/* ---- Layout shell ---- */
.app-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px;
}
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-outline);
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-header .logo { font-weight: 500; font-size: 18px; color: var(--color-on-surface); }
.app-header .logo .light { font-weight: 400; color: var(--color-on-surface-variant); }
.app-header nav { display: flex; gap: 16px; align-items: center; }

.layout-two-col {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
}
@media (max-width: 768px) {
  .layout-two-col { grid-template-columns: 1fr; }
  .side-rail { display: none; } /* mobile uses the bottom nav instead */
}

/* ---- Bottom nav (mobile) ---- */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-outline);
  justify-content: space-around;
  padding: 10px 0;
}
@media (max-width: 768px) {
  .bottom-nav { display: flex; }
  body { padding-bottom: 56px; }
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-outline);
  border-radius: var(--radius-base);
  padding: 14px;
  margin-bottom: 10px;
}

/* ---- Role badge pill ---- */
.role-pill {
  display: inline-block;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  margin-left: 6px;
  vertical-align: middle;
}
.tag-pill {
  display: inline-block;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  margin-right: 4px;
}
.status-free { background: var(--color-success-container); color: var(--color-success); }
.status-paid { background: var(--color-warning-container); color: var(--color-warning); }

/* ---- Buttons ---- */
.btn {
  font-family: inherit;
  font-size: 13px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-outline);
  background: var(--color-surface);
  color: var(--color-on-surface);
  cursor: pointer;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-filled { background: var(--color-primary); color: var(--color-on-primary); border: none; }
.btn-text { border: none; background: transparent; color: var(--color-primary); }

/* ---- Forms ---- */
input[type=text], input[type=search], textarea, select {
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: var(--radius-base);
  border: 1px solid var(--color-outline);
  background: var(--color-surface);
  color: var(--color-on-surface);
  width: 100%;
}
textarea { resize: vertical; min-height: 60px; }

/* ---- Post/article body ---- */
.post-body { font-size: 14px; line-height: 1.6; margin: 8px 0; white-space: pre-wrap; }
.post-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--color-on-surface-variant); }
.post-actions { display: flex; gap: 18px; font-size: 12px; color: var(--color-on-surface-variant); margin-top: 10px; }
.post-actions button { background: none; border: none; padding: 0; font: inherit; color: inherit; cursor: pointer; }
.edited-tag { font-size: 10px; color: var(--color-on-surface-variant); }

.avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 500; flex-shrink: 0;
}

.youtube-preview {
  display: flex; gap: 8px; align-items: center;
  border: 1px solid var(--color-outline);
  border-radius: var(--radius-base);
  padding: 8px; margin-top: 8px;
}
.youtube-preview .thumb {
  width: 64px; height: 40px; border-radius: 6px; flex-shrink: 0;
  background-size: cover; background-position: center;
}