:root {
  --navy: #123a5c;
  --navy-dark: #0c2740;
  --accent: #1f7a5c;
  --accent-light: #e7f5ef;
  --warn: #b8860b;
  --warn-light: #fdf3d9;
  --danger: #b3261e;
  --danger-light: #fbe9e8;
  --gray-bg: #f4f6f8;
  --border: #dde3ea;
  --text: #1c2733;
  --text-muted: #5c6b7a;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--gray-bg); color: var(--text); }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-size: 16px; } /* evita el zoom automático de iOS al enfocar un campo */
.hidden { display: none !important; }
.mobile-back-btn {
  display: none; background: none; border: none; color: var(--navy); font-weight: 600;
  font-size: 13px; padding: 0; margin-bottom: 8px; cursor: pointer; align-self: flex-start;
}

/* ---- Login ---- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
}
.login-card {
  background: #fff;
  padding: 36px 40px;
  border-radius: 14px;
  width: 360px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-logo {
  display: block; width: 72px; height: 72px; object-fit: cover; border-radius: 50%;
  margin: 0 auto 14px; background: #fff; border: 3px solid var(--navy);
}
.login-card h1 { font-size: 20px; margin: 0 0 4px; color: var(--navy); text-align: center; }
.login-card .subtitle { margin: 0 0 20px; color: var(--text-muted); font-size: 13px; text-align: center; }
.login-card label { display: block; font-size: 12px; color: var(--text-muted); margin: 12px 0 4px; }
.login-card input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.login-card button[type=submit] {
  margin-top: 18px; width: 100%; padding: 11px; background: var(--navy); color: #fff;
  border: none; border-radius: 8px; font-size: 14px; font-weight: 600;
}
.login-error { color: var(--danger); font-size: 13px; margin-top: 10px; min-height: 16px; }
.demo-users { margin-top: 18px; font-size: 12px; color: var(--text-muted); }
.demo-users ul { padding-left: 18px; margin: 8px 0 0; }

/* ---- App shell ---- */
.app { height: 100vh; display: flex; flex-direction: column; }
.topbar {
  height: 56px; background: var(--navy); color: #fff; display: flex; align-items: center;
  justify-content: space-between; padding: 0 18px; flex-shrink: 0;
}
.brand { font-weight: 700; font-size: 15px; letter-spacing: 0.3px; display: flex; align-items: center; gap: 10px; }
.brand-logo {
  width: 32px; height: 32px; object-fit: cover; border-radius: 50%;
  background: #fff; border: 2px solid #4a9eff;
}
.topbar-right { display: flex; align-items: center; gap: 10px; }
.topbar-right button {
  background: rgba(255,255,255,0.12); color: #fff; border: none; padding: 8px 12px; border-radius: 7px; font-size: 13px;
}
.topbar-right button:hover { background: rgba(255,255,255,0.22); }
.topbar-menu-toggle { display: none; }
.topbar-menu { display: flex; align-items: center; gap: 10px; }
.topbar-menu-user { display: flex; flex-direction: column; align-items: flex-end; font-size: 12px; margin-left: 6px; }
.topbar-menu-user-info { display: contents; }
.topbar-menu-avatar, .topbar-menu-sep, .tm-icon { display: none; }
.role-pill { background: rgba(255,255,255,0.18); border-radius: 10px; padding: 1px 8px; margin-top: 2px; font-size: 10px; text-transform: uppercase; letter-spacing: 0.4px; }

.view-nav { display: flex; gap: 4px; background: rgba(255,255,255,0.08); padding: 4px; border-radius: 9px; }
.view-nav-btn { background: transparent; color: rgba(255,255,255,0.75); border: none; padding: 7px 14px; border-radius: 6px; font-size: 13px; font-weight: 500; }
.view-nav-btn:hover { background: rgba(255,255,255,0.1); }
.view-nav-btn.active { background: #fff; color: var(--navy); font-weight: 700; }

.notif-wrap { position: relative; }
.badge { background: var(--danger); color: #fff; border-radius: 10px; padding: 0 6px; font-size: 11px; margin-left: 4px; }
.notif-dropdown {
  position: absolute; right: 0; top: 42px; width: 340px; max-height: 420px; overflow-y: auto;
  background: #fff; color: var(--text); border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.25); z-index: 50;
}
.notif-item { padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 13px; cursor: pointer; }
.notif-item:hover { background: var(--gray-bg); }
.notif-item.unread { border-left: 3px solid var(--accent); background: #f2faf6; }
.notif-item .notif-time { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
.notif-empty { padding: 20px; text-align: center; color: var(--text-muted); font-size: 13px; }

/* ---- Layout ---- */
.layout { flex: 1; display: grid; grid-template-columns: 220px 340px 1fr; overflow: hidden; }
.sidebar { background: #fff; border-right: 1px solid var(--border); padding: 14px 10px; overflow-y: auto; }
.sidebar-item {
  display: flex; justify-content: space-between; align-items: center; padding: 9px 12px; border-radius: 8px;
  font-size: 13px; color: var(--text); cursor: pointer; margin-bottom: 2px;
}
.sidebar-item:hover { background: var(--gray-bg); }
.sidebar-item.active { background: var(--accent-light); color: var(--accent); font-weight: 600; }
.sidebar-item .count { font-size: 11px; color: var(--text-muted); }
.sidebar-section-title { font-size: 11px; text-transform: uppercase; color: var(--text-muted); margin: 14px 10px 6px; letter-spacing: 0.4px; }

.process-list-pane { border-right: 1px solid var(--border); background: var(--gray-bg); display: flex; flex-direction: column; overflow: hidden; }
.pane-header { padding: 14px; border-bottom: 1px solid var(--border); background: #fff; }
.pane-header h2 { margin: 0 0 8px; font-size: 15px; }
#search-box { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; }
.process-list { flex: 1; overflow-y: auto; padding: 10px; }

.process-card {
  background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; cursor: pointer;
  transition: box-shadow .12s, border-color .12s;
}
.process-card:hover { box-shadow: 0 3px 10px rgba(0,0,0,0.06); }
.process-card.selected { border-color: var(--navy); box-shadow: 0 0 0 2px rgba(18,58,92,0.15); }
.process-card .pc-top { display: flex; justify-content: space-between; align-items: flex-start; }
.process-card .pc-name { font-weight: 600; font-size: 14px; }
.process-card .pc-meta { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.status-badge { font-size: 10px; padding: 3px 8px; border-radius: 20px; white-space: nowrap; font-weight: 600; }

.detail-pane { display: flex; flex-direction: column; overflow: hidden; background: #fff; }
.empty-state { margin: auto; color: var(--text-muted); font-size: 14px; }

.detail-header { padding: 16px 20px; border-bottom: 1px solid var(--border); }
.detail-header h2 { margin: 0; font-size: 17px; }
.detail-header .status-badge { margin-top: 6px; display: inline-block; }
.detail-body { flex: 1; overflow-y: auto; padding: 16px 20px; display: grid; grid-template-columns: 1fr 320px; gap: 18px; }

.student-card { background: var(--gray-bg); border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 16px; }
.student-card h3 { margin: 0 0 10px; font-size: 13px; text-transform: uppercase; color: var(--text-muted); letter-spacing: .4px; }
.student-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.student-card-actions { display: flex; gap: 6px; flex-shrink: 0; }
.link-btn {
  background: none; border: 1px solid var(--border); color: var(--text-muted); font-size: 12px;
  padding: 4px 9px; border-radius: 7px; font-weight: 600;
}
.link-btn:hover { background: #fff; color: var(--text); }
.link-btn.danger { color: var(--danger); border-color: var(--danger-light); }
.link-btn.danger:hover { background: var(--danger-light); }
.student-card dl { display: grid; grid-template-columns: 120px 1fr; row-gap: 6px; margin: 0; font-size: 13px; }
.student-card dt { color: var(--text-muted); }
.student-card dd { margin: 0; font-weight: 500; }

.actions-box { background: var(--accent-light); border: 1px solid #bfe3d1; border-radius: 10px; padding: 14px; margin-bottom: 16px; }
.actions-box h3 { margin: 0 0 10px; font-size: 13px; color: var(--accent); }
.actions-box .row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.actions-box input, .actions-box select {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; flex: 1; min-width: 120px;
}
.actions-box button {
  background: var(--accent); color: #fff; border: none; padding: 9px 14px; border-radius: 7px; font-size: 13px; font-weight: 600;
}
.actions-box button.secondary { background: #fff; color: var(--accent); border: 1px solid var(--accent); }
.actions-box .hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.history-box { border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.history-box h3 { margin: 0 0 10px; font-size: 13px; text-transform: uppercase; color: var(--text-muted); letter-spacing: .4px; }
.history-item { font-size: 12px; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.history-item:last-child { border-bottom: none; }
.history-item .h-action { font-weight: 600; }
.history-item .h-meta { color: var(--text-muted); font-size: 11px; }

.chat-col { display: flex; flex-direction: column; border-left: 1px solid var(--border); padding-left: 18px; }
.chat-log { flex: 1; overflow-y: auto; max-height: 60vh; display: flex; flex-direction: column; gap: 10px; padding-bottom: 10px; }
.msg { max-width: 90%; padding: 8px 12px; border-radius: 10px; font-size: 13px; background: var(--gray-bg); }
.msg.system { background: #eef2f6; color: var(--text-muted); font-style: italic; align-self: center; text-align: center; max-width: 100%; }
.msg.mine { background: var(--navy); color: #fff; align-self: flex-end; }
.msg .msg-meta { font-size: 10px; opacity: .7; margin-bottom: 3px; }
.chat-input-row { display: flex; gap: 8px; padding-top: 10px; border-top: 1px solid var(--border); }
.chat-input-row input { flex: 1; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }
.chat-input-row button { background: var(--navy); color: #fff; border: none; padding: 9px 16px; border-radius: 8px; font-weight: 600; font-size: 13px; }

/* ---- Modal ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(10,20,30,0.45); display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal { background: #fff; border-radius: 12px; padding: 22px 26px; width: 420px; max-width: 90vw; max-height: 85vh; overflow-y: auto; }
.modal h2 { margin: 0 0 14px; font-size: 17px; }
.modal label { display: block; font-size: 12px; color: var(--text-muted); margin: 12px 0 4px; }
.modal input, .modal select, .modal textarea { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }
.modal .modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.modal .modal-actions button { padding: 9px 16px; border-radius: 8px; font-size: 13px; border: none; }
.modal .btn-primary { background: var(--navy); color: #fff; font-weight: 600; }
.modal .btn-cancel { background: var(--gray-bg); color: var(--text); }
.modal .close-x { position: absolute; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
.table th, .table td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
.table th { color: var(--text-muted); font-weight: 600; font-size: 11px; text-transform: uppercase; }

/* ---- Chat de equipo (estilo Slack) ---- */
.chat-layout { flex: 1; display: grid; grid-template-columns: 260px 1fr; overflow: hidden; }
.chat-sidebar { background: var(--navy-dark); color: #fff; padding: 14px 8px; overflow-y: auto; }
.chat-sidebar-section { font-size: 11px; text-transform: uppercase; color: rgba(255,255,255,0.5); letter-spacing: 0.5px; margin: 16px 10px 6px; }
.chat-sidebar-section:first-child { margin-top: 2px; }
.chat-item {
  display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-radius: 7px; font-size: 13.5px;
  color: rgba(255,255,255,0.85); cursor: pointer; margin-bottom: 1px; position: relative;
}
.chat-item:hover { background: rgba(255,255,255,0.08); }
.chat-item.active { background: var(--accent); color: #fff; font-weight: 600; }
.chat-item .chat-item-hash { opacity: 0.6; }
.chat-item .presence-dot { width: 8px; height: 8px; border-radius: 50%; background: #6b7785; flex-shrink: 0; }
.chat-item .presence-dot.online { background: #33d17a; }
.chat-item .chat-unread-dot { width: 8px; height: 8px; border-radius: 50%; background: #ff6b6b; margin-left: auto; flex-shrink: 0; }

.chat-main { display: flex; flex-direction: column; overflow: hidden; background: #fff; }
.chat-main-header { padding: 14px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.chat-header-clear {
  background: none; border: 1px solid var(--border); color: var(--danger); font-size: 12px; font-weight: 600;
  padding: 6px 10px; border-radius: 7px; cursor: pointer; flex-shrink: 0;
}
.chat-header-clear:hover { background: var(--danger-light); }
.chat-main-title { font-weight: 700; font-size: 15px; }
.chat-main-subtitle { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.chat-messages { flex: 1; overflow-y: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 2px; }
.chat-msg-group { margin-bottom: 14px; display: flex; gap: 10px; }
.chat-msg-avatar {
  width: 34px; height: 34px; border-radius: 8px; background: var(--navy); color: #fff; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
}
.chat-msg-body { flex: 1; min-width: 0; }
.chat-msg-meta { font-size: 13px; margin-bottom: 2px; }
.chat-msg-meta .chat-msg-name { font-weight: 700; color: var(--text); }
.chat-msg-meta .chat-msg-time { font-size: 11px; color: var(--text-muted); margin-left: 6px; }
.chat-msg-line { font-size: 14px; line-height: 1.5; color: var(--text); white-space: pre-wrap; }
.chat-send-form { display: flex; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--border); }
.chat-send-form input { flex: 1; padding: 10px 14px; border: 1px solid var(--border); border-radius: 9px; font-size: 13.5px; }
.chat-send-form button { background: var(--navy); color: #fff; border: none; padding: 10px 18px; border-radius: 9px; font-weight: 600; font-size: 13.5px; }

/* ---- Chat flotante global ---- */
.assistant-fab {
  position: fixed; right: 24px; bottom: 24px; width: 56px; height: 56px; border-radius: 50%;
  background: #fff; color: #fff; border: 3px solid var(--navy); font-size: 24px; box-shadow: 0 8px 24px rgba(0,0,0,0.28);
  display: flex; align-items: center; justify-content: center; z-index: 80;
  padding: 0; overflow: hidden;
}
.assistant-fab:hover { border-color: var(--accent); box-shadow: 0 10px 28px rgba(0,0,0,0.34); }
.assistant-fab .badge { position: absolute; top: -2px; right: -2px; }
.assistant-fab-icon { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block; }

.assistant-panel {
  position: fixed; right: 24px; bottom: 92px; width: 360px; height: 480px; max-height: 70vh;
  background: #fff; border-radius: 14px; box-shadow: 0 16px 44px rgba(0,0,0,0.3); z-index: 80;
  display: flex; flex-direction: column; overflow: hidden;
}
.assistant-panel-header {
  background: var(--navy); color: #fff; padding: 12px 14px; display: flex; align-items: flex-start; justify-content: space-between;
}
.assistant-panel-title { font-weight: 700; font-size: 14px; }
.assistant-panel-subtitle { font-size: 11px; opacity: 0.8; margin-top: 2px; }
.assistant-close { background: none; border: none; color: #fff; font-size: 14px; opacity: 0.8; }
.assistant-close:hover { opacity: 1; }
.assistant-panel-actions { display: flex; align-items: center; gap: 10px; }
.assistant-clear { background: none; border: none; color: #fff; font-size: 13px; opacity: 0.8; cursor: pointer; }
.assistant-clear:hover { opacity: 1; }
.assistant-log { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; background: var(--gray-bg); }
.assistant-log .msg { max-width: 88%; white-space: pre-wrap; }
.assistant-log .msg.assistant { background: #fff; border: 1px solid var(--border); align-self: flex-start; }
.assistant-log .msg.user { background: var(--navy); color: #fff; align-self: flex-end; }
.assistant-log .msg-link { display: inline-block; margin-top: 6px; font-size: 12px; color: var(--accent); font-weight: 600; cursor: pointer; }
.assistant-empty { margin: auto; text-align: center; color: var(--text-muted); font-size: 13px; padding: 0 20px; }

.assistant-notify-select {
  border: 1px solid var(--border); border-radius: 8px; font-size: 12.5px; font-weight: 600;
  color: var(--accent); background: var(--accent-light); padding: 0 8px; max-width: 118px;
}

.assistant-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--border); background: #fff; }
.assistant-form input { flex: 1; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }
.assistant-form button { background: var(--navy); color: #fff; border: none; padding: 9px 14px; border-radius: 8px; font-weight: 600; font-size: 13px; }
.assistant-thinking { align-self: flex-start; font-size: 12px; color: var(--text-muted); font-style: italic; }

@media (max-width: 980px) {
  .layout { grid-template-columns: 160px 280px 1fr; }
  .detail-body { grid-template-columns: 1fr; }
  .chat-col { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 16px; margin-top: 6px; }
}

/* ---- Móvil: pantallas angostas (celular) ---- */
@media (max-width: 720px) {
  .login-card { width: 100%; padding: 28px 22px; }

  /* Topbar: se envuelve en vez de desbordar; las acciones se agrupan en un
     menú vertical desplegable en vez de amontonarse como botones sueltos */
  .topbar { flex-wrap: wrap; height: auto; min-height: 56px; padding: 8px 10px; row-gap: 6px; }
  .brand span { display: none; }
  .view-nav { order: 3; width: 100%; justify-content: center; }
  .topbar-right { position: relative; gap: 8px; }
  .notif-dropdown { width: calc(100vw - 24px); max-width: 340px; right: -8px; }

  .topbar-menu-toggle {
    display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 4px;
    width: 38px; height: 34px; padding: 0; background: rgba(255,255,255,0.12); border: none; border-radius: 9px;
  }
  .topbar-menu-toggle:hover { background: rgba(255,255,255,0.22); }
  .topbar-menu-toggle span { display: block; width: 17px; height: 2px; background: #fff; border-radius: 2px; transition: transform .15s, opacity .15s; }
  .topbar-menu-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .topbar-menu-toggle.open span:nth-child(2) { opacity: 0; }
  .topbar-menu-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .topbar-menu {
    display: none; position: absolute; top: calc(100% + 10px); right: 0; z-index: 70;
    flex-direction: column; align-items: stretch; gap: 1px; width: 252px;
    background: #fff; border: 1px solid rgba(15,30,45,0.06); border-radius: 18px;
    box-shadow: 0 20px 50px rgba(10,20,35,0.28); padding: 10px;
    animation: topbar-menu-in .14s ease-out;
  }
  @keyframes topbar-menu-in {
    from { opacity: 0; transform: translateY(-6px) scale(.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  .topbar-menu.open { display: flex; }

  /* Cabecera estilo Slack: avatar circular con iniciales + nombre/rol */
  .topbar-menu-user {
    display: flex; flex-direction: row; align-items: center; gap: 12px;
    padding: 10px 10px 14px;
  }
  .topbar-menu-avatar {
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--navy), var(--accent));
    color: #fff; font-weight: 700; font-size: 15px; letter-spacing: .3px;
  }
  .topbar-menu-user-info { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; min-width: 0; }
  .topbar-menu-user #user-name { font-weight: 700; font-size: 15px; color: var(--text); line-height: 1.2; }
  .topbar-menu-user .role-pill { background: var(--accent-light); color: var(--accent); font-weight: 700; }

  .topbar-menu-sep { display: block; height: 1px; background: var(--border); margin: 4px 8px 6px; }

  .topbar-menu button {
    display: flex; align-items: center; background: none; color: var(--text); text-align: left; width: 100%;
    padding: 11px 10px; border-radius: 10px; font-size: 14.5px; font-weight: 500; transition: background .1s;
  }
  .topbar-menu button:hover { background: var(--gray-bg); }
  .topbar-menu button:active { background: var(--border); }
  .tm-icon { display: inline-flex; align-items: center; justify-content: center; width: 22px; margin-right: 11px; font-size: 15px; flex-shrink: 0; }
  .topbar-menu button.topbar-menu-logout {
    color: var(--danger); margin-top: 3px;
  }
  .topbar-menu button.topbar-menu-logout:hover { background: var(--danger-light); }

  /* Procesos: sidebar como barra horizontal + lista/detalle se alternan */
  .layout { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar {
    grid-row: 1; grid-column: 1; display: flex; flex-direction: row; overflow-x: auto; gap: 6px;
    padding: 10px; border-right: none; border-bottom: 1px solid var(--border);
  }
  .sidebar-section-title { display: none; }
  .sidebar-item { flex-shrink: 0; margin-bottom: 0; white-space: nowrap; }
  .process-list-pane, .detail-pane { grid-row: 2; grid-column: 1; }
  .detail-pane { display: none; }
  .layout.showing-detail .process-list-pane { display: none; }
  .layout.showing-detail .detail-pane { display: flex; }
  .mobile-back-btn { display: inline-flex; }
  .detail-header { display: flex; flex-direction: column; }

  /* Chat de equipo: sidebar de conversaciones y chat se alternan igual */
  .chat-layout { grid-template-columns: 1fr; grid-template-rows: 1fr; }
  .chat-sidebar { grid-row: 1; grid-column: 1; }
  .chat-main { grid-row: 1; grid-column: 1; display: none; }
  .chat-layout.showing-chat .chat-sidebar { display: none; }
  .chat-layout.showing-chat .chat-main { display: flex; }
  .chat-main-header { flex-wrap: wrap; }
  .chat-main-header .mobile-back-btn { width: 100%; }

  .student-card dl { grid-template-columns: 100px 1fr; }
  .table { display: block; overflow-x: auto; }
  .modal { width: 100%; }

  /* Burbuja del asistente: casi pantalla completa en vez de flotante fija */
  .assistant-panel { left: 10px; right: 10px; width: auto; bottom: 78px; height: 65vh; max-height: 65vh; }
  .assistant-fab { right: 16px; bottom: 16px; }
  /* En el Chat de equipo la burbuja taparía el botón "Enviar" — ya está el
     Asistente Virtual como una conversación más ahí mismo. */
  #view-chat-panel:not(.hidden) ~ .assistant-fab,
  #view-chat-panel:not(.hidden) ~ .assistant-panel { display: none; }
}