*{box-sizing:border-box;margin:0;padding:0}
:root{--navy:#0f2744;--blue:#1a4b8c;--green:#166534;--red:#991b1b;--amber:#92400e;--bg:#f0f2f5;--card:#fff;--border:#d0d7e3;--muted:#6b7280;--ink:#0d1117}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);min-height:100vh;padding:10px}
#app{max-width:560px;margin:0 auto;width:100%}
.screen{display:none}.screen.active{display:block}

/* LOGIN */
.login-wrap{min-height:96vh;display:flex;align-items:center;justify-content:center}
.login-card{background:var(--card);border-radius:18px;border:2px solid var(--border);padding:40px 24px;width:100%;text-align:center;box-shadow:0 8px 40px rgba(0,0,0,.08)}
.login-logo{font-size:56px;margin-bottom:12px}
.login-title{font-size:22px;font-weight:800;color:var(--ink);margin-bottom:4px}
.login-sub{font-size:13px;color:var(--muted);margin-bottom:28px;line-height:1.6}
.login-label{font-size:11px;font-weight:700;color:#374151;display:block;text-align:left;margin-bottom:7px;letter-spacing:1px;text-transform:uppercase}
.login-input{width:100%;padding:14px;border:2px solid var(--border);border-radius:10px;font-size:20px;letter-spacing:5px;text-align:center;outline:none;font-family:monospace;transition:border .15s}
.login-input:focus{border-color:var(--blue)}
.login-text{width:100%;padding:13px 14px;border:2px solid var(--border);border-radius:10px;font-size:15px;outline:none;transition:border .15s}
.login-text:focus{border-color:var(--blue)}
.login-switch{font-size:13px;color:var(--muted);margin-top:18px}
.login-switch a{color:var(--blue);font-weight:700;cursor:pointer;text-decoration:underline}
.login-ok{background:#f0fdf4;border:1.5px solid #86efac;border-radius:8px;padding:10px;font-size:13px;color:#166534;margin-top:10px;display:none;line-height:1.5}
.login-ok.show{display:block}
.login-btn{width:100%;padding:14px;background:var(--navy);color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:700;cursor:pointer;margin-top:14px}
.login-err{background:#fef2f2;border:1.5px solid #fca5a5;border-radius:8px;padding:10px;font-size:13px;color:#b91c1c;margin-top:10px;display:none}
.login-err.show{display:block}

/* HOME */
.home-top{background:var(--navy);border-radius:14px 14px 0 0;padding:24px 20px}
.home-top h1{font-size:20px;font-weight:800;color:#fff;margin-bottom:4px}
.home-top p{font-size:12px;color:rgba(255,255,255,.65)}
.home-body{background:var(--card);border:2px solid var(--border);border-top:none;border-radius:0 0 14px 14px;padding:18px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}
.stat-box{background:var(--bg);border-radius:9px;padding:12px 8px;text-align:center}
.stat-num{font-size:22px;font-weight:900;color:var(--navy);font-family:monospace}
.stat-lbl{font-size:10px;color:var(--muted);margin-top:2px}
.menu-item{display:flex;align-items:center;gap:12px;background:var(--bg);border-radius:10px;padding:14px;margin-bottom:8px;cursor:pointer;border:2px solid transparent;transition:all .15s}
.menu-item:hover{background:#eef2ff;border-color:#c7d2fe}
.menu-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.menu-text h3{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:2px}
.menu-text p{font-size:11px;color:var(--muted)}
.menu-badge{margin-left:auto;background:var(--navy);color:#fff;font-size:10px;font-weight:700;padding:3px 9px;border-radius:20px;white-space:nowrap;flex-shrink:0}

/* OBLAST PICKER */
.oblast-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}
.oblast-btn{padding:14px 10px;border-radius:10px;border:2px solid var(--border);background:var(--bg);cursor:pointer;text-align:center;transition:all .15s}
.oblast-btn:hover,.oblast-btn.active{background:#dbeafe;border-color:#93c5fd}
.oblast-btn h4{font-size:13px;font-weight:700;color:var(--navy);margin-bottom:2px}
.oblast-btn p{font-size:11px;color:var(--muted)}
.oblast-sve{grid-column:1/-1}

/* QUIZ */
.sec-header{background:var(--navy);border-radius:14px 14px 0 0;padding:13px 16px;display:flex;align-items:center;gap:10px}
.back-btn{background:rgba(255,255,255,.15);border:none;color:#fff;width:32px;height:32px;border-radius:8px;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sec-title{color:#fff;font-size:13px;font-weight:700;flex:1;font-family:monospace}
.sec-badge{background:rgba(255,255,255,.2);color:#fff;font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px;font-family:monospace}
.sec-body{background:var(--card);border:2px solid var(--border);border-top:none;border-radius:0 0 14px 14px;padding:18px}

.q-num{font-size:11px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.progress-bar{background:#e5e7eb;border-radius:4px;height:4px;margin-bottom:16px}
.progress-fill{background:var(--blue);border-radius:4px;height:4px;transition:width .3s}
.q-oblast{font-size:11px;background:#eff6ff;color:#1e40af;padding:3px 8px;border-radius:6px;display:inline-block;margin-bottom:10px}
.q-text{font-size:14px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:16px}
.opt{display:block;width:100%;text-align:left;background:var(--bg);border:2px solid var(--border);border-radius:9px;padding:12px 14px;font-size:13px;color:var(--ink);cursor:pointer;margin-bottom:8px;transition:all .12s;line-height:1.4}
.opt:hover:not(:disabled){background:#eef2ff;border-color:#a5b4fc}
.opt.correct{background:#f0fdf4;border-color:#22c55e;color:#166534}
.opt.wrong{background:#fef2f2;border-color:#f87171;color:#991b1b}
.opt.reveal{background:#f0fdf4;border-color:#22c55e;color:#166534}
.exp-box{background:#fffbeb;border:1.5px solid #fcd34d;border-radius:9px;padding:12px 14px;font-size:12px;color:#78350f;line-height:1.6;margin-bottom:12px;display:none}
.next-btn{width:100%;padding:13px;background:var(--navy);color:#fff;border:none;border-radius:9px;font-size:14px;font-weight:700;cursor:pointer;display:none}
.next-btn.show{display:block}

/* NAPREDAK */
.napredak-card{background:var(--bg);border-radius:10px;padding:14px;margin-bottom:10px}
.napredak-card h3{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:8px}
.napredak-bar{background:#e5e7eb;border-radius:4px;height:8px;margin-bottom:4px}
.napredak-fill{border-radius:4px;height:8px;background:var(--blue);transition:width .5s}
.napredak-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}

/* GREŠKE */
.greska-item{background:var(--bg);border-radius:9px;padding:12px;margin-bottom:8px;border-left:4px solid #f87171}
.greska-q{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:4px}
.greska-meta{font-size:11px;color:var(--muted)}

/* SCORE */
.score-wrap{text-align:center;padding:20px 0}
.score-emoji{font-size:52px;margin-bottom:10px}
.score-pct{font-size:42px;font-weight:900;font-family:monospace}
.score-pct.pass{color:var(--green)}.score-pct.fail{color:var(--red)}
.score-sub{font-size:14px;color:var(--muted);margin:8px 0 20px}
.score-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px}
.score-box{background:var(--bg);border-radius:9px;padding:12px;text-align:center}
.score-box .sn{font-size:24px;font-weight:900;font-family:monospace}
.score-box .sl{font-size:11px;color:var(--muted);margin-top:2px}
.btn-primary{width:100%;padding:13px;background:var(--navy);color:#fff;border:none;border-radius:9px;font-size:14px;font-weight:700;cursor:pointer;margin-bottom:8px}
.btn-secondary{width:100%;padding:13px;background:var(--bg);border:2px solid var(--border);border-radius:9px;font-size:14px;font-weight:700;cursor:pointer}

/* REVIEW */
.review-item{border-radius:9px;padding:12px;margin-bottom:8px;border:1.5px solid}
.review-item.ok{background:#f0fdf4;border-color:#bbf7d0}
.review-item.bad{background:#fef2f2;border-color:#fecaca}
.review-q{font-size:13px;font-weight:600;margin-bottom:6px}
.review-a{font-size:12px;margin-bottom:2px}
.review-a.c{color:#166534}.review-a.w{color:#991b1b}
.review-exp{font-size:11px;color:#78350f;background:#fffbeb;padding:6px 8px;border-radius:6px;margin-top:6px;line-height:1.5}

/* ADMIN */
.admin-table{width:100%;border-collapse:collapse;font-size:12px;margin-top:12px}
.admin-table th{background:var(--navy);color:#fff;padding:8px 6px;text-align:left}
.admin-table td{border-bottom:1px solid var(--border);padding:8px 6px;vertical-align:top}
.admin-table tr:hover td{background:#f8f9fb}
.badge-ok{background:#dcfce7;color:#166534;padding:2px 7px;border-radius:10px;font-size:10px;font-weight:700}
.badge-off{background:#fee2e2;color:#991b1b;padding:2px 7px;border-radius:10px;font-size:10px;font-weight:700}
.action-btn{padding:3px 8px;border:none;border-radius:5px;cursor:pointer;font-size:11px;font-weight:600;margin-right:3px}
.ab-reset{background:#fef3c7;color:#92400e}
.ab-del{background:#fee2e2;color:#991b1b}
.ab-toggle{background:#dbeafe;color:#1e40af}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.form-input{padding:9px;border:1.5px solid var(--border);border-radius:8px;font-size:13px;width:100%;outline:none}
.form-input:focus{border-color:var(--blue)}
.footer{text-align:center;font-size:11px;color:#9ca3af;margin-top:12px;padding-bottom:16px}

/* RESPONSIVE APP NAVIGATION */
/* Authenticated application shell — navy field guide for professional drivers */
:root{--navy:#0f2744;--blue:#1a4b8c;--green:#166534;--red:#991b1b;--amber:#92400e;--bg:#f0f2f5;--card:#fff;--border:#d0d7e3;--muted:#6b7280;--ink:#0d1117}
body{background:linear-gradient(135deg,#e8edf3 0%,#f5f7f9 48%,#e9eef4 100%)}
#app{max-width:1000px}
#app-shell{position:relative;padding-top:76px}
.app-nav{height:60px;position:absolute;z-index:20;top:0;left:0;right:0;border:1px solid #d4dde8;border-radius:13px;background:rgba(255,255,255,.94);box-shadow:0 8px 24px rgba(15,39,68,.09);display:flex;align-items:center;padding:7px 10px;gap:18px;backdrop-filter:blur(12px)}
.nav-brand{border:0;background:transparent;color:var(--navy);font-weight:800;font-size:14px;display:flex;gap:8px;align-items:center;white-space:nowrap;cursor:pointer}
.nav-mark{display:grid;place-items:center;width:33px;height:33px;border-radius:8px;color:#fff;background:var(--navy);font-size:10px;letter-spacing:.5px}
.nav-links{display:flex;gap:4px;align-items:center;margin-left:auto}
.nav-links button{border:0;border-radius:8px;background:transparent;color:#496073;font-size:12px;font-weight:700;padding:10px 12px;cursor:pointer;transition:background .16s,transform .16s,color .16s}
.nav-links button:hover,.nav-links button.active{background:#e3edf9;color:var(--navy)}
.nav-links button:active{transform:translateY(1px)}
.nav-toggle{display:none;margin-left:auto;border:0;background:#e8eff7;border-radius:8px;width:38px;height:38px;padding:9px;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:var(--navy);margin:4px 0;border-radius:2px}
body.quiz-active .app-nav{display:none}
body.quiz-active #app-shell{padding-top:0}
body.unauthenticated .app-nav{display:none}
body.unauthenticated #app-shell{padding-top:0}
@media(min-width:760px){
  #app{max-width:1040px;padding:16px}
  .home-top{padding:28px 30px}.home-body{padding:24px 30px}
  .home-top h1{font-size:24px}
  .menu-item{padding:16px}
  .sec-body{padding:26px}
}
@media(max-width:620px){
  body{padding:8px}
  #app-shell{padding-top:62px}
  .app-nav{height:51px;border-radius:11px;padding:5px 8px;gap:8px}
  .nav-brand{font-size:13px}.nav-mark{width:29px;height:29px}
  .nav-toggle{display:block;width:34px;height:34px;padding:7px}
  .nav-links{display:none;position:absolute;top:57px;left:0;right:0;padding:8px;background:rgba(255,255,255,.98);border:1px solid #d4dde8;border-radius:11px;box-shadow:0 14px 28px rgba(15,39,68,.13);margin:0}
  .app-nav.open .nav-links{display:grid;grid-template-columns:1fr 1fr;animation:navDrop .18s ease-out both}
  .nav-links button{text-align:left;padding:11px 9px;font-size:11px}
  .login-card{padding:32px 20px}.home-top{padding:19px 17px}.home-body{padding:14px}
  .sec-body{padding:15px}.menu-item{padding:12px}.oblast-grid{gap:7px}
}
@keyframes navDrop{from{opacity:0;transform:translateY(-7px)}to{opacity:1;transform:translateY(0)}}