:root{
  --bg:#0b1220;
  --bg-elev:#121b2e;
  --bg-elev-2:#1a2740;
  --border:#243352;
  --text:#eaf0ff;
  --text-dim:#93a2c4;
  --accent:#2dd36f;
  --accent-dim:#1c8a49;
  --danger:#ef4444;
  --warn:#f59e0b;
  color-scheme: dark;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
[hidden]{ display:none !important; }
html,body{height:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  overscroll-behavior:none;
  user-select:none;
}
input,button{font-family:inherit;}

.screen{
  position:fixed; inset:0;
  display:flex; flex-direction:column;
  background:var(--bg);
  padding-top:env(safe-area-inset-top);
  padding-bottom:env(safe-area-inset-bottom);
}

/* ---------- Auth ---------- */
.auth-wrap{ max-width:420px; margin:auto; padding:32px 24px; width:100%; }
.brand{ text-align:center; margin-bottom:28px; }
.brand-badge{ font-size:48px; }
.brand-name{ font-size:28px; font-weight:800; letter-spacing:0.5px; margin-top:4px; }
.brand-sub{ color:var(--text-dim); font-size:14px; margin-top:6px; }
.tabs{ display:flex; background:var(--bg-elev); border-radius:12px; padding:4px; margin-bottom:20px; }
.tab{ flex:1; padding:10px; border:none; background:transparent; color:var(--text-dim); border-radius:9px; font-weight:600; font-size:14px; }
.tab.active{ background:var(--bg-elev-2); color:var(--text); }
.auth-form{ display:flex; flex-direction:column; gap:12px; }
.error-text{ color:var(--danger); font-size:13px; margin-top:12px; text-align:center; }

input{
  background:var(--bg-elev); border:1px solid var(--border); color:var(--text);
  padding:14px; border-radius:10px; font-size:16px; outline:none; user-select:text;
}
input:focus{ border-color:var(--accent); }

.btn{
  border:none; border-radius:10px; padding:13px 16px; font-size:15px; font-weight:700;
  cursor:pointer;
}
.btn-primary{ background:var(--accent); color:#052a13; }
.btn-primary:active{ background:var(--accent-dim); }
.btn-ghost{ background:var(--bg-elev-2); color:var(--text); }
.btn-outline{ background:transparent; color:var(--accent); border:1.5px solid var(--accent); }
.btn-block{ width:100%; margin-top:18px; }
.btn-sm{ padding:9px 12px; font-size:13px; }

/* ---------- Top bar / layout ---------- */
.topbar{
  display:flex; align-items:center; gap:8px; padding:14px 12px;
  border-bottom:1px solid var(--border); background:var(--bg-elev);
}
.topbar-title{ flex:1; font-weight:700; font-size:16px; text-align:center; }
.icon-btn{
  width:36px; height:36px; border-radius:10px; border:none; background:var(--bg-elev-2);
  color:var(--text); font-size:16px; display:flex; align-items:center; justify-content:center;
}
.icon-btn.danger{ color:var(--danger); }
.content{ flex:1; overflow-y:auto; padding:16px; }

.section-row{ display:flex; align-items:center; justify-content:space-between; margin:18px 0 10px; }
.section-row h2{ font-size:14px; text-transform:uppercase; letter-spacing:0.5px; color:var(--text-dim); margin:0; }
.row-actions{ display:flex; gap:8px; }

.list{ display:flex; flex-direction:column; gap:8px; }
.list-item{
  display:flex; align-items:center; gap:12px; background:var(--bg-elev); border:1px solid var(--border);
  border-radius:12px; padding:12px 14px;
}
.list-item .meta{ flex:1; min-width:0; }
.list-item .title{ font-weight:700; font-size:15px; }
.list-item .sub{ color:var(--text-dim); font-size:12px; margin-top:2px; }
.list-empty{ color:var(--text-dim); font-size:13px; padding:14px 4px; }

.avatar{
  width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:14px; color:#06121f; flex-shrink:0;
}
.badge{ font-size:10px; padding:2px 7px; border-radius:20px; background:var(--bg-elev-2); color:var(--text-dim); font-weight:700;}
.badge.owner{ color:var(--warn); }
.badge.admin{ color:var(--accent); }
.badge.muted{ color:var(--danger); }

.ride-banner{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  background:linear-gradient(135deg, #14351f, #0f2a19); border:1px solid var(--accent-dim);
  border-radius:12px; padding:12px 14px; margin-bottom:6px;
}
.ride-banner-title{ font-weight:700; }
.ride-banner-sub{ color:var(--text-dim); font-size:12px; margin-top:2px; }

/* ---------- Channel / PTT ---------- */
.channel-content{ display:flex; flex-direction:column; }
.member-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(84px,1fr)); gap:14px; padding:8px 4px; }
.member-tile{ display:flex; flex-direction:column; align-items:center; gap:6px; }
.member-tile .avatar{ width:56px; height:56px; font-size:18px; border:3px solid transparent; }
.member-tile.speaking .avatar{ border-color:var(--accent); box-shadow:0 0 0 4px rgba(45,211,111,0.15); }
.member-tile .name{ font-size:11px; color:var(--text-dim); max-width:80px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.mic-permission-hint{ text-align:center; color:var(--warn); font-size:13px; padding:10px; }

.ptt-bar{
  display:flex; align-items:center; justify-content:center; gap:18px;
  padding:22px 20px calc(28px + env(safe-area-inset-bottom));
  border-top:1px solid var(--border); background:var(--bg-elev);
}
.mode-pill{
  width:44px; height:44px; border-radius:50%; border:1px solid var(--border); background:var(--bg-elev-2);
  color:var(--text-dim); font-size:12px; font-weight:700;
}
.ptt-button{
  width:120px; height:120px; border-radius:50%; border:none;
  background:radial-gradient(circle at 35% 30%, #274a34, #0f2a19);
  color:var(--text); display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px;
  box-shadow:0 0 0 6px rgba(255,255,255,0.03);
  transition:transform 0.08s ease;
}
.ptt-button .ptt-icon{ font-size:34px; }
.ptt-button .ptt-label{ font-size:10px; letter-spacing:1px; color:var(--text-dim); font-weight:700; }
.ptt-button.active{
  background:radial-gradient(circle at 35% 30%, var(--accent), var(--accent-dim));
  transform:scale(1.05);
  box-shadow:0 0 0 10px rgba(45,211,111,0.18);
}
.ptt-button.active .ptt-label{ color:#052a13; }
.ptt-button.disabled{ opacity:0.5; }

.status-dot{ width:10px; height:10px; border-radius:50%; margin-left:4px; }
.status-connecting{ background:var(--warn); }
.status-connected{ background:var(--accent); }
.status-error{ background:var(--danger); }

/* ---------- Ride / map ---------- */
.ride-map{ flex:1; }
.ride-riders{
  display:flex; gap:10px; overflow-x:auto; padding:10px 12px; background:var(--bg-elev);
  border-top:1px solid var(--border);
}
.rider-chip{
  display:flex; align-items:center; gap:8px; background:var(--bg-elev-2); border-radius:20px;
  padding:6px 12px 6px 6px; flex-shrink:0;
}
.rider-chip .avatar{ width:26px; height:26px; font-size:11px; }
.rider-chip .dist{ font-size:11px; color:var(--text-dim); }
.rider-marker{
  width:30px; height:30px; border-radius:50% 50% 50% 0; transform:rotate(-45deg);
  display:flex; align-items:center; justify-content:center; border:2px solid #fff;
}
.rider-marker span{ transform:rotate(45deg); font-size:13px; font-weight:800; color:#06121f; }

.sos-button{
  position:absolute; right:16px; bottom:calc(96px + env(safe-area-inset-bottom));
  background:var(--danger); color:#fff; border:none; border-radius:26px; padding:14px 18px;
  font-weight:800; font-size:13px; box-shadow:0 6px 18px rgba(239,68,68,0.4); z-index:1000;
}

/* ---------- Modals ---------- */
.modal-backdrop{
  position:fixed; inset:0; background:rgba(4,8,16,0.7); display:flex; align-items:flex-end;
  justify-content:center; z-index:2000;
}
.modal{
  background:var(--bg-elev); border-radius:18px 18px 0 0; padding:22px; width:100%; max-width:480px;
  padding-bottom:calc(22px + env(safe-area-inset-bottom));
  display:flex; flex-direction:column; gap:12px;
}
.modal h3{ margin:0 0 4px; }
.modal-actions{ display:flex; gap:10px; justify-content:flex-end; margin-top:6px; }
.invite-code{ font-size:28px; font-weight:800; letter-spacing:4px; text-align:center; color:var(--accent); }
.invite-link{ font-size:12px; color:var(--text-dim); text-align:center; word-break:break-all; }
#invite-qr{ margin:6px auto; background:#fff; border-radius:12px; padding:10px; }

.toast{
  position:fixed; left:50%; top:calc(14px + env(safe-area-inset-top)); transform:translateX(-50%);
  background:#1a2740; border:1px solid var(--border); color:var(--text); padding:10px 16px; border-radius:10px;
  font-size:13px; z-index:3000; max-width:90vw; text-align:center;
}
.toast.err{ border-color:var(--danger); color:#ffb4b4; }

::-webkit-scrollbar{ display:none; }