/* ============================================================
   Persona detail page — Brittany Chiang-style two-column layout:
     Left:  sticky sidebar (avatar, name, tagline, nav)
     Right: scrollable content sections
   --page-accent and --page-glow are injected per-persona by JS.
   ============================================================ */

/* ---- Page shell ------------------------------------------ */
.persona-page {
  display: flex;
  align-items: flex-start;
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 100vh;
  padding: 0 var(--space-8) 0 0;
  gap: var(--space-16);
}

/* ---- Sidebar --------------------------------------------- */
.persona-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  width: var(--sidebar-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-12) 0;
  overflow: hidden;
}

.persona-sidebar__back {
  margin-bottom: var(--space-8);
  align-self: flex-start;
}

.persona-sidebar__avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 2px solid var(--page-accent, var(--color-developer));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  overflow: hidden;
  margin-bottom: var(--space-6);
  box-shadow: 0 0 20px var(--page-glow, var(--glow-developer));
}

.persona-sidebar__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Name + tagline */
.persona-sidebar__name {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.1;
  margin-bottom: var(--space-3);
}

.persona-sidebar__tagline {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--page-accent, var(--color-developer));
  margin-bottom: var(--space-4);
  line-height: 1.3;
}

.persona-sidebar__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  max-width: 260px;
  line-height: 1.6;
  margin-bottom: var(--space-12);
}

/* ---- Sidebar nav ----------------------------------------- */
.sidebar-nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.sidebar-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-base);
}

.sidebar-nav__number {
  color: var(--page-accent, var(--color-developer));
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.sidebar-nav__line {
  display: block;
  height: 1px;
  width: 32px;
  background: currentColor;
  opacity: 0.3;
  transition: width var(--transition-base), opacity var(--transition-base);
}

.sidebar-nav__link:hover,
.sidebar-nav__link.is-active {
  color: var(--color-text-primary);
}

.sidebar-nav__link:hover .sidebar-nav__number,
.sidebar-nav__link.is-active .sidebar-nav__number {
  opacity: 1;
}

.sidebar-nav__link:hover .sidebar-nav__line,
.sidebar-nav__link.is-active .sidebar-nav__line {
  width: 56px;
  opacity: 1;
  background: var(--page-accent, var(--color-developer));
}

/* ---- Main content ---------------------------------------- */
.persona-main {
  flex: 1;
  padding: var(--space-12) 0 var(--space-24);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* ---- Section --------------------------------------------- */
.persona-section {
  scroll-margin-top: var(--space-12);
}

.persona-section__title {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-8);
  white-space: nowrap;
}

.persona-section__number {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--page-accent, var(--color-developer));
  font-weight: 400;
  flex-shrink: 0;
}

/* Horizontal rule after title */
.persona-section__title::after {
  content: '';
  display: block;
  height: 1px;
  width: 100%;
  background: var(--color-border);
}


/* ---- Experience ------------------------------------------ */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.exp-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-surface);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.exp-item:hover {
  border-color: var(--page-accent, var(--color-developer));
  box-shadow: var(--shadow-md);
}

/* Banner strip */
.exp-item__banner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
}

.exp-item__logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.exp-item__logo--fallback {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--page-accent, var(--color-developer));
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

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

.exp-item__company {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-primary);
}

.exp-item__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.exp-item__separator {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.exp-item__role {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--page-accent, var(--color-developer));
}

.exp-item__period {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
}

/* Body */
.exp-item__body {
  padding: var(--space-6);
}

.exp-item__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  text-align: justify;
}

.exp-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---- Tools grid ------------------------------------------ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}

.tools-category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  transition: border-color var(--transition-base);
}

.tools-category:hover {
  border-color: var(--page-accent, var(--color-developer));
}

.tools-category__name {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--page-accent, var(--color-developer));
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.tools-category__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---- Certifications -------------------------------------- */
.cert-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cert-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition-base), background var(--transition-base);
}

.cert-item:hover {
  background: var(--color-surface-elevated);
  border-color: var(--page-accent, var(--color-developer));
}

.cert-item__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.cert-item__logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.cert-item__logo--fallback {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--page-accent, var(--color-developer));
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.cert-item__info {
  flex: 1;
}

.cert-item__name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.cert-item__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
}

.cert-item__meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.cert-item__issuer {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.cert-item__separator {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.cert-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---- About ----------------------------------------------- */
.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-text__p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.8;
  text-align: justify;
}

/* ---- Languages ------------------------------------------- */
.lang-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}

.lang-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base);
}

.lang-item:hover {
  border-color: var(--page-accent, var(--color-developer));
}

.lang-item__flag {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.lang-item__flag--placeholder {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface-elevated);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.lang-item__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lang-item__name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

.lang-item__level {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--page-accent, var(--color-developer));
  letter-spacing: 0.04em;
}

/* ---- Interests ------------------------------------------- */
.interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-6);
}

.interest-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.interest-card:hover {
  border-color: var(--page-accent, var(--color-developer));
  box-shadow: var(--shadow-md);
}

.interest-card__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.interest-card__img--placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-surface-elevated);
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.interest-card__body {
  padding: var(--space-4) var(--space-6);
}

.interest-card__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.interest-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  text-align: justify;
}

/* ---- Responsive ------------------------------------------ */
@media (max-width: 900px) {
  .persona-page {
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-8);
  }

  .persona-sidebar {
    position: relative;
    height: auto;
    width: 100%;
    padding: var(--space-8) 0 0;
  }

  .persona-sidebar__desc {
    max-width: 100%;
  }

  .sidebar-nav {
    display: none; /* Hidden on mobile — user just scrolls */
  }
}