/* ColloquiTeam · shell.css
   Shell applicativa: header, layout principale, indicatori di stato. */

#app-shell { min-height: 100vh; background: white; }

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: white;
  border-bottom: 1px solid var(--rule-soft);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.brand {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
  text-decoration: none;
  margin-right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.brand .accent { color: var(--accent); }
.brand-logo {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.header-nav {
  display: flex;
  gap: 6px;
  flex: 1;
}
.nav-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all .15s ease;
  letter-spacing: .02em;
}
.nav-link:hover { background: var(--paper); color: var(--accent); }
.nav-link.active { background: var(--accent-soft); color: var(--accent); }

/* ── Period picker (anno + trimestre globale) ── */
.period-picker {
  display: flex;
  gap: 4px;
  align-items: center;
}
.period-picker select {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 5px 22px 5px 10px;
  border: 1px solid var(--rule-soft);
  border-radius: 8px;
  background-color: var(--paper);
  background-image:
    linear-gradient(45deg, transparent 50%, var(--accent) 50%),
    linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 11px) 50%, calc(100% - 7px) 50%;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
  color: var(--ink);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: all .15s ease;
}
.period-picker select:hover { border-color: var(--accent); }
.period-picker select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.period-reset {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 5px 10px;
  border: 1px dashed var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  transition: all .15s ease;
  margin-left: 2px;
}
.period-reset:hover {
  background: var(--accent);
  color: white;
  border-style: solid;
}

.period-glossary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--rule-soft);
  background: transparent;
  color: var(--ink-mute);
  font-size: 13px;
  cursor: help;
  margin-left: 2px;
  transition: all .15s ease;
}
.period-glossary:hover {
  background: var(--paper);
  color: var(--accent);
  border-color: var(--accent);
}

.period-picker select:disabled {
  opacity: .85;
  cursor: not-allowed;
  background-image: none;
  padding-right: 10px;
}

.save-status {
  font-size: 12px;
  color: var(--ink-mute);
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}
.save-status .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--sage);
  transition: background .2s;
}
.save-status.dirty .dot { background: var(--amber); }
.save-status.saving .dot { background: var(--accent); animation: pulse 1s ease infinite; }

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 6px 14px;
  background: var(--paper);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}
.role-badge {
  font-size: 10px;
  letter-spacing: .1em;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  font-weight: 700;
}
.role-badge.admin { background: var(--sage); color: white; }
.role-badge.user { background: var(--accent-soft); color: var(--accent); }
.logout-btn {
  background: white;
  border: 1px solid var(--rule-soft);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--ink-soft);
  cursor: pointer;
  font-weight: 600;
}
.logout-btn:hover { background: #fee2e2; color: #991b1b; border-color: #fca5a5; }

/* ── Firebase connection indicator ── */
.fb-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  letter-spacing: .02em;
}
.fb-status .fb-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-mute); }
.fb-status.connected { color: var(--sage); border-color: var(--sage-soft); }
.fb-status.connected .fb-dot { background: var(--sage); }
.fb-status.connecting { color: var(--amber); }
.fb-status.connecting .fb-dot { background: var(--amber); animation: pulse 1.2s ease infinite; }
.fb-status.error { color: #b91c1c; border-color: #fca5a5; background: #fef2f2; }
.fb-status.error .fb-dot { background: #b91c1c; }
.fb-status.offline { color: var(--ink-mute); }
.fb-status.offline .fb-dot { background: var(--ink-mute); }

/* ── Main layout ── */
.app-main { max-width: 1280px; margin: 0 auto; padding: 28px; }

.card {
  background: white;
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow-sm);
}