/* ==========================================
   1. CUSTOM PROPERTIES (VARIABLES)
   ========================================== */
:root {
  /* Paleta de colores - Dark Violet Theme */
  --deep-violet-black: #140a17;
  --violet: #5e157a;
  --violet-hover: #7a1d9b;
  --offwhite-violet: #f8f5fa;
  --soft-lavender: #f3ecf7;
  --text-light: #ffffff;
  --text-muted: #cfc6d6;
  --border-glass: rgba(255, 255, 255, 0.1);

  /* Variables temáticas adaptables */
  --bg-gradient-start: var(--deep-violet-black);
  --bg-gradient-mid: #1a0d22;
  --bg-gradient-end: var(--deep-violet-black);
  --card-bg: rgba(248, 245, 250, 0.05);
  --card-bg-hover: rgba(248, 245, 250, 0.08);
  --header-bg: rgba(20, 10, 23, 0.7);
  --header-bg-hover: rgba(20, 10, 23, 0.85);
}

/* Tema claro */
:root[data-theme="light"] {
  --deep-violet-black: #f8f5fa;
  --text-light: #1e293b;
  --text-muted: #64748b;
  --border-glass: rgba(94, 21, 122, 0.15);

  --bg-gradient-start: #ffffff;
  --bg-gradient-mid: #f8f5fa;
  --bg-gradient-end: #f3ecf7;
  --card-bg: rgba(255, 255, 255, 0.8);
  --card-bg-hover: rgba(255, 255, 255, 0.95);
  --header-bg: rgba(255, 255, 255, 0.8);
  --header-bg-hover: rgba(255, 255, 255, 0.95);
  --shadow-card: 0 8px 24px rgba(94, 21, 122, 0.15);
  --shadow-hover: 0 12px 32px rgba(94, 21, 122, 0.2);
}

/* Ajustes específicos para modo claro */
:root[data-theme="light"] .header__title {
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

:root[data-theme="light"] .profile-card__name {
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

:root[data-theme="light"] .projects__title {
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

:root[data-theme="light"] .footer {
  background: rgba(94, 21, 122, 0.1);
  color: var(--text-light);
}

:root[data-theme="light"] .tag {
  color: var(--violet);
  background: rgba(94, 21, 122, 0.15);
}

:root[data-theme="light"] .btn--primary {
  color: #ffffff !important;
}

/* ==========================================
   MODO DE ALTO CONTRASTE
   ========================================== */
:root[data-contrast="high"] {
  --text-light: #ffffff;
  --text-muted: #e2e8f0;
  --border-glass: rgba(255, 255, 255, 0.3);
  --card-bg: rgba(255, 255, 255, 0.1);
  --card-bg-hover: rgba(255, 255, 255, 0.15);
  --violet: #a855f7;
  --violet-hover: #c084fc;
}

:root[data-theme="light"][data-contrast="high"] {
  --text-light: #000000;
  --text-muted: #1e293b;
  --border-glass: rgba(0, 0, 0, 0.3);
  --card-bg: rgba(0, 0, 0, 0.05);
  --card-bg-hover: rgba(0, 0, 0, 0.1);
  --violet: #6d28d9;
  --violet-hover: #5b21b6;
}

/* Bordes más gruesos en alto contraste */
:root[data-contrast="high"] .project-card,
:root[data-contrast="high"] .profile-card,
:root[data-contrast="high"] .contact-form,
:root[data-contrast="high"] .filter,
:root[data-contrast="high"] .tag {
  border-width: 2px;
}

:root[data-contrast="high"] .btn {
  border-width: 3px;
}

/* Mayor contraste en sombras */
:root[data-contrast="high"] {
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(168, 85, 247, 0.6);
}

:root[data-theme="light"][data-contrast="high"] {
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 40px rgba(109, 40, 217, 0.4);
}

/* Textos más contrastados */
:root[data-contrast="high"] .profile-card__title,
:root[data-contrast="high"] .project-card__title,
:root[data-contrast="high"] .contact__title {
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Focus más visible */
:root[data-contrast="high"] *:focus-visible {
  outline-width: 3px;
  outline-offset: 3px;
}

/* ==========================================
   ACCESIBILIDAD - SKIP LINK
   ========================================== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--violet);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  text-decoration: none;
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid white;
  outline-offset: 2px;
}

/* Screen reader only - Ocultar visualmente pero accesible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================
   UX - SMOOTH SCROLL
   ========================================== */
html {
  scroll-behavior: smooth;
}

/* Respetar preferencias de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:root {
  /* Tipografía */
  --font-headings:
    "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body:
    "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Espaciados */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius - Modern UI */
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* Shadows - Soft & Deep */
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.28);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(94, 21, 122, 0.3);

  /* Transitions */
  --transition-base: 200ms ease-in-out;
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   2. MODERN CSS RESET
   ========================================== */
/* 1. Uso de modelo de caja predecible */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* 2. Eliminación de márgenes predeterminados del User Agent */
* {
  margin: 0;
}

/* 3. Renderizado base del documento heredando variables */
body {
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: linear-gradient(
    135deg,
    var(--bg-gradient-start) 0%,
    var(--bg-gradient-mid) 50%,
    var(--bg-gradient-end) 100%
  );
  background-attachment: fixed;
  color: var(--text-light);
  font-family: var(--font-body);
  min-height: 100vh;
  transition: background var(--transition-slow), color var(--transition-slow);
}

/* 4. Comportamiento responsivo estricto para elementos multimedia */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

/* 5. Herencia forzada de tipografía en controles de formulario */
input,
button,
textarea,
select {
  font: inherit;
}

/* 6. Prevención de desbordamiento horizontal en nodos de texto */
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}
/* ==========================================
   3. LAYOUT & BEM COMPONENTS
   ========================================== */

/* --- Block: Header (Glassmorphism) --- */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-glass);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all var(--transition-base);
  gap: var(--spacing-md);
}

.header:hover {
  background: var(--header-bg-hover);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

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

.header__logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: all var(--transition-base);
}

.header__logo-link:hover {
  transform: scale(1.03);
}

.header__logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: contain;
  flex-shrink: 0;
}

/* Logo claro visible en tema light, oculto en dark */
.header__logo--light {
  display: block;
}

.header__logo--dark {
  display: none;
}

:root[data-theme="dark"] .header__logo--light {
  display: none;
}

:root[data-theme="dark"] .header__logo--dark {
  display: block;
}

.header__title {
  font-size: 1.5rem;
  font-family: var(--font-headings);
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-light), var(--soft-lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__nav-list {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
  padding: 0;
}

.header__nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-pill);
  transition: all var(--transition-base);
  position: relative;
}

.header__nav-link:hover {
  color: var(--violet);
  background: rgba(94, 21, 122, 0.1);
  transform: translateY(-2px);
}

.header__nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--violet);
  border-radius: 2px;
  transition: transform var(--transition-base);
}

.header__nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* --- Block: Main Content --- */
.main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  min-height: 100vh;
}

/* --- Block: Profile Card (Glassmorphism) --- */
.profile-card {
  /* Glassmorphism Effect */
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-glass);

  /* Geometría y espaciado */
  max-width: 600px;
  width: 90%;
  margin: var(--spacing-2xl) auto;
  padding: var(--spacing-xl);

  /* Layout interno */
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-lg);

  /* Efecto hover con glassmorphism */
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.profile-card::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(
    135deg,
    var(--violet),
    transparent,
    var(--violet)
  );
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity var(--transition-slow);
  z-index: -1;
}

.profile-card:hover {
  box-shadow: var(--shadow-hover), var(--shadow-glow);
  transform: translateY(-4px) scale(1.01);
  background: var(--card-bg-hover);
}

.profile-card:hover::before {
  opacity: 0.3;
}

.profile-card__image {
  width: 100%;
  max-width: 220px;
  height: auto;
  border-radius: var(--radius);
  border: 3px solid rgba(94, 21, 122, 0.3);
  box-shadow: 0 4px 16px rgba(94, 21, 122, 0.2);
  transition: all var(--transition-slow);
}

.profile-card__image:hover {
  transform: scale(1.05);
  border-color: var(--violet);
  box-shadow: 0 8px 24px rgba(94, 21, 122, 0.4);
}

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

.profile-card__name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  font-family: var(--font-headings);
  background: linear-gradient(135deg, var(--text-light), var(--soft-lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  letter-spacing: -0.5px;
}

.profile-card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--violet);
  margin: var(--spacing-sm) 0 var(--spacing-md) 0;
  min-height: 1.5em;
  display: flex;
  align-items: center;
  gap: 2px;
}

#typing-text {
  display: inline-block;
}

.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: var(--violet);
  margin-left: 2px;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0;
  }
}

.profile-card__summary {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.profile-card__contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-glass);
}

.profile-card__email,
.profile-card__location,
.profile-card__linkedin {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin: 0;
}

.profile-card__linkedin a {
  color: var(--violet);
  text-decoration: none;
  transition: all var(--transition-base);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.profile-card__linkedin a:hover {
  color: var(--text-light);
  background: var(--violet);
  text-decoration: none;
}

/* Responsive: lado a lado en pantallas grandes */
@media (min-width: 768px) {
  .profile-card {
    max-width: 900px;
    flex-direction: row;
    text-align: left;
    gap: var(--spacing-xl);
    padding: var(--spacing-2xl);
  }

  .profile-card__image {
    max-width: 280px;
    flex-shrink: 0;
  }

  .profile-card__content {
    flex: 1;
  }

  .profile-card__name {
    font-size: var(--font-size-4xl);
  }

  .profile-card__summary {
    font-size: var(--font-size-lg);
  }
}

.footer {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background: rgba(20, 10, 23, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--border-glass);
  color: var(--text-muted);
  width: 100%;
  margin-top: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer__logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  opacity: 0.7;
  transition: all var(--transition-base);
}

.footer__logo:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* Logo claro visible en tema light, oculto en dark */
.footer__logo--light {
  display: inline-block;
}

.footer__logo--dark {
  display: none;
}

:root[data-theme="dark"] .footer__logo--light {
  display: none;
}

:root[data-theme="dark"] .footer__logo--dark {
  display: inline-block;
}

.footer__text {
  font-size: var(--font-size-sm);
  margin: 0;
}

/* ==========================================
   4. UTILITY: CONTAINER
   ========================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--spacing-md);
}

/* ==========================================
   5. BLOCK: PROJECTS SECTION
   ========================================== */
.projects {
  padding-block: var(--spacing-2xl);
  background: transparent;
}

.projects__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.projects__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  font-family: var(--font-headings);
  background: linear-gradient(135deg, var(--text-light), var(--soft-lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.5px;
}

.projects__lead {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
  max-width: 600px;
  margin-inline: auto;
}

/* --- Element: Projects Grid --- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

/* ==========================================
   6. BLOCK: PROJECT CARD (Glassmorphism)
   ========================================== */
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-slow);
  position: relative;
  animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(94, 21, 122, 0.1),
    transparent,
    rgba(94, 21, 122, 0.05)
  );
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

/* Efecto shimmer/shine al hacer hover */
.project-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  opacity: 0;
  transform: translateX(-100%) translateY(-100%) rotate(45deg);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-hover), var(--shadow-glow);
  background: var(--card-bg-hover);
  border-color: rgba(94, 21, 122, 0.3);
}

.project-card:hover::before {
  opacity: 1;
}

.project-card:hover::after {
  opacity: 1;
  transform: translateX(100%) translateY(100%) rotate(45deg);
}

.project-card:focus-within {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

/* --- Element: Card Media --- */
.project-card__media {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(94, 21, 122, 0.2),
    rgba(0, 0, 0, 0.4)
  );
}

.project-card__media--nolink {
  cursor: default;
}

.project-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  opacity: 0;
  transform: translateX(-100%);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  z-index: 1;
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), filter var(--transition-base);
  opacity: 0.9;
}

.project-card:hover .project-card__media::after {
  opacity: 1;
  transform: translateX(100%);
}

.project-card:hover .project-card__img {
  transform: scale(1.08) rotate(1deg);
  opacity: 1;
  filter: brightness(1.1);
}

/* --- Element: Card Body --- */
.project-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  flex: 1;
}

/* --- Element: Card Title --- */
.project-card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  font-family: var(--font-headings);
  line-height: 1.3;
}

.project-card__title-link {
  color: var(--text-light);
  text-decoration: none;
  transition: all var(--transition-base);
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  background-size: 0% 2px;
  background-repeat: no-repeat;
  background-position: left bottom;
}

.project-card__title-link:hover {
  background-size: 100% 2px;
  color: var(--soft-lavender);
}

.project-card__title-link:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* --- Element: Card Description --- */
.project-card__desc {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}

/* --- Element: Card Tags List --- */
.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  list-style: none;
  padding: 0;
  margin: 0;
}

/* --- Element: Card Actions --- */
.project-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: auto;
}

/* ==========================================
   7. BLOCK: TAG
   ========================================== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--soft-lavender);
  background: rgba(94, 21, 122, 0.2);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(94, 21, 122, 0.3);
  border-radius: var(--radius-pill);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.tag::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tag:hover {
  background: rgba(94, 21, 122, 0.4);
  border-color: var(--violet);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 4px 12px rgba(94, 21, 122, 0.3);
}

.tag:hover::before {
  opacity: 1;
}

/* ==========================================
   8. BLOCK: BUTTON (Pill-shaped & Modern)
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-headings);
  text-decoration: none;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-slow);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0)
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn:hover::before {
  opacity: 1;
}

.btn:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

/* --- Modifier: Primary Button --- */
.btn--primary {
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  color: var(--text-light);
  box-shadow: 0 4px 12px rgba(94, 21, 122, 0.3);
  position: relative;
  overflow: hidden;
}

.btn--primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.3) 0%,
    transparent 70%
  );
  opacity: 0;
  transform: scale(0);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn--primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow:
    0 8px 20px rgba(94, 21, 122, 0.5),
    var(--shadow-glow);
}

.btn--primary:hover::after {
  opacity: 1;
  transform: scale(2);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn--primary:active {
  transform: translateY(-1px) scale(1.02);
}

.btn--primary:active::after {
  opacity: 0.5;
  transform: scale(1.5);
  transition: all 0.1s ease-out;
}

/* --- State: Loading Button --- */
.btn.is-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
  cursor: not-allowed;
}

.btn.is-loading::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin: -8px 0 0 -8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* --- Modifier: Ghost Button --- */
.btn--ghost {
  background: rgba(248, 245, 250, 0.05);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: var(--text-light);
  border-color: var(--border-glass);
  position: relative;
  overflow: hidden;
}

.btn--ghost::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(94, 21, 122, 0.3),
    rgba(94, 21, 122, 0.1)
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn--ghost:hover {
  border-color: var(--violet);
  background: rgba(94, 21, 122, 0.15);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 4px 16px rgba(94, 21, 122, 0.2);
}

.btn--ghost:hover::after {
  opacity: 1;
}

/* ==========================================
   9. RESPONSIVE LAYER - MEDIA QUERIES
   ========================================== */

/* --- Botón toggle de navegación (oculto por defecto en desktop) --- */
.header__nav-toggle {
  display: none;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(94, 21, 122, 0.2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.header__nav-toggle:hover {
  background: rgba(94, 21, 122, 0.4);
  border-color: var(--violet);
}

.header__nav-toggle:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

/* Icono hamburguesa */
.header__nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 20px;
}

.header__nav-toggle-icon::before,
.header__nav-toggle-icon::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.header__nav-toggle-icon::before {
  width: 100%;
}

.header__nav-toggle-icon::after {
  width: 75%;
}

/* Animación del icono cuando el menú está abierto */
.header__nav-toggle[aria-expanded="true"] .header__nav-toggle-icon::before {
  transform: translateY(5px) rotate(45deg);
}

.header__nav-toggle[aria-expanded="true"] .header__nav-toggle-icon::after {
  width: 100%;
  transform: translateY(-5px) rotate(-45deg);
}

/* ==========================================
   TABLET: 900px y menores
   ========================================== */
@media (max-width: 900px) {
  /* Grid de proyectos: 2 columnas */
  .projects__grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: var(--spacing-md);
  }

  /* Tarjeta de perfil más compacta */
  .profile-card {
    max-width: 700px;
  }

  /* Ajustes de tipografía */
  .projects__title {
    font-size: var(--font-size-2xl);
  }
}

/* ==========================================
   MÓVIL: 700px y menores
   ========================================== */
@media (max-width: 700px) {
  /* Header: activar menú colapsable */
  .header {
    flex-wrap: wrap;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header__title {
    font-size: 1.25rem;
  }

  /* Mostrar botón toggle */
  .header__nav-toggle {
    display: inline-flex;
  }

  /* Ocultar lista por defecto */
  .header__nav-list {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-glass);
  }

  /* Mostrar lista cuando está abierta */
  .header__nav-list.is-open {
    display: flex;
  }

  /* Links de navegación en móvil */
  .header__nav-link {
    width: 100%;
    padding: var(--spacing-md);
    text-align: center;
    background: rgba(94, 21, 122, 0.1);
    border-radius: var(--radius-md);
  }

  .header__nav-link:hover {
    background: rgba(94, 21, 122, 0.2);
  }

  .header__nav-link::after {
    display: none;
  }

  /* Tarjeta de perfil: siempre vertical en móvil */
  .profile-card {
    max-width: 100%;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) auto;
  }

  .profile-card__name {
    font-size: var(--font-size-xl);
  }

  .profile-card__summary {
    font-size: var(--font-size-sm);
  }

  /* Proyectos: 1 columna */
  .projects {
    padding-block: var(--spacing-xl);
  }

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

  .projects__title {
    font-size: var(--font-size-xl);
  }

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

  /* Tarjetas de proyecto más compactas */
  .project-card__body {
    padding: var(--spacing-md);
  }

  .project-card__title {
    font-size: var(--font-size-lg);
  }

  .project-card__desc {
    font-size: var(--font-size-sm);
  }

  /* Botones más grandes para móvil (tap targets) */
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    min-height: 44px;
  }

  .tag {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  /* Container con más padding */
  .container {
    padding-inline: var(--spacing-sm);
  }
}

/* ==========================================
   MÓVIL PEQUEÑO: 480px y menores
   ========================================== */
@media (max-width: 480px) {
  .header__title {
    font-size: 1.1rem;
  }

  .profile-card {
    padding: var(--spacing-md);
  }

  .profile-card__image {
    max-width: 180px;
  }

  .project-card__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* ==========================================
   10. LANGUAGE TOGGLE BUTTON
   ========================================== */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 44px;
  padding: 0 var(--spacing-md);
  background: rgba(94, 21, 122, 0.2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.lang-toggle:hover {
  background: rgba(94, 21, 122, 0.4);
  border-color: var(--violet);
  transform: scale(1.05);
}

.lang-toggle:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.lang-toggle__text {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* ==========================================
   11. THEME TOGGLE BUTTON
   ========================================== */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(94, 21, 122, 0.2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  background: rgba(94, 21, 122, 0.4);
  border-color: var(--violet);
  transform: scale(1.1);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.theme-toggle__icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

.theme-toggle[aria-pressed="true"] .theme-toggle__icon {
  transform: rotate(180deg);
}

/* Iconos SVG inline */
.theme-toggle__icon--sun {
  display: none;
}

.theme-toggle__icon--moon {
  display: block;
}

:root[data-theme="light"] .theme-toggle__icon--sun {
  display: block;
}

:root[data-theme="light"] .theme-toggle__icon--moon {
  display: none;
}

/* ==========================================
   11B. CONTRAST TOGGLE BUTTON
   ========================================== */
.contrast-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 44px;
  height: 44px;
  padding: 0 var(--spacing-sm);
  background: rgba(94, 21, 122, 0.2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.contrast-toggle:hover {
  background: rgba(94, 21, 122, 0.4);
  border-color: var(--violet);
  transform: scale(1.1);
}

.contrast-toggle:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.contrast-toggle__icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

.contrast-toggle__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.contrast-toggle[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  border-color: var(--violet);
}

.contrast-toggle[aria-pressed="true"] .contrast-toggle__icon {
  transform: rotate(180deg);
}

/* ==========================================
   12. LANGUAGE SWITCHING
   ========================================== */
/* Ocultar por defecto elementos de texto con data-lang (no el html root) */
span[data-lang],
p[data-lang],
strong[data-lang],
.tag[data-lang] {
  display: none !important;
}

/* Mostrar elementos inline según idioma activo */
:root[data-lang="es"] span[data-lang="es"],
:root[data-lang="es"] strong[data-lang="es"] {
  display: inline !important;
}

:root[data-lang="en"] span[data-lang="en"],
:root[data-lang="en"] strong[data-lang="en"] {
  display: inline !important;
}

/* Mostrar elementos block según idioma activo */
:root[data-lang="es"] p[data-lang="es"] {
  display: block !important;
}

:root[data-lang="en"] p[data-lang="en"] {
  display: block !important;
}

/* Mostrar tags (inline-flex) según idioma activo */
:root[data-lang="es"] .tag[data-lang="es"] {
  display: inline-flex !important;
}

:root[data-lang="en"] .tag[data-lang="en"] {
  display: inline-flex !important;
}

/* ==========================================
   13. PROJECT FILTERS
   ========================================== */
.projects__count {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
  transition: opacity 0.3s ease;
}

.projects__count strong {
  color: var(--violet);
  font-weight: 600;
}

.projects__filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.filter {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: rgba(94, 21, 122, 0.1);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  color: var(--text-light);
  font-weight: 500;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.filter::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.filter:hover {
  background: rgba(94, 21, 122, 0.2);
  border-color: var(--violet);
  transform: translateY(-2px) scale(1.05);
}

.filter:hover::before {
  opacity: 1;
}

.filter:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.filter:active {
  transform: translateY(0) scale(0.98);
  transition: all 0.1s ease-out;
}

.filter.is-active {
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  border-color: var(--violet);
  box-shadow: 0 4px 12px rgba(94, 21, 122, 0.4);
  transform: translateY(-2px);
}

.filter.is-active::before {
  opacity: 0.3;
}

/* Empty state - Sin resultados */
.projects__empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  min-height: 300px;
  animation: fadeIn var(--transition-slow);
}

.projects__empty[hidden] {
  display: none !important;
}

.projects__empty-icon {
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
  opacity: 0.6;
}

.projects__empty-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.projects__empty-text {
  color: var(--text-muted);
  font-size: var(--font-size-base);
  max-width: 400px;
}

/* Animación de tarjetas filtradas */
.project-card[hidden] {
  display: none;
}

.project-card {
  animation: fadeIn var(--transition-slow);
}

/* Transición suave al mostrar/ocultar grid */
.projects__grid {
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.projects__grid.is-filtering {
  opacity: 0.4;
  transform: scale(0.98);
  filter: blur(2px);
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animaciones escalonadas para tarjetas */
.project-card:nth-child(1) {
  animation-delay: 0.1s;
}

.project-card:nth-child(2) {
  animation-delay: 0.2s;
}

.project-card:nth-child(3) {
  animation-delay: 0.3s;
}

.project-card:nth-child(4) {
  animation-delay: 0.4s;
}

.project-card:nth-child(5) {
  animation-delay: 0.5s;
}

.project-card:nth-child(6) {
  animation-delay: 0.6s;
}

/* ==========================================
   14. CONTACT SECTION & FORM
   ========================================== */
.contact {
  padding: var(--spacing-2xl) 0;
  background: transparent;
}

.contact__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.contact__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-light), var(--soft-lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact__lead {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Layout de dos columnas: info izquierda / formulario derecha */
.contact__body {
  display: flex;
  gap: var(--spacing-2xl);
  align-items: flex-start;
}

/* Formulario con glassmorphism */
.contact-form {
  flex: 1;
  min-width: 0;
  order: 2;
  margin: 0;
  padding: var(--spacing-xl);
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-slow);
}

.contact-form:hover {
  background: var(--card-bg-hover);
  box-shadow: var(--shadow-hover);
}

/* Campos del formulario */
.form-field {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.required {
  color: var(--violet);
  margin-left: 2px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  position: relative;
}

.form-input:hover,
.form-textarea:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(94, 21, 122, 0.3);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--violet);
  background: rgba(255, 255, 255, 0.08);
  box-shadow:
    0 0 0 3px rgba(94, 21, 122, 0.2),
    0 4px 12px rgba(94, 21, 122, 0.1);
  transform: translateY(-1px);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Validación de campos */
.form-input.is-invalid,
.form-textarea.is-invalid {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus {
  border-color: #ef4444;
  box-shadow:
    0 0 0 3px rgba(239, 68, 68, 0.2),
    0 4px 12px rgba(239, 68, 68, 0.1);
}

.form-input.is-valid,
.form-textarea.is-valid {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.05);
}

.form-input.is-valid:focus,
.form-textarea.is-valid:focus {
  border-color: #22c55e;
  box-shadow:
    0 0 0 3px rgba(34, 197, 94, 0.2),
    0 4px 12px rgba(34, 197, 94, 0.1);
}

/* Mensajes de error */
.form-error {
  display: block;
  color: #ef4444;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  min-height: 1.2em;
  opacity: 0;
  transform: translateY(-4px);
  transition: all var(--transition-base);
}

.form-error.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Estado del formulario */
.form-status {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  display: none;
  align-items: center;
  gap: var(--spacing-md);
}

.form-status.success {
  display: flex;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
}

.form-status.error {
  display: flex;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.form-status__animation {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
}

.form-status__text {
  flex: 1;
}

.btn--large {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

/* Información de contacto alternativa */
.contact__info {
  flex: 0 0 280px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
  gap: var(--spacing-lg);
  order: 1;
}

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

.contact__info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact__icon {
  color: var(--violet);
  flex-shrink: 0;
}

.contact__link {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-base);
}

.contact__link:hover {
  color: var(--violet);
}

/* Responsive */
@media (max-width: 700px) {
  .contact__body {
    flex-direction: column;
  }
  .contact__info {
    flex: 1;
    width: 100%;
  }
}

/* ==========================================
   15. PARTICLES BACKGROUND (Canvas)
   ========================================== */
#particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none; /* No interferir con clics en la página */
  opacity: 0.6;
}

/* Ocultar en móviles para mejor performance */
@media (max-width: 768px) {
  #particles-bg {
    display: none;
  }
}

/* Ocultar si prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  #particles-bg {
    display: none;
  }
}

/* ==========================================
   16. SCROLL ANIMATIONS (IntersectionObserver)
   ========================================== */

/* Estado inicial: oculto y desplazado hacia abajo */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estado visible: cuando entra en viewport */
.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delays escalonados para efecto cascada */
.fade-in-up:nth-child(1) { transition-delay: 0ms; }
.fade-in-up:nth-child(2) { transition-delay: 100ms; }
.fade-in-up:nth-child(3) { transition-delay: 200ms; }
.fade-in-up:nth-child(4) { transition-delay: 300ms; }

/* Respetar preferencias de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================
   17. PROJECT MODAL
   ========================================== */
.project-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.project-modal[hidden] {
  display: none;
}

.project-modal.is-open {
  opacity: 1;
  visibility: visible;
}

/* Overlay de fondo */
.project-modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  cursor: pointer;
}

/* Contenedor del modal */
.project-modal__container {
  position: relative;
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  z-index: 1001;
  transform: scale(0.9) translateY(30px);
  transition: transform var(--transition-normal);
}

.project-modal.is-open .project-modal__container {
  transform: scale(1) translateY(0);
}

/* Botón de cerrar */
.project-modal__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-light);
  transition: all var(--transition-fast);
  z-index: 1002;
}

.project-modal__close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.project-modal__close:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

/* Contenido del modal */
.project-modal__content {
  padding: var(--spacing-2xl);
}

/* Imagen del proyecto */
.project-modal__media {
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.project-modal__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Cuerpo del modal */
.project-modal__body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Título */
.project-modal__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-light);
  margin: 0;
}

/* Descripción */
.project-modal__description {
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 1.0625rem;
}

/* Tecnologías */
.project-modal__tech-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.project-modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  list-style: none;
  padding: 0;
  margin: 0;
}

.project-modal__tags .tag {
  font-size: 0.875rem;
}

/* Acciones */
.project-modal__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Links extra (publicaciones múltiples) */
.project-modal__extra-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-glass);
}

.project-modal__extra-link {
  color: var(--violet);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-base), padding-left var(--transition-base);
}

/* ==========================================
   INTERESTS SECTION
   ========================================== */
.interests {
  padding: var(--spacing-2xl) 0;
}

.interests__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.interests__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-light);
  margin: 0 0 var(--spacing-sm);
  background: linear-gradient(135deg, var(--text-light) 40%, var(--violet-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.interests__lead {
  color: var(--text-muted);
  font-size: var(--font-size-base);
}

/* Bento grid */
.interests__bento {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--spacing-lg);
}

.interests__card--sports  { grid-column: 1; grid-row: 1; }
.interests__card--hobbies { grid-column: 2; grid-row: 1; }
.interests__card--travel  { grid-column: 1 / -1; grid-row: 2; }

.interests__card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Card header */
.interests__card-head {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--violet-hover);
}

.interests__card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-light);
  margin: 0;
}

/* Active sport */
.interests__active-sport {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(94, 21, 122, 0.15);
  border: 1px solid rgba(94, 21, 122, 0.3);
  border-radius: var(--radius);
  padding: var(--spacing-sm) var(--spacing-md);
}

.interests__active-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  background: var(--violet);
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.interests__active-name {
  font-weight: 600;
  color: var(--text-light);
  font-size: var(--font-size-base);
}

/* Past sports */
.interests__past-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin: 0;
}

.interests__sport-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.interests__pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 999px;
  padding: 4px 12px;
  transition: color 0.2s, border-color 0.2s;
}

.interests__pill:hover {
  color: var(--text-light);
  border-color: rgba(94, 21, 122, 0.4);
}

/* Achievements */
.interests__achievements {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: auto;
}

.interests__trophy {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  border-left: 3px solid transparent;
}

.interests__trophy--gold   { border-left-color: #f5c842; background: rgba(245, 200, 66, 0.07); }
.interests__trophy--bronze { border-left-color: #cd7f32; background: rgba(205, 127, 50, 0.07); }

.interests__medal {
  font-size: 1.3rem;
  font-weight: 800;
  min-width: 36px;
  text-align: center;
  line-height: 1;
}

.interests__medal--gold   { color: #f5c842; }
.interests__medal--bronze { color: #cd7f32; }

.interests__trophy-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.interests__trophy-info strong {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-light);
}

.interests__trophy-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Hobbies */
.interests__card--hobbies {
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 200px;
}

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

.interests__hobby-icon {
  color: var(--violet-hover);
  opacity: 0.8;
}

.interests__hobby-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-light);
}

/* Travel */
.interests__card--travel {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.interests__card--travel .interests__card-head {
  flex-shrink: 0;
}

.interests__travel-body {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  flex: 1;
  flex-wrap: wrap;
}

.interests__travel-stat {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.interests__stat-num {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.interests__stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  max-width: 100px;
  line-height: 1.4;
}

.interests__destinations {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.interests__dest {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-light);
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 6px 14px;
  transition: border-color 0.2s, background 0.2s;
}

.interests__dest:hover {
  border-color: rgba(94, 21, 122, 0.4);
  background: var(--card-bg-hover);
}

.interests__dest svg { color: var(--violet-hover); flex-shrink: 0; }

/* Responsive */
@media (max-width: 768px) {
  .interests__bento {
    grid-template-columns: 1fr;
  }

  .interests__card--sports,
  .interests__card--hobbies,
  .interests__card--travel {
    grid-column: 1;
    grid-row: auto;
  }

  .interests__card--travel {
    flex-direction: column;
    align-items: flex-start;
  }

  .interests__travel-body {
    gap: var(--spacing-md);
  }
}

/* ==========================================
   CAROUSEL — modal
   ========================================== */
.modal-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--card-bg);
}

.modal-carousel__slide {
  display: none;
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.modal-carousel__slide.is-active {
  display: block;
}

.modal-carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(20, 10, 23, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s;
  padding: 0;
}

.modal-carousel__btn:hover {
  background: rgba(94, 21, 122, 0.85);
}

.modal-carousel__btn--prev { left: 8px; }
.modal-carousel__btn--next { right: 8px; }

.modal-carousel__dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 8px 0 2px;
}

:root[data-theme="light"] .modal-carousel__btn {
  background: rgba(255, 255, 255, 0.8);
  color: var(--violet);
  border-color: rgba(94, 21, 122, 0.2);
}

:root[data-theme="light"] .modal-carousel__btn:hover {
  background: rgba(255, 255, 255, 0.95);
}

/* ==========================================
   CAROUSEL — project card media
   ========================================== */
.project-card__media--carousel {
  position: relative;
  overflow: hidden;
  cursor: default;
}

.carousel__slide {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel__slide.is-active {
  display: block;
}

/* Prev / Next buttons */
.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(20, 10, 23, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.3rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.2s, background 0.2s;
  padding: 0;
}

.project-card__media--carousel:hover .carousel__btn {
  opacity: 1;
}

.carousel__btn:hover {
  background: rgba(94, 21, 122, 0.8);
}

.carousel__btn--prev { left: 8px; }
.carousel__btn--next { right: 8px; }

/* Dots */
.carousel__dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  z-index: 10;
}

.carousel__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}

.carousel__dot.is-active {
  background: #fff;
  transform: scale(1.35);
}

/* Light mode: darker dots on light bg */
:root[data-theme="light"] .carousel__dot {
  background: rgba(94, 21, 122, 0.35);
}

:root[data-theme="light"] .carousel__dot.is-active {
  background: var(--violet);
}

:root[data-theme="light"] .carousel__btn {
  background: rgba(255, 255, 255, 0.75);
  color: var(--violet);
  border-color: rgba(94, 21, 122, 0.2);
}

:root[data-theme="light"] .carousel__btn:hover {
  background: rgba(255, 255, 255, 0.95);
}

.project-modal__extra-link:hover {
  color: var(--violet-hover);
  padding-left: 4px;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 700px) {
  .project-modal__content {
    padding: var(--spacing-xl);
  }

  .project-modal__title {
    font-size: 1.5rem;
  }

  .project-modal__close {
    top: 1rem;
    right: 1rem;
  }

  .project-modal__actions {
    flex-direction: column;
  }

  .project-modal__actions .btn {
    width: 100%;
  }
}

/* Scrollbar del modal */
.project-modal__container::-webkit-scrollbar {
  width: 8px;
}

.project-modal__container::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}

.project-modal__container::-webkit-scrollbar-thumb {
  background: var(--violet);
  border-radius: 4px;
}

.project-modal__container::-webkit-scrollbar-thumb:hover {
  background: var(--violet-hover);
}

/* ==========================================
   18. TIMELINE / TRAYECTORIA
   ========================================== */
.timeline-section {
  padding: var(--spacing-3xl) 0;
}

.timeline-section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.timeline-section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--violet), var(--violet-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.timeline-section__lead {
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

.timeline-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
}

/* Timeline vertical */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--violet), transparent);
  opacity: 0.4;
}

.timeline__item {
  position: relative;
  padding-left: 60px;
  margin-bottom: var(--spacing-xl);
  transition: opacity var(--transition-base);
}

.timeline__item[hidden] {
  display: none;
}

.timeline__marker {
  position: absolute;
  left: 0;
  top: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  border: 2px solid var(--border-glass);
  backdrop-filter: blur(8px);
  z-index: 1;
}

.timeline__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--violet);
}

.timeline__icon--academic { color: #22c55e; }
.timeline__icon--cert { color: #f59e0b; }
.timeline__icon--pub { color: #06b6d4; }
.timeline__icon--work { color: var(--violet); }

.timeline__content {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
}

.timeline__img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  float: right;
  margin: 0 0 var(--spacing-sm) var(--spacing-md);
  background: var(--card-bg);
}

@media (max-width: 480px) {
  .timeline__img {
    width: 52px;
    height: 52px;
  }
}

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

.timeline__year {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-weight: 500;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.timeline__badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: var(--spacing-sm);
}

.timeline__badge--work { background: rgba(139, 92, 246, 0.15); color: var(--violet); }
.timeline__badge--academic { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.timeline__badge--cert { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.timeline__badge--pub { background: rgba(6, 182, 212, 0.15); color: #06b6d4; }

.timeline__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

.timeline__desc {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.timeline__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.timeline__link {
  font-size: var(--font-size-sm);
  color: var(--violet);
  text-decoration: none;
  display: inline-block;
  transition: color var(--transition-base);
  margin-right: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.timeline__link:hover {
  color: var(--violet-hover);
  text-decoration: underline;
}

.timeline__tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  margin-right: 4px;
  margin-top: var(--spacing-sm);
}

/* ==========================================
   19. SCROLL TO TOP BUTTON
   ========================================== */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  color: var(--text-light);
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: all var(--transition-normal);
}

.scroll-to-top[hidden] {
  display: none;
}

.scroll-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow:
      0 8px 20px rgba(0, 0, 0, 0.3),
      0 0 0 0 rgba(94, 21, 122, 0.4);
  }
  50% {
    box-shadow:
      0 8px 20px rgba(0, 0, 0, 0.3),
      0 0 0 8px rgba(94, 21, 122, 0);
  }
}

.scroll-to-top:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--violet);
  box-shadow: 0 12px 28px rgba(94, 21, 122, 0.4);
  transform: translateY(-4px) scale(1.05);
}

.scroll-to-top:active {
  transform: translateY(-2px) scale(0.95);
}

.scroll-to-top:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.scroll-to-top svg {
  width: 24px;
  height: 24px;
  stroke-width: 2.5;
}

/* Responsive */
@media (max-width: 700px) {
  .scroll-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 48px;
    height: 48px;
  }

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