/* ============================================================
   SIMKAS — Cek Tagihan (public) · Premium dark theme
   Matches the landing page aesthetic. Namespaced .ck-*
   Self-contained (no Bootstrap / AdminLTE dependency).
   ============================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; }

:root {
  --bg-0: #000000;
  --bg-1: #060611;

  --accent: #7c3aed;
  --accent-bright: #a78bfa;
  --blue: #3b82f6;
  --blue-bright: #60a5fa;
  --cyan: #06b6d4;
  --cyan-bright: #22d3ee;
  --green: #10b981;
  --green-bright: #34d399;
  --red: #f43f5e;
  --amber: #f59e0b;

  --ink: #ffffff;
  --dim: rgba(255,255,255,.6);
  --faint: rgba(255,255,255,.35);
  --muted: rgba(255,255,255,.16);

  --glass: rgba(255,255,255,.03);
  --glass-2: rgba(255,255,255,.06);
  --line: rgba(124,58,237,.25);
  --line-soft: rgba(255,255,255,.08);

  --ease: cubic-bezier(.22,.61,.36,1);
  --font-display: "Plus Jakarta Sans", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

body {
  min-height: 100vh; overflow-x: hidden;
  background: var(--bg-0);
  font-family: var(--font-body); color: var(--ink);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}

/* ---------- Background ---------- */
.ck-bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.ck-bg .blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .4; mix-blend-mode: screen; will-change: transform; }
.ck-bg .b1 { width: 50vw; height: 50vw; left: -14vw; top: -20vw;
  background: radial-gradient(circle at 40% 40%, rgba(124,58,237,.55), transparent 60%);
  animation: ckDrift 26s var(--ease) infinite; }
.ck-bg .b2 { width: 40vw; height: 40vw; right: -12vw; top: 4vw;
  background: radial-gradient(circle at 50% 50%, rgba(59,130,246,.45), transparent 58%);
  animation: ckDrift 30s var(--ease) infinite reverse; }
.ck-bg .b3 { width: 34vw; height: 34vw; left: 30vw; bottom: -18vw;
  background: radial-gradient(circle at 50% 50%, rgba(6,182,212,.3), transparent 58%);
  animation: ckDrift 34s var(--ease) infinite; }
.ck-bg .grid { position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 34px 34px; mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 40%, transparent 100%); }
.ck-bg .vignette { position: absolute; inset: 0;
  background: radial-gradient(ellipse 120% 100% at 50% 20%, transparent 55%, rgba(0,0,0,.72) 100%); }

/* ---------- Nav ---------- */
.ck-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 14px clamp(16px,5vw,40px); display: flex; align-items: center; justify-content: space-between;
  background: rgba(0,0,0,.55); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-soft); }
.ck-nav-brand { display: flex; align-items: center; gap: 11px; }
.ck-nav-brand img { width: 34px; height: 34px; border-radius: 9px; object-fit: contain; }
.ck-nav-brand .n b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 14.5px; line-height: 1.1; letter-spacing: -.01em; }
.ck-nav-brand .n small { font-size: 10px; letter-spacing: .16em; text-transform: uppercase; color: var(--accent-bright); }
.ck-nav-back { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 11px;
  border: 1px solid var(--line-soft); background: var(--glass-2); color: var(--dim);
  font-size: 13.5px; font-weight: 500; transition: color .3s, border-color .3s, background .3s; }
.ck-nav-back:hover { color: var(--ink); border-color: var(--line); background: rgba(124,58,237,.1); }
.ck-nav-back svg { width: 16px; height: 16px; }

/* ---------- Shell ---------- */
.ck-wrap { position: relative; z-index: 2; max-width: 1080px; margin: 0 auto;
  padding: clamp(88px,12vw,116px) clamp(16px,5vw,32px) 60px; }

/* ---------- Hero + Search ---------- */
.ck-head { text-align: center; margin-bottom: 30px; animation: ckRise .7s var(--ease) both; }
.ck-badge { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px;
  padding: 6px 15px; border-radius: 999px; border: 1px solid var(--line-soft);
  background: rgba(124,58,237,.08); font-size: 11.5px; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent-bright); }
.ck-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-bright);
  box-shadow: 0 0 8px rgba(167,139,250,.7); animation: ckPulse 2s infinite; }
.ck-head h1 { font-family: var(--font-display); font-weight: 800; letter-spacing: -.02em;
  font-size: clamp(26px,4.5vw,44px); line-height: 1.05; }
.ck-head h1 .g { background: linear-gradient(135deg, #fff 0%, var(--accent-bright) 45%, var(--cyan-bright) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.ck-head p { margin: 12px auto 0; max-width: 52ch; font-size: 15px; line-height: 1.7; color: var(--dim); }

.ck-search { position: relative; margin: 0 auto 26px; max-width: 860px;
  animation: ckRise .7s var(--ease) .08s both; }
.ck-search-card { position: relative; padding: 10px; border-radius: 22px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  box-shadow: 0 30px 70px -34px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.05);
  display: grid; grid-template-columns: minmax(150px,220px) 1fr auto; gap: 10px; align-items: stretch; }
.ck-field { position: relative; display: flex; align-items: center; gap: 10px; padding: 0 14px;
  border-radius: 14px; border: 1px solid var(--line-soft); background: rgba(0,0,0,.35);
  transition: border-color .3s, box-shadow .3s; }
.ck-field:focus-within { border-color: rgba(124,58,237,.4); box-shadow: 0 0 0 3px rgba(124,58,237,.12); }
.ck-field > svg { width: 18px; height: 18px; color: var(--faint); flex: none; transition: color .3s; }
.ck-field:focus-within > svg { color: var(--accent-bright); }
.ck-field label { position: absolute; top: 7px; left: 44px; font-size: 9.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--faint); pointer-events: none; }
.ck-field.has-label input, .ck-field.has-label select { padding-top: 16px; }
.ck-field input, .ck-field select { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
  color: var(--ink); font-family: var(--font-body); font-size: 15px; padding: 14px 0; }
.ck-field select { cursor: pointer; -webkit-appearance: none; appearance: none; padding-right: 18px; }
.ck-field select option { background: #0b0b16; color: var(--ink); }
.ck-field .caret { position: absolute; right: 12px; width: 14px; height: 14px; color: var(--faint); pointer-events: none; }
.ck-field input::placeholder { color: var(--faint); }
.ck-go { display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 0 24px; border: 0; cursor: pointer; border-radius: 14px; color: #fff; font-weight: 700; font-size: 14.5px;
  font-family: var(--font-display);
  background: linear-gradient(135deg, var(--accent), var(--blue));
  box-shadow: 0 14px 30px -10px rgba(124,58,237,.6), inset 0 1px 0 rgba(255,255,255,.2);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease); }
.ck-go:hover { transform: translateY(-2px); box-shadow: 0 20px 40px -12px rgba(124,58,237,.75), inset 0 1px 0 rgba(255,255,255,.3); }
.ck-go:active { transform: translateY(0) scale(.98); }
.ck-go svg { width: 17px; height: 17px; }

/* Autocomplete */
.ck-ac { position: absolute; z-index: 9999; display: none; padding: 6px; border-radius: 16px;
  border: 1px solid var(--line-soft); background: rgba(10,10,20,.97);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 30px 70px -20px rgba(0,0,0,.95); max-height: 320px; overflow-y: auto; }
.ck-ac.show { display: block; }
.ck-ac-item { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 11px; cursor: pointer; transition: background .2s; }
.ck-ac-item.active, .ck-ac-item:hover { background: rgba(124,58,237,.14); }
.ck-ac-item .av { flex: none; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: .85rem; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--blue)); }
.ck-ac-item .nm { display: block; font-weight: 600; font-size: .92rem; color: var(--ink); line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ck-ac-item .nm b { color: var(--accent-bright); }
.ck-ac-item .mt { display: block; font-size: .75rem; color: var(--faint); margin-top: 2px; }
.ck-ac-item .mt b { color: var(--cyan-bright); }
.ck-ac-info { padding: 14px; text-align: center; color: var(--faint); font-size: .85rem; }
.ck-ac::-webkit-scrollbar { width: 6px; }
.ck-ac::-webkit-scrollbar-thumb { background: rgba(124,58,237,.3); border-radius: 999px; }

/* ---------- Results ---------- */
.ck-results { display: grid; grid-template-columns: 1fr; gap: 18px; }
.ck-col-2 { display: grid; grid-template-columns: 1fr 1.3fr; gap: 18px; align-items: start; }

.ck-card { position: relative; border-radius: 20px; border: 1px solid var(--line-soft);
  background: var(--glass-2); overflow: hidden;
  box-shadow: 0 20px 50px -30px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.04);
  animation: ckRise .6s var(--ease) both; }
.ck-card .hd { display: flex; align-items: center; gap: 10px; padding: 16px 20px; border-bottom: 1px solid var(--line-soft); }
.ck-card .hd .ic { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; flex: none;
  color: var(--accent-bright); background: rgba(124,58,237,.14); border: 1px solid rgba(124,58,237,.25); }
.ck-card .hd .ic svg { width: 17px; height: 17px; }
.ck-card .hd h3 { font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: -.01em; }
.ck-card .bd { padding: 8px 20px 18px; }

/* Student info rows */
.ck-avatar { display: flex; align-items: center; gap: 14px; padding: 16px 20px 6px; }
.ck-avatar .av { width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center; flex: none;
  font-family: var(--font-display); font-weight: 800; font-size: 22px; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  box-shadow: 0 12px 26px -10px rgba(124,58,237,.6); }
.ck-avatar .who b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 17px; line-height: 1.2; }
.ck-avatar .who span { font-size: 12.5px; color: var(--faint); }
.ck-info { list-style: none; }
.ck-info li { display: flex; justify-content: space-between; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--line-soft); font-size: 14px; }
.ck-info li:last-child { border-bottom: 0; }
.ck-info li .k { color: var(--faint); }
.ck-info li .v { color: var(--ink); font-weight: 600; text-align: right; }

/* Summary tiles */
.ck-tiles { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 4px; }
.ck-tile { position: relative; padding: 16px 18px; border-radius: 16px; border: 1px solid var(--line-soft);
  background: var(--glass-2); overflow: hidden; animation: ckRise .6s var(--ease) both; }
.ck-tile::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; }
.ck-tile.t-bill::before { background: linear-gradient(var(--amber), transparent); }
.ck-tile.t-paid::before { background: linear-gradient(var(--green-bright), transparent); }
.ck-tile.t-left::before { background: linear-gradient(var(--red), transparent); }
.ck-tile .lab { font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }
.ck-tile .val { font-family: var(--font-display); font-weight: 800; font-size: clamp(18px,2.4vw,24px); margin-top: 6px; letter-spacing: -.01em; }
.ck-tile.t-paid .val { color: var(--green-bright); }
.ck-tile.t-left .val { color: #fb7185; }

/* Tables */
.ck-tbl-wrap { overflow-x: auto; }
.ck-tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.ck-tbl th { text-align: left; padding: 11px 12px; font-family: var(--font-display); font-weight: 700;
  font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--faint);
  border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
.ck-tbl th.r, .ck-tbl td.r { text-align: right; }
.ck-tbl th.c, .ck-tbl td.c { text-align: center; }
.ck-tbl td { padding: 13px 12px; border-bottom: 1px solid var(--line-soft); color: var(--dim); }
.ck-tbl tbody tr:last-child td, .ck-tbl tbody tr:last-child td { border-bottom: 0; }
.ck-tbl td.nm { color: var(--ink); font-weight: 600; }
.ck-tbl tr.head-row td { color: var(--faint); font-weight: 700; font-size: 11px; letter-spacing: .05em; text-transform: uppercase; background: rgba(255,255,255,.02); }
.ck-toggle { cursor: pointer; transition: background .2s; }
.ck-toggle:hover { background: rgba(124,58,237,.06); }
.ck-toggle td.nm { display: flex; align-items: center; gap: 8px; }
.ck-toggle .chev { width: 14px; height: 14px; color: var(--accent-bright); transition: transform .3s var(--ease); flex: none; }
.ck-toggle.open .chev { transform: rotate(90deg); }
.ck-detail { display: none; }
.ck-detail.show { display: table-row-group; }

/* Pills */
.ck-pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px;
  font-size: 11.5px; font-weight: 700; white-space: nowrap; }
.ck-pill.ok { color: var(--green-bright); background: rgba(16,185,129,.14); border: 1px solid rgba(16,185,129,.3); }
.ck-pill.no { color: #fb7185; background: rgba(244,63,94,.12); border: 1px solid rgba(244,63,94,.3); }
.ck-pill.warn { color: var(--amber); background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.3); }

.ck-empty { padding: 30px 20px; text-align: center; color: var(--faint); font-size: 14px; }
.ck-empty svg { width: 34px; height: 34px; margin-bottom: 10px; opacity: .5; }

/* Not found */
.ck-notfound { max-width: 520px; margin: 30px auto 0; padding: 40px 28px; text-align: center;
  border-radius: 20px; border: 1px solid var(--line-soft); background: var(--glass-2); animation: ckRise .6s var(--ease) both; }
.ck-notfound .ic { width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 16px; display: grid; place-items: center;
  color: #fb7185; background: rgba(244,63,94,.1); border: 1px solid rgba(244,63,94,.28); }
.ck-notfound .ic svg { width: 28px; height: 28px; }
.ck-notfound h3 { font-family: var(--font-display); font-weight: 700; font-size: 18px; margin-bottom: 6px; }
.ck-notfound p { color: var(--dim); font-size: 14px; line-height: 1.6; }

/* ---------- Footer ---------- */
.ck-foot { position: relative; z-index: 2; margin-top: 40px; padding: 22px clamp(16px,5vw,32px);
  border-top: 1px solid var(--line-soft); text-align: center;
  font-size: 12.5px; color: var(--faint); }
.ck-foot a { color: var(--dim); }

/* ---------- Keyframes ---------- */
@keyframes ckRise { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes ckPulse { 0% { box-shadow: 0 0 0 0 rgba(167,139,250,.6); } 70% { box-shadow: 0 0 0 7px rgba(167,139,250,0); } 100% { box-shadow: 0 0 0 0 rgba(167,139,250,0); } }
@keyframes ckDrift { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(4vw,3vh) scale(1.08); } }

.ck-card:nth-of-type(1) { animation-delay: .1s; }
.ck-card:nth-of-type(2) { animation-delay: .16s; }
.ck-tile:nth-child(1) { animation-delay: .12s; }
.ck-tile:nth-child(2) { animation-delay: .17s; }
.ck-tile:nth-child(3) { animation-delay: .22s; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .ck-search-card { grid-template-columns: 1fr; }
  .ck-col-2 { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .ck-tiles { grid-template-columns: 1fr; }
  .ck-nav-brand .n small { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .ck-bg .blob, .ck-badge .dot { animation: none !important; }
  .ck-head, .ck-search, .ck-card, .ck-tile, .ck-notfound { animation: none !important; opacity: 1 !important; transform: none !important; }
}