/* KeepChatSafe student chat — brand tokens MEASURED from the marketing site. */
:root{
  --navy:#142f4b; --navy-deep:#0d2238; --slate:#3d5875; --slate-soft:#6b7f94;
  --teal:#0d9488; --teal-dark:#0a7a70; --teal-soft:#e4f4f2; --teal-bright:#5eead4;
  --sand:#f4efe6; --paper:#fbfaf7; --card:#ffffff; --line:#e5e3dc; --line-soft:#eeece5;
  --amber:#a16207; --amber-soft:#fbf3e0; --amber-line:#eeddb4;
  --red:#b91c1c; --red-soft:#fdeaea; --red-line:#f2c9c9;
  --radius:16px; --radius-sm:10px;
  --shadow:0 10px 40px rgba(20,47,75,.09); --shadow-sm:0 2px 12px rgba(20,47,75,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--navy);background:var(--paper);line-height:1.6;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.app{max-width:820px;margin:0 auto;min-height:100%;display:flex;flex-direction:column}

/* Header */
.app-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;background:var(--navy-deep);color:#fff;position:sticky;top:0;z-index:5;
}
.brand{display:flex;align-items:center;gap:10px;font-family:'Fraunces',Georgia,serif;font-weight:600;font-size:1.15rem}
.brand-mark{color:var(--teal-bright);font-size:1rem}
.safe-pill{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;color:var(--teal-bright);background:rgba(94,234,212,.12);border:1px solid rgba(94,234,212,.3);padding:5px 12px;border-radius:100px}
.safe-dot{width:8px;height:8px;border-radius:50%;background:var(--teal-bright);box-shadow:0 0 0 0 rgba(94,234,212,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(94,234,212,.5)}70%{box-shadow:0 0 0 6px rgba(94,234,212,0)}100%{box-shadow:0 0 0 0 rgba(94,234,212,0)}}

.mode-banner{background:var(--amber-soft);border-bottom:1px solid var(--amber-line);color:#6d4a0d;font-size:.83rem;padding:9px 20px;text-align:center}
.mode-banner code{background:#fff;border:1px solid var(--amber-line);border-radius:5px;padding:1px 6px;font-size:.8em}

/* Chat area */
.chat{flex:1;display:flex;flex-direction:column;min-height:0}
.thread{flex:1;overflow-y:auto;padding:26px 20px 8px;display:flex;flex-direction:column;gap:16px}

.row{display:flex;gap:11px;align-items:flex-end;max-width:100%}
.row-user{flex-direction:row;justify-content:flex-end}
.avatar{width:32px;height:32px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;color:#fff}
.avatar-bot{background:var(--teal)}
.avatar-user{background:var(--slate)}

.bubble{padding:12px 16px;border-radius:16px;max-width:78%;font-size:.96rem;white-space:pre-wrap;word-wrap:break-word}
.bubble-assistant{background:var(--card);border:1px solid var(--line);border-bottom-left-radius:5px;box-shadow:var(--shadow-sm)}
.bubble-user{background:var(--navy);color:#fff;border-bottom-right-radius:5px}
.bubble-system{background:var(--sand);border:1px solid var(--line);color:var(--slate);font-size:.92rem}

/* Tones */
.tone-crisis{background:var(--teal-soft);border-color:#bfe6e0}
.tone-blocked{background:var(--amber-soft);border:1px solid var(--amber-line);color:#6d4a0d}
.tone-unavailable{background:var(--amber-soft);border:1px solid var(--amber-line);color:#6d4a0d}
.tone-error{background:var(--red-soft);border:1px solid var(--red-line);color:#7f1d1d}

/* Crisis support card */
.crisis-card{align-self:stretch;background:var(--teal-soft);border:1px solid #bfe6e0;border-left:4px solid var(--teal);border-radius:var(--radius-sm);padding:18px 20px;box-shadow:var(--shadow-sm)}
.crisis-title{font-family:'Fraunces',Georgia,serif;font-weight:600;font-size:1.08rem;color:var(--navy);margin-bottom:6px}
.crisis-lead{font-size:.9rem;color:var(--slate);margin-bottom:14px;line-height:1.5}
.crisis-list{list-style:none;display:flex;flex-direction:column;gap:9px}
.crisis-list li{display:flex;flex-direction:column;background:#fff;border:1px solid #cde8e4;border-radius:9px;padding:10px 13px}
.crisis-res-label{font-weight:700;font-size:.9rem;color:var(--navy)}
.crisis-res-detail{font-size:.83rem;color:var(--slate)}

.escalation-note{align-self:flex-start;max-width:78%;font-size:.8rem;color:var(--amber);background:var(--amber-soft);border:1px solid var(--amber-line);border-radius:9px;padding:8px 12px;display:flex;gap:7px;align-items:center}
.escalation-note::before{content:"\2665";color:var(--amber)}

.retry-wrap{align-self:flex-start}
.btn-retry{background:#fff;border:1.5px solid var(--line);color:var(--navy);font-weight:600;font-size:.85rem;padding:8px 18px;border-radius:9px;cursor:pointer;font-family:inherit}
.btn-retry:hover{border-color:var(--teal);color:var(--teal-dark)}

/* Typing indicator */
.typing{display:inline-flex;gap:4px;align-items:center;padding:15px 16px}
.typing .dot{width:7px;height:7px;border-radius:50%;background:var(--slate-soft);opacity:.5;animation:blink 1.3s infinite}
.typing .dot:nth-child(2){animation-delay:.2s}
.typing .dot:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:.9;transform:translateY(-2px)}}

/* Composer */
.composer{display:flex;gap:10px;align-items:flex-end;padding:14px 20px;border-top:1px solid var(--line);background:var(--paper);position:sticky;bottom:0}
.input{flex:1;resize:none;font-family:inherit;font-size:.96rem;line-height:1.5;color:var(--navy);background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:12px 15px;max-height:160px;overflow-y:auto}
.input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(13,148,136,.12)}
.btn-send{background:var(--teal);color:#fff;border:none;font-weight:600;font-size:.95rem;padding:12px 22px;border-radius:12px;cursor:pointer;font-family:inherit;box-shadow:0 3px 14px rgba(13,148,136,.28);flex-shrink:0}
.btn-send:hover:not(:disabled){background:var(--teal-dark)}
.btn-send:disabled{opacity:.55;cursor:default}
.foot-note{font-size:.74rem;color:var(--slate-soft);text-align:center;padding:0 20px 16px}

@media (max-width:600px){
  .bubble{max-width:85%}
  .app-header{padding:12px 15px}
  .thread{padding:18px 14px 6px}
  .composer{padding:12px 14px}
}