/* =====================================================================
   Nihongo LMS — Design System  ·  "Quiet Premium"
   Inter + Noto Sans JP · Light/Dark · Glass · Soft depth
   ===================================================================== */

/* ---------- Tokens ---------- */
:root{
  /* brand — vermilion (朱) + gold, washi/ink heritage palette */
  --brand-1:#C0392B;   /* vermilion red   */
  --brand-2:#E74C3C;   /* light red       */
  --brand-3:#922B21;   /* deep red        */
  --gold:#D4A843; --gold-l:#F0C060;
  --grad:linear-gradient(135deg,var(--brand-3),var(--brand-1) 55%,var(--brand-2));
  --grad-soft:linear-gradient(135deg,rgba(192,57,43,.12),rgba(212,168,67,.10));

  /* per-level accents (from reference) */
  --n5:#3aa99f; --n5-l:#4ecdc4;   /* teal  */
  --n4:#b8902a; --n4-l:#D4A843;   /* gold  */
  --n3:#d15a3c; --n3-l:#e17055;   /* coral */

  /* radii */
  --r-xs:8px; --r-sm:12px; --r:16px; --r-lg:22px; --r-xl:28px; --pill:999px;

  /* motion */
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:.16s var(--ease); --t:.26s var(--ease); --t-slow:.5s var(--ease);

  /* type */
  --font:"Inter","Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-jp:"Noto Serif JP","Noto Sans JP",serif;
  --font-display:"Noto Serif JP","Inter",serif;
  --font-brand:"Kaisei Decol","Noto Serif JP",serif;
}

/* Light (default) — washi parchment */
:root,[data-theme="light"]{
  --bg:#FAF7F0;
  --bg-grad-1:rgba(192,57,43,.07);
  --bg-grad-2:rgba(212,168,67,.08);
  --surface:#ffffff;
  --surface-2:#F0EBE0;
  --surface-glass:rgba(250,247,240,.78);
  --elev:#ffffff;
  --text:#1A1A2E;
  --text-soft:#2C2C4A;
  --muted:#7F8C8D;
  --border:rgba(26,26,46,.10);
  --border-strong:rgba(26,26,46,.18);
  --ring:rgba(192,57,43,.30);
  --green:#27AE60; --green-bg:rgba(39,174,96,.12);
  --red:#C0392B;   --red-bg:rgba(192,57,43,.10);
  --amber:#D4A843;
  --shadow-sm:0 1px 2px rgba(26,26,46,.05),0 1px 3px rgba(26,26,46,.05);
  --shadow:0 4px 20px rgba(26,26,46,.12),0 2px 8px -2px rgba(26,26,46,.07);
  --shadow-lg:0 24px 50px -16px rgba(26,26,46,.26),0 8px 22px -10px rgba(26,26,46,.14);
  --on-brand:#ffffff;
}

/* Dark — ink (墨) */
[data-theme="dark"]{
  --bg:#13131f;
  --bg-grad-1:rgba(231,76,60,.16);
  --bg-grad-2:rgba(212,168,67,.10);
  --surface:rgba(34,34,52,.72);
  --surface-2:rgba(44,44,74,.66);
  --surface-glass:rgba(26,26,46,.66);
  --elev:#1f1f30;
  --text:#FAF7F0;
  --text-soft:#E6E2D8;
  --muted:#9a9ab0;
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.17);
  --ring:rgba(231,76,60,.42);
  --green:#2ECC71; --green-bg:rgba(46,204,113,.14);
  --red:#E74C3C;   --red-bg:rgba(231,76,60,.16);
  --amber:#F0C060;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 16px 40px -12px rgba(0,0,0,.6),0 4px 12px -4px rgba(0,0,0,.5);
  --shadow-lg:0 40px 80px -20px rgba(0,0,0,.72),0 12px 32px -12px rgba(0,0,0,.55);
  --on-brand:#ffffff;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  min-height:100vh;letter-spacing:-.011em;
  background-image:
    radial-gradient(60rem 40rem at 85% -10%,var(--bg-grad-1),transparent 60%),
    radial-gradient(50rem 35rem at -10% 8%,var(--bg-grad-2),transparent 55%);
  background-attachment:fixed;
  transition:background-color var(--t),color var(--t);
}
:lang(ja),.jp{font-family:var(--font-jp)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.ic{flex:none;vertical-align:middle}
::selection{background:var(--brand-2);color:#fff}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--ring);border-radius:var(--r-xs)}

.container{max-width:1160px;margin:0 auto;padding:0 24px}
@media(max-width:560px){.container{padding:0 16px}}

/* ---------- Navbar (glass) ---------- */
.nav{position:sticky;top:0;z-index:60;border-bottom:1px solid var(--border);
  background:var(--surface-glass);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%)}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.05rem;letter-spacing:-.02em;flex:none}
.brand .logo{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;
  background:var(--grad);box-shadow:0 6px 16px -4px rgba(192,57,43,.5);font-family:var(--font-brand);font-weight:700;font-size:1.05rem}
.brand .logo span{transform:translateY(-1px)}
.brand-name{font-size:1rem;line-height:1.1;font-weight:700;white-space:nowrap;letter-spacing:.01em}
@media(max-width:560px){.brand-name{font-size:.9rem}}
@media(max-width:400px){.brand-name{display:none}}
.brand b{font-weight:700}.brand .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links .navlink{display:inline-flex;align-items:center;gap:7px;padding:9px 13px;border-radius:var(--r-xs);
  color:var(--muted);font-weight:550;font-size:.9rem;line-height:1.2;letter-spacing:-.01em;
  background:none;border:none;font-family:inherit;cursor:pointer;
  transition:color var(--t-fast),background var(--t-fast)}
.nav-links .navlink:hover{color:var(--text);background:var(--surface-2)}
.nav-links .navlink.active{color:var(--text);background:var(--surface-2)}
.nav-user{display:flex;align-items:center;gap:10px;padding-left:8px;margin-left:4px;border-left:1px solid var(--border)}
.nav-user .who{display:flex;align-items:center;gap:8px;color:var(--text-soft);font-size:.88rem;font-weight:550}
.avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--grad);color:#fff;font-size:.8rem;font-weight:700}
.icon-only{display:grid;place-items:center;width:38px;height:38px;border-radius:var(--r-xs);border:1px solid var(--border);
  background:var(--surface-2);color:var(--text-soft);cursor:pointer;transition:var(--t-fast)}
.icon-only:hover{color:var(--text);border-color:var(--border-strong)}
.theme-toggle .moon{display:none}
[data-theme="dark"] .theme-toggle .sun{display:none}
[data-theme="dark"] .theme-toggle .moon{display:block}
.nav-burger{display:none}
/* dropdown Kelas */
.navdrop{position:relative}
.navdrop-toggle{cursor:pointer}
.navdrop .caret{transition:transform var(--t-fast);opacity:.7}
.navdrop.open .caret{transform:rotate(180deg)}
.navdrop-menu{position:absolute;top:calc(100% + 10px);left:0;min-width:248px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);box-shadow:var(--shadow-lg);padding:7px;display:none;flex-direction:column;gap:2px;z-index:70;animation:rise .18s var(--ease) both}
.navdrop.open .navdrop-menu{display:flex}
.navdrop-menu a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:var(--r-xs);color:var(--text-soft);font-size:.9rem;font-weight:550}
.navdrop-menu a:hover{background:var(--surface-2);color:var(--text)}
.dd-badge{display:inline-grid;place-items:center;min-width:36px;height:25px;border-radius:7px;font-weight:800;font-size:.78rem}
.dd-badge.n5{background:rgba(78,205,196,.16);color:var(--n5)}
.dd-badge.n4{background:rgba(212,168,67,.18);color:var(--n4)}
.dd-badge.n3{background:rgba(225,112,85,.16);color:var(--n3)}
.dd-sep{height:1px;background:var(--border);margin:5px 6px}
@media(max-width:1080px){
  .nav-links{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:2px;padding:14px 16px 18px;
    background:var(--surface-glass);backdrop-filter:blur(18px);border-bottom:1px solid var(--border);
    transform:translateY(-130%);transition:transform var(--t);box-shadow:var(--shadow)}
  .nav-links.open{transform:translateY(0)}
  .nav-user{border-left:none;padding-left:0;margin-left:0;border-top:1px solid var(--border);padding-top:12px;margin-top:8px}
  .nav-burger{display:grid}
  /* dropdown jadi inline saat menu mobile */
  .navdrop-menu{position:static;display:none;box-shadow:none;border:none;background:transparent;padding:2px 0 4px 14px;min-width:0;animation:none}
  .navdrop.open .navdrop-menu{display:flex}
}

/* ---------- Typography ---------- */
h1,h2,h3{letter-spacing:-.02em;line-height:1.2;margin:0;font-family:var(--font-display);font-weight:600}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:.78rem;font-weight:650;letter-spacing:.02em;
  color:var(--brand-2);padding:6px 13px;border-radius:var(--pill);background:var(--grad-soft);border:1px solid var(--border)}
.text-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--muted)}

/* ---------- Breadcrumb ---------- */
.crumbs{display:flex;gap:6px;align-items:center;color:var(--muted);font-size:.85rem;margin:26px 0 4px;flex-wrap:wrap}
.crumbs a{transition:color var(--t-fast)}
.crumbs a:hover{color:var(--brand-2)}
.crumbs .ic{opacity:.55}
.crumbs b{color:var(--text-soft);font-weight:600}

/* ---------- Hero ---------- */
.hero{padding:64px 0 20px;text-align:center;animation:rise .6s var(--ease) both}
.hero h1{font-size:clamp(2rem,5vw,3.3rem);font-weight:760;margin:18px 0 14px}
.hero p{color:var(--muted);max-width:600px;margin:0 auto;font-size:1.08rem}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:46px 0 20px;flex-wrap:wrap}
.section-head h2{font-size:1.5rem;font-weight:700}
.section-head p{color:var(--muted);margin:4px 0 0;font-size:.95rem}

/* ---------- Stat strip ---------- */
.stat-row{display:flex;gap:14px;justify-content:center;margin:30px 0 4px;flex-wrap:wrap}
.stat{display:flex;align-items:center;gap:13px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);padding:16px 22px;box-shadow:var(--shadow-sm);min-width:170px}
.stat .si{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--grad-soft);color:var(--brand-2)}
.stat b{display:block;font-size:1.45rem;font-weight:720;line-height:1.1}
.stat span{color:var(--muted);font-size:.82rem}

/* ---------- Grid + cards ---------- */
.grid{display:grid;gap:20px}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.cols-3{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.cols-3,.cols-2{grid-template-columns:1fr}}

.card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-sm);transition:transform var(--t),box-shadow var(--t),border-color var(--t);overflow:hidden}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;opacity:0;transition:opacity var(--t);
  background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.card:hover::before{opacity:1}
.card .c-icon{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;background:var(--grad-soft);color:var(--brand-2);margin-bottom:16px}
.card h3{font-size:1.25rem;font-weight:680;margin:2px 0}
.card p{color:var(--muted);margin:8px 0 0;font-size:.94rem}
.card .c-meta{margin-top:18px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:.85rem}
.card .c-go{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-weight:600;transition:gap var(--t-fast)}
.card:hover .c-go{gap:11px}

.level-card .lv{font-size:2.7rem;font-weight:900;line-height:1;margin-bottom:6px;letter-spacing:-.04em;font-family:var(--font-display)}
.card.locked{opacity:.72;background:var(--surface-2);cursor:not-allowed}
.card.locked:hover{transform:none;box-shadow:var(--shadow-sm);border-color:var(--border)}
.card.locked::before{display:none}
.lock-badge{display:inline-flex;align-items:center;gap:5px;font-size:.74rem;font-weight:650;padding:4px 11px;border-radius:var(--pill);background:var(--surface);border:1px solid var(--border);color:var(--muted)}
/* per-level accent: colored top edge + number */
.card.lv-n5{border-top:4px solid var(--n5-l)} .card.lv-n5 .lv{color:var(--n5)}
.card.lv-n4{border-top:4px solid var(--n4-l)} .card.lv-n4 .lv{color:var(--n4)}
.card.lv-n3{border-top:4px solid var(--n3-l)} .card.lv-n3 .lv{color:var(--n3)}
[data-theme="dark"] .card.lv-n5 .lv{color:var(--n5-l)}
[data-theme="dark"] .card.lv-n4 .lv{color:var(--n4-l)}
[data-theme="dark"] .card.lv-n3 .lv{color:var(--n3-l)}
.pill.n5{background:rgba(78,205,196,.14);color:var(--n5)} .pill.n4{background:rgba(212,168,67,.16);color:var(--n4)} .pill.n3{background:rgba(225,112,85,.14);color:var(--n3)}

/* ---------- Choice tiles ---------- */
.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:680px){.choice-grid{grid-template-columns:1fr}}
.choice{position:relative;text-align:center;padding:38px 28px;border-radius:var(--r-lg);border:1px solid var(--border);
  background:var(--surface);box-shadow:var(--shadow-sm);transition:transform var(--t),box-shadow var(--t)}
.choice:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.choice .c-icon{margin:0 auto 16px;width:60px;height:60px;border-radius:18px}
.choice h3{font-size:1.3rem}
.choice p{color:var(--muted);margin:8px 0 22px;font-size:.93rem}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;border:1px solid transparent;
  border-radius:var(--r-sm);padding:12px 20px;font-weight:600;font-size:.94rem;letter-spacing:-.01em;
  background:var(--grad);color:var(--on-brand);box-shadow:0 8px 20px -8px rgba(192,57,43,.5);
  transition:transform var(--t-fast),box-shadow var(--t-fast),filter var(--t-fast)}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px -10px rgba(192,57,43,.6);filter:saturate(1.08)}
.btn:active{transform:translateY(0)}
.btn.secondary{background:var(--surface);color:var(--text);border-color:var(--border-strong);box-shadow:var(--shadow-sm)}
.btn.secondary:hover{background:var(--surface-2);box-shadow:var(--shadow)}
.btn.ghost{background:transparent;color:var(--text-soft);border-color:var(--border-strong);box-shadow:none}
.btn.ghost:hover{background:var(--surface-2);box-shadow:none;transform:translateY(-1px)}
.btn.danger{background:linear-gradient(135deg,#ef4444,#f97316);box-shadow:0 8px 20px -8px rgba(239,68,68,.6)}
.btn.block{width:100%}
.btn.lg{padding:15px 30px;font-size:1.02rem;border-radius:var(--r)}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Tables ---------- */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);overflow:hidden}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:560px}
th,td{padding:14px 18px;text-align:left;font-size:.9rem;border-bottom:1px solid var(--border)}
thead th{background:var(--surface-2);color:var(--muted);font-weight:600;font-size:.76rem;letter-spacing:.04em;text-transform:uppercase}
tbody tr{transition:background var(--t-fast)}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--surface-2)}
.jp-term{font-family:var(--font-jp);font-size:1.1rem;font-weight:600}
.reading{color:var(--brand-2);font-size:.88rem}

/* ---------- Flashcards ---------- */
.fc-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:14px 0 18px;flex-wrap:wrap}
.fc-count{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums}
.fc-count b{color:var(--text);font-size:1.05rem}
.flashcard{perspective:1600px;margin:6px auto;max-width:600px;height:340px;cursor:pointer}
.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .65s var(--ease);transform-style:preserve-3d}
.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}
.fc-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--r-xl);display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:32px;text-align:center;border:1px solid var(--border);box-shadow:var(--shadow-lg)}
.fc-front{background:var(--surface)}
.fc-back{background:linear-gradient(160deg,var(--surface),var(--surface-2));transform:rotateY(180deg)}
.fc-face .corner{position:absolute;top:18px;left:20px;font-size:.72rem;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.fc-term{font-family:var(--font-jp);font-size:3.4rem;font-weight:700;line-height:1.15}
.fc-reading{color:var(--brand-2);font-size:1.25rem;margin-top:12px;font-family:var(--font-jp)}
.fc-meaning{font-size:1.7rem;font-weight:680}
.fc-extra{color:var(--muted);margin-top:14px;font-size:1rem;max-width:92%;font-family:var(--font-jp)}
.fc-hint{position:absolute;bottom:18px;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.78rem}
.fc-controls{display:flex;justify-content:center;gap:12px;margin-top:22px}

/* ---------- Quiz brief (start) ---------- */
.quiz-brief{display:grid;grid-template-columns:1fr;gap:10px;margin-bottom:20px}
.qb-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--surface-2)}
.qb-item .si{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--grad-soft);color:var(--brand-1);flex:none}
.qb-item b{display:block;font-size:1.05rem;line-height:1.2}
.qb-item span{color:var(--muted);font-size:.82rem}

/* ---------- Quiz ---------- */
.quiz-head{display:flex;justify-content:space-between;align-items:center;margin:16px 0 14px;gap:12px;flex-wrap:wrap}
.progress{height:8px;background:var(--surface-2);border-radius:var(--pill);overflow:hidden;border:1px solid var(--border)}
.progress>i{display:block;height:100%;width:0;border-radius:var(--pill);background:var(--grad);transition:width .35s var(--ease)}
.progress-sticky{position:sticky;top:68px;z-index:30;padding:12px 0;background:var(--bg);backdrop-filter:blur(6px)}
.qcard{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:26px;margin-bottom:18px;box-shadow:var(--shadow-sm)}
.qcard .qno{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-size:.76rem;font-weight:650;letter-spacing:.06em;text-transform:uppercase}
.qcard .qask{color:var(--muted);margin:10px 0 2px;font-size:.92rem}
.qcard .qterm{font-family:var(--font-jp);font-size:2.1rem;font-weight:700;margin:6px 0 20px;line-height:1.25}
.qcard .qterm .reading{display:block;font-size:.98rem;font-weight:500;margin-top:4px}
.options{display:grid;gap:11px}
.option{display:flex;align-items:center;gap:13px;padding:15px 17px;border:1px solid var(--border);border-radius:var(--r-sm);
  cursor:pointer;background:var(--surface-2);transition:border-color var(--t-fast),background var(--t-fast),transform var(--t-fast)}
.option:hover{border-color:var(--brand-2);transform:translateX(2px)}
.option input{position:absolute;opacity:0;pointer-events:none}
.option .dot{width:22px;height:22px;border-radius:50%;border:2px solid var(--border-strong);flex:none;display:grid;place-items:center;transition:var(--t-fast)}
.option .dot::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--grad);transform:scale(0);transition:transform var(--t-fast)}
.option.selected{border-color:var(--brand-2);background:var(--grad-soft)}
.option.selected .dot{border-color:var(--brand-2)}
.option.selected .dot::after{transform:scale(1)}
.option .opt-txt{font-family:var(--font-jp)}
.option.correct{border-color:var(--green);background:var(--green-bg)}
.option.wrong{border-color:var(--red);background:var(--red-bg)}
.option .mark{margin-left:auto;display:inline-flex}
.option.correct .mark{color:var(--green)} .option.wrong .mark{color:var(--red)}

/* ---------- Result ---------- */
.score-card{text-align:center;padding:42px 28px;border-radius:var(--r-xl);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-lg)}
.score-ring{width:184px;height:184px;border-radius:50%;margin:6px auto 18px;display:grid;place-items:center;position:relative;
  background:conic-gradient(var(--brand-2) calc(var(--p)*1%),var(--surface-2) 0)}
.score-ring::after{content:"";position:absolute;inset:12px;border-radius:50%;background:var(--surface)}
.score-ring .inner{position:relative;z-index:1;text-align:center}
.score-ring b{font-size:2.9rem;font-weight:760;line-height:1}
.score-ring span{color:var(--muted);font-size:.82rem}
.result-meta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:6px}
.result-meta .rm{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.9rem}
.result-meta .rm b{color:var(--text)}

/* ---------- Forms ---------- */
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:30px;box-shadow:var(--shadow);max-width:520px;margin:0 auto}
.form-card.wide{max-width:780px}
.field{margin-bottom:18px}
.field label{display:block;margin-bottom:7px;font-weight:600;font-size:.86rem;color:var(--text-soft)}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:var(--r-sm);border:1px solid var(--border-strong);
  background:var(--surface-2);color:var(--text);font-family:inherit;font-size:.95rem;transition:border-color var(--t-fast),box-shadow var(--t-fast)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px var(--ring)}
.field input:disabled{opacity:.7;cursor:not-allowed}
.field textarea{min-height:84px;resize:vertical}
.field .err{color:var(--red);font-size:.82rem;margin-top:5px}
.field .hint{color:var(--muted);font-size:.8rem;margin-top:5px}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:620px){.row-2{grid-template-columns:1fr}}
.checkbox{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--text-soft);cursor:pointer;margin-bottom:16px}
.checkbox input{width:18px;height:18px;accent-color:var(--brand-1)}

/* ---------- Alerts / pills ---------- */
.alert{display:flex;align-items:center;gap:11px;padding:13px 16px;border-radius:var(--r-sm);margin:18px 0;border:1px solid;font-size:.92rem;font-weight:500}
.alert.success{background:var(--green-bg);border-color:var(--green);color:var(--green)}
.alert.error{background:var(--red-bg);border-color:var(--red);color:var(--red)}
.pill{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:var(--pill);font-size:.76rem;font-weight:650;border:1px solid var(--border)}
.pill.green{background:var(--green-bg);color:var(--green);border-color:transparent}
.pill.red{background:var(--red-bg);color:var(--red);border-color:transparent}
.pill.level{background:var(--grad-soft);color:var(--brand-2);border-color:transparent}

/* ---------- Progress mini bar ---------- */
.pbar{height:7px;border-radius:var(--pill);background:var(--surface-2);overflow:hidden;border:1px solid var(--border)}
.pbar>i{display:block;height:100%;border-radius:var(--pill);background:var(--grad);transition:width .5s var(--ease)}
.pbar.n5>i{background:var(--n5-l)} .pbar.n4>i{background:var(--n4-l)} .pbar.n3>i{background:var(--n3-l)}
.pmeta{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--muted);margin:8px 0 6px}
.pmeta b{color:var(--text)}

/* ---------- Heatmap ---------- */
.heatmap{display:grid;grid-template-rows:repeat(7,1fr);grid-auto-flow:column;gap:4px;overflow-x:auto;padding:4px 0}
.hm-cell{width:14px;height:14px;border-radius:4px;border:1px solid var(--border)}
.hm-legend{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.78rem;margin-top:10px}
.hm-legend span{width:14px;height:14px;border-radius:4px;border:1px solid var(--border)}

/* ---------- Mastery buttons (flashcard) ---------- */
.mastery{display:flex;justify-content:center;gap:10px;margin-top:18px;flex-wrap:wrap}
.mbtn{display:inline-flex;align-items:center;gap:7px;padding:10px 18px;border-radius:var(--pill);border:1.5px solid var(--border-strong);
  background:var(--surface);color:var(--text-soft);font-weight:600;font-size:.88rem;cursor:pointer;transition:var(--t-fast)}
.mbtn:hover{transform:translateY(-2px)}
.mbtn small{font-weight:500;font-size:.72rem;opacity:.7}
.mbtn[data-r="again"]{color:var(--red);border-color:color-mix(in srgb,var(--red) 50%,transparent)}
.mbtn[data-r="again"]:hover{background:var(--red-bg);border-color:var(--red)}
.mbtn[data-r="hard"]{color:var(--amber);border-color:color-mix(in srgb,var(--amber) 50%,transparent)}
.mbtn[data-r="hard"]:hover{background:rgba(212,168,67,.14);border-color:var(--amber)}
.mbtn[data-r="good"]{color:var(--brand-1);border-color:color-mix(in srgb,var(--brand-1) 50%,transparent)}
.mbtn[data-r="good"]:hover{background:var(--grad-soft);border-color:var(--brand-1)}
.mbtn[data-r="easy"]{color:var(--green);border-color:color-mix(in srgb,var(--green) 50%,transparent)}
.mbtn[data-r="easy"]:hover{background:var(--green-bg);border-color:var(--green)}
.chip-belum{background:var(--surface-2);color:var(--muted)}
.chip-ragu{background:rgba(212,168,67,.16);color:var(--amber)}
.chip-hapal{background:var(--green-bg);color:var(--green)}

/* ---------- Leaderboard ---------- */
.lb-top{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
@media(max-width:680px){.lb-top{grid-template-columns:1fr}}
.lb-podium{position:relative;text-align:center;padding:26px 18px;border-radius:var(--r-lg);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-sm)}
.lb-podium .rank{position:absolute;top:14px;left:16px;font-family:var(--font-display);font-weight:900;font-size:1.3rem;color:var(--muted)}
.lb-podium.p1{border-color:var(--gold);box-shadow:0 14px 40px -14px rgba(212,168,67,.5)} .lb-podium.p1 .rank{color:var(--gold)}
.lb-podium .lb-av{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;margin:6px auto 10px;background:var(--grad);color:#fff;font-size:1.4rem;font-weight:700}
.lb-podium.p1 .lb-av{background:linear-gradient(135deg,var(--gold),var(--gold-l));font-size:1.6rem;width:72px;height:72px}
.lb-podium .lb-name{font-weight:700}
.lb-podium .lb-sub{color:var(--muted);font-size:.84rem;margin-top:3px}
.row-me{background:var(--grad-soft)!important}
.rank-badge{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--surface-2);font-weight:700;font-size:.82rem;color:var(--text-soft)}

/* ---------- Kelas Hapyou ---------- */
.hapyou-week.done{border-color:color-mix(in srgb,var(--green) 30%,transparent)}
.hw-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.hw-title{display:flex;align-items:center;gap:10px;min-width:0}
.hi-right{display:flex;align-items:center;gap:6px;flex:none}
.hi-chip{font-size:.72rem;font-weight:650;padding:4px 10px;border-radius:var(--pill);background:var(--surface-2);color:var(--muted)}
.hapyou-week.done .hi-chip{background:var(--green-bg);color:var(--green)}
.hw-topics{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.hw-topics li{display:flex;align-items:center;gap:10px;padding:7px 9px;border-radius:var(--r-xs);font-size:.95rem}
.hw-topics li:hover{background:var(--surface-2)}
.hw-topics .tn{flex:none;width:21px;height:21px;border-radius:6px;display:grid;place-items:center;background:var(--surface-2);font-size:.72rem;font-weight:700;color:var(--muted)}
.hi-form{margin-top:14px;padding:14px;border-radius:var(--r-sm);background:var(--surface-2);display:flex;flex-direction:column;gap:8px;border:1px solid var(--border)}
.hi-form-label{font-size:.84rem;font-weight:600;color:var(--text-soft)}
.hi-form input{padding:10px 12px;border-radius:var(--r-xs);border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font-family:inherit;font-size:.9rem}
.hi-form input:focus{outline:none;border-color:var(--brand-1);box-shadow:0 0 0 3px var(--ring)}
.hi-formbtn{display:flex;gap:8px}
.hi-err{color:var(--red);font-size:.8rem}

/* ---------- Anti-cheat ---------- */
.quiz-notice{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:var(--r-sm);margin:16px 0;
  border:1px solid color-mix(in srgb,var(--amber) 45%,transparent);background:rgba(212,168,67,.10);color:var(--text-soft);font-size:.9rem}
.quiz-notice .ic{color:var(--amber);margin-top:2px}
.quiz-notice b{color:var(--text)}
.guard-overlay{position:fixed;inset:0;z-index:9998;display:none;place-items:center;padding:24px;
  background:rgba(8,8,16,.78);backdrop-filter:blur(8px)}
.guard-overlay.show{display:grid}
.guard-card{max-width:440px;text-align:center;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:34px 28px;box-shadow:var(--shadow-lg)}
.guard-card .gi{width:64px;height:64px;border-radius:20px;display:grid;place-items:center;margin:0 auto 16px;
  background:var(--red-bg);color:var(--red)}
.guard-card h2{font-size:1.4rem;margin-bottom:8px}
.guard-card p{color:var(--muted);font-size:.92rem;margin:0 0 20px}

/* ---------- Pass / fail badge ---------- */
.verdict{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:var(--pill);font-weight:700;font-size:.95rem;margin-top:6px}
.verdict.pass{background:var(--green-bg);color:var(--green)}
.verdict.fail{background:var(--red-bg);color:var(--red)}

footer{margin:64px 0 36px;text-align:center;color:var(--muted);font-size:.85rem}

/* ---------- Admin shell ---------- */
.admin-shell{display:grid;grid-template-columns:264px 1fr;min-height:100vh}
.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:24px 18px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.sidebar .brand{margin-bottom:6px;padding:0 6px}
.side-label{font-size:.7rem;font-weight:650;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:22px 8px 8px}
.sidebar nav{display:flex;flex-direction:column;gap:3px}
.sidebar nav a{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:var(--r-sm);color:var(--muted);font-weight:550;font-size:.92rem;transition:var(--t-fast)}
.sidebar nav a:hover{background:var(--surface-2);color:var(--text)}
.sidebar nav a.active{background:var(--grad);color:#fff;box-shadow:0 8px 20px -8px rgba(192,57,43,.5)}
.sidebar .side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--border)}
.admin-main{padding:30px 36px;min-width:0}
.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px;gap:14px;flex-wrap:wrap}
.admin-top h1{font-size:1.55rem;font-weight:720}
.admin-top .who{display:flex;align-items:center;gap:10px;color:var(--text-soft);font-size:.9rem;font-weight:550}
@media(max-width:860px){.admin-shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;flex-direction:column}.admin-main{padding:22px 18px}}

.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:26px}
@media(max-width:860px){.stat-cards{grid-template-columns:1fr 1fr}}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:20px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.stat-card .si{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:var(--grad-soft);color:var(--brand-2);margin-bottom:14px}
.stat-card b{font-size:1.8rem;font-weight:740;display:block;line-height:1.1}
.stat-card span{color:var(--muted);font-size:.84rem}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:18px}
.toolbar form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.input-icon{position:relative;display:flex;align-items:center}
.input-icon .ic{position:absolute;left:12px;color:var(--muted);pointer-events:none}
.input-icon input{padding:10px 14px 10px 38px;border-radius:var(--r-sm);border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font-family:inherit}
.toolbar select{padding:10px 14px;border-radius:var(--r-sm);border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font-family:inherit}

.actions{display:flex;gap:8px;align-items:center}
.icon-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:var(--r-xs);border:1px solid var(--border-strong);
  background:var(--surface);color:var(--text-soft);font-size:.82rem;font-weight:600;cursor:pointer;transition:var(--t-fast)}
.icon-btn:hover{border-color:var(--brand-2);color:var(--text)}
.icon-btn.del:hover{border-color:var(--red);color:var(--red)}

.pagination{display:flex;gap:6px;flex-wrap:wrap;margin-top:20px;list-style:none;padding:0}
.pagination li a,.pagination li span{display:grid;place-items:center;min-width:38px;height:38px;padding:0 11px;border:1px solid var(--border);
  border-radius:var(--r-xs);color:var(--text-soft);font-size:.86rem;font-weight:550;transition:var(--t-fast)}
.pagination li a:hover{border-color:var(--brand-2);color:var(--text)}
.pagination li.active span{background:var(--grad);color:#fff;border-color:transparent}
.pagination li.disabled span{opacity:.4}

/* ---------- Auth ---------- */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;position:relative;overflow:hidden}
.auth-card{width:100%;max-width:430px;position:relative;z-index:1}
.auth-card .brand{justify-content:center;margin-bottom:22px;font-size:1.2rem}
.auth-card h1{text-align:center;font-size:1.7rem;font-weight:720}
.auth-card .sub{text-align:center;color:var(--muted);margin:6px 0 24px;font-size:.94rem}
.auth-foot{text-align:center;color:var(--muted);font-size:.85rem;margin-top:18px}

/* ---------- Motion ---------- */
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
[data-reveal]{opacity:0;transform:translateY(20px)}
[data-reveal].in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}[data-reveal]{opacity:1;transform:none}}