/* ==========================================================================
   FEDERICO ÁLVAREZ - PORTAFOLIO WEB PROFESIONAL
   Estilos CSS Modernos, Variables CSS, Glassmorphism y Responsive Design
   ========================================================================== */

/* Variables del Sistema de Diseño (Tema Oscuro por defecto) */
:root {
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-code: 'JetBrains Mono', monospace;

  /* Paleta Oscura */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-alt: #0c1220;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(24, 33, 54, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(99, 102, 241, 0.5);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #6366f1;
  --accent-secondary: #06b6d4;
  --accent-glow: rgba(99, 102, 241, 0.35);
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
  --accent-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #9333ea 50%, #0891b2 100%);

  --card-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.5);
  --card-shadow-hover: 0 20px 40px -15px rgba(99, 102, 241, 0.25);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Paleta Clara */
body.light-theme {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-alt: #edf2f7;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(99, 102, 241, 0.5);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-primary: #4f46e5;
  --accent-secondary: #0891b2;
  --accent-glow: rgba(79, 70, 229, 0.2);
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.07);
  --card-shadow-hover: 0 20px 35px -10px rgba(79, 70, 229, 0.18);
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

ul {
  list-style: none;
}

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

/* Contenedor Común */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

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

/* Orbes de Fondo Ambientales */
.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  transition: opacity var(--transition-normal);
}

.orb-1 {
  width: 450px;
  height: 450px;
  top: -100px;
  right: -50px;
  background: radial-gradient(circle, #6366f1, transparent 70%);
}

.orb-2 {
  width: 500px;
  height: 500px;
  bottom: 20%;
  left: -150px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
}

.orb-3 {
  width: 350px;
  height: 350px;
  top: 45%;
  right: 10%;
  background: radial-gradient(circle, #a855f7, transparent 70%);
  opacity: 0.2;
}

body.light-theme .glow-orb {
  opacity: 0.15;
}

/* Tipografía de Encabezados y Secciones */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

.section-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 400;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   HEADER Y NAVEGACIÓN
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

body.light-theme .site-header {
  background: rgba(248, 250, 252, 0.85);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  padding: 0.2rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  font-family: var(--font-code);
  letter-spacing: -0.5px;
}

.logo-bracket {
  color: var(--accent-primary);
  font-weight: 700;
}

.logo-accent {
  color: var(--accent-secondary);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.4rem 0;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Botón Cambiador de Tema */
.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  transform: scale(1.05);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

.sun-icon {
  display: none;
}

.moon-icon {
  display: block;
}

body.light-theme .sun-icon {
  display: block;
}

body.light-theme .moon-icon {
  display: none;
}

/* Botón Menú Hamburguesa */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  z-index: 101;
}

.hamburger-bar {
  display: block;
  width: 100%;
  height: 2.5px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-toggle.open .hamburger-bar:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.nav-toggle.open .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open .hamburger-bar:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

/* ==========================================================================
   BOTONES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  white-space: nowrap;
  position: relative;
}

.btn-sm {
  padding: 0.5rem 1.15rem;
  font-size: 0.88rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: transparent;
}

.btn-outline:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.08);
}

.btn-outline svg,
.btn-primary svg,
.btn-secondary svg {
  width: 18px;
  height: 18px;
}

.btn-full {
  width: 100%;
}

/* ==========================================================================
   SECCIÓN HERO
   ========================================================================== */
.hero {
  padding-top: 8.5rem;
  padding-bottom: 4rem;
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
  margin-bottom: 4rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #10b981;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
}

.hero-title {
  font-size: clamp(2.4rem, 4.2vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

.social-link:hover {
  color: #ffffff;
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(99, 102, 241, 0.4);
}

/* Terminal Card / Hero Visual */
.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: '';
  position: absolute;
  inset: -10px;
  background: var(--accent-gradient);
  border-radius: var(--radius-lg);
  filter: blur(25px);
  opacity: 0.35;
  z-index: 0;
  transition: opacity var(--transition-normal);
}

.terminal-card {
  position: relative;
  z-index: 1;
  background: rgba(13, 17, 27, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  backdrop-filter: blur(20px);
}

body.light-theme .terminal-card {
  background: rgba(23, 28, 42, 0.96);
  color: #f8fafc;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-controls {
  display: flex;
  gap: 0.45rem;
}

.control-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: #94a3b8;
}

.terminal-action-btn {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-family: var(--font-code);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.4);
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.1);
  transition: all var(--transition-fast);
}

.terminal-action-btn:hover {
  background: #10b981;
  color: #ffffff;
}

.terminal-action-btn svg {
  width: 12px;
  height: 12px;
}

.terminal-body {
  padding: 1.25rem;
  font-family: var(--font-code);
  font-size: 0.86rem;
  line-height: 1.6;
  overflow-x: auto;
}

.token-keyword { color: #c084fc; font-weight: 600; }
.token-variable { color: #60a5fa; }
.token-property { color: #38bdf8; }
.token-string { color: #34d399; }
.token-boolean { color: #fb923c; }
.token-comment { color: #64748b; font-style: italic; }
.token-function { color: #f472b6; }

.terminal-footer {
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.25);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: #38bdf8;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.terminal-prompt {
  color: #a855f7;
  font-weight: 700;
}

/* ==========================================================================
   ESTADÍSTICAS
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(12px);
}

.stat-card {
  text-align: center;
  position: relative;
}

.stat-card:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-color);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.25rem;
}

/* ==========================================================================
   SECCIÓN SOBRE MÍ
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.about-bio p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

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

.about-highlights {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.highlight-icon {
  width: 20px;
  height: 20px;
  color: #10b981;
  background: rgba(16, 185, 129, 0.15);
  border-radius: 50%;
  padding: 3px;
  flex-shrink: 0;
}

.about-cards {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--card-shadow-hover);
}

.feature-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.feature-icon-wrapper svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

/* ==========================================================================
   SECCIÓN HABILIDADES
   ========================================================================== */
.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

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

.skill-cat-title {
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.cat-icon {
  font-size: 1.3rem;
}

.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skill-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.95rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

body.light-theme .skill-pill {
  background: rgba(0, 0, 0, 0.02);
}

.skill-pill:hover {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.skill-pill-name {
  font-size: 0.92rem;
  font-weight: 600;
}

.skill-pill-level {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-secondary);
  background: rgba(6, 182, 212, 0.12);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   SECCIÓN PROYECTOS
   ========================================================================== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.75rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.55rem 1.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.filter-btn.active {
  background: var(--accent-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--card-shadow-hover);
}

/* Animación y Mockups CSS para proyectos */
.project-image-box {
  background: #0f172a;
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem;
  position: relative;
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.mockup-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.mockup-url {
  font-family: var(--font-code);
  font-size: 0.72rem;
  color: #64748b;
  margin-left: 0.5rem;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.mockup-preview {
  height: 170px;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Vistas previas visuales modernas */
.preview-saas {
  background: linear-gradient(135deg, #1e1b4b, #0f172a);
  flex-direction: column;
  gap: 1rem;
}

.preview-chart {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  height: 80px;
  width: 70%;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 4px;
}

.chart-bar {
  flex: 1;
  background: rgba(99, 102, 241, 0.5);
  border-radius: 4px 4px 0 0;
  transition: all var(--transition-normal);
}

.chart-bar.active {
  background: var(--accent-gradient);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.7);
}

.preview-badge {
  font-family: var(--font-code);
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.preview-ecommerce {
  background: linear-gradient(135deg, #022c22, #064e3b);
}

.ecommerce-card-preview {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  padding: 1rem;
  width: 170px;
  text-align: center;
  backdrop-filter: blur(5px);
}

.ecommerce-card-img {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.ecommerce-card-line {
  height: 6px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 3px;
  margin-bottom: 0.75rem;
}

.ecommerce-card-btn {
  font-size: 0.7rem;
  font-weight: 700;
  background: #10b981;
  color: #ffffff;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.preview-kanban {
  background: linear-gradient(135deg, #18181b, #27272a);
  display: flex;
  gap: 1rem;
  padding: 1rem;
}

.kanban-col {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.kanban-tag {
  font-size: 0.68rem;
  color: #94a3b8;
  font-weight: 700;
}

.kanban-tag.active {
  color: #38bdf8;
}

.kanban-item {
  height: 24px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.kanban-item.active {
  background: rgba(56, 189, 248, 0.25);
  border: 1px solid rgba(56, 189, 248, 0.5);
}

.preview-agency {
  background: linear-gradient(135deg, #311042, #180928);
  flex-direction: column;
  gap: 0.75rem;
}

.agency-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: radial-gradient(circle, #f43f5e, #8b5cf6);
  box-shadow: 0 0 25px rgba(244, 63, 94, 0.6);
  animation: float-circle 3s infinite ease-in-out alternate;
}

@keyframes float-circle {
  0% { transform: translateY(-4px) scale(0.95); }
  100% { transform: translateY(4px) scale(1.05); }
}

.agency-title-mock {
  font-size: 0.8rem;
  letter-spacing: 2px;
  font-weight: 800;
  color: #f1f5f9;
}

.project-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-primary);
}

.project-link:hover {
  text-decoration: underline;
}

.project-link svg {
  width: 15px;
  height: 15px;
}

.project-link-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  transition: all var(--transition-fast);
}

.project-link-icon svg {
  width: 17px;
  height: 17px;
}

.project-link-icon:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
}

/* ==========================================================================
   SECCIÓN EXPERIENCIA (TIMELINE)
   ========================================================================== */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-primary);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  border-color: var(--accent-primary);
  transform: translateX(6px);
}

.timeline-date {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-secondary);
  background: rgba(6, 182, 212, 0.1);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.5rem;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.timeline-company {
  font-size: 0.92rem;
  color: var(--accent-primary);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.timeline-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.timeline-tags span {
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  color: var(--text-muted);
}

/* ==========================================================================
   SECCIÓN CONTACTO
   ========================================================================== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 3.5rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-info-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.contact-info-text {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.info-items {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.info-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.info-icon svg {
  width: 22px;
  height: 22px;
}

.info-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-value {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
}

.info-value:hover {
  color: var(--accent-primary);
}

.quick-email-card {
  margin-top: 1rem;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.quick-email-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

/* Formulario */
.contact-form-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(12px);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.required {
  color: #ef4444;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

body.light-theme .form-group input,
body.light-theme .form-group textarea {
  background: #ffffff;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  outline: none;
}

.form-group input.error,
.form-group textarea.error {
  border-color: #ef4444;
}

.error-msg {
  font-size: 0.75rem;
  color: #ef4444;
  min-height: 1rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 0 2.5rem 0;
  background: var(--bg-alt);
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 2.5rem;
  align-items: center;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-top: 0.6rem;
  max-width: 300px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-primary);
}

.footer-right {
  text-align: right;
}

.copyright {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.credits {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   TOAST & VOLVER ARRIBA
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #10b981;
  color: #ffffff;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.4);
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.toast-icon {
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.back-to-top {
  position: fixed;
  bottom: 25px;
  left: 25px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--card-shadow);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: all var(--transition-normal);
}

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

.back-to-top:hover {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  transform: translateY(-3px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-socials {
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .stat-card:nth-child(2)::after {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .skills-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .footer-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .footer-right {
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-card::after {
    display: none;
  }
}