body {
  display: flex;
  flex-direction: column;
}

#app {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.page {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Nav ── */

#nav {
  padding: var(--s3) calc(var(--s4) * 1.5);
  border-bottom: var(--border-width) solid var(--f2-border);
  display: flex;
  align-items: center;
  gap: calc(var(--s4) * 2);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: var(--s4);
}

.nav-link {
  text-decoration: none;
  padding: var(--s1) var(--s2);
  color: var(--text);
}

.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--text); border-bottom: 2px solid var(--primary); }

/* ── Dashboard ── */

.dashboard {
  padding: calc(var(--s4) * 2);
  overflow-y: auto;
}

.dashboard section {
  margin-bottom: calc(var(--s4) * 2);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--s4);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--s4);
}

.card {
  background: var(--f3-bg);
  border: var(--border-width) solid var(--f3-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card.clickable { cursor: pointer; }
.card.clickable:hover { border-color: var(--primary); }

.card-image {
  aspect-ratio: 1;
  background: var(--f2-bg);
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: var(--s3);
  display: flex;
  flex-direction: column;
  gap: var(--s1);
}

.card-title-row {
  display: flex;
  align-items: center;
  gap: var(--s2);
}

.card-title {
  font-weight: bold;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-desc {
  display: -webkit-box;
  overflow: hidden;
}

.badge {
  padding: var(--s1) var(--s2);
  background: var(--f1-bg);
  border: var(--border-width) solid var(--f2-border);
  white-space: nowrap;
  flex-shrink: 0;
}

.card.placeholder {
  border-style: dashed;
  align-items: center;
  justify-content: center;
}

/* ── Session Page ── */

.session-page {
  display: flex;
  flex-direction: column;
}

.session-header {
  padding: var(--s3) calc(var(--s4) * 1.5);
  border-bottom: var(--border-width) solid var(--f1-border);
  display: flex;
  align-items: center;
  gap: var(--s4);
  flex-shrink: 0;
}

.back-btn {
  background: none;
  border: none;
  padding: var(--s1) var(--s2);
}

.editable-title {
  cursor: pointer;
}

.editable-title:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
}

/* ── Placeholder Pages ── */

.placeholder-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s4);
}

.placeholder-icon {
  font-size: 4em;
}

/* ── Agent Form ── */

.agent-form {
  padding: calc(var(--s4) * 2);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  max-width: 600px;
}

.agent-form label {
  font-weight: bold;
}

.agent-form textarea {
  resize: vertical;
}

.agent-avatar-section {
  display: flex;
  align-items: center;
  gap: var(--s4);
}

.agent-avatar-preview {
  width: 64px;
  height: 64px;
  background: var(--f2-bg);
  border: var(--border-width) solid var(--f2-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2em;
  overflow: hidden;
  flex-shrink: 0;
}

.agent-avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.agent-form-actions {
  display: flex;
  gap: var(--s4);
  margin-top: var(--s4);
}

.danger-btn {
  color: #ff6b6b;
  border-color: #ff6b6b;
}

.danger-btn:hover {
  background: #ff6b6b;
  color: var(--f1-bg);
}