/* ── App Shell (extends landing page design tokens) ── */
.app-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.app-header .logo { color: var(--accent); font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.1rem; text-decoration: none; }
.app-nav { display: flex; gap: 4px; }
.app-nav a {
  color: var(--fg-secondary);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  transition: background 0.15s, color 0.15s;
}
.app-nav a:hover, .app-nav a.active { background: var(--accent-dim); color: var(--accent); }
.app-body { max-width: 1100px; margin: 0 auto; padding: 40px 40px; }
.page-title { font-family: 'Space Grotesk', sans-serif; font-size: 1.75rem; font-weight: 600; margin-bottom: 8px; }
.page-sub { color: var(--fg-secondary); margin-bottom: 32px; }

/* Cards */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 16px; }
.card-title { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.card-meta { color: var(--fg-secondary); font-size: 0.875rem; margin-bottom: 12px; }
.card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { background: var(--accent-dim); color: var(--accent); border: 1px solid var(--border-accent); padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; }
.status-badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 500; }
.status-pending { background: rgba(255,200,0,0.1); color: #ffc800; }
.status-submitted { background: rgba(0,212,255,0.1); color: var(--accent); }
.status-accepted { background: rgba(0,255,120,0.1); color: #00ff78; }
.status-rejected { background: rgba(255,80,80,0.1); color: #ff5050; }
.status-failed { background: rgba(255,80,80,0.1); color: #ff5050; }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.875rem; color: var(--fg-secondary); margin-bottom: 6px; font-weight: 500; }
.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--fg-primary);
  font-size: 0.9rem;
  font-family: 'DM Sans', sans-serif;
  transition: border-color 0.15s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus { outline: none; border-color: var(--accent); }
.form-textarea { resize: vertical; min-height: 100px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 8px; font-size: 0.9rem; font-weight: 500; cursor: pointer; border: none; transition: all 0.15s; }
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: #00e8ff; }
.btn-secondary { background: var(--bg-tertiary); color: var(--fg-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

/* Grid */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 768px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } .app-body { padding: 20px; } }

/* Stats row */
.stats-row { display: flex; gap: 32px; margin-bottom: 32px; }
.stat-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px 28px; }
.stat-value { font-family: 'Space Grotesk', sans-serif; font-size: 1.75rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.8rem; color: var(--fg-secondary); margin-top: 4px; }

/* Alert */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 20px; font-size: 0.875rem; }
.alert-error { background: rgba(255,80,80,0.1); border: 1px solid rgba(255,80,80,0.3); color: #ff7070; }
.alert-success { background: rgba(0,255,120,0.08); border: 1px solid rgba(0,255,120,0.2); color: #00ff78; }