/* ─── AUTH ─── */
#authScreen{position:fixed;inset:0;background:linear-gradient(135deg,#0d0f14 0%,#1e2333 50%,#0d1a2e 100%);display:flex;align-items:center;justify-content:center;z-index:1000}
.auth-card{background:rgba(255,255,255,.04);backdrop-filter:blur(24px);border:1px solid rgba(255,255,255,.10);border-radius:20px;padding:48px 40px;width:420px;max-width:90vw;box-shadow:0 32px 64px rgba(0,0,0,.4)}
.auth-logo{text-align:center;margin-bottom:32px}
.auth-logo .logo-mark{width:56px;height:56px;background:var(--accent);border-radius:16px;display:inline-flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:12px}
.auth-logo h1{color:#fff;font-size:28px;font-weight:800;letter-spacing:-1px}
.auth-logo p{color:rgba(255,255,255,.5);font-size:13px;margin-top:4px}
.auth-tabs{display:flex;gap:4px;background:rgba(255,255,255,.06);border-radius:10px;padding:4px;margin-bottom:28px}
.auth-tab{flex:1;padding:10px;text-align:center;color:rgba(255,255,255,.5);cursor:pointer;border-radius:8px;font-size:14px;font-weight:500;transition:all .2s}
.auth-tab.active{background:var(--accent);color:#fff}
.auth-input-group{margin-bottom:16px}
.auth-input-group label{display:block;color:rgba(255,255,255,.6);font-size:13px;margin-bottom:6px}
.auth-input-group input{width:100%;padding:12px 14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;color:#fff;font-size:15px;font-family:'Heebo',sans-serif;outline:none;transition:border .2s}
.auth-input-group input:focus{border-color:var(--accent)}
.auth-input-group input::placeholder{color:rgba(255,255,255,.3)}
.btn-auth{width:100%;padding:14px;background:var(--accent);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:700;cursor:pointer;font-family:'Heebo',sans-serif;margin-top:8px;transition:all .2s}
.btn-auth:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-auth:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn-google{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:13px;border:1.5px solid #dadce0;border-radius:10px;background:#fff;font-size:15px;font-weight:600;color:#3c4043;cursor:pointer;transition:all .2s;font-family:'Heebo',sans-serif}
.btn-google:hover{background:#f8f9fa;box-shadow:0 2px 8px rgba(0,0,0,.1);border-color:#bbb}
.auth-divider{display:flex;align-items:center;gap:12px;margin:16px 0;color:var(--ink-muted);font-size:13px}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.auth-error{color:#f87171;font-size:13px;text-align:center;margin-top:8px;min-height:20px}