/* Bilink — gaya aplikasi wali santri. Mobile dulu, mode terang & gelap. */

/* Warna utama Bilink: biru. Warna hijau hanya dipakai untuk penanda "lunas",
   supaya keberhasilan pembayaran tetap mudah dibedakan dari warna aplikasi. */

:root {
  --utama: #1565c0;
  --utama-tua: #0d47a1;
  --utama-muda: #e7f0fb;
  --emas: #f0b429;
  --merah: #c0392b;
  --merah-muda: #fdecea;
  --sukses: #14804a;
  --sukses-muda: #e4f3ea;

  --latar: #f1f4f8;
  --kartu: #ffffff;
  --kartu-2: #f7f9fc;
  --garis: #e2e7ee;
  --teks: #151d28;
  --teks-2: #59657a;
  --teks-3: #8a94a6;
  --bayang: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .07);
  --bayang-kuat: 0 10px 30px rgba(16, 24, 40, .15);
  --radius: 16px;
  --radius-kecil: 10px;
  --kepala: linear-gradient(160deg, var(--utama) 0%, var(--utama-tua) 100%);
  --atas-aman: env(safe-area-inset-top, 0px);
  --bawah-aman: env(safe-area-inset-bottom, 0px);
}

html[data-tema='gelap'] {
  --utama: #549bf0;
  --utama-tua: #10365f;
  --utama-muda: #13253c;
  --emas: #f5c451;
  --merah: #ef6a5c;
  --merah-muda: #3a1f1c;
  --sukses: #4cc38a;
  --sukses-muda: #123326;

  --latar: #0c1016;
  --kartu: #161c25;
  --kartu-2: #1c232e;
  --garis: #29313d;
  --teks: #e9eef6;
  --teks-2: #a4aebe;
  --teks-3: #6f7a8c;
  --bayang: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
  --bayang-kuat: 0 10px 30px rgba(0, 0, 0, .5);
  --kepala: linear-gradient(160deg, #1b4d85 0%, #0c2544 100%);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--latar);
  color: var(--teks);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

body, .kartu, .kepala, .nav-bawah, input, select, textarea, button {
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}
html.ganti-tema * { transition: none !important; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

h1, h2, h3, h4 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
p { margin: 0 0 .6em; }
a { color: var(--utama); text-decoration: none; }
button { font: inherit; cursor: pointer; }
.nomor { font-variant-numeric: tabular-nums; font-feature-settings: 'tnum' 1; }

/* ---------- rangka ---------- */

#aplikasi { min-height: 100vh; display: flex; flex-direction: column; }
.halaman { flex: 1; padding-bottom: calc(84px + var(--bawah-aman)); max-width: 560px; width: 100%; margin: 0 auto; }
.isi { padding: 0 16px; }
.isi-atas { padding: 16px; }

/* ---------- kepala ---------- */

.kepala {
  background: var(--kepala);
  color: #fff;
  padding: calc(14px + var(--atas-aman)) 16px 60px;
  border-radius: 0 0 26px 26px;
  position: relative;
  overflow: hidden;
}
.kepala::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .16) 1.1px, transparent 1.2px);
  background-size: 16px 16px;
  opacity: .6;
  pointer-events: none;
}
.kepala-baris { display: flex; align-items: center; gap: 12px; position: relative; z-index: 2; }
.kepala-sapaan { flex: 1; min-width: 0; }
.kepala-sapaan .kecil { font-size: 12.5px; opacity: .82; }
.kepala-sapaan .nama { font-size: 17px; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kepala-aksi { display: flex; gap: 8px; position: relative; z-index: 3; }
.tombol-bulat {
  width: 38px; height: 38px; border-radius: 12px;
  background: rgba(255, 255, 255, .16); border: 0; color: #fff;
  display: grid; place-items: center; position: relative;
  backdrop-filter: blur(4px);
}
.tombol-bulat:active { transform: scale(.94); }
.titik-merah {
  position: absolute; top: 7px; right: 7px; width: 8px; height: 8px;
  background: var(--emas); border-radius: 50%; border: 2px solid var(--utama-tua);
}

/* ---------- kartu utama ---------- */

.kartu-gantung { margin: -46px 16px 0; position: relative; z-index: 4; }
.kartu {
  background: var(--kartu);
  border-radius: var(--radius);
  box-shadow: var(--bayang);
  border: 1px solid var(--garis);
}
.kartu-isi { padding: 16px; }
.kartu-total .label { font-size: 12.5px; color: var(--teks-2); }
.kartu-total .angka { font-size: 27px; font-weight: 700; letter-spacing: -.02em; margin-top: 2px; }
.kartu-total .angka.lunas { color: var(--sukses); }
.kartu-kaki {
  border-top: 1px solid var(--garis);
  padding: 11px 16px;
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--teks-2);
}

/* ---------- pilih santri ---------- */

.pil-santri { display: flex; gap: 8px; overflow-x: auto; padding: 12px 16px 2px; scrollbar-width: none; }
.pil-santri::-webkit-scrollbar { display: none; }
.pil {
  flex: 0 0 auto; padding: 7px 13px; border-radius: 999px;
  background: var(--kartu); border: 1px solid var(--garis);
  font-size: 13px; color: var(--teks-2); white-space: nowrap;
}
.pil.aktif { background: var(--utama); border-color: var(--utama); color: #fff; font-weight: 600; }

/* ---------- grid menu ---------- */

.judul-bagian {
  display: flex; align-items: center; justify-content: space-between;
  margin: 22px 0 10px; font-size: 15px; font-weight: 650;
}
.judul-bagian a { font-size: 13px; font-weight: 500; }
.grid-menu { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.menu-item {
  background: var(--kartu); border: 1px solid var(--garis); border-radius: 14px;
  padding: 12px 6px 10px; text-align: center; position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  color: var(--teks); font-size: 11.5px; line-height: 1.25;
}
.menu-item:active { transform: scale(.96); }
.menu-ikon {
  width: 40px; height: 40px; border-radius: 13px;
  background: var(--utama-muda); color: var(--utama);
  display: grid; place-items: center;
}
.menu-lencana {
  position: absolute; top: 6px; right: 6px; min-width: 18px; height: 18px;
  padding: 0 5px; border-radius: 9px; background: var(--emas); color: #3d2a00;
  font-size: 10.5px; font-weight: 700; display: grid; place-items: center;
}

/* ---------- daftar ---------- */

.daftar { display: flex; flex-direction: column; gap: 10px; }
.baris {
  background: var(--kartu); border: 1px solid var(--garis); border-radius: 14px;
  padding: 13px 14px; display: flex; gap: 12px; align-items: flex-start;
}
.baris-utama { flex: 1; min-width: 0; }
.baris-judul { font-weight: 600; font-size: 14.5px; }
.baris-kecil { font-size: 12.5px; color: var(--teks-2); margin-top: 2px; }
.baris-nilai { text-align: right; font-weight: 700; white-space: nowrap; }

.lencana {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 999px;
  background: var(--kartu-2); color: var(--teks-2); border: 1px solid var(--garis);
}
.lencana.hijau { background: var(--sukses-muda); color: var(--sukses); border-color: transparent; }
.lencana.merah { background: var(--merah-muda); color: var(--merah); border-color: transparent; }
.lencana.emas { background: rgba(240, 180, 41, .16); color: #9a6b00; border-color: transparent; }
html[data-tema='gelap'] .lencana.emas { color: var(--emas); }

/* ---------- kotak centang tagihan ---------- */

.baris-pilih { cursor: pointer; }
.baris-pilih.terpilih { border-color: var(--utama); box-shadow: 0 0 0 2px rgba(21, 101, 192, .14); }
.centang {
  width: 22px; height: 22px; border-radius: 7px; border: 2px solid var(--garis);
  flex: 0 0 auto; display: grid; place-items: center; margin-top: 2px; color: transparent;
}
.baris-pilih.terpilih .centang { background: var(--utama); border-color: var(--utama); color: #fff; }

/* ---------- tombol ---------- */

.tombol {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 18px; border-radius: 13px; border: 0;
  background: var(--utama); color: #fff; font-weight: 650; font-size: 15px;
  width: 100%;
}
.tombol:active { transform: scale(.985); }
.tombol[disabled] { opacity: .5; pointer-events: none; }
.tombol.garis { background: transparent; color: var(--utama); border: 1.5px solid var(--utama); }
.tombol.sunyi { background: var(--kartu-2); color: var(--teks); border: 1px solid var(--garis); }
.tombol.bahaya { background: var(--merah); }
.tombol.kecil { padding: 8px 13px; font-size: 13.5px; width: auto; border-radius: 10px; }

.bilah-bayar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 45;
  padding: 12px 16px calc(12px + var(--bawah-aman));
  background: var(--kartu); border-top: 1px solid var(--garis);
  box-shadow: 0 -6px 24px rgba(0, 0, 0, .07);
  display: flex; align-items: center; gap: 12px;
  max-width: 560px; margin: 0 auto;
}
.bilah-bayar .kiri { flex: 1; min-width: 0; }
.bilah-bayar .kiri .kecil { font-size: 11.5px; color: var(--teks-2); }
.bilah-bayar .kiri .angka { font-size: 18px; font-weight: 700; }
.bilah-bayar .tombol { width: auto; padding: 12px 22px; }

/* Saat bilah bayar muncul, navigasi bawah disembunyikan supaya tidak bertumpuk. */
body.ada-bilah .nav-bawah { display: none; }

/* ---------- navigasi bawah ---------- */

.nav-bawah {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(12px + var(--bawah-aman)); z-index: 40;
  width: calc(100% - 32px); max-width: 460px;
  background: var(--kartu); border: 1px solid var(--garis);
  border-radius: 999px; box-shadow: var(--bayang-kuat);
  display: flex; padding: 6px;
}
.nav-bawah button {
  flex: 1; border: 0; background: transparent; color: var(--teks-3);
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 7px 0 5px; border-radius: 999px; font-size: 10.5px; font-weight: 600;
}
.nav-bawah button.aktif { color: var(--utama); background: var(--utama-muda); }

/* ---------- masuk ---------- */

.layar-masuk {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
  padding: 24px; max-width: 420px; margin: 0 auto; gap: 18px;
}
.logo-lingkar {
  width: 78px; height: 78px; border-radius: 24px; margin: 0 auto;
  background: var(--kartu); border: 1px solid var(--garis);
  display: grid; place-items: center; box-shadow: var(--bayang);
}
.judul-besar { font-size: 25px; text-align: center; }
.sub { text-align: center; color: var(--teks-2); font-size: 14px; }

label { display: block; font-size: 12.5px; font-weight: 600; color: var(--teks-2); margin: 0 0 5px; }
input, select, textarea {
  width: 100%; padding: 12px 13px; border-radius: 12px;
  border: 1.5px solid var(--garis); background: var(--kartu); color: var(--teks);
  font-size: 15px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--utama); }
.kolom { margin-bottom: 13px; }
.bantuan { font-size: 12px; color: var(--teks-3); margin-top: 5px; }

/* ---------- pemberitahuan ---------- */

.pesan {
  padding: 11px 13px; border-radius: 12px; font-size: 13.5px;
  background: var(--merah-muda); color: var(--merah); margin-bottom: 12px;
}
.pesan.ok { background: var(--sukses-muda); color: var(--sukses); }
.pesan.info { background: var(--kartu-2); color: var(--teks-2); border: 1px solid var(--garis); }

.kosong { text-align: center; padding: 40px 20px; color: var(--teks-3); }
.kosong .ikon-kosong { width: 56px; height: 56px; margin: 0 auto 12px; opacity: .5; }

/* ---------- petunjuk bayar ---------- */

.rekening {
  background: var(--kartu-2); border: 1px dashed var(--garis); border-radius: 12px;
  padding: 13px; display: flex; align-items: center; gap: 12px; margin-bottom: 10px;
}
.rekening .kiri { flex: 1; min-width: 0; }
.rekening .nilai { font-size: 17px; font-weight: 700; letter-spacing: .02em; }
.salin { border: 0; background: var(--utama-muda); color: var(--utama); border-radius: 10px; padding: 8px 11px; font-size: 12.5px; font-weight: 650; }

.langkah { counter-reset: n; padding: 0; margin: 12px 0 0; list-style: none; }
.langkah li {
  counter-increment: n; position: relative; padding-left: 30px;
  margin-bottom: 9px; font-size: 13.5px; color: var(--teks-2);
}
.langkah li::before {
  content: counter(n); position: absolute; left: 0; top: 1px;
  width: 21px; height: 21px; border-radius: 7px;
  background: var(--utama-muda); color: var(--utama);
  font-size: 11.5px; font-weight: 700; display: grid; place-items: center;
}

.hitung-mundur { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--emas); }

/* ---------- kwitansi ---------- */

.kwitansi { background: var(--kartu); border-radius: var(--radius); border: 1px solid var(--garis); overflow: hidden; }
.kwitansi-kepala { background: var(--utama-muda); padding: 18px; text-align: center; }
.kwitansi-cap {
  display: inline-block; border: 2px solid var(--sukses); color: var(--sukses);
  padding: 4px 14px; border-radius: 8px; font-weight: 800; letter-spacing: .08em;
  font-size: 13px; transform: rotate(-4deg); margin-top: 8px;
}
.kw-baris { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; font-size: 13.5px; }
.kw-baris .k { color: var(--teks-2); }
.kw-baris .v { font-weight: 600; text-align: right; }
.kw-garis { border-top: 1px dashed var(--garis); margin: 10px 0; }

/* ---------- muat ---------- */

.muat { display: grid; place-items: center; padding: 40px; }
.putar {
  width: 26px; height: 26px; border-radius: 50%;
  border: 3px solid var(--garis); border-top-color: var(--utama);
  animation: putar 700ms linear infinite;
}
@keyframes putar { to { transform: rotate(360deg); } }

.kerangka { background: var(--kartu-2); border-radius: 12px; height: 62px; margin-bottom: 10px; animation: denyut 1.4s ease-in-out infinite; }
@keyframes denyut { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }

/* ---------- lembar bawah ---------- */

.tirai {
  position: fixed; inset: 0; background: rgba(8, 14, 26, .55); z-index: 50;
  display: flex; align-items: flex-end; justify-content: center;
  animation: masukTirai .18s ease;
}
@keyframes masukTirai { from { opacity: 0; } to { opacity: 1; } }
.lembar {
  background: var(--kartu); width: 100%; max-width: 560px;
  border-radius: 22px 22px 0 0; padding: 8px 16px calc(20px + var(--bawah-aman));
  max-height: 88vh; overflow-y: auto; animation: naik .22s cubic-bezier(.2, .8, .3, 1);
}
@keyframes naik { from { transform: translateY(22px); } to { transform: translateY(0); } }
.pegangan { width: 40px; height: 4px; border-radius: 2px; background: var(--garis); margin: 6px auto 14px; }

.pilihan-metode {
  display: flex; gap: 12px; align-items: flex-start;
  border: 1.5px solid var(--garis); border-radius: 14px; padding: 13px; margin-bottom: 10px;
}
.pilihan-metode.aktif { border-color: var(--utama); background: var(--utama-muda); }
.pilihan-metode .nm { font-weight: 650; font-size: 14.5px; }
.pilihan-metode .kt { font-size: 12.5px; color: var(--teks-2); margin-top: 2px; }

/* ---------- lain-lain ---------- */

.pilih-tema { display: flex; gap: 8px; }
.pilih-tema button {
  flex: 1; padding: 9px; border-radius: 11px; border: 1.5px solid var(--garis);
  background: var(--kartu); color: var(--teks-2); font-size: 13px; font-weight: 600;
}
.pilih-tema button.aktif { border-color: var(--utama); color: var(--utama); background: var(--utama-muda); }

.sakelar { position: relative; width: 44px; height: 26px; flex: 0 0 auto; }
.sakelar input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; }
.sakelar .jalur { position: absolute; inset: 0; background: var(--garis); border-radius: 999px; transition: background .2s; }
.sakelar .bulat { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; transition: transform .2s; box-shadow: 0 1px 3px rgba(0, 0, 0, .3); }
.sakelar input:checked + .jalur { background: var(--utama); }
.sakelar input:checked + .jalur + .bulat { transform: translateX(18px); }

.info-baris { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--garis); }
.info-baris:last-child { border-bottom: 0; }
.info-baris .kiri { flex: 1; min-width: 0; }
.info-baris .nm { font-weight: 600; font-size: 14.5px; }
.info-baris .kt { font-size: 12.5px; color: var(--teks-2); }

.roti { display: flex; align-items: center; gap: 10px; padding: 14px 16px 4px; }
.roti button { background: transparent; border: 0; color: var(--teks); display: grid; place-items: center; padding: 4px; }
.roti h2 { font-size: 17px; }

.sorot {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(96px + var(--bawah-aman)); z-index: 60;
  background: var(--teks); color: var(--latar);
  padding: 10px 16px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  box-shadow: var(--bayang-kuat); animation: naik .2s ease;
  max-width: calc(100% - 40px);
}

@media print {
  .kepala, .nav-bawah, .bilah-bayar, .roti, .tombol { display: none !important; }
  body { background: #fff; }
  .halaman { padding: 0; }
}

@media (min-width: 620px) {
  .kepala { border-radius: 0 0 32px 32px; }
}