/* BELING — style.css   Token desain dari page-design.md §2. Default GELAP (konteks: sebelum tidur, tempat umum).
   Terang = [data-theme="light"] (mint), malam = [data-mode="night"] (hampir hitam). */

/* wordmark "Beling" yang bergerak (hue-shift + kilau + titik denyut).
   Dipisah ke berkasnya sendiri supaya mudah dibaca & dirawat. */
@import url('css/logo.css');

/* ---- font, self-host (bukan CDN: harus jalan offline untuk PWA) ---- */
@font-face {
  font-family: 'Atkinson';
  src: url('fonts/atkinson-var-latin.woff2') format('woff2-variations');
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
                 U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
                 U+2212, U+2215, U+FEFF, U+FFFD;
}
/* fallback metrik-disesuaikan -> tidak ada lompatan layout saat font datang (CLS) */
@font-face {
  font-family: 'Atkinson Fallback';
  src: local('Arial'), local('Helvetica'), local('Liberation Sans');
  size-adjust: 97%;
  ascent-override: 96%;
  descent-override: 24%;
  line-gap-override: 0%;
}

:root {
  /* netral */
  --bg: #0f1115;
  --surface: #171a21;
  --border: #262b36;
  --text: #e8eaee;
  --muted: #8b93a3;

  /* aksi */
  --accent: #4c8dff;
  --on-accent: #08111f;
  --accent-strong: #4c8dff;
  --accent-soft: rgba(76, 141, 255, .10);
  --accent-2: #7b5cff;   /* pasangan gradien (violet) — dekorasi saja, bukan teks */
  --accent-glow: rgba(123, 92, 255, .22);

  /* panel auth: 'ink' = paruh GELAP, 'paper' = paruh TERANG.
     Keduanya memakai kunci warna yang SAMA (bg, surface, border, text,
     muted, accent, accent-soft, accent-glow) supaya komposisi kiri↔kanan
     identik dan hanya warna yang dibalik. */
  --ink-bg: #0f1115;
  --ink-surface: #171a21;
  --ink-border: #262b36;
  --ink-text: #e8eaee;
  --ink-muted: #8b93a3;

  /* status (peta topic & umpan balik) */
  --locked: #3a4150;
  --new: #4c8dff;
  --learning: #f0b429;
  --mastered: #35c07a;
  --wrong: #ef5350;
  --ok-soft: rgba(53, 192, 122, .10);
  --no-soft: rgba(239, 83, 80, .10);

  /* tipe */
  --font: 'Atkinson', 'Atkinson Fallback', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --fs-big: 30px; --fs-title: 22px; --fs-body: 17px; --fs-explain: 15px; --fs-small: 13px;
  --lh-tight: 1.2; --lh: 1.45; --lh-title: 1.35;

  /* kotak */
  --radius: 14px;
  --gap: 16px;
  --touch: 44px;      /* target sentuh minimum */
  --btn-h: 56px;      /* tombol utama */
  --opt-h: 52px;      /* opsi jawaban */
  --hd-h: 48px;

  /* ---------- gerak (motion) ----------
     Kurva dari kosakata Material 3 / Apple HIG. Semua animasi WAJIB pakai
     token ini supaya ritmenya konsisten dan mudah dimatikan sekaligus. */
  --e-out: cubic-bezier(.2, .8, .2, 1);   /* masuk: cepat-keluar, berhenti lembut */
  --e-in:  cubic-bezier(.4, 0, 1, 1);     /* keluar: melambat lalu hilang */
  --e-std: cubic-bezier(.4, 0, .2, 1);    /* standar (sama dengan seg-thumb) */
  --e-spring: cubic-bezier(.34, 1.56, .64, 1); /* sedikit memantul — hanya untuk "hadiah" */
  --t-press: 90ms;                        /* umpan balik tekan (<=120ms: aturan shell-check) */
  --t-fast: 160ms;
  --t-enter: 240ms;                       /* satu kartu masuk */
  --t-feedback: 320ms;                    /* benar/salah */
  --t-screen: 200ms;                      /* ganti layar */
  --stagger: 40ms;                        /* jeda antar item dalam daftar */
}

/* mode malam: hampir hitam -> di OLED benar-benar mati, hemat baterai, cahaya minimum */
[data-mode="night"] {
  --bg: #07080a;
  --surface: #0d0f12;
  --border: #1a1d22;
  --text: #c9cdd4;   /* bukan #fff — jangan menyilaukan sebelum tidur */
    --muted: #838b99;  /* 5.1:1 di #07080a — sebelumnya #6b7280 hanya 4.14:1 */
  --accent: #3f76d6; /* diredupkan */
  --accent-strong: #3f76d6;
    --on-accent: #03060d; /* 5.0:1 di #3f76d6 — #060b14 hanya 4.48:1 (gagal) */
  --accent-soft: rgba(63, 118, 214, .12);
  --accent-2: #5b4bd0;   /* violet redup, senada mode malam */
  --accent-glow: rgba(91, 75, 208, .18);
  --ink-bg: #07080a;
  --ink-surface: #0d0f12;
  --ink-border: #1a1d22;
  --ink-text: #c9cdd4;
  --ink-muted: #838b99;
  --ok-soft: rgba(53, 192, 122, .09);
  --no-soft: rgba(239, 83, 80, .09);
}

/* tema terang: sentuhan hijau mint. Mint #3ddc97 TIDAK PERNAH jadi teks (2.5:1 di putih). */
[data-theme="light"] {
  --bg: #f6faf8;            /* hijau sangat pucat, bukan putih bersih */
  --surface: #ffffff;
  --border: #d7e8e0;
  --text: #14211c;          /* hitam kehijauan, bukan #000 */
  --muted: #5b6e67;         /* 5.4:1 — terbaca, tapi jelas bukan teks utama */
  --accent: #3ddc97;        /* ISI tombol saja */
  --accent-strong: #0a7d5e; /* mint sebagai TEKS/ikon/garis — 5.1:1 di putih */
  --accent-soft: #d9f6e9;
  --on-accent: #06231a;     /* 9.4:1 di --accent, 14.5:1 di --accent-soft */
  --accent-2: #12b981;      /* teal, pasangan mint */
  --accent-glow: rgba(18, 185, 129, .20);
  --ink-bg: #f6faf8;        /* tema terang: paruh "gelap" = mint pucat */
  --ink-surface: #ffffff;
  --ink-border: #d7e8e0;
  --ink-text: #14211c;
  --ink-muted: #5b6e67;
  --locked: #a8b5b0;
  --new: #0a7d5e;
  --learning: #b45309;
  --mastered: #15803d;
  --wrong: #b91c1c;
  --ok-soft: #d9f6e9;
  --no-soft: #fdeaea;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: var(--lh);
  /* ss03 = kutip bulat (don't, isn't) supaya kata tidak terlihat terpotong */
  font-feature-settings: "liga" 1, "calt" 1, "ss03" 1;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

/* angka rata lebar -> kolom skor/persen tidak goyang */
.tabular, .score, .bar, .rows, .hist, .stat b { font-variant-numeric: tabular-nums; }

/* Pembantu aksesibilitas pembaca layar (screen reader) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Host (#app) cuma wadah; layout sebenarnya ada di dalam .screen.
   Tanpa ini, .screen di dalam #app jadi dobel (padding & max-width bertumpuk). */
#app { display: block; width: 100%; }

/* ---------- zona layar (konsisten semua layar) ---------- */
.screen {
  min-height: 100svh;          /* svh = ukuran terkecil, tidak berubah saat address bar sembunyi */
  width: 100%;
  max-width: 480px;            /* HP: satu kolom sempit */
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top))
           16px
           max(12px, env(safe-area-inset-bottom))
           16px;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* ---------- TABLET & DESKTOP (>=600px) ----------
   App ini dirancang untuk HP. Di layar lebar, tanpa aturan ini kolom 480px
   menempel di kiri-atas, sisanya kosong -> terlihat "jelek / tidak responsif".
   Solusi: pusatkan kolom secara horizontal & vertikal, batasi tingginya ke
   viewport, dan beri bingkai kartu supaya terlihat disengaja. */
@media (min-width: 600px) {
  body {
    display: flex;
    align-items: center;              /* pusat vertikal */
    justify-content: center;          /* pusat horizontal */
    min-height: 100svh;
    padding: 24px;
    background:
      radial-gradient(1100px 520px at 50% -8%, var(--surface), transparent 68%),
      var(--bg);
  }
  #app { width: 100%; }
  .screen {
    min-height: 0;
    width: 100%;
    max-width: 460px;
    height: min(760px, calc(100svh - 48px));
    padding: 22px 22px max(16px, env(safe-area-inset-bottom));
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, .38);
    overflow: hidden;
  }
}

/* layar sangat lebar: kolom tetap proporsional, jangan ikut melebar */
@media (min-width: 1280px) {
  .screen { max-width: 460px; }
}

/* layar pendek / landscape HP: jangan paksa tinggi kartu */
@media (min-width: 600px) and (max-height: 560px) {
  .screen { height: auto; min-height: 0; }
}

.hd {
  height: var(--hd-h);
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: var(--fs-small);
  color: var(--muted);
}
.hd b { color: var(--text); font-weight: 600; }
.hd .grow { flex: 1 1 auto; min-width: 0; }

.body { flex: 1 1 auto; display: flex; flex-direction: column; min-height: 0; }
.center { flex: 1 1 auto; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.act { flex: 0 0 auto; display: flex; flex-direction: column; gap: 10px; padding-top: 12px; }

/* ---------- tombol ---------- */
.btn {
  min-height: var(--btn-h);
  width: 100%;
  border: 0;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: var(--fs-body);
  font-weight: 600;
  cursor: pointer;
  touch-action: manipulation;      /* buang delay 300ms + anti double-tap zoom */
  transition: transform .06s;
}
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .45; cursor: default; }
.btn:disabled:active { transform: none; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  font-weight: 500;
}
.btn-danger { background: transparent; color: var(--wrong); border: 1px solid var(--border); font-weight: 500; }

/* loading: jangan biarkan ditekan dua kali */
.btn[aria-busy="true"] { opacity: .7; pointer-events: none; }

/* ---------- chip (durasi, filter) ---------- */
.chips { display: flex; gap: 12px; flex-wrap: wrap; }  /* 12px: jangan biarkan jempol salah pencet */
.chip {
  min-height: var(--touch);   /* 44px — bukan 36px: aturan target sentuh berlaku untuk SEMUA kontrol */
  min-width: var(--touch);    /* chip pendek ("5", "15") tetap selebar 44px */
  display: inline-flex; align-items: center; justify-content: center;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: var(--fs-small);
  cursor: pointer;
  touch-action: manipulation;
}
.chip[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.chip:active { transform: scale(.97); }
[data-theme="light"] .chip[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent-strong);
  color: var(--on-accent);
}

/* ---------- teks ---------- */
.lbl { font-size: var(--fs-small); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.big { font-size: var(--fs-big); font-weight: 600; line-height: var(--lh-tight); letter-spacing: -.01em; }
.title { font-size: var(--fs-title); font-weight: 600; line-height: var(--lh-title); }
.ctx { font-size: var(--fs-body); color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: var(--fs-small); }
.explain { font-size: var(--fs-explain); color: var(--muted); }
.link {
  background: none; border: 0; padding: 0;
  font-family: inherit; font-size: var(--fs-explain);
  color: var(--accent-strong);
  min-height: var(--touch);
  min-width: var(--touch);
  justify-content: center;
  display: inline-flex; align-items: center;
  cursor: pointer; touch-action: manipulation;
}
[data-theme="light"] .link { color: var(--accent-strong); }

/* ---------- form ---------- */
.field {
  width: 100%;
  min-height: var(--btn-h);
  padding: 0 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 16px;   /* < 16px -> iOS auto-zoom saat fokus, dan tidak mau kembali */
  appearance: none;
  -webkit-appearance: none;
}
.field:focus { outline: none; border-color: var(--accent); }
.field:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.field::placeholder { color: var(--muted); }
select.field { background-image: none; }
/* Safari/Firefox kadang mengganti latar input bawaan -> paksa seragam */
.field:-webkit-autofill { -webkit-text-fill-color: var(--text); box-shadow: 0 0 0 40px var(--surface) inset; }

label.fld { display: flex; flex-direction: column; gap: 6px; font-size: var(--fs-small); color: var(--muted); }

/* ---------- feedback ---------- */
.msg { font-size: var(--fs-explain); min-height: 20px; }
.msg.err { color: var(--wrong); }
.msg.ok { color: var(--mastered); }

/* ---------- daftar opsi jawaban ---------- */
.opts { display: flex; flex-direction: column; gap: 12px; }
.opt {
  min-height: var(--opt-h);
  display: flex; align-items: center;
  padding: 0 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: var(--fs-body);
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
}
.opt:active { transform: scale(.99); }
.opt[data-state="ok"] { border-color: var(--mastered); background: var(--ok-soft); }
.opt[data-state="no"] { border-color: var(--wrong); background: var(--no-soft); }
.opt[data-state="fade"] { opacity: .45; }

/* ---------- progres chunk = titik, bukan "7/25" ---------- */
.dots { display: flex; gap: 7px; align-items: center; }
.dots s {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--locked); display: block; text-decoration: none;
}
.dots s[data-on] { background: var(--accent); }
.dots em { font-style: normal; margin-left: 6px; color: var(--muted); font-size: var(--fs-small); }

/* ---------- kartu aturan ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.ex { display: flex; flex-direction: column; gap: 10px; }
.ex span { font-size: var(--fs-explain); padding-left: 12px; border-left: 2px solid var(--accent); }

/* ---------- progress: bar, baris, heatmap ---------- */
.bar { height: 7px; background: var(--border); border-radius: 6px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: 6px; }
.rows { display: flex; flex-direction: column; gap: 9px; }
.row { display: flex; justify-content: space-between; gap: 12px; font-size: var(--fs-explain); color: var(--muted); }
.row b { color: var(--text); font-weight: 600; }

/* ---------- status node: bentuk + warna (aman buta warna) ---------- */
.dot { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; }
.dot[data-s="locked"]   { background: var(--locked); }
.dot[data-s="new"]      { background: transparent; border: 2px solid var(--new); }
.dot[data-s="learning"] { background: var(--learning); }
.dot[data-s="mastered"] { background: var(--mastered); }

/* ================================================================
   GERAK & ANIMASI
   Semua di bawah ini: transform/opacity saja (GPU), durasi pendek,
   dan MATI otomatis di mode malam + prefers-reduced-motion.
   Aturan proyek: tidak ada :hover, umpan balik lewat :active.
   ================================================================ */

/* ---------- 1. masuknya sebuah layar (fallback tanpa View Transitions) ---------- */
/* Dipakai hanya saat browser tak mendukung startViewTransition (kelas .vt
   dipasang di <html> oleh app.js). Arah maju/mundur dibedakan data-nav. */
@keyframes screen-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}
@keyframes screen-in-fwd  { from { opacity: 0; transform: translateX(6%); } }
@keyframes screen-in-back { from { opacity: 0; transform: translateX(-6%); } }

html:not(.vt) .screen { animation: screen-in var(--t-screen) var(--e-out) both; }
html:not(.vt)[data-nav="forward"] .screen { animation-name: screen-in-fwd; }
html:not(.vt)[data-nav="back"]    .screen { animation-name: screen-in-back; }

/* ---------- 2. View Transitions (browser modern) ---------- */
::view-transition-old(root) { animation: vt-old var(--t-screen) var(--e-out) both; }
::view-transition-new(root) { animation: vt-new var(--t-screen) var(--e-out) both; }
@keyframes vt-old { to   { opacity: 0; transform: translateY(-6px); } }
@keyframes vt-new { from { opacity: 0; transform: translateY(6px); } }

[data-nav="forward"]::view-transition-old(root) { animation-name: vt-old-fwd; }
[data-nav="forward"]::view-transition-new(root) { animation-name: vt-new-fwd; }
[data-nav="back"]::view-transition-old(root)    { animation-name: vt-old-back; }
[data-nav="back"]::view-transition-new(root)    { animation-name: vt-new-back; }
@keyframes vt-old-fwd  { to   { opacity: 0; transform: translateX(-5%); } }
@keyframes vt-new-fwd  { from { opacity: 0; transform: translateX(5%); } }
@keyframes vt-old-back { to   { opacity: 0; transform: translateX(5%); } }
@keyframes vt-new-back { from { opacity: 0; transform: translateX(-5%); } }

/* ---------- 3. tombol: umpan balik tekan (unifikasi kurva) ---------- */
.btn, .opt, .chip, .seg-btn, .link { transition: transform var(--t-press) var(--e-out); }
.btn-primary:not(:disabled):active { transform: translateY(1px) scale(.99); }

/* ---------- 4. entrance berjenjang untuk daftar ---------- */
/* JS cukup pasang --i (indeks) per anak; tanpa JS pun jalan via nth-child. */
@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.opts > .opt,
.chips > .chip,
.rows > .row,
.auth-points > li { animation: rise var(--t-enter) var(--e-out) both; animation-delay: calc(var(--i, 0) * var(--stagger)); }

.opts > .opt:nth-child(1), .chips > .chip:nth-child(1), .rows > .row:nth-child(1) { --i: 0; }
.opts > .opt:nth-child(2), .chips > .chip:nth-child(2), .rows > .row:nth-child(2) { --i: 1; }
.opts > .opt:nth-child(3), .chips > .chip:nth-child(3), .rows > .row:nth-child(3) { --i: 2; }
.opts > .opt:nth-child(4), .chips > .chip:nth-child(4), .rows > .row:nth-child(4) { --i: 3; }
.opts > .opt:nth-child(5), .chips > .chip:nth-child(5), .rows > .row:nth-child(5) { --i: 4; }
.opts > .opt:nth-child(n+6), .chips > .chip:nth-child(n+6), .rows > .row:nth-child(n+6) { --i: 5; }

/* ---------- 5. jawaban quiz: benar "mengendap", salah "bergoyang" ---------- */
@keyframes opt-ok {
  0% { transform: scale(1); } 40% { transform: scale(1.02); } 100% { transform: scale(1); }
}
@keyframes opt-no {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); } 40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); } 80% { transform: translateX(3px); }
}
.opt[data-state="ok"] { animation: opt-ok var(--t-feedback) var(--e-out); }
.opt[data-state="no"] { animation: opt-no 360ms var(--e-std); }
/* kartu umpan balik ikut muncul */
.card[data-pop] { animation: pop-in 260ms var(--e-spring) both; }
@keyframes pop-in { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: none; } }

/* ---------- 6. peta jalan (S8): node muncul berjenjang ---------- */
@keyframes dot-in { from { opacity: 0; transform: scale(.3); } to { opacity: 1; transform: none; } }
.dot { animation: dot-in var(--t-enter) var(--e-spring) both; animation-delay: calc(var(--i, 0) * var(--stagger)); }

/* ---------- 7. bar progres: lebar dari 0 (kelas .fill oleh JS) ---------- */
.bar i { transition: width 560ms var(--e-out); }

/* ---------- 8. denyut lembut pada lencana streak ---------- */
@keyframes beat {
  0%, 100% { transform: scale(1); } 50% { transform: scale(1.06); }
}

/* ---------- 9. kilau halus pada CTA utama (dua kali lalu berhenti) ---------- */
@keyframes glow-once {
  0%   { box-shadow: 0 0 0 0 var(--accent-glow); }
  70%  { box-shadow: 0 0 0 12px rgba(0, 0, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 0, 0, 0); }
}

/* ---------- 10. aurora: latar "cahaya" yang mengalir sangat lambat ---------- */
/* Dipakai oleh .auth-brand::after (laptop) dan .screen-home::before.
   Hanya transform → murah di GPU. 26-40s: mustahil terasa mengganggu. */
@keyframes aurora-drift {
  0%   { transform: translate3d(-4%, -3%, 0) scale(1.05); }
  50%  { transform: translate3d(4%, 3%, 0) scale(1.12); }
  100% { transform: translate3d(-2%, 4%, 0) scale(1.08); }
}

/* ---------- 11. latar ambiance Home: aurora lembut di balik kartu ---------- */
.screen-home { position: relative; }
.screen-home::before {
  content: '';
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 70%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(42% 40% at 25% 30%, var(--accent-glow), transparent 70%),
    radial-gradient(36% 36% at 78% 20%, color-mix(in srgb, var(--accent-2) 42%, transparent), transparent 70%);
  opacity: .34;
  filter: blur(10px);
  animation: aurora-drift 34s var(--e-std) infinite alternate;
}
.screen-home > * { position: relative; z-index: 1; }

/* ---------- 12. ENTRANCE panel branding kiri (laptop) ---------- */
/* Panel "menyusun diri" saat dimuat: logo → huruf → judul → teks.
   Jarak tempuh sengaja kecil (5–10px) supaya terasa "matang", bukan "wah". */
@keyframes assemble {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
@keyframes tile-in {
  from {
    opacity: 0;
    transform: translateY(calc(var(--d) * -4px + 10px))
               rotate(var(--rot, 0deg)) scale(calc(var(--sc) * .86));
  }
  to {
    opacity: calc(.30 + var(--d) * .70);
    transform: translateY(calc(var(--d) * -4px))
               rotate(var(--rot, 0deg)) scale(var(--sc));
  }
}

/* ---------- 13. napas lembut titik fitur (dipakai .auth-points li::before) ---------- */
@keyframes dot-breathe {
  0%, 100% { transform: scale(1);    opacity: 1; }
  50%      { transform: scale(1.14); opacity: .82; }
}

/* ---------- 14. grid latar panel auth yang mengalir sangat lambat ---------- */
/* Dipakai oleh ::before di .auth-brand & .auth-main (laptop). 60s/putaran:
   nyaris tak terlihat bergerak, tapi panel tidak pernah terasa "beku". */
@keyframes grid-flow {
  from { background-position: 0 0, 0 0, 0 0; }
  to   { background-position: 0 0, 0 30px, 30px 0; }
}

/* ---------- 15. kilau menyapu tepi kartu (kiri & kanan) ---------- */
/* Bayangan diagonal tipis berjalan sepanjang border (mask "exclude").
   Sebagian besar siklus idle (opacity 0) lalu menyapu sekali. */
@keyframes sheen {
  0%, 64% { opacity: 0; background-position: 200% 0; }
  72%     { opacity: .85; }
  100%    { opacity: 0; background-position: -40% 0; }
}

/* ---------- utilitas ---------- */
.hide { display: none !important; }
.spacer { flex: 1 1 auto; }
[hidden] { display: none !important; }

/* ---------- hormati prefers-reduced-motion (dipakai juga di mode malam) ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  /* PENTING: keyframe "rise/pop/dot-in/assemble/tile-in" mulai dari opacity:0.
     Kalau animasi dibatalkan, elemen harus tetap MUNCUK — bukan tidak terlihat. */
  .opts > .opt, .chips > .chip, .rows > .row, .auth-points > li,
  .card[data-pop], .dot,
  .auth-brand-top, .auth-hero, .auth-tile, .auth-groups,
  .auth-title, .auth-tag, .auth-eyebrow, .auth-brand-foot {
    opacity: 1 !important; transform: none !important;
  }
  /* wordmark bergerak: saat animasi dimatikan, pastikan tetap TERBACA.
     Lapisan gradien ::before dibuat penuh & opak, kilau ::after dibuang. */
  .auth-logo::before {
    opacity: 1 !important;
    animation: none !important;
  }
  .auth-logo::after { display: none !important; }
  .auth-logo .logo-dot { animation: none !important; }
  /* kartu form juga di-animasi (assemble) — pastikan tetap terlihat */
  .auth-main .auth-card { opacity: 1 !important; transform: none !important; }
  /* View Transitions juga dimatikan supaya tidak ada snapshot berkedip. */
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}
[data-mode="night"] *, [data-mode="night"] *::before, [data-mode="night"] *::after {
  transition: none !important; animation: none !important;
}
/* mode malam: matikan lapisan aurora Home + redupkan sorot panel kiri */
[data-mode="night"] .screen-home::before { display: none; }
[data-mode="night"] .auth-brand::after { opacity: .30; }
[data-mode="night"] .auth-main::after { opacity: .20; }
/* mode malam: matikan kilau wordmark (jangan menyilaukan sebelum tidur) */
[data-mode="night"] .auth-logo::after { display: none; }
[data-mode="night"] .auth-logo::before { opacity: .84; animation-duration: 60s; }
/* mode malam: pastikan panel kiri TETAP terlihat berlapis, bukan rata/mati */
[data-mode="night"] .auth-tile {
  opacity: .82; background: color-mix(in srgb, var(--surface) 92%, transparent);
}

/* kontrlogo::before, .auth-logo::after { display: none !important; }
  .auth-logo, .auth-logo .logo-dot { color: CanvasText !important; background: none !important; }
  .auth-as tinggi paksa: buang gradien teks & lapisan dekoratif */
@media (forced-colors: active) {
  .auth-title { background: none !important; color: CanvasText !important; -webkit-text-fill-color: currentColor !important; }
  .auth-brand::before, .auth-brand::after, .auth-main::before, .auth-main::after,
  .auth-brand .auth-hero::after, .auth-main .auth-card::after,
  .screen-home::before { display: none !important; }
  .auth-brand, .auth-main { background: Canvas !important; }
  .auth-hero { border: 1px solid CanvasText; background: Canvas; }
  .auth-hero::before, .auth-hero::after { display: none !important; }
  .auth-points li::before { background: Highlight !important; }
  .auth-points { border-left-color: CanvasText; }
  .auth-main .auth-card { border: 1px solid CanvasText; background: Canvas; }
  .auth-proof-item, .auth-brand-foot { border: 1px solid CanvasText; }
}

/* Tidak ada :hover di mana pun — di layar sentuh dia "nyangkut" terlihat terpilih. */

/* ================================================================
   LAYAR AUTH (S0) — Masuk | Daftar (REDESAIN LENGKAP DENGAN MOTION GRAPHIC)
   MOBILE: satu kolom fleksibel — motion graphic Beling di atas, form card di bawah.
   LAPTOP (>=900px): split-screen panggung ganda — kiri brand motion showcase, kanan form portal.
   ================================================================ */

/* ---------- MOBILE (default): satu kolom ---------- */
.screen-auth {
  gap: 14px;
  justify-content: flex-start;
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
}

/* grup branding & form */
.auth-brand,
.auth-main {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* proof pills: tampil di mobile & desktop */
.auth-proof {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 4px 0;
}
.auth-proof-item {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  border: 1px solid var(--border);
}

/* daftar poin fitur di mobile disembunyikan agar layar tidak kepanjangan */
.auth-points { display: none; list-style: none; }

/* pembungkus head+points */
.auth-groups {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-brand-foot { display: none; }

/* ---------- JUDUL (mobile) ---------- */
.auth-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
  padding: 0 4px;
}
.auth-eyebrow {
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-strong);
  animation: assemble var(--t-enter) var(--e-out) 40ms both;
}
.auth-title {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--text);
  animation: assemble var(--t-enter) var(--e-out) 90ms both;
}
.auth-tag {
  font-size: var(--fs-explain);
  color: var(--muted);
  max-width: 34ch;
  margin: 0 auto;
  line-height: 1.45;
  animation: assemble var(--t-enter) var(--e-out) 140ms both;
}

/* ---------- KARTU FORM (Glassmorphism Modern) ---------- */
.auth-card {
  position: relative;
  z-index: 2;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, .28), 0 0 0 1px color-mix(in srgb, #fff 4%, transparent) inset;
  animation: assemble var(--t-enter) var(--e-out) 180ms both;
}

/* ---------- segmented control pil (Masuk | Daftar) ---------- */
.seg {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.seg-thumb {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(50% - 6px);
  height: calc(100% - 8px);
  border-radius: 999px;
  background: linear-gradient(150deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 12px var(--accent-glow);
  transition: transform .22s cubic-bezier(.4, 0, .2, 1);
}
.seg-thumb[data-at="daftar"] { transform: translateX(calc(100% + 4px)); }
.seg-btn {
  position: relative;
  z-index: 1;
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: var(--fs-explain);
  font-weight: 600;
  cursor: pointer;
  touch-action: manipulation;
  transition: color .18s;
}
.seg-btn[aria-selected="true"] { color: var(--on-accent); font-weight: 700; }
.seg-btn:active { transform: scale(.985); }

/* ---------- form + field ---------- */
.auth-form { display: flex; flex-direction: column; gap: 13px; }
.fld { display: flex; flex-direction: column; gap: 6px; }
.fld-lbl {
  font-size: var(--fs-small);
  color: var(--muted);
  font-weight: 600;
  letter-spacing: .02em;
  padding-left: 2px;
}
.fld-box { position: relative; display: block; }
.fld-box .field {
  padding-right: 52px;
  background: var(--bg);
  min-height: 52px;
  border-radius: 14px;
  border: 1px solid var(--border);
  transition: border-color .18s, box-shadow .18s;
}
.fld-box .field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.fld-eye {
  position: absolute;
  top: 0; right: 0;
  width: 48px; height: 100%;
  display: grid; place-items: center;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 17px;
  cursor: pointer;
  opacity: .72;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.fld-eye[aria-pressed="true"] { opacity: 1; color: var(--accent-strong); }
.fld-eye:active { transform: scale(.92); }

/* ---------- kaki form & area aksi ---------- */
.auth-foot { display: flex; justify-content: center; min-height: 36px; align-items: center; }
.auth-act { display: flex; flex-direction: column; gap: 10px; width: 100%; margin-top: 4px; }

/* CTA: gradasi modern */
.auth-cta.btn-primary {
  width: 100%;
  min-height: 54px;
  background: linear-gradient(150deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 26px var(--accent-glow), 0 3px 0 rgba(255, 255, 255, .16) inset;
  letter-spacing: .05em;
  font-weight: 700;
  border-radius: 14px;
  transition: transform .14s var(--e-out), box-shadow .14s, opacity .14s, filter .14s;
}
.auth-cta:not(:disabled):active { transform: translateY(1px) scale(.99); }
.auth-cta:disabled {
  box-shadow: none;
  cursor: not-allowed;
  opacity: .42;
}
.auth-cta.attn:not(:disabled) { animation: glow-once 1200ms var(--e-out) 700ms 2; }

/* judul ber-gradien */
.auth-title {
  background: linear-gradient(100deg, var(--text) 20%, var(--accent) 80%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
[data-theme="light"] .auth-title {
  background: linear-gradient(100deg, var(--text) 20%, var(--accent-strong) 80%);
  -webkit-background-clip: text; background-clip: text;
}
[data-mode="night"] .auth-title {
  background: none; color: var(--text); -webkit-text-fill-color: currentColor;
}
/* lencana streak di Home berdenyut lembut — hanya saat angkanya > 0 (JS) */
.hd .beat { animation: beat 3s var(--e-std) infinite; transform-origin: center; }

/* ================================================================
   LAPTOP / DESKTOP (>=900px): SPLIT-SCREEN dua kolom yang SEIMBANG.

   Komposisi: kolom 1:1, kedua paruh adalah KARTU KACA dengan bentuk,
   padding, dan tata letak IDENTIK. Bedanya hanya warna (paruh kiri
   "ink" gelap, paruh kanan "paper" terang) — jadi kiri & kanan terasa
   cermin, bukan dua desain berbeda.

   Gerak (semua lewat token, semua dimatikan oleh reduced-motion /
   mode malam):
     · hover 3D  — kartu sedikit miring mengikuti kursor (:has)
     · parallax  — lapisan dekoratif bergeser mengikuti kursor
     · drift     — grid + glow mengalir sangat lambat (40-60s)
     · sheen     — kilau menyapu tepi kartu kiri
     · assemble  — isi menyusun diri berjenjang saat masuk
   ================================================================ */
@media (min-width: 900px) {
  /* body: lepas padding & centering supaya auth bisa full-bleed */
  body:has(.screen-auth) {
    padding: 0;
    align-items: stretch;
  }
  body:has(.screen-auth) #app { width: 100%; }

  .screen-auth {
    width: 100%;
    max-width: none;              /* lepas batas 480px */
    height: 100svh;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    display: grid;
    /* 1 : 1 -> dua paruh sungguh-sungguh sama besar (komposisi seimbang) */
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
    gap: 0;
    padding: 0;
    overflow: hidden;
  }

  /* --- KEDUA PARUH: panggung kaca yang sama ---
     KIRI memakai keluarga warna "ink" (gelap), KANAN "paper" (terang).
     Semua turunan diturunkan dari keluarga itu + token aksen global —
     hanya warna yang berbeda, bentuk & tata letak 100% sama. */
  .auth-brand,
  .auth-main {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: clamp(36px, 5vw, 76px);
    overflow: hidden;
    max-width: none;
    margin: 0;
    isolation: isolate;
  }
  .auth-brand {
    --panel-bg: var(--ink-bg);
    --panel-surface: var(--ink-surface);
    --panel-border: var(--ink-border);
    --panel-text: var(--ink-text);
    --panel-muted: var(--ink-muted);
    flex-direction: column;
    justify-content: center;
    background:
      radial-gradient(46% 54% at 50% 47%,
        color-mix(in srgb, var(--accent) 26%, transparent), transparent 72%),
      radial-gradient(94% 80% at 82% 104%,
        color-mix(in srgb, var(--accent-2) 13%, transparent), transparent 74%),
      linear-gradient(152deg,
        color-mix(in srgb, var(--accent) 9%, var(--panel-bg)), var(--panel-bg) 66%);
  }
  .auth-main {
    --panel-bg: var(--bg);
    --panel-surface: var(--surface);
    --panel-border: var(--border);
    --panel-text: var(--text);
    --panel-muted: var(--muted);
    background:
      radial-gradient(46% 54% at 50% 47%,
        color-mix(in srgb, var(--accent) 15%, transparent), transparent 72%),
      radial-gradient(92% 76% at 6% 98%,
        color-mix(in srgb, var(--accent-2) 11%, transparent), transparent 74%),
      linear-gradient(336deg,
        color-mix(in srgb, var(--accent) 5%, var(--panel-bg)), var(--panel-bg) 66%);
  }

  /* --- LAPISAN GERAK (dekoratif, tidak menangkap klik) ---
     ::before = grid bergerak + vignette (paling atas)
     ::after  = aurora yang bernapas lambat (paling bawah) */
  .auth-brand::before,
  .auth-main::before {
    content: '';
    position: absolute;
    inset: -6%;
    z-index: 3;
    pointer-events: none;
    background:
      radial-gradient(92% 82% at 50% 46%, transparent 60%, rgba(0, 0, 0, .40)),
      repeating-linear-gradient(0deg,
        color-mix(in srgb, var(--panel-border) 34%, transparent) 0 1px, transparent 1px 30px),
      repeating-linear-gradient(90deg,
        color-mix(in srgb, var(--panel-border) 34%, transparent) 0 1px, transparent 1px 30px);
    opacity: .20;
    animation: grid-flow 60s linear infinite;
  }
  .auth-brand::after,
  .auth-main::after {
    content: '';
    position: absolute;
    inset: -12%;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(40% 38% at 50% 46%,
      color-mix(in srgb, var(--accent) 30%, transparent), transparent 68%);
    opacity: .62;
    filter: blur(14px);
    animation: aurora-drift 46s var(--e-std) infinite alternate;
  }
  .auth-main::after { opacity: .38; }

  /* sheen: kilau menyapu tepi dalam tiap kartu (kiri & kanan) */
  .auth-brand .beling-motion-stage::after,
  .auth-main .auth-card::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 4;
    pointer-events: none;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(120deg,
      transparent 38%, color-mix(in srgb, #fff 42%, transparent) 50%, transparent 62%);
    background-size: 280% 280%;
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    opacity: 0;
    animation: sheen 6.5s var(--e-std) 1.1s infinite;
  }
  [data-theme="light"] .auth-brand .beling-motion-stage::after,
  [data-theme="light"] .auth-main .auth-card::after {
    background: linear-gradient(120deg,
      transparent 40%, color-mix(in srgb, var(--accent-strong) 50%, transparent) 50%, transparent 60%);
    background-size: 280% 280%;
  }

  /* hover 3D + parallax (desktop ber-kursor): kedua kartu miring seirama */
  @media (hover: hover) and (pointer: fine) {
    .screen-auth:has(.beling-motion-stage:hover) .auth-brand {
      transform: perspective(1600px) rotateY(1.7deg) rotateX(-.8deg);
    }
    .screen-auth:has(.beling-motion-stage:hover) .auth-main {
      transform: perspective(1600px) rotateY(-1.7deg) rotateX(.8deg);
    }
    .screen-auth:has(.beling-motion-stage:hover) .auth-main .auth-card {
      transform: translateX(6px);
    }
  }
  .auth-brand,
  .auth-main,
  .auth-main .auth-card {
    transition: transform 520ms var(--e-out), box-shadow 520ms var(--e-out);
  }

  /* lapisan dekoratif tidak pernah menangkap klik; teks di atas? di z-index:2 */
  .auth-brand-foot { position: relative; z-index: 2; }

  /* --- KIRI: pesan merek & stage motion graphic --- */
  .auth-brand .beling-motion-stage {
    padding: 0 0 16px;
    margin: 0;
    max-width: 520px;
    align-items: flex-start;
  }
  .auth-brand .motion-glow {
    left: 30%;
  }
  .auth-brand .motion-wordmark {
    font-size: clamp(52px, 5vw, 70px);
  }
  .auth-brand .motion-caption {
    align-self: flex-start;
  }
  .auth-groups {
    display: flex; flex-direction: column;
    gap: 20px;
    width: 100%;
    max-width: 520px;
    align-self: center;
    justify-content: center;
    padding: 0;
    margin: 0;
    z-index: 2;
    animation: assemble var(--t-enter) var(--e-out) 240ms both;
  }
  .auth-head {
    display: flex; flex-direction: column;
    text-align: left;
    padding: 0;
    gap: 12px;
    max-width: none;
  }
  .auth-eyebrow {
    display: flex; align-items: center; gap: 12px;
    margin: 0;
    font-size: var(--fs-small); font-weight: 700;
    letter-spacing: .22em; text-transform: uppercase;
    color: color-mix(in srgb, var(--panel-muted) 78%, var(--panel-text));
  }
  .auth-eyebrow::after {
    content: ''; flex: 0 0 40px; height: 1px;
    background: color-mix(in srgb, var(--accent) 55%, var(--panel-border));
  }
  .auth-title {
    font-size: clamp(34px, 3.5vw, 54px);
    line-height: 1.02;
    letter-spacing: -.035em;
    font-weight: 800;
    text-wrap: balance;
  }
  .auth-tag {
    font-size: var(--fs-body);
    line-height: 1.5;
    margin: 0;
    max-width: 36ch;
    text-wrap: pretty;
    color: color-mix(in srgb, var(--panel-muted) 82%, var(--panel-text));
  }
  .auth-proof {
    justify-content: flex-start;
    margin: 4px 0 8px;
  }
  .auth-points {
    display: flex; flex-direction: column;
    gap: 13px;
    margin-top: 6px;
    padding-left: 20px;
    border-left: 1px solid var(--panel-border);
  }
  .auth-points li {
    position: relative;
    padding-left: 28px;
    font-size: var(--fs-explain);
    line-height: 1.45;
    color: var(--panel-muted);
    transition: color .4s ease, transform .4s ease;
    animation: point-stagger-glow 6s cubic-bezier(.4, 0, .2, 1) infinite;
    animation-delay: calc(var(--i, 0) * 2s);
  }
  /* Ikon centang animasi */
  .auth-points li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: .15em;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 11px;
    font-weight: 800;
    line-height: 1;
    color: var(--on-accent);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 2px 8px var(--accent-glow);
    transition: transform .4s cubic-bezier(.34, 1.56, .64, 1), box-shadow .4s ease;
    animation: check-pop 6s cubic-bezier(.34, 1.56, .64, 1) infinite;
    animation-delay: calc(var(--i, 0) * 2s);
  }
  .auth-points li::after { content: none; }

  @keyframes point-stagger-glow {
    0%, 15% {
      color: var(--text);
      font-weight: 600;
      transform: translateX(4px);
    }
    30%, 100% {
      color: var(--panel-muted);
      font-weight: 400;
      transform: translateX(0);
    }
  }

  @keyframes check-pop {
    0%, 15% {
      transform: scale(1.22);
      box-shadow: 0 0 14px var(--accent), 0 0 0 3px var(--accent-soft);
    }
    30%, 100% {
      transform: scale(1);
      box-shadow: 0 2px 8px var(--accent-glow);
    }
  }

  /* ANCHOR BAWAH: satu baris kecil + hairline -> menyeimbangkan komposisi */
  .auth-brand-foot {
    position: absolute;
    left: clamp(36px, 5vw, 76px); right: clamp(36px, 5vw, 76px); bottom: 36px;
    display: block;
    margin: 0;
    padding: 0;
    font-size: var(--fs-small);
    color: var(--panel-muted);
    letter-spacing: .005em;
    max-width: 46ch;
    text-wrap: pretty;
    animation: assemble var(--t-enter) var(--e-out) 460ms both;
  }
  .auth-brand-foot::before {
    content: '';
    display: block;
    width: 48px; height: 1px;
    margin-bottom: 14px;
    background: var(--panel-border);
  }

  /* --- KANAN: form di dalam kartu dengan bentuk & padding yang sama --- */
  .auth-main .auth-card {
    width: 100%;
    max-width: 520px;
    position: relative;
    padding: clamp(24px, 3vw, 40px);
    gap: 16px;
    border-radius: 26px;
    border-color: var(--panel-border);
    background: linear-gradient(152deg,
      color-mix(in srgb, var(--panel-surface) 97%, var(--accent)),
      color-mix(in srgb, var(--panel-surface) 72%, transparent));
    box-shadow:
      0 0 0 1px color-mix(in srgb, #fff 5%, transparent) inset,
      0 4px 10px -4px rgba(0, 0, 0, .42),
      0 20px 42px -18px rgba(0, 0, 0, .52),
      0 46px 92px -44px var(--accent-glow);
    animation: assemble var(--t-enter) var(--e-out) 340ms both;
  }
  [data-theme="light"] .auth-main .auth-card {
    background: linear-gradient(152deg,
      color-mix(in srgb, #fff 96%, var(--accent)),
      color-mix(in srgb, #fff 78%, transparent));
  }
  @supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .auth-main .auth-card {
      backdrop-filter: blur(16px) saturate(120%);
      -webkit-backdrop-filter: blur(16px) saturate(120%);
    }
  }
  .fld-box .field { min-height: 54px; }
  .auth-foot { justify-content: center; }
  .auth-cta.btn-primary { min-height: 54px; font-size: 15px; }
}

/* layar sangat lebar: jaga proporsi, jangan melar */
@media (min-width: 1440px) {
  .auth-groups { max-width: 560px; }
  .auth-main .auth-card { max-width: 560px; }
  .auth-title { font-size: clamp(40px, 3.2vw, 56px); }
}

/* laptop pendek: rapatkan agar form tidak perlu scroll */
@media (min-width: 900px) and (max-height: 780px) {
  .auth-brand, .auth-main { padding: 30px 40px; }
  .auth-brand-top { top: 24px; left: 40px; right: 40px; }
  .auth-brand-foot { left: 40px; right: 40px; bottom: 24px; }
  .auth-title { font-size: clamp(28px, 2.6vw, 36px); }
  .auth-groups { gap: 14px; }
  .auth-main .auth-card { padding: 22px; gap: 13px; }
  .auth-points { gap: 9px; }
  .auth-points li { font-size: var(--fs-small); }
  .auth-brand-foot::before { margin-bottom: 10px; }
  .fld-box .field { min-height: 48px; }
  .auth-cta.btn-primary { min-height: 50px; }
}

/* ================================================================
   MOBILE pendek (satu kolom, tinggi terbatas)
   ================================================================ */
@media (max-width: 899px) and (max-height: 740px) {
  .beling-motion-stage { padding: 8px 0 12px; }
  .motion-wordmark { font-size: clamp(38px, 8vw, 52px); }
  .motion-caption { display: none; }
  .auth-title { font-size: 21px; }
  .screen-auth { gap: 10px; }
  .auth-card { padding: 14px; gap: 12px; }
  .auth-form { gap: 11px; }
}
@media (max-width: 899px) and (max-height: 680px) {
  .beling-motion-stage { padding: 4px 0 8px; }
  .motion-wordmark { font-size: 34px; }
  .screen-auth { gap: 8px; }
  .auth-tag { display: none; }
  .auth-head { gap: 0; }
  .auth-proof { display: none; }
  .fld-box .field { min-height: 48px; }
}

/* malam: kurangi pendar + matikan lapisan dekoratif auth (hemat baterai OLED) */
[data-mode="night"] .auth-card { box-shadow: none; }
[data-mode="night"] .motion-glow { display: none; }
[data-mode="night"] .auth-brand::before,
[data-mode="night"] .auth-main::before,
[data-mode="night"] .auth-main .auth-card::after { display: none; }
[data-mode="night"] .auth-brand {
  background: radial-gradient(120% 100% at 50% 38%, var(--accent-glow), transparent 62%),
    var(--ink-bg);
}
[data-mode="night"] .auth-main {
  background: radial-gradient(120% 100% at 50% 60%, var(--accent-glow), transparent 62%),
    var(--bg);
}