/* Access gate + username picker (§18.3) and the post-auth shell. */

.gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--s-4);
}

.gate-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--s-10) var(--s-8);
  text-align: center;
  animation: card-in var(--dur-popup) var(--ease-spring);
}

@keyframes card-in {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.gate-card .wordmark { font-size: 24px; margin-bottom: var(--s-2); }

.gate-card h1 {
  font: var(--weight-semibold) 24px/1.2 var(--font-display);
  letter-spacing: var(--tracking-snug);
  margin: var(--s-6) 0 var(--s-2);
}

.gate-card p.sub {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 var(--s-6);
}

.gate-card form { display: flex; flex-direction: column; gap: var(--s-3); }

.gate-card input#access-code,
.gate-card input#username {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 16px;
}

.field-hint {
  font-size: 12px;
  min-height: 18px;
  margin: 0;
  transition: color var(--dur-fast) var(--ease-out);
}
.field-hint.ok   { color: var(--ok); }
.field-hint.err  { color: var(--danger); }
.field-hint.idle { color: var(--text-tertiary); }

.shake { animation: shake 220ms var(--ease-in-out); }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-3px); }
  50%      { transform: translateX(3px); }
  75%      { transform: translateX(-3px); }
}

/* ---- Post-auth shell ---- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 64px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--s-8);
  background: var(--surface-glass);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--line);
}
.app-header .wordmark { font-size: 20px; white-space: nowrap; flex: none; }
.app-header button, .app-header a { white-space: nowrap; }
.btn-logout { display: inline-flex; align-items: center; gap: 6px; }
@media (max-width: 1500px) {
  .app-header .username { display: none; }  /* identity is on the Admin/logout side anyway */
  .ec2-label { display: none; }             /* status dot + buttons carry the state */
}
@media (max-width: 600px) {
  .app-header { padding: 0 var(--s-3); }
  .app-header .wordmark { font-size: 15px; }
  .app-header .user-area {
    gap: var(--s-2);
    flex: 1;
    flex-wrap: wrap;
    justify-content: flex-end;
    row-gap: var(--s-1);
  }
  .app-header .username { display: none; }            /* condensed header */
  .btn-logout .btn-label { display: none; }           /* icon-only logout */
  .btn-logout { padding: 8px; }
  .ec2-label { display: none; }                       /* dot + buttons only */
  .ec2-btn { padding: 4px 8px; font-size: 11px; }
  #ec2-widget {
    padding: 4px 8px;
    gap: var(--s-2);
    order: 5;               /* own row under the tabs — never crowds the controls */
    flex-basis: 100%;
    justify-content: flex-start;
    border: none;
    background: none;
    margin-bottom: var(--s-2);
  }
}
.app-header .user-area { display: flex; align-items: center; gap: var(--s-4); }
.app-header .username {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}
.app-header .btn-secondary { padding: 8px 14px; font-size: 13px; }

.empty-state {
  max-width: 520px;
  margin: 18vh auto 0;
  text-align: center;
  padding: 0 var(--s-4);
}
.empty-state h2 {
  font: var(--weight-semibold) 34px/1.12 var(--font-display);
  letter-spacing: var(--tracking-tight);
  margin: var(--s-6) 0 var(--s-3);
}
.empty-state p { color: var(--text-secondary); margin: 0; }
.empty-state svg { color: var(--text-tertiary); }

.hidden { display: none !important; }

/* ---- EC2 power widget (§16.10) + shutdown banner (§19.15) ---- */
#ec2-widget {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 4px 12px;
  background: var(--bg-elev-1);
}
.ec2-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-ok   { background: var(--ok); animation: dot-pulse 3s ease-in-out infinite; }
.dot-warn { background: var(--warn); animation: dot-pulse 1.2s ease-in-out infinite; }
.dot-off  { background: var(--text-tertiary); }
.dot-err  { background: var(--danger); }
@keyframes dot-pulse { 50% { opacity: 0.45; } }
.ec2-label { font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.ec2-actions { display: flex; gap: var(--s-2); }
.ec2-btn { padding: 5px 10px; font-size: 12px; border-radius: var(--r-sm); }
.ec2-btn.danger { color: var(--danger); border-color: var(--danger); }

#shutdown-banner {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  padding: 10px var(--s-4);
  background: rgba(178, 80, 0, 0.12);
  color: var(--warn);
  border-bottom: 1px solid var(--warn);
  font-size: 13px;
  font-weight: var(--weight-medium);
}
#shutdown-banner button {
  padding: 5px 12px;
  font-size: 12px;
  border-radius: var(--r-sm);
  background: var(--warn);
  color: #fff;
}