/* ==========================================================================
   Reset base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--leading-relaxed);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Foco accesible, igual al del sitio de referencia */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--container-padding-y-mobile) var(--container-padding-x);
}

@media (min-width: 640px) {
  .container {
    padding-top: var(--container-padding-y-desktop);
    padding-bottom: var(--container-padding-y-desktop);
  }
}

.section {
  margin-bottom: var(--space-section-gap);
}

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

.section-title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-heading-gap);
}

/* ==========================================================================
   Links de texto (inline, dentro de párrafos/bio)
   ========================================================================== */

.link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration-line: underline;
  text-decoration-color: var(--color-link-underline);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition-base) var(--ease-out);
}

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

/* ==========================================================================
   Íconos (sprite SVG, ver <symbol> al inicio del <body>)
   ========================================================================== */

.icon-arrow {
  width: 1rem; /* 16px */
  height: 1rem;
  flex-shrink: 0;
  color: var(--color-text-tertiary);
  transition: color var(--transition-base) var(--ease-out);
}

/* ==========================================================================
   Intro
   ========================================================================== */

.intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-intro-gap);
  margin-bottom: var(--space-intro-section-gap);
}

.intro__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.intro__avatar {
  width: var(--avatar-size);
  height: var(--avatar-size);
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.intro__name {
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

.intro__role {
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
  line-height: var(--leading-snug);
}

.intro__bio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-bio-paragraph-gap);
}

.intro__bio {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   Proyectos (formato posteo)
   ========================================================================== */

.post-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-post-item-gap);
}

.post-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 -0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-xl);
  transition: background-color var(--transition-base) var(--ease-out);
}

.post-item:hover {
  background-color: var(--color-row-hover-bg);
}

.post-item__title {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-base) var(--ease-out);
}

.post-item:hover .post-item__title,
.post-item:hover .post-item__meta,
.post-item:hover .icon-arrow {
  color: var(--color-text-primary);
}

.post-item__meta {
  flex-shrink: 0;
  font-size: var(--text-base);
  color: var(--color-text-tertiary);
  white-space: nowrap;
  transition: color var(--transition-base) var(--ease-out);
}

/* ==========================================================================
   Educación
   ========================================================================== */

.edu-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-post-item-gap);
}

.edu-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 -0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-xl);
  transition: background-color var(--transition-base) var(--ease-out);
}

.edu-item:hover {
  background-color: var(--color-row-hover-bg);
}

.edu-item__left {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.edu-item__institution {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-base) var(--ease-out);
}

.edu-item:hover .edu-item__institution,
.edu-item:hover .edu-item__year,
.edu-item:hover .icon-arrow {
  color: var(--color-text-primary);
}

.edu-item__title {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.edu-item__year {
  flex-shrink: 0;
  font-size: var(--text-base);
  color: var(--color-text-tertiary);
  white-space: nowrap;
  transition: color var(--transition-base) var(--ease-out);
}

/* ==========================================================================
   Contacto
   ========================================================================== */

.link-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.link-list a {
  display: inline-block;
  width: fit-content;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration-line: underline;
  text-decoration-color: var(--color-link-underline);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition-base) var(--ease-out);
}

.link-list a:hover {
  text-decoration-color: var(--color-link-underline-hover);
}

/* ==========================================================================
   Página de detalle de proyecto
   ========================================================================== */

.back-link {
  display: inline-block;
  margin-bottom: var(--space-section-gap);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.project-detail__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-heading-gap);
}

.project-detail__meta {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-section-gap);
}

.project-detail__body p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-paragraph-gap);
}

.project-detail__body p:last-child {
  margin-bottom: 0;
}
