/* BBS Alert — miniapp Telegram
   Tema: biru malam, silver chrome, emas.
   Catatan a11y: seluruh pasangan teks/latar di bawah diuji >= 4.5:1, target
   sentuh >= 44px, dan animasi dimatikan saat prefers-reduced-motion. */

:root {
  /* Biru */
  --biru-900: #060E18;
  --biru-800: #0A1420;
  --biru-700: #101E30;
  --biru-600: #16293F;
  --biru-500: #1E3A57;
  --biru-aksen: #4FA8E8;

  /* Silver chrome */
  --chrome-100: #F4F7FA;
  --chrome-200: #DCE4ED;
  --chrome-300: #B8C6D6;
  --chrome-400: #8FA3B8;

  /* Emas */
  --emas-300: #F2D98A;
  --emas-400: #E5C158;
  --emas-500: #D4AF37;
  --emas-600: #A88420;

  --teks: var(--chrome-100);
  --teks-lembut: var(--chrome-300);
  --teks-redup: var(--chrome-400);

  --garis: rgba(184, 198, 214, 0.16);
  --garis-terang: rgba(184, 198, 214, 0.28);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-full: 999px;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;

  --bayang: 0 18px 40px -18px rgba(0, 0, 0, 0.85);
  --gerak: 220ms cubic-bezier(0.2, 0.8, 0.3, 1);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--teks);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(79, 168, 232, 0.18), transparent 62%),
    radial-gradient(700px 460px at 92% 4%, rgba(212, 175, 55, 0.13), transparent 60%),
    linear-gradient(180deg, var(--biru-800) 0%, var(--biru-900) 100%);
  background-attachment: fixed;
  padding: 0 var(--sp-4) calc(var(--sp-7) + env(safe-area-inset-bottom));
  overflow-x: hidden;
}

h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: -100px;
  z-index: 40;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-sm);
  background: var(--emas-500);
  color: var(--biru-900);
  font-weight: 700;
  text-decoration: none;
  transition: top var(--gerak);
}
.skip-link:focus-visible { top: var(--sp-4); }

:where(button, a, [tabindex]):focus-visible {
  outline: 2px solid var(--emas-400);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* Kilau chrome tipis di puncak layar. Dekoratif, tidak menggeser layout. */
.chrome-sheen {
  position: fixed;
  inset: 0 0 auto 0;
  height: 200px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(244, 247, 250, 0.09), transparent 78%);
  z-index: 0;
}

/* ---------- Topbar ---------- */
.topbar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: calc(var(--sp-5) + env(safe-area-inset-top)) 0 var(--sp-5);
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  min-width: 0;
}

.topbar__logo {
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 13px;
  object-fit: cover;
  background: var(--biru-700);
  border: 1px solid var(--garis-terang);
  box-shadow: 0 0 0 1px rgba(212, 175, 55, 0.22), var(--bayang);
}

.topbar__text { min-width: 0; }

.topbar__title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  background: linear-gradient(100deg, var(--chrome-100) 12%, var(--emas-300) 52%, var(--chrome-200) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
/* Cadangan bila background-clip:text tak didukung. */
@supports not (background-clip: text) {
  .topbar__title { color: var(--chrome-100); }
}

.topbar__sub {
  font-size: 0.8rem;
  color: var(--teks-redup);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  flex: none;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--garis);
  border-radius: var(--r-full);
  background: rgba(16, 30, 48, 0.72);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--teks-lembut);
}

.status__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34D399;
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.16);
  animation: denyut 2.4s ease-in-out infinite;
}

@keyframes denyut {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* ---------- Panel ---------- */
.panel {
  position: relative;
  z-index: 1;
  margin-bottom: var(--sp-6);
}

.panel__head { margin-bottom: var(--sp-4); }

.panel__title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--emas-300);
}

.panel__desc {
  margin-top: var(--sp-2);
  font-size: 0.9rem;
  color: var(--teks-lembut);
  max-width: 60ch;
}

/* ---------- Chip saringan ---------- */
.filters {
  display: flex;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
  overflow-x: auto;
  scrollbar-width: none;
  /* Beri ruang supaya outline fokus tidak terpotong saat menggulir. */
  padding: 3px;
  margin-inline: -3px;
}
.filters::-webkit-scrollbar { display: none; }

.chip {
  flex: none;
  min-height: 44px;
  padding: 0 var(--sp-4);
  border: 1px solid var(--garis);
  border-radius: var(--r-full);
  background: rgba(16, 30, 48, 0.6);
  color: var(--teks-lembut);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--gerak), color var(--gerak), border-color var(--gerak);
}

.chip:hover { border-color: var(--garis-terang); color: var(--teks); }

.chip.is-active {
  background: linear-gradient(135deg, var(--emas-500), var(--emas-600));
  border-color: var(--emas-400);
  color: #1A1205;
}

/* ---------- Grid kartu ---------- */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

@media (min-width: 560px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  body { padding-inline: max(var(--sp-4), calc((100vw - 1040px) / 2)); }
  .grid { grid-template-columns: repeat(3, 1fr); }
}

.card {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  min-height: 76px;
  padding: var(--sp-4) var(--sp-4) var(--sp-4) var(--sp-5);
  border: 1px solid var(--garis);
  border-radius: var(--r-md);
  background:
    linear-gradient(135deg, rgba(244, 247, 250, 0.05), transparent 46%),
    rgba(16, 30, 48, 0.78);
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--gerak), border-color var(--gerak), box-shadow var(--gerak);
}

/* Pita warna penanda jenis alert. */
.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--aksen, var(--chrome-400));
  box-shadow: 0 0 16px -1px var(--aksen, transparent);
}

/* Cahaya lembut mengikuti warna kartu, muncul saat disentuh. */
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(120% 100% at 0% 50%, var(--aksen) 0%, transparent 58%);
  transition: opacity var(--gerak);
  pointer-events: none;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--aksen, var(--garis-terang));
  box-shadow: var(--bayang);
}
.card:hover::after,
.card:focus-visible::after { opacity: 0.14; }

.card:active { transform: translateY(0) scale(0.99); }

.card__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  font-size: 1.25rem;
  line-height: 1;
  background: color-mix(in srgb, var(--aksen) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--aksen) 42%, transparent);
}

@supports not (background: color-mix(in srgb, red 10%, blue)) {
  .card__icon { background: rgba(244, 247, 250, 0.08); }
}

.card__body { min-width: 0; flex: 1; }

.card__name {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--teks);
}

.card__tag {
  margin-top: 2px;
  font-size: 0.8rem;
  color: var(--teks-redup);
}

.card__chevron {
  flex: none;
  color: var(--teks-redup);
  transition: transform var(--gerak), color var(--gerak);
}
.card:hover .card__chevron {
  transform: translateX(3px);
  color: var(--aksen);
}

/* Kartu masuk bergiliran saat pertama tampil. */
.card-enter {
  animation: naik 380ms cubic-bezier(0.2, 0.8, 0.3, 1) backwards;
  animation-delay: var(--tunda, 0ms);
}

@keyframes naik {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.empty {
  padding: var(--sp-5);
  text-align: center;
  color: var(--teks-redup);
  border: 1px dashed var(--garis);
  border-radius: var(--r-md);
}

/* ---------- Langkah ---------- */
.steps { display: grid; gap: var(--sp-3); }

.steps__item {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border: 1px solid var(--garis);
  border-radius: var(--r-md);
  background: rgba(16, 30, 48, 0.55);
}

.steps__num {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--emas-400), var(--emas-600));
  color: #1A1205;
  font-size: 0.85rem;
  font-weight: 800;
}

.steps__title { font-size: 0.95rem; font-weight: 700; }

.steps__body {
  margin-top: 2px;
  font-size: 0.86rem;
  color: var(--teks-lembut);
}

/* ---------- Footer ---------- */
.footer {
  position: relative;
  z-index: 1;
  padding: var(--sp-5) 0;
  border-top: 1px solid var(--garis);
  text-align: center;
  font-size: 0.8rem;
  color: var(--teks-redup);
}

/* ---------- Sheet contoh alert ---------- */
.sheet {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.sheet[hidden] { display: none; }

.sheet__scrim {
  position: absolute;
  inset: 0;
  background: rgba(3, 8, 14, 0.72);
  backdrop-filter: blur(3px);
  animation: pudar 200ms ease both;
}

@keyframes pudar {
  from { opacity: 0; }
  to { opacity: 1; }
}

.sheet__panel {
  position: relative;
  width: min(560px, 100%);
  max-height: 86dvh;
  overflow-y: auto;
  padding: var(--sp-3) var(--sp-4) calc(var(--sp-5) + env(safe-area-inset-bottom));
  border: 1px solid var(--garis-terang);
  border-bottom: none;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  background: linear-gradient(180deg, var(--biru-600), var(--biru-800));
  box-shadow: 0 -20px 50px -20px rgba(0, 0, 0, 0.9);
  animation: geser-naik 260ms cubic-bezier(0.2, 0.8, 0.3, 1) both;
}

@media (min-width: 560px) {
  .sheet { align-items: center; }
  .sheet__panel {
    border-radius: var(--r-lg);
    border-bottom: 1px solid var(--garis-terang);
  }
  .sheet__grip { display: none; }
}

@keyframes geser-naik {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: none; }
}

.sheet__grip {
  width: 40px;
  height: 4px;
  margin: 0 auto var(--sp-3);
  border-radius: var(--r-full);
  background: var(--garis-terang);
}

.sheet__head {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--garis);
}

.sheet__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  font-size: 1.3rem;
  background: color-mix(in srgb, var(--aksen) 20%, transparent);
  border: 1px solid color-mix(in srgb, var(--aksen) 46%, transparent);
}

.sheet__head > div { flex: 1; min-width: 0; }

.sheet__title { font-size: 1.05rem; font-weight: 700; }

.sheet__tag {
  font-size: 0.83rem;
  color: var(--teks-redup);
}

.sheet__close {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--garis);
  border-radius: var(--r-full);
  background: transparent;
  color: var(--teks-lembut);
  cursor: pointer;
  transition: background var(--gerak), color var(--gerak);
}
.sheet__close:hover { background: rgba(244, 247, 250, 0.08); color: var(--teks); }

.sheet__body { padding-top: var(--sp-4); }

.sheet__label {
  margin-bottom: var(--sp-2);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--teks-redup);
}

/* Tiruan gelembung pesan Telegram. */
.bubble {
  position: relative;
  padding: var(--sp-4);
  border-radius: var(--r-md);
  border: 1px solid var(--garis);
  border-left: 4px solid var(--aksen, var(--chrome-400));
  background: rgba(6, 14, 24, 0.72);
  font-size: 0.9rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.bubble b { color: var(--chrome-100); }
.bubble i { color: var(--teks-redup); }

.bubble code {
  padding: 1px 6px;
  border-radius: 6px;
  background: rgba(244, 247, 250, 0.1);
  font-family: var(--font-mono);
  font-size: 0.86em;
}

.bubble blockquote {
  margin: var(--sp-2) 0 0;
  padding-left: var(--sp-3);
  border-left: 2px solid var(--aksen, var(--garis-terang));
  color: var(--teks-lembut);
}

.bubble .band { letter-spacing: 1px; }

/* ---------- Hormati preferensi gerak ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .card:hover,
  .card:focus-visible { transform: none; }
}