/* ── LOGIN SCREEN (toàn màn hình, hiện trước khi vào app) ── */
#login-screen { position:fixed; inset:0; z-index:50000; background:linear-gradient(135deg,var(--navy) 0%,#1a3a5c 60%,var(--navy2) 100%); display:flex; align-items:center; justify-content:center; padding:20px; }
#login-screen.hidden { display:none; }
.login-card { background:white; border-radius:16px; box-shadow:0 24px 60px rgba(0,0,0,.3); width:100%; max-width:420px; padding:36px 34px 30px; }
.login-logo { text-align:center; margin-bottom:22px; }
.login-logo-icon { font-size:38px; margin-bottom:8px; }
.login-logo-title { font-family:'Lexend',sans-serif; font-weight:700; font-size:18px; color:var(--navy); line-height:1.3; }
.login-logo-sub { font-size:12px; color:var(--gray400); margin-top:4px; }
.login-role-tabs { display:flex; gap:6px; margin-bottom:18px; background:var(--gray50); border-radius:10px; padding:4px; }
.login-role-tab { flex:1; text-align:center; padding:8px 4px; border-radius:8px; font-size:11.5px; font-weight:600; color:var(--gray400); cursor:pointer; transition:all .15s; }
.login-role-tab.active { background:white; color:var(--navy); box-shadow:0 1px 4px rgba(0,0,0,.1); }
.login-guest-btn { width:100%; text-align:center; padding:11px; border-radius:10px; border:1.5px dashed var(--gray200); color:var(--gray400); font-size:12.5px; font-weight:600; cursor:pointer; margin-top:14px; transition:all .15s; }
.login-guest-btn:hover { border-color:var(--blue); color:var(--blue); background:var(--blue-light); }
#login-error { display:none; }
#login-error.show { display:block; }
/* API Login integration */
#api-login-modal .api-login-tabs { display:flex; border-bottom:2px solid var(--gray200); margin-bottom:16px; }
#api-login-modal .api-login-tab { padding:8px 16px; cursor:pointer; font-size:13px; font-weight:600; color:var(--gray400); border-bottom:2px solid transparent; margin-bottom:-2px; }
#api-login-modal .api-login-tab.active { color:var(--blue); border-bottom-color:var(--blue); }
.api-status-dot { width:8px; height:8px; border-radius:50%; display:inline-block; margin-right:5px; }
.api-status-dot.connected { background:var(--green); }
.api-status-dot.disconnected { background:var(--red); }
.api-status-dot.checking { background:var(--gold); animation:pulse 1s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }
.api-user-info { background:var(--blue-light); border-radius:var(--radius-sm); padding:12px 14px; display:flex; align-items:center; gap:12px; }
.api-user-avatar { width:40px; height:40px; border-radius:50%; background:var(--navy); color:white; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:16px; flex-shrink:0; }
.api-role-pill { display:inline-block; padding:2px 10px; border-radius:10px; font-size:11px; font-weight:700; background:var(--navy); color:white; margin-top:3px; }
#pw-modal .pw-input-wrap { position:relative; }
#pw-modal input[type=password], #pw-modal input[type=text] { width:100%; padding:10px 40px 10px 14px; border:2px solid var(--gray200); border-radius:var(--radius-sm); font-size:15px; font-family:'Be Vietnam Pro',sans-serif; transition:border-color .15s; }
#pw-modal input:focus { border-color:var(--blue); outline:none; }
#pw-modal input.error { border-color:var(--red); }
#pw-modal .pw-toggle { position:absolute; right:10px; top:50%; transform:translateY(-50%); background:none; border:none; cursor:pointer; font-size:16px; color:var(--gray400); }
#pw-modal .pw-error { color:var(--red); font-size:12.5px; margin-top:6px; display:none; }
#pw-modal .pw-error.show { display:block; }
/* Admin panel tab */
.admin-tabs { display:flex; border-bottom:2px solid var(--gray200); margin-bottom:18px; gap:4px; }
.admin-tab { padding:8px 18px; cursor:pointer; font-size:13px; font-weight:600; color:var(--gray400); border-bottom:2px solid transparent; margin-bottom:-2px; border-radius:var(--radius-sm) var(--radius-sm) 0 0; transition:all .15s; }
.admin-tab:hover { color:var(--navy); background:var(--gray50); }
.admin-tab.active { color:var(--blue); border-bottom-color:var(--blue); background:white; }
.admin-panel { display:none; }
.admin-panel.active { display:block; }
.temp-pw-box { background:var(--navy); color:white; border-radius:var(--radius-sm); padding:14px 18px; display:flex; align-items:center; justify-content:space-between; gap:12px; margin-top:10px; }
.temp-pw-code { font-family:monospace; font-size:22px; font-weight:700; letter-spacing:4px; color:#6ee7b7; }
.temp-pw-info { font-size:11.5px; color:rgba(255,255,255,.6); margin-top:4px; }
.role-lock-badge { font-size:10.5px; background:rgba(255,255,255,.12); padding:2px 8px; border-radius:10px; margin-left:6px; }

/* Footer riêng cho màn hình Login (nằm absolute phía dưới) */
.login-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
    padding: 14px;
    font-size: 10px;
    font-style: italic;
    color: var(--gray400);
    background: transparent;
    border-top: none;
}