.nav__link {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  font-weight: var(--fw-medium);
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width var(--transition-base);
}

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

.nav__close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  font-size: var(--fs-2xl);
  color: var(--text-primary);
  padding: var(--spacing-xs);
}

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

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
  transform: scale(1.05);
}

.theme-toggle__icon {
  display: none;
}

body:not(.dark-theme) .theme-toggle__icon--light {
  display: block;
}

body.dark-theme .theme-toggle__icon--dark {
  display: block;
}

.nav__toggle {
  font-size: var(--fs-2xl);
  color: var(--text-primary);
  padding: var(--spacing-xs);
}

/* Navegación desktop */
@media screen and (min-width: 768px) {
  .nav__menu {
    position: static;
    width: auto;
    height: auto;
    background-color: transparent;
    padding: 0;
    box-shadow: none;
  }

  .nav__list {
    flex-direction: row;
    gap: var(--spacing-xl);
  }

  .nav__link {
    font-size: var(--fs-base);
  }

  .nav__close,
  .nav__toggle {
    display: none;
  }
}

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

.hero__container {
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero__content {
  text-align: center;
}

.hero__greeting {
  display: inline-block;
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.hero__title {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-extrabold);
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--fs-xl);
  color: var(--text-secondary);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-md);
}

.hero__description {
  font-size: var(--fs-lg);
  color: var(--text-tertiary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.8;
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

.hero__image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
}

.hero__img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary-color);
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-base);
}

.hero__img:hover {
  transform: scale(1.05);
}

/* Floating badges */
.hero__badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  z-index: 10;
  animation: float 3s ease-in-out infinite;
}

.hero__badge svg {
  color: var(--primary-color);
  flex-shrink: 0;
}

.hero__badge--1 {
  top: 5%;
  right: -5%;
  animation-delay: 0s;
}

.hero__badge--2 {
  bottom: 15%;
  right: -10%;
  animation-delay: 1s;
}

.hero__badge--3 {
  top: 50%;
  right: -12%;
  animation-delay: 2s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* Hide badges on mobile */
@media screen and (max-width: 767px) {
  .hero__badge {
    display: none;
  }
}

@keyframes blob {

  0%,
  100% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }

  50% {
    border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
  }
}

.hero__scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-tertiary);
  animation: bounce 2s infinite;
}

@keyframes bounce {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  40% {
    transform: translateX(-50%) translateY(-10px);
  }

  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* Hero responsive */
@media screen and (min-width: 768px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
  }

  .hero__content {
    text-align: left;
  }

  .hero__title {
    font-size: var(--fs-5xl);
  }

  .hero__description {
    margin-left: 0;
  }

  .hero__cta {
    flex-direction: row;
    justify-content: flex-start;
  }

  .hero__img {
    width: 400px;
    height: 400px;
  }
}

@media screen and (min-width: 1024px) {
  .hero__title {
    font-size: var(--fs-6xl);
  }
}

/* ===================================
   BOTONES
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-xl);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left var(--transition-base);
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn--secondary:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about__content {
  max-width: 800px;
  margin: 0 auto;
}

.about__text {
  background-color: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.about__description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.about__description:last-of-type {
  margin-bottom: var(--spacing-xl);
}

.about__description strong {
  color: var(--text-primary);
  font-weight: var(--fw-semibold);
}

.about__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.about__info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
}

.about__info-item svg {
  color: var(--primary-color);
  flex-shrink: 0;
}

/* CV Download Button */
.about__cta {
  margin-top: var(--spacing-xl);
  display: flex;
  justify-content: center;
}

.about__cta .btn svg {
  width: 20px;
  height: 20px;
}

@media screen and (min-width: 768px) {
  .about__text {
    padding: var(--spacing-2xl);
  }
}

/* ===================================
   SKILLS SECTION
   =================================== */
.skills__content {
  display: grid;
  gap: var(--spacing-2xl);
  max-width: 900px;
  margin: 0 auto;
}

.skills__group {
  background-color: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.skills__group:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.skills__group-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.skills__group-title svg {
  color: var(--primary-color);
}

.skills__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.skill {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.skill__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.skill__name {
  font-weight: var(--fw-medium);
  color: var(--text-primary);
}

.skill__level {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
}

.skill__bar {
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill__progress {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1s ease-out;
}

/* Herramientas */
.tools__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tool__badge {
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  transition: all var(--transition-fast);
}

.tool__badge:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  transform: translateY(-2px);
}

/* Soft Skills */
.soft-skills__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.soft-skill {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
}

.soft-skill svg {
  color: var(--primary-color);
  flex-shrink: 0;
}

@media screen and (min-width: 768px) {
  .skills__content {
    grid-template-columns: 1fr;
  }

  .skills__group {
    padding: var(--spacing-2xl);
  }
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects__grid {
  display: grid;
  gap: var(--spacing-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.project__card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.project__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.project__image {
  position: relative;
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  overflow: hidden;
}

.project__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
}

.project__content {
  padding: var(--spacing-xl);
}

.project__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.project__description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.project__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tech__tag {
  padding: 4px var(--spacing-sm);
  background-color: var(--bg-tertiary);
  color: var(--primary-color);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
}

.project__learning {
  padding: var(--spacing-sm);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  border-left: 3px solid var(--primary-color);
}

.project__learning strong {
  color: var(--text-primary);
}

.project__links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.project__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  transition: all var(--transition-fast);
}

.project__link:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.project__link--demo {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.project__link--demo:hover {
  opacity: 0.9;
}

@media screen and (min-width: 768px) {
  .projects__grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  }

  .project__image {
    height: 250px;
  }
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */
.experience__container {
  max-width: 800px;
  margin: 0 auto;
}

/* Timeline - Vertical Layout */
.timeline {
  position: relative;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.timeline__item {
  position: relative;
  margin-bottom: var(--spacing-2xl);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__marker {
  position: absolute;
  left: calc(-1 * var(--spacing-xl) - 6px);
  top: 0;
  width: 14px;
  height: 14px;
  background-color: var(--primary-color);
  border-radius: 50%;
  border: 3px solid var(--bg-color);
  box-shadow: 0 0 0 4px var(--bg-secondary);
}

.timeline__content {
  background-color: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
}

.timeline__content:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

/* Mobile hover */
@media screen and (max-width: 767px) {
  .timeline__content:hover {
    transform: translateX(8px);
  }
}

.timeline__date {
  display: inline-block;
  font-size: var(--fs-sm);
  color: var(--primary-color);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-xs);
}

.timeline__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.timeline__subtitle {
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.timeline__description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  font-size: var(--fs-sm);
}

.timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.timeline__tag {
  padding: 4px var(--spacing-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-tertiary);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
}

/* Learning Section */
/* Courses & Certifications */
.courses {
  background-color: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  margin-top: var(--spacing-2xl);
}

.courses__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.courses__title svg {
  color: var(--accent-color);
}

.courses__grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}

@media screen and (min-width: 768px) {
  .courses__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.course__card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.course__card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.course__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.course__icon svg {
  color: white;
}

.course__content {
  flex: 1;
}

.course__name {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.course__platform {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-sm);
}

.course__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.course__tag {
  padding: 4px var(--spacing-sm);
  background-color: var(--bg-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border: 1px solid var(--border-color);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact__content {
  max-width: 700px;
  margin: 0 auto;
}

.contact__description {
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--fs-lg);
  line-height: 1.8;
  margin-bottom: var(--spacing-2xl);
}

.contact__cards {
  display: grid;
  gap: var(--spacing-lg);
}

.contact__card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.contact__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.contact__card:hover .contact__card-icon {
  background-color: white;
  color: var(--primary-color);
}

.contact__card:hover .contact__card-title,
.contact__card:hover .contact__card-data {
  color: white;
}

.contact__card-icon {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
  color: var(--primary-color);
  border-radius: var(--radius-md);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.contact__card-content {
  flex: 1;
}

.contact__card-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-tertiary);
  margin-bottom: 4px;
  transition: color var(--transition-fast);
}

.contact__card-data {
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

@media screen and (min-width: 768px) {
  .contact__cards {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

/* ===================================
   FOOTER
   =================================== */
.footer {
  background-color: var(--bg-secondary);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-color);
}

.footer__content {
  text-align: center;
}

.footer__copy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  color: var(--text-tertiary);
  font-size: var(--fs-sm);
}

.footer__copy svg {
  color: var(--accent-color);
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {

  0%,
  100% {
    transform: scale(1);
  }

  10%,
  30% {
    transform: scale(1.1);
  }

  20%,
  40% {
    transform: scale(1);
  }
}

/* ===================================
   ESTADOS DE ACCESIBILIDAD
   =================================== */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ===================================
   UTILIDADES
   =================================== */
.accent {
  color: var(--primary-color);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}