/* ============================================================
   FRM Agent Kit · Shared Shell Styles
   Chrome (PIN gate, app bar, toast, modal, footer) + base reset
   ============================================================ */
:root{
  color-scheme:light;
  --brand:#1a56a0;
  --brand2:#2d7dd2;
  --bg:#f0f4f8;
  --ink:#1a202c;
  --muted:#718096;
  --ok:#38a169;
  --warn:#ed8936;
  --err:#e53e3e;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{font-family:'Segoe UI','PingFang TC','Microsoft JhengHei',Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;overflow-x:hidden;padding-bottom:env(safe-area-inset-bottom)}
button{font-family:inherit}
a{color:var(--brand2);text-decoration:none}

/* ===== PIN GATE ===== */
#pin-gate{position:fixed;inset:0;z-index:9999;background:linear-gradient(135deg,#1a56a0 0%,#667eea 100%);display:flex;align-items:center;justify-content:center;padding:24px;padding-top:max(24px,env(safe-area-inset-top))}
#pin-gate.hide{display:none}
.pin-box{background:#fff;border-radius:18px;padding:36px 28px;max-width:380px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.25);text-align:center}
.pin-logo{font-size:3.2rem;margin-bottom:6px;line-height:1}
.pin-title{font-size:1.3rem;font-weight:800;color:#1a56a0;margin-bottom:4px}
.pin-sub{font-size:.82rem;color:#718096;margin-bottom:24px;line-height:1.55}
.pin-inp{width:100%;padding:14px 16px;border:2px solid #e2e8f0;border-radius:12px;font-size:1.2rem;text-align:center;letter-spacing:.18em;font-weight:700;color:#1a202c;background:#f7f9fc;transition:all .2s}
.pin-inp:focus{outline:none;border-color:#2d7dd2;background:#fff;box-shadow:0 0 0 4px rgba(45,125,210,.12)}
.pin-inp.shake{animation:shake .5s;border-color:#fc8181;background:#fff5f5}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}
.pin-btn{margin-top:14px;width:100%;background:#1a56a0;color:#fff;border:none;padding:13px;border-radius:12px;font-size:.95rem;font-weight:700;cursor:pointer;transition:background .2s}
.pin-btn:hover{background:#143f7a}
.pin-btn:active{transform:scale(.98)}
.pin-err{color:#c53030;font-size:.78rem;margin-top:10px;min-height:1.2em;font-weight:600}
.pin-tip{font-size:.7rem;color:#a0aec0;margin-top:16px;line-height:1.5}

/* ===== APP SHELL ===== */
#app{display:none;min-height:100vh;flex-direction:column}
#app.show{display:flex}
.app-bar{background:linear-gradient(135deg,#1a56a0,#2d7dd2);color:#fff;padding:12px 18px;padding-top:max(12px,env(safe-area-inset-top));display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.12)}
.app-bar h1{font-size:1.05rem;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.app-bar .sub{font-size:.7rem;opacity:.78;margin-top:1px}
.app-bar .spacer{flex:1}
.app-bar .icon-btn{background:rgba(255,255,255,.16);border:none;color:#fff;padding:7px 11px;border-radius:8px;cursor:pointer;font-size:.74rem;font-weight:700;transition:background .2s;display:inline-flex;align-items:center;gap:4px;text-decoration:none}
.app-bar .icon-btn:hover{background:rgba(255,255,255,.28)}
.app-bar .home-link{color:#fff;font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:8px;text-decoration:none}

/* ===== CONTENT ===== */
.app-content{flex:1;padding:14px;max-width:1140px;margin:0 auto;width:100%}

/* ===== TOAST ===== */
#toast{position:fixed;bottom:max(20px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%) translateY(120px);background:#1a202c;color:#fff;padding:11px 22px;border-radius:24px;font-size:.85rem;font-weight:700;box-shadow:0 6px 24px rgba(0,0,0,.3);z-index:200;transition:transform .3s;pointer-events:none}
#toast.show{transform:translateX(-50%) translateY(0)}

/* ===== MODAL ===== */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:300;display:none;align-items:center;justify-content:center;padding:14px}
.modal-bg.show{display:flex}
.modal{background:#fff;border-radius:14px;max-width:520px;width:100%;max-height:85vh;overflow:hidden;display:flex;flex-direction:column}
.modal-hdr{background:#1a56a0;color:#fff;padding:14px 18px;display:flex;align-items:center;justify-content:space-between}
.modal-hdr h3{font-size:1rem;font-weight:800}
.modal-close{background:rgba(255,255,255,.18);border:none;color:#fff;width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:1.1rem;line-height:1}
.modal-body{padding:14px 16px;overflow-y:auto;flex:1}

/* ===== FOOTER ===== */
.app-footer{padding:18px 14px max(18px,env(safe-area-inset-bottom));text-align:center;font-size:.72rem;color:#a0aec0}
.app-footer a{cursor:pointer;color:#718096;font-weight:700;margin-left:8px}
.app-footer a:hover{color:#1a56a0}

/* ===== BASE COMPONENTS ===== */
.card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 2px 8px rgba(0,0,0,.07)}
.note-sm{background:#fffbeb;border:1px solid #f6ad55;border-radius:7px;padding:8px 12px;font-size:.75rem;color:#744210;line-height:1.55;margin-top:8px}
.note-err{background:#fff5f5;border:1px solid #fc8181;border-radius:7px;padding:8px 12px;font-size:.75rem;color:#742a2a;line-height:1.55;margin-top:8px}
.sec-title{font-size:.85rem;font-weight:700;color:#1a202c;margin:18px 0 10px;display:flex;align-items:center;gap:6px}
.sec-title::before{content:"";display:block;width:3px;height:16px;background:#2d7dd2;border-radius:2px}

/* ===== FORM ===== */
.form-group{margin-bottom:13px}
label{display:block;font-size:.77rem;font-weight:700;color:#4a5568;margin-bottom:5px}
.inp{width:100%;padding:10px 12px;border:2px solid #e2e8f0;border-radius:8px;font-size:.92rem;color:#2d3748;background:#fff;-webkit-appearance:none;appearance:none;font-family:inherit}
.inp:focus{outline:none;border-color:#2d7dd2}
select.inp{cursor:pointer;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%234a5568' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 12px center;padding-right:30px}
textarea.inp{font-family:inherit;line-height:1.6}

/* ===== BUTTONS ===== */
.btn-main{width:100%;color:#fff;border:none;padding:13px;border-radius:10px;font-size:.92rem;font-weight:700;cursor:pointer;transition:all .15s;background:#38a169}
.btn-main:hover{background:#276749}
.btn-main:active{transform:scale(.98)}
.btn-main.copied{background:#276749}
.btn-main:disabled{background:#a0aec0;cursor:not-allowed}
.copy-btn{background:#2d7dd2;color:#fff;border:none;padding:9px 16px;border-radius:8px;cursor:pointer;font-size:.8rem;font-weight:700;transition:all .15s;margin-top:8px;-webkit-appearance:none}
.copy-btn:hover{background:#1a56a0}
.copy-btn:active{transform:scale(.97)}
.copy-btn.copied{background:#38a169}

/* Mobile fine-tune */
@media(max-width:560px){
  .app-bar h1{font-size:.95rem}
  .app-bar .sub{display:none}
  .app-content{padding:11px}
  .card{padding:14px}
}