/* =========================================================
   Cek Desil — Design System
   ========================================================= */
:root {
    --bg: hsl(232 38% 7%);
    --bg-2: hsl(232 32% 11%);
    --surface: hsla(230, 35%, 18%, .55);
    --surface-2: hsla(230, 35%, 24%, .55);
    --border: hsla(230, 60%, 80%, .10);
    --border-strong: hsla(230, 60%, 80%, .20);
    --text: hsl(228 40% 96%);
    --muted: hsl(228 18% 68%);
    --faint: hsl(228 14% 48%);

    --primary: hsl(252 92% 68%);
    --primary-2: hsl(198 95% 58%);
    --grad: linear-gradient(135deg, hsl(252 92% 66%), hsl(212 95% 60%) 55%, hsl(178 85% 50%));
    --success: hsl(158 72% 48%);
    --warning: hsl(38 95% 58%);
    --danger: hsl(350 88% 64%);
    --info: hsl(198 95% 60%);

    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 20px 50px -20px hsla(240, 80%, 2%, .8), 0 0 0 1px var(--border);
    --font: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
    --ease: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
    font-family: var(--font);
    background: radial-gradient(1200px 700px at 10% -10%, hsl(252 60% 18%), transparent 60%),
                radial-gradient(900px 600px at 110% 10%, hsl(198 70% 14%), transparent 60%),
                var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}
a { color: var(--primary-2); text-decoration: none; }
h1, h2, h3 { margin: 0 0 .4em; letter-spacing: -.02em; line-height: 1.2; }
h1 { font-size: clamp(1.6rem, 2.4vw, 2.2rem); font-weight: 800; }
h2 { font-size: 1.15rem; font-weight: 700; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.mono { font-family: var(--mono); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Animated background orbs */
.bg-orbs { position: fixed; inset: 0; pointer-events: none; z-index: -1; overflow: hidden; }
.bg-orbs span {
    position: absolute; border-radius: 50%; filter: blur(80px); opacity: .35;
    animation: float 22s ease-in-out infinite;
}
.bg-orbs span:nth-child(1) { width: 420px; height: 420px; background: hsl(252 90% 55%); top: -120px; left: -80px; }
.bg-orbs span:nth-child(2) { width: 360px; height: 360px; background: hsl(190 90% 45%); bottom: -120px; right: -60px; animation-delay: -8s; }
.bg-orbs span:nth-child(3) { width: 260px; height: 260px; background: hsl(320 80% 55%); top: 40%; left: 55%; opacity: .18; animation-delay: -14s; }
@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.08); }
    66% { transform: translate(-30px, 30px) scale(.95); }
}

/* Layout */
.container { max-width: 1240px; margin: 0 auto; padding: 28px 22px 80px; }
.topbar {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: 18px;
    padding: 12px 22px;
    background: hsla(232, 38%, 8%, .7);
    backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; font-size: 1.1rem; }
.brand b { font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-mark {
    width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
    background: var(--grad); color: #fff; font-weight: 800; box-shadow: 0 6px 20px -6px hsl(252 92% 60%);
}
.brand-lg { font-size: 1.4rem; margin-bottom: 18px; }
.brand-lg .brand-mark { width: 44px; height: 44px; font-size: 1.3rem; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
    display: flex; align-items: center; gap: 8px; padding: 9px 14px; border-radius: 10px;
    color: var(--muted); font-weight: 600; font-size: .92rem; transition: all .2s var(--ease);
}
.nav a svg { width: 17px; height: 17px; }
.nav a:hover { color: var(--text); background: var(--surface); }
.nav a.active { color: var(--text); background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--border-strong); }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; flex-wrap: wrap; margin-bottom: 24px; }
.page-head p { margin: 0; }
.grid { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: 1.4fr 1fr; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.mt { margin-top: 18px; }

/* Cards */
.glass, .card {
    background: var(--surface);
    backdrop-filter: blur(18px) saturate(140%);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card { padding: 22px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.card-head h2 { margin: 0; }

.stat { position: relative; overflow: hidden; padding: 20px 22px; }
.stat .label { color: var(--muted); font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.stat .value { font-size: 2.1rem; font-weight: 800; letter-spacing: -.03em; margin-top: 4px; }
.stat::after {
    content: ''; position: absolute; right: -30px; top: -30px; width: 110px; height: 110px; border-radius: 50%;
    background: var(--accent, var(--primary)); opacity: .14; filter: blur(4px);
}
.stat.s-success { --accent: var(--success); }
.stat.s-warning { --accent: var(--warning); }
.stat.s-danger  { --accent: var(--danger); }

/* Buttons */
.btn {
    --b: var(--surface-2);
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    border: 0; cursor: pointer; font: inherit; font-weight: 700; font-size: .92rem;
    padding: 10px 18px; border-radius: 12px; color: var(--text); background: var(--b);
    box-shadow: inset 0 0 0 1px var(--border-strong);
    transition: transform .15s var(--ease), box-shadow .2s, filter .2s, background .2s;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.12); }
.btn:active { transform: translateY(0) scale(.98); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--grad); box-shadow: 0 10px 30px -10px hsl(240 92% 60%); color: #fff; }
.btn-success { background: linear-gradient(135deg, hsl(158 72% 40%), hsl(170 80% 45%)); box-shadow: none; }
.btn-danger  { background: hsla(350, 88%, 60%, .16); color: hsl(350 95% 78%); box-shadow: inset 0 0 0 1px hsla(350, 88%, 64%, .35); }
.btn-ghost   { background: transparent; }
.btn-sm { padding: 7px 12px; font-size: .84rem; border-radius: 10px; }
.btn-lg { padding: 14px 22px; font-size: 1rem; }
.btn-block { width: 100%; }

/* Inputs */
.label { display: block; font-weight: 600; font-size: .86rem; color: var(--muted); margin: 0 0 6px; }
.input, .select {
    width: 100%; font: inherit; color: var(--text);
    background: hsla(232, 40%, 6%, .6); border: 1px solid var(--border-strong);
    border-radius: 12px; padding: 10px 14px; outline: none; transition: border .2s, box-shadow .2s;
}
.input:focus, .select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px hsla(252, 92%, 68%, .2); }
.input-lg { padding: 14px 16px; font-size: 1.05rem; }
.select { appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23a5acc8' stroke-width='2'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.select option { background: var(--bg-2); }

/* Alerts & badges */
.alert { padding: 12px 16px; border-radius: 12px; margin: 12px 0; font-size: .92rem; }
.alert-danger { background: hsla(350, 88%, 60%, .12); color: hsl(350 95% 82%); box-shadow: inset 0 0 0 1px hsla(350, 88%, 64%, .3); }
.alert-info { background: hsla(198, 95%, 60%, .10); color: hsl(198 95% 82%); box-shadow: inset 0 0 0 1px hsla(198, 95%, 60%, .3); }
.alert-warning { background: hsla(38, 95%, 58%, .10); color: hsl(38 95% 80%); box-shadow: inset 0 0 0 1px hsla(38, 95%, 58%, .3); }

.badge {
    display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px;
    font-size: .76rem; font-weight: 700; white-space: nowrap;
    background: var(--surface-2); color: var(--muted);
}
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.b-done { background: hsla(158, 72%, 48%, .14); color: hsl(158 72% 62%); }
.b-pending { background: hsla(228, 20%, 60%, .14); color: hsl(228 25% 75%); }
.b-notfound { background: hsla(38, 95%, 58%, .14); color: hsl(38 95% 66%); }
.b-skip, .b-error { background: hsla(350, 88%, 64%, .14); color: hsl(350 95% 72%); }

.desil-chip {
    display: inline-grid; place-items: center; min-width: 46px; padding: 4px 10px; border-radius: 9px;
    font-family: var(--mono); font-weight: 700; font-size: .85rem;
    background: hsla(252, 92%, 68%, .16); color: hsl(252 100% 84%);
}
.desil-chip.d-low { background: hsla(350, 88%, 64%, .16); color: hsl(350 100% 80%); }
.desil-chip.d-mid { background: hsla(38, 95%, 58%, .16); color: hsl(38 100% 74%); }
.desil-chip.d-high { background: hsla(158, 72%, 48%, .16); color: hsl(158 80% 66%); }
.desil-chip.d-none { background: var(--surface-2); color: var(--muted); font-family: var(--font); font-weight: 600; }

/* Progress */
.progress { height: 8px; border-radius: 99px; background: hsla(230, 40%, 30%, .45); overflow: hidden; }
.progress > span { display: block; height: 100%; border-radius: inherit; background: var(--grad); transition: width .6s var(--ease); }

/* Tables */
.table-wrap { overflow: auto; border-radius: var(--radius-sm); max-height: 70vh; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { position: sticky; top: 0; background: hsl(232 32% 13%); color: var(--muted); font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; z-index: 1; }
tbody tr { transition: background .15s; }
tbody tr:hover { background: hsla(230, 50%, 50%, .06); }
td .select { padding: 6px 30px 6px 10px; font-size: .85rem; min-width: 140px; }

/* Drop zone */
.drop {
    display: grid; place-items: center; text-align: center; gap: 8px;
    border: 2px dashed var(--border-strong); border-radius: var(--radius); padding: 34px 20px;
    cursor: pointer; transition: all .2s var(--ease); background: hsla(232, 40%, 6%, .35);
}
.drop:hover, .drop.drag { border-color: var(--primary); background: hsla(252, 92%, 68%, .08); }
.drop svg { width: 40px; height: 40px; color: var(--primary); }
.drop input { display: none; }

/* Distribution bars */
.dist { display: grid; gap: 10px; }
.dist-row { display: grid; grid-template-columns: 120px 1fr 44px; gap: 12px; align-items: center; font-size: .88rem; }
.dist-row .bar { height: 10px; border-radius: 99px; background: hsla(230, 40%, 30%, .45); overflow: hidden; }
.dist-row .bar span { display: block; height: 100%; background: var(--grad); border-radius: inherit; transition: width .7s var(--ease); }

/* Class list */
.class-item { display: grid; grid-template-columns: 1fr auto; gap: 8px 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.class-item:last-child { border-bottom: 0; }
.class-item .name { font-weight: 700; }
.class-item .meta { font-size: .82rem; color: var(--muted); }
.class-item .progress { grid-column: 1 / -1; }

/* ==================== CHECKER ==================== */
.checker { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.checker-main { padding: 30px; position: relative; overflow: hidden; }
.checker-main::before {
    content: ''; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--grad);
    transform-origin: left; transform: scaleX(var(--p, 0)); transition: transform .5s var(--ease);
}
.student-kelas { display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--primary-2); }
.student-name { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 800; letter-spacing: -.03em; margin: 6px 0 4px; }
.student-nik { font-family: var(--mono); font-size: 1.15rem; color: var(--muted); letter-spacing: .08em; display: flex; align-items: center; gap: 10px; }
.copy-btn { background: none; border: 0; color: var(--faint); cursor: pointer; padding: 4px; border-radius: 6px; }
.copy-btn:hover { color: var(--text); background: var(--surface-2); }

.captcha-zone { margin-top: 26px; display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; }
.captcha-frame {
    position: relative; background: #fff; border-radius: 14px; padding: 8px; min-width: 260px; min-height: 84px;
    display: grid; place-items: center; box-shadow: 0 10px 30px -12px hsla(0, 0%, 0%, .6);
}
.captcha-frame img { display: block; height: 72px; width: auto; image-rendering: auto; transform: scale(1.0); }
.captcha-frame.loading::after {
    content: ''; position: absolute; inset: 0; border-radius: inherit;
    background: linear-gradient(90deg, transparent, hsla(252, 92%, 68%, .25), transparent);
    background-size: 200% 100%; animation: shimmer 1s linear infinite;
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }
.captcha-refresh { position: absolute; right: -14px; top: -14px; width: 34px; height: 34px; border-radius: 50%; border: 0; cursor: pointer; background: var(--bg-2); color: var(--text); box-shadow: 0 0 0 1px var(--border-strong); display: grid; place-items: center; }
.captcha-refresh:hover { background: var(--primary); }
.captcha-refresh svg { width: 16px; height: 16px; }
.captcha-input {
    font-family: var(--mono); font-size: 2rem; font-weight: 700; letter-spacing: .3em; text-align: center;
    padding: 16px; text-transform: none;
}
.hint { font-size: .8rem; color: var(--faint); margin-top: 10px; display: flex; gap: 14px; flex-wrap: wrap; }
kbd { font-family: var(--mono); font-size: .74rem; padding: 2px 7px; border-radius: 6px; background: var(--surface-2); box-shadow: inset 0 -2px 0 hsla(0,0%,0%,.3), 0 0 0 1px var(--border-strong); color: var(--text); }

.result-box { margin-top: 22px; border-radius: 14px; padding: 16px 18px; display: none; animation: pop .35s var(--ease); }
.result-box.show { display: block; }
.result-box.ok { background: hsla(158, 72%, 48%, .12); box-shadow: inset 0 0 0 1px hsla(158, 72%, 48%, .35); }
.result-box.warn { background: hsla(38, 95%, 58%, .10); box-shadow: inset 0 0 0 1px hsla(38, 95%, 58%, .35); }
.result-box.err { background: hsla(350, 88%, 64%, .10); box-shadow: inset 0 0 0 1px hsla(350, 88%, 64%, .35); }
.result-box .snippet { font-size: .82rem; color: var(--muted); margin-top: 8px; max-height: 110px; overflow: auto; }
.manual-btns { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
@keyframes pop { from { opacity: 0; transform: translateY(6px) scale(.98); } to { opacity: 1; transform: none; } }
.shake { animation: shake .4s; }
@keyframes shake { 20%, 60% { transform: translateX(-8px); } 40%, 80% { transform: translateX(8px); } }
.flash-ok { animation: flashok .7s; }
@keyframes flashok { 0% { box-shadow: 0 0 0 0 hsla(158, 72%, 48%, .7), var(--shadow); } 100% { box-shadow: 0 0 0 24px hsla(158, 72%, 48%, 0), var(--shadow); } }

.side-card { padding: 20px; }
.mini-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mini-stats div { background: hsla(232, 40%, 6%, .4); border-radius: 12px; padding: 12px; }
.mini-stats b { display: block; font-size: 1.4rem; font-weight: 800; }
.mini-stats span { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; font-weight: 600; }
.log { list-style: none; margin: 0; padding: 0; max-height: 330px; overflow: auto; }
.log li { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--border); font-size: .86rem; animation: pop .3s var(--ease); }
.log li .n { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.queue { list-style: none; margin: 0; padding: 0; counter-reset: q; }
.queue li { counter-increment: q; padding: 7px 0; font-size: .86rem; color: var(--muted); display: flex; gap: 10px; }
.queue li::before { content: counter(q); width: 22px; height: 22px; border-radius: 7px; background: var(--surface-2); display: grid; place-items: center; font-size: .72rem; font-weight: 700; flex: none; }

.empty { text-align: center; padding: 50px 20px; }
.empty .big { font-size: 3.5rem; }

/* Toast */
.toast-wrap { position: fixed; right: 20px; bottom: 20px; display: grid; gap: 10px; z-index: 200; }
.toast {
    min-width: 260px; max-width: 380px; padding: 12px 16px; border-radius: 12px; font-size: .9rem; font-weight: 600;
    background: hsl(232 32% 15%); box-shadow: var(--shadow); border-left: 4px solid var(--info);
    animation: pop .3s var(--ease);
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }

/* Login */
.login-page { display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 400px; padding: 36px; }
.login-card form { display: grid; gap: 14px; margin-top: 20px; }

/* Modal */
.modal { position: fixed; inset: 0; background: hsla(232, 50%, 3%, .7); backdrop-filter: blur(6px); display: none; place-items: center; z-index: 150; padding: 20px; }
.modal.open { display: grid; animation: pop .25s var(--ease); }
.modal .card { width: 100%; max-width: 560px; }

/* Responsive */
@media (max-width: 980px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-2, .checker { grid-template-columns: 1fr; }
    .captcha-zone { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .nav a span { display: none; }
    .topbar { gap: 8px; padding: 10px 14px; }
    .container { padding: 18px 14px 60px; }
    .checker-main { padding: 20px; }
}