/* ============================================
   ENGINEERING — Dedicated page styles
   ============================================ */

.eng-hero {
  padding: 140px 0 40px;
  text-align: center;
}

.eng-hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.eng-hero__subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto 36px;
}

.nav__link--active {
  color: #fff !important;
}

/* ---- AUTH (hero section) ---- */

.eng-auth {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.eng-auth__login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: #000;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.eng-auth__login:hover {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.eng-auth__login svg {
  flex-shrink: 0;
}

.eng-auth__user {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: #000;
}

.eng-auth__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.eng-auth__name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.eng-auth__signout {
  margin-left: 4px;
  padding: 4px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-dim);
  font-family: var(--font-body);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.2s;
}

.eng-auth__signout:hover {
  border-color: var(--color-red, #e53e3e);
  color: var(--color-red, #e53e3e);
}

/* ---- LAYOUT (articles + roadmap sidebar) ---- */

.eng-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

.eng-layout__content {
  min-width: 0;
}

.eng-layout__sidebar {
  position: sticky;
  top: 88px;
}

/* ---- ROADMAP ---- */

.roadmap {
  background: linear-gradient(180deg, var(--color-bg-card), var(--color-bg));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.roadmap__title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.roadmap__list {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}

/* Vertical timeline line */
.roadmap__list::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
  border-radius: 1px;
}

.roadmap__item {
  display: flex;
  gap: 14px;
  padding: 8px 0;
  position: relative;
}

.roadmap__item:first-child {
  padding-top: 0;
}

.roadmap__item:last-child {
  padding-bottom: 0;
}

.roadmap__status {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  border-radius: 50%;
  position: relative;
  z-index: 1;
}

.roadmap__item--done .roadmap__status {
  color: var(--color-green);
  background: var(--color-bg);
  border: 2px solid var(--color-green);
  font-size: 0.65rem;
}

.roadmap__item--progress .roadmap__status {
  color: var(--color-accent-light);
  background: var(--color-accent-glow);
  border: 2px solid var(--color-accent-light);
  font-size: 0.6rem;
  box-shadow: 0 0 8px var(--color-accent-glow);
}

.roadmap__item--planned .roadmap__status {
  color: var(--color-text-dim);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  font-size: 0.55rem;
}

.roadmap__item strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
}

.roadmap__item--done strong {
  color: var(--color-text);
}

.roadmap__item--progress strong {
  color: var(--color-accent-light);
}

.roadmap__item--planned strong {
  color: var(--color-text-dim);
}

.roadmap__detail {
  display: block;
  font-size: 0.72rem;
  color: var(--color-text-dim);
  margin-top: 2px;
  font-family: var(--font-mono);
}

/* ---- EMPTY STATE ---- */

.eng-empty {
  text-align: center;
  padding: 64px 24px;
  color: var(--color-text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---- COMMENTS ---- */

.comments {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.comments__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.comment {
  display: flex;
  gap: 10px;
  padding: 10px 0;
}

.comment__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
}

.comment__body {
  flex: 1;
  min-width: 0;
}

.comment__header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}

.comment__name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
}

.comment__date {
  font-size: 0.72rem;
  color: var(--color-text-dim);
}

.comment__text {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* Comment form */
.comments__form {
  margin-top: 12px;
}

.comments__form textarea {
  width: 100%;
  min-height: 60px;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  resize: vertical;
  transition: border-color 0.2s;
}

.comments__form textarea:focus {
  border-color: var(--color-accent);
}

.comments__form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.comments__login-prompt {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
}

.comments__login-prompt p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin: 0;
}

.comments__login-btn {
  font-size: 0.85rem;
}

/* ---- NOT FOR EVERYONE ---- */

.eng-audience {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.eng-audience__text {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

/* ---- COLLABORATION ---- */

.eng-collab__desc {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.02rem;
  line-height: 1.75;
  margin-bottom: 36px;
}

.eng-collab__areas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.eng-collab__area {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
}

.eng-collab__area h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.eng-collab__area p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.eng-collab__cta {
  text-align: center;
}

/* ============================================
   ENGINEERING — Section label style (left-aligned)
   ============================================ */

.eng-section__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 10px;
}

.eng-section__title {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}

.eng-section__subtitle {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 640px;
  margin-bottom: 32px;
}

/* ============================================
   STATUS DASHBOARD
   ============================================ */

.eng-status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.eng-status-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s;
}

.eng-status-card:hover {
  border-color: var(--color-border-hover);
}

.eng-status-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.eng-status-card__title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.eng-status-badge {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.eng-status-badge--active {
  color: var(--color-green);
  background: var(--color-green-dim);
  border: 1px solid rgba(0, 206, 201, 0.3);
}

.eng-status-badge--progress {
  color: var(--color-yellow);
  background: rgba(255, 165, 2, 0.1);
  border: 1px solid rgba(255, 165, 2, 0.3);
}

.eng-status-badge--planned {
  color: var(--color-text-dim);
  background: transparent;
  border: 1px solid var(--color-border);
}

.eng-status-card__bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.eng-status-card__fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

.eng-status-card__fill--high {
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
}

.eng-status-card__fill--mid {
  background: linear-gradient(90deg, #e6780a, var(--color-yellow));
}

.eng-status-card__fill--low {
  background: linear-gradient(90deg, #c0392b, var(--color-red));
}

.eng-status-card__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.eng-status-card__desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  line-height: 1.4;
}

.eng-status-card__pct {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
}

.eng-status-note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  text-align: center;
  padding-top: 8px;
}

/* ============================================
   ADR CARDS
   ============================================ */

.eng-adr-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.eng-adr {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s;
}

.eng-adr[open] {
  border-color: rgba(108, 92, 231, 0.35);
}

.eng-adr summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
  transition: background 0.15s;
}

.eng-adr summary::-webkit-details-marker { display: none; }
.eng-adr summary::marker { display: none; }

.eng-adr summary:hover {
  background: rgba(108, 92, 231, 0.04);
}

.eng-adr__chevron {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--color-text-dim);
  transition: transform 0.2s;
  margin-left: auto;
}

.eng-adr[open] .eng-adr__chevron {
  transform: rotate(90deg);
}

.eng-adr__summary-content {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.eng-adr__id {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-dim);
  flex-shrink: 0;
}

.eng-adr__title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
}

.eng-adr__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.eng-adr-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
}

.eng-adr-badge--accepted {
  color: var(--color-green);
  background: var(--color-green-dim);
  border: 1px solid rgba(0, 206, 201, 0.3);
}

.eng-adr-badge--proposed {
  color: var(--color-yellow);
  background: rgba(255, 165, 2, 0.1);
  border: 1px solid rgba(255, 165, 2, 0.3);
}

.eng-adr-badge--superseded {
  color: var(--color-text-dim);
  background: transparent;
  border: 1px solid var(--color-border);
}

.eng-adr__date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-dim);
}

.eng-adr__body {
  padding: 0 22px 22px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.eng-adr__section {
  padding-top: 16px;
}

.eng-adr__section h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 8px;
}

.eng-adr__section p,
.eng-adr__section ul {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.eng-adr__section ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.eng-adr__section ul li::before {
  content: '→ ';
  color: var(--color-accent-light);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.eng-adr__section a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: rgba(162, 155, 254, 0.4);
}

.eng-adr__cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.eng-adr__cons-col h5 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 6px;
}

.eng-adr__cons-col--pos h5 { color: var(--color-green); }
.eng-adr__cons-col--neg h5 { color: var(--color-red); }

/* ============================================
   STACK GRID
   ============================================ */

.eng-stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.eng-stack-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.2s;
}

.eng-stack-card:hover {
  border-color: var(--color-border-hover);
}

.eng-stack-card__top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 2px;
}

.eng-stack-card__icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
}

.eng-stack-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
}

.eng-stack-card__role {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-light);
}

.eng-stack-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================
   DEVLOG
   ============================================ */

.eng-devlog-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 28px;
}

.eng-devlog-list::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
  border-radius: 1px;
}

.eng-devlog-entry {
  position: relative;
  padding-bottom: 32px;
}

.eng-devlog-entry:last-child {
  padding-bottom: 0;
}

.eng-devlog-entry::before {
  content: '';
  position: absolute;
  left: -25px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 8px var(--color-accent-glow);
  z-index: 1;
}

.eng-devlog-entry__date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-dim);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.eng-devlog-entry__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.eng-devlog-entry__items {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.eng-devlog-entry__items li {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding-left: 14px;
  position: relative;
}

.eng-devlog-entry__items li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--color-text-dim);
}

/* ============================================
   BOTTOM CTA
   ============================================ */

.eng-page-cta {
  text-align: center;
  padding: 48px 0 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.eng-page-cta a {
  color: var(--color-accent-light);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 900px) {
  .eng-status-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .eng-hero {
    padding: 100px 0 40px;
  }

  .eng-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .eng-layout__sidebar {
    position: static;
    order: -1;
  }

  .eng-collab__areas {
    grid-template-columns: 1fr;
  }

  .eng-status-grid {
    grid-template-columns: 1fr;
  }

  .eng-adr__cons {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .eng-stack-grid {
    grid-template-columns: 1fr;
  }

  .eng-adr summary {
    flex-wrap: wrap;
    gap: 8px;
  }

  .eng-adr__meta {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .eng-adr__summary-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}