:root{
  --bg:#ffffff; --bg2:#fbf8ee; --bg3:#eef5ea;
  --gold:#cf9b06; --blue:#1e8a52; --blue2:#2c9e63;
  --red:#ff4757; --warm:#d9a404;
  --border:rgba(30,138,82,0.15);
  --text:#33403a; --muted:#7d8a80;
  --font-mono:'Share Tech Mono',monospace;
  --font-head:'Orbitron',monospace;
  --font-body:'Inter',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);min-height:100vh;line-height:1.6;}
body::after{content:'';position:fixed;inset:0;z-index:1;pointer-events:none;
  background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.05) 2px,rgba(0,0,0,.05) 4px);}
#matrix{position:fixed;inset:0;z-index:0;opacity:.05;pointer-events:none;}
.wrap{position:relative;z-index:2;}
a{color:var(--blue2);}

/* ── TOP NAV ── */
.topnav{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.8rem 2rem;background:var(--bg2);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;}
.topnav .brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.topnav .brand img{width:32px;height:32px;object-fit:contain;}
.topnav .brand b{font-family:var(--font-head);font-size:.8rem;font-weight:700;letter-spacing:.04em;color:var(--gold);}
.topnav .right{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;}
.nav-user{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.04em;}
.nav-badge{background:rgba(247,192,28,.12);border:1px solid rgba(247,192,28,.3);border-radius:4px;
  padding:3px 10px;font-family:var(--font-mono);font-size:.64rem;color:var(--gold);letter-spacing:.08em;text-transform:uppercase;}
.btn-logout{background:rgba(255,71,87,.1);border:1px solid rgba(255,71,87,.3);border-radius:6px;
  padding:.4rem .9rem;font-family:var(--font-mono);font-size:.7rem;color:var(--red);letter-spacing:.06em;
  cursor:pointer;text-decoration:none;transition:all .2s;}
.btn-logout:hover{background:rgba(255,71,87,.2);}

/* ── PAGE CONTAINER ── */
.container{max-width:1000px;margin:0 auto;padding:2rem;}
.section-head{font-family:var(--font-head);font-size:.78rem;font-weight:700;letter-spacing:.18em;
  color:var(--muted);text-transform:uppercase;margin-bottom:1.2rem;padding-bottom:.5rem;border-bottom:1px solid var(--border);}
.crumbs{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);margin-bottom:1rem;letter-spacing:.04em;}
.crumbs a{color:var(--blue2);text-decoration:none;}

/* ── STAT CARDS ── */
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:2rem;}
.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:1.1rem 1.3rem;position:relative;overflow:hidden;}
.stat-card::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--blue);}
.stat-card.gold::after{background:var(--gold);}
.stat-card.red::after{background:var(--red);}
.stat-value{font-family:var(--font-head);font-size:1.9rem;font-weight:700;line-height:1;color:var(--blue);}
.stat-card.gold .stat-value{color:var(--gold);}
.stat-card.red .stat-value{color:var(--red);}
.stat-label{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.1em;color:var(--muted);margin-top:.4rem;text-transform:uppercase;}

/* ── MODULE / LESSON LIST ── */
.module{background:var(--bg2);border:1px solid var(--border);border-radius:12px;margin-bottom:1.2rem;overflow:hidden;}
.module-head{display:flex;align-items:center;gap:12px;padding:1rem 1.3rem;border-bottom:1px solid var(--border);}
.module-num{width:30px;height:30px;border-radius:7px;background:var(--bg3);border:1px solid rgba(247,192,28,.25);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-head);font-weight:700;color:var(--gold);font-size:.8rem;flex-shrink:0;}
.module-title{font-family:var(--font-head);font-size:.82rem;font-weight:700;letter-spacing:.03em;color:#1f3026;}
.lessons{padding:.5rem .6rem;}
.lesson-row{display:flex;align-items:center;gap:12px;padding:.7rem .8rem;border-radius:8px;
  text-decoration:none;color:var(--text);transition:background .2s;}
.lesson-row.clickable:hover{background:var(--bg3);}
.lesson-row.locked{opacity:.5;cursor:not-allowed;}
.lesson-ico{width:34px;height:34px;border-radius:8px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  background:var(--bg3);border:1px solid var(--border);}
.lesson-ico svg{width:17px;height:17px;}
.lesson-main{flex:1;min-width:0;}
.lesson-name{font-size:.86rem;color:var(--text);}
.lesson-meta{font-family:var(--font-mono);font-size:.64rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin-top:2px;}
.lesson-badge{font-family:var(--font-mono);font-size:.6rem;padding:3px 9px;border-radius:4px;text-transform:uppercase;letter-spacing:.06em;white-space:nowrap;}
.badge-done{background:rgba(30,138,82,.12);color:var(--blue2);border:1px solid rgba(30,138,82,.3);}
.badge-current{background:rgba(247,192,28,.12);color:var(--gold);border:1px solid rgba(247,192,28,.3);}
.badge-locked{background:rgba(115,136,173,.1);color:var(--muted);border:1px solid rgba(115,136,173,.25);}

/* ── PROGRESS BAR ── */
.prog-track{height:7px;background:var(--bg3);border-radius:4px;overflow:hidden;margin:.4rem 0 1.5rem;}
.prog-fill{height:100%;background:linear-gradient(90deg,var(--gold),var(--blue));transition:width .8s ease;}

/* ── LESSON PAGE ── */
.lesson-wrap{max-width:840px;margin:0 auto;padding:2rem;}
.lesson-h1{font-family:var(--font-head);font-size:1.3rem;font-weight:700;letter-spacing:.03em;color:#1f3026;margin-bottom:.4rem;}
.lesson-sub{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:1.5rem;}

.video-box{position:relative;width:100%;aspect-ratio:16/9;background:var(--bg2);border:1px solid var(--border);
  border-radius:12px;overflow:hidden;margin-bottom:1.5rem;}
.video-box video,.video-box iframe{width:100%;height:100%;border:0;display:block;}
.video-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;
  color:var(--muted);font-family:var(--font-mono);font-size:.78rem;letter-spacing:.06em;text-align:center;padding:1.5rem;}
.video-ph svg{width:44px;height:44px;stroke:rgba(247,192,28,.5);}
.video-ph .vp-cap{color:var(--gold);}

.theory{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:1.8rem 2rem;
  max-height:60vh;overflow-y:auto;}
.theory h3{font-family:var(--font-body);font-size:1rem;font-weight:600;color:var(--gold);margin:1.4rem 0 .6rem;}
.theory h3:first-child{margin-top:0;}
.theory p{color:var(--muted);margin-bottom:.9rem;font-size:.92rem;}
.theory ul{margin:0 0 .9rem 1.2rem;color:var(--muted);font-size:.92rem;}
.theory li{margin-bottom:.4rem;}
.theory b{color:var(--text);}
.theory .muted{color:var(--muted);font-size:.82rem;font-style:italic;}

.complete-bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:1.5rem;}
.hint{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);letter-spacing:.04em;}

/* ── BUTTONS ── */
.btn{font-family:var(--font-mono);font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;
  border-radius:8px;padding:.85rem 1.8rem;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;gap:8px;border:1px solid var(--blue);}
.btn-primary{background:linear-gradient(135deg,#f2b705,#2fa15b);color:#fff;border:none;}
.btn-primary:hover{box-shadow:0 0 24px rgba(30,138,82,.25),0 0 48px rgba(247,192,28,.12);}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;box-shadow:none;}
.btn-ghost{background:transparent;border:1px solid rgba(247,192,28,.35);color:var(--gold);}
.btn-ghost:hover{background:rgba(247,192,28,.07);}

/* ── PRACTICE TASKS ── */
.task{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:1.5rem 1.7rem;margin-bottom:1.2rem;position:relative;}
.task .t-kind{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--blue2);}
.task .t-prompt{font-size:.96rem;color:#1f3026;margin:.4rem 0 1.1rem;font-weight:500;}
.opt{display:flex;align-items:center;gap:10px;padding:.6rem .8rem;border:1px solid var(--border);border-radius:8px;margin-bottom:.5rem;cursor:pointer;transition:border-color .2s,background .2s;}
.opt:hover{border-color:rgba(30,138,82,.4);}
.opt input{accent-color:var(--gold);width:16px;height:16px;flex-shrink:0;}
.opt span{font-size:.88rem;}
.task input[type=text]{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;
  padding:.7rem 1rem;color:var(--text);font-family:var(--font-mono);font-size:.9rem;outline:none;}
.task input[type=text]:focus{border-color:var(--gold);}

.order-item{display:flex;align-items:center;gap:10px;padding:.6rem .8rem;background:var(--bg);border:1px solid var(--border);
  border-radius:8px;margin-bottom:.5rem;}
.order-item .o-text{flex:1;font-size:.88rem;}
.order-item .o-ctrl{display:flex;gap:4px;}
.order-item button{background:var(--bg3);border:1px solid var(--border);color:var(--blue2);border-radius:5px;
  width:28px;height:28px;cursor:pointer;font-size:.9rem;line-height:1;}
.order-item button:hover{border-color:var(--gold);color:var(--gold);}

.match-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:.8rem;margin-bottom:.6rem;}
.match-left{font-size:.88rem;padding:.6rem .8rem;background:var(--bg);border:1px solid var(--border);border-radius:8px;}
.match-arrow{color:var(--muted);}
.match-row select{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:.6rem .7rem;font-family:var(--font-body);font-size:.86rem;outline:none;}
.match-row select:focus{border-color:var(--gold);}

.task.correct{border-color:rgba(30,138,82,.5);}
.task.wrong{border-color:rgba(255,71,87,.5);}
.task .verdict{position:absolute;top:1.2rem;right:1.4rem;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;}
.verdict.ok{color:var(--blue2);}
.verdict.no{color:var(--red);}

/* ── RESULT PANEL ── */
.result{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:1.6rem 1.8rem;margin-bottom:1.2rem;display:none;}
.result.show{display:block;}
.result.pass{border-color:rgba(30,138,82,.5);}
.result.fail{border-color:rgba(255,71,87,.5);}
.result .r-score{font-family:var(--font-head);font-size:1.6rem;font-weight:700;}
.result.pass .r-score{color:var(--blue2);}
.result.fail .r-score{color:var(--red);}
.result .r-text{font-family:var(--font-mono);font-size:.78rem;color:var(--muted);margin-top:.4rem;letter-spacing:.04em;}

/* ── TABLE (teacher) ── */
.table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:.76rem;}
.table th{color:var(--muted);text-transform:uppercase;font-size:.64rem;letter-spacing:.08em;padding:.6rem;border-bottom:1px solid var(--border);text-align:left;}
.table td{padding:.65rem .6rem;border-bottom:1px solid rgba(30,138,82,.06);}
.table tr:last-child td{border-bottom:none;}

.flash{background:rgba(255,71,87,.1);border:1px solid rgba(255,71,87,.3);color:var(--red);
  border-radius:8px;padding:.7rem 1rem;font-family:var(--font-mono);font-size:.78rem;margin-bottom:1.2rem;}