/* ============================================================
   Nocturne — private messaging on Midnight
   Dark cosmic design system. No fonts, no frameworks.
   ============================================================ */

:root {
  --bg0: #000000;
  --bg1: #0a0a0a;
  --panel: rgba(0, 0, 0, 0.72);
  --panel-solid: #0f0f0f;
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.34);
  --violet: #ffffff;
  --violet-soft: #f0f0f0;
  --violet-dim: #b3b3b3;
  --moon: #ffffff;
  --text: #f5f5f5;
  --muted: #a3a3a3;
  --faint: #6f6f6f;
  --ada: #9a9a9a;
  --btc: #cfcfcf;
  --ok: #ffffff;
  --bad: #d9d9d9;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", Consolas, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 78% -10%, rgba(255, 255, 255, 0.22), transparent 60%),
    radial-gradient(900px 600px at 8% 110%, rgba(255, 255, 255, 0.16), transparent 60%),
    linear-gradient(180deg, var(--bg0) 0%, var(--bg1) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

#stars {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

#site, #app { position: relative; z-index: 1; }

.hidden { display: none !important; }

::selection { background: rgba(255, 255, 255, 0.35); }

a { color: var(--violet-soft); }

h1, h2, h3 { line-height: 1.15; margin: 0 0 0.4em; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.5rem, 6vw, 4.4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 750; }
h3 { font-size: 1.06rem; font-weight: 650; }

p { margin: 0 0 1em; }

.muted { color: var(--muted); }
.faint { color: var(--faint); }

/* ---------- buttons ---------- */
.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.62rem 1.15rem;
  font: 600 0.92rem/1 var(--font);
  color: var(--text);
  background: rgba(255, 255, 255, 0.10);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.16); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, #ffffff 0%, #d9d9d9 55%, #b3b3b3 100%);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 8px 26px rgba(255, 255, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn-primary:hover { box-shadow: 0 12px 34px rgba(255, 255, 255, 0.5); }

.btn-ghost { background: transparent; border-color: var(--line); color: var(--moon); }
.btn-ghost:hover { border-color: var(--line-strong); background: rgba(255, 255, 255, 0.08); }

.btn-lg { padding: 0.85rem 1.6rem; font-size: 1rem; border-radius: 12px; }

.btn-danger {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.4);
  color: #d0d0d0;
}
.btn-danger:hover { background: rgba(255, 255, 255, 0.2); }

.link {
  appearance: none;
  border: 0;
  background: none;
  color: var(--violet-soft);
  font: 600 0.86rem/1 var(--font);
  cursor: pointer;
  padding: 0.2rem 0;
  text-decoration: none;
}
.link:hover { text-decoration: underline; color: #ececec; }

.icon-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--moon);
  width: 34px;
  height: 34px;
  border-radius: 9px;
  font-size: 1.05rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-btn:hover { border-color: var(--line-strong); }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.4rem;
  padding: 0.8rem clamp(1rem, 4vw, 2.4rem);
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 750;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
}
.brand .moon-mark {
  width: 26px;
  height: 26px;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.6));
}
.brand-tag {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--faint);
  border: 1px solid var(--line);
  padding: 0.14rem 0.45rem;
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.15rem;
  margin-left: auto;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 550;
}
.nav-links a:hover { color: var(--text); }

.nav-actions { display: flex; align-items: center; gap: 0.7rem; }

.x-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--moon);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 9px;
}
.x-link:hover { border-color: var(--line-strong); background: rgba(255, 255, 255, 0.08); }

.nav-burger {
  display: none;
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--moon);
  border-radius: 9px;
  font-size: 1.1rem;
  width: 38px;
  height: 36px;
  cursor: pointer;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: clamp(4rem, 9vh, 7rem) clamp(1rem, 4vw, 2.4rem) clamp(3.5rem, 8vh, 6rem);
  max-width: 1180px;
  margin: 0 auto;
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet-soft);
  margin-bottom: 1.2rem;
}
.kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--violet-soft));
}

.hero h1 .grad {
  background: linear-gradient(100deg, #f0f0f0 10%, #ffffff 45%, #c9c9c9 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  margin-bottom: 2rem;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.6rem; }

.hero-stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 2.2rem;
  margin: 0;
  padding: 0;
}
.hero-stats li { display: flex; flex-direction: column; gap: 0.15rem; }
.hero-stats b { font-size: 1.15rem; letter-spacing: -0.01em; color: var(--moon); }
.hero-stats span { font-size: 0.82rem; color: var(--faint); }

.hero-moon {
  position: absolute;
  right: clamp(-120px, -2vw, 40px);
  top: 50%;
  transform: translateY(-50%);
  width: clamp(220px, 34vw, 460px);
  opacity: 0.9;
  pointer-events: none;
  animation: floaty 9s ease-in-out infinite;
}
@keyframes floaty {
  0%, 100% { transform: translateY(-50%); }
  50% { transform: translateY(calc(-50% - 14px)); }
}

/* ---------- sections ---------- */
.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(3rem, 7vh, 5rem) clamp(1rem, 4vw, 2.4rem);
}

.section-head { margin-bottom: 2rem; max-width: 640px; }
.section-head p { color: var(--muted); }

.grid { display: grid; gap: 1.1rem; }
.features-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 0.18s ease, border-color 0.2s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.card .icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 0.9rem;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.14));
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--violet-soft);
}
.card h3 { margin-bottom: 0.35rem; }
.card p { color: var(--muted); font-size: 0.93rem; margin: 0; }

/* midnight section */
.section-dark {
  position: relative;
  max-width: none;
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(255, 255, 255, 0.14), transparent 70%),
    rgba(0, 0, 0, 0.75);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.section-dark .inner { max-width: 1180px; margin: 0 auto; }
.section-dark::before,
.section-dark::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(255, 255, 255, 0.7), transparent 100%),
    radial-gradient(1px 1px at 32% 68%, rgba(255, 255, 255, 0.5), transparent 100%),
    radial-gradient(1.5px 1.5px at 55% 30%, rgba(255, 255, 255, 0.6), transparent 100%),
    radial-gradient(1px 1px at 71% 78%, rgba(255, 255, 255, 0.55), transparent 100%),
    radial-gradient(1px 1px at 86% 18%, rgba(255, 255, 255, 0.65), transparent 100%),
    radial-gradient(1.2px 1.2px at 24% 88%, rgba(255, 255, 255, 0.5), transparent 100%);
}

.mid-cards { grid-template-columns: repeat(3, 1fr); }
.mid-card { display: flex; gap: 0.9rem; align-items: flex-start; }
.mid-card .num {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #0a0a0a;
  background: linear-gradient(135deg, #f0f0f0, #ffffff);
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.4);
}
.mid-card p { margin: 0; font-size: 0.92rem; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; counter-reset: step; }
.step {
  position: relative;
  padding: 1.5rem 1.4rem 1.3rem;
}
.step .n {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--violet-soft);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.6rem;
}
.step p { color: var(--muted); font-size: 0.93rem; margin: 0; }

/* honesty */
.honesty-grid { grid-template-columns: 1fr 1fr; }
.h-card { border-left: 3px solid var(--violet); }
.h-card.sim { border-left-color: var(--btc); }
.h-list { list-style: none; margin: 0.4rem 0 0; padding: 0; }
.h-list li {
  display: flex;
  gap: 0.6rem;
  padding: 0.5rem 0;
  color: var(--muted);
  font-size: 0.93rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.14);
}
.h-list li:last-child { border-bottom: 0; }
.h-list .mark { font-weight: 800; }
.h-card .mark { color: var(--ok); }
.h-card.sim .mark { color: var(--btc); }

/* ---------- donations ---------- */
.donate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.donation {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.don-top { display: flex; align-items: center; gap: 0.7rem; }
.don-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  background: radial-gradient(circle at 30% 25%, rgba(255,255,255,0.25), transparent 45%), var(--c, #333);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--c, #333) 40%, transparent);
}
.don-label { font-weight: 700; }
.don-addr {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  word-break: break-all;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 0.55rem 0.65rem;
  line-height: 1.4;
}
.don-actions { display: flex; gap: 0.9rem; align-items: center; }
.don-note { color: var(--faint); font-size: 0.85rem; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 2.2rem clamp(1rem, 4vw, 2.4rem) 2.6rem;
  max-width: 1180px;
  margin: 0 auto;
}
.foot-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}
.foot-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.foot-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.foot-links a:hover { color: var(--text); }
.foot-legal { color: var(--faint); font-size: 0.8rem; max-width: 760px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-moon { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   APP SHELL
   ============================================================ */
.app {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(255, 255, 255, 0.2), transparent 60%),
    linear-gradient(180deg, #000000 0%, #050505 100%);
}

.app-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem clamp(0.8rem, 2.5vw, 1.4rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 5;
}
.app-bar .brand { margin-right: auto; }

.app-id {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.8rem 0.3rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
}
.app-id .who { display: flex; flex-direction: column; line-height: 1.25; }
.app-id b { font-size: 0.86rem; }
.app-id small { color: var(--faint); font-size: 0.72rem; }

.badge-lock {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ok);
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.08);
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.app-actions { display: flex; gap: 0.6rem; align-items: center; }

.app-body {
  flex: 1;
  display: flex;
  min-height: 0;
}

/* side */
.app-side {
  width: 300px;
  flex: 0 0 auto;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: rgba(0, 0, 0, 0.5);
}
.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  padding: 0.6rem;
}
.tab-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: 600 0.8rem/1 var(--font);
  padding: 0.55rem 0.3rem;
  border-radius: 9px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.28rem;
}
.tab-btn .ti { font-size: 1rem; }
.tab-btn:hover { color: var(--text); background: rgba(255, 255, 255, 0.07); }
.tab-btn.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.28);
}

.side-list { flex: 1; overflow-y: auto; padding: 0.4rem 0.6rem 1rem; min-height: 0; }

.side-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  padding: 0.6rem 0.65rem;
  border-radius: 11px;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
}
.side-item:hover { background: rgba(255, 255, 255, 0.07); }
.side-item.active {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.26);
}
.side-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.1rem; }
.side-main b { font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.side-prev {
  color: var(--faint);
  font-size: 0.78rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.side-prev i { color: var(--violet-soft); font-style: normal; }
.side-time { color: var(--faint); font-size: 0.72rem; flex: 0 0 auto; }

.side-note {
  margin: 0.5rem 0.3rem;
  padding: 0.9rem 0.95rem;
  border: 1px dashed var(--line);
  border-radius: 11px;
  color: var(--muted);
  font-size: 0.85rem;
}
.side-note b { display: block; color: var(--text); margin-bottom: 0.3rem; }
.side-note p { margin: 0.3rem 0; }

/* avatars */
.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 750;
  font-size: 1rem;
  color: #fff;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.28), transparent 46%),
    var(--c, #ffffff);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.avatar.sm { width: 32px; height: 32px; font-size: 0.88rem; }

/* main */
.app-main {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  padding: clamp(0.9rem, 2.5vw, 1.6rem);
}
.app-main > * { max-width: 860px; margin-left: auto; margin-right: auto; }

.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}
.pane-head h3 { margin-bottom: 0.1rem; font-size: 1.15rem; }
.pane-head p { margin: 0; font-size: 0.85rem; }

.empty {
  text-align: center;
  padding: 3.5rem 1rem;
  color: var(--muted);
}
.empty-moon { font-size: 2.4rem; display: block; margin-bottom: 0.8rem; color: var(--violet-soft); }
.empty p { margin-bottom: 1.2rem; }

/* contact list (mobile) */
.c-list { display: flex; flex-direction: column; gap: 0.4rem; }
.c-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  width: 100%;
}
.c-row:hover { border-color: var(--line-strong); }
.c-mid { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.12rem; }
.c-mid b { font-size: 0.95rem; }
.c-mid small { color: var(--faint); font-size: 0.8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.c-end { display: flex; flex-direction: column; align-items: flex-end; gap: 0.3rem; color: var(--faint); font-size: 0.75rem; }

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3a3a3a;
  display: inline-block;
}
.dot.on { background: var(--ok); box-shadow: 0 0 8px rgba(255, 255, 255, 0.8); }

/* chat */
.chat {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 190px);
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.6);
}
.chat-id { display: flex; flex-direction: column; line-height: 1.3; }
.chat-id b { font-size: 0.98rem; }
.chat-sub { color: var(--faint); font-size: 0.78rem; display: flex; gap: 0.45rem; align-items: center; flex-wrap: wrap; }

.lock-chip {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--violet-soft);
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
  padding: 0.14rem 0.45rem;
  border-radius: 999px;
}

.back-m { display: none; }

.msgs {
  flex: 1;
  overflow-y: auto;
  padding: 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
}

.msg { display: flex; flex-direction: column; max-width: 78%; }
.msg.me { align-self: flex-end; align-items: flex-end; }
.msg.them { align-self: flex-start; align-items: flex-start; }

.bubble {
  padding: 0.62rem 0.9rem;
  border-radius: 15px;
  font-size: 0.94rem;
  line-height: 1.45;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.msg.them .bubble {
  background: rgba(0, 0, 0, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-bottom-left-radius: 5px;
}
.msg.me .bubble {
  background: linear-gradient(135deg, #d0d0d0 0%, #c4c4c4 100%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-bottom-right-radius: 5px;
  box-shadow: 0 6px 18px rgba(255, 255, 255, 0.35);
}

.meta {
  font-size: 0.68rem;
  color: var(--faint);
  margin-top: 0.25rem;
  padding: 0 0.2rem;
  display: flex;
  gap: 0.3rem;
  align-items: center;
}

.tick { font-size: 0.72rem; letter-spacing: -0.08em; }
.t-sent { color: var(--faint); }
.t-delivered { color: #c9c9c9; }
.t-read { color: #ffffff; }

.typing {
  display: flex;
  gap: 5px;
  padding: 0.65rem 0.95rem;
  align-self: flex-start;
  background: rgba(0, 0, 0, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 15px;
  border-bottom-left-radius: 5px;
}
.typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet-soft);
  opacity: 0.5;
  animation: blink 1.2s infinite;
}
.typing span:nth-child(2) { animation-delay: 0.18s; }
.typing span:nth-child(3) { animation-delay: 0.36s; }
@keyframes blink {
  0%, 80%, 100% { opacity: 0.25; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

.composer {
  display: flex;
  gap: 0.6rem;
  padding: 0.75rem 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.6);
}
.composer input {
  flex: 1;
  min-width: 0;
}

input, textarea, select {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.85);
  color: var(--text);
  border-radius: 10px;
  padding: 0.65rem 0.8rem;
  font: 400 0.92rem/1.4 var(--font);
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--violet);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.18);
}
input::placeholder, textarea::placeholder { color: var(--faint); }
textarea { resize: vertical; min-height: 120px; font-family: var(--font); }

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.9rem;
}
label input, label textarea { margin-top: 0.4rem; font-weight: 400; }

/* mail */
.m-list { display: flex; flex-direction: column; gap: 0.4rem; }
.m-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 0.7rem 0.9rem;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  width: 100%;
}
.m-row:hover { border-color: var(--line-strong); }
.m-row.unread { border-color: rgba(255, 255, 255, 0.4); background: rgba(255, 255, 255, 0.09); }
.m-mid { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.12rem; }
.m-mid b { font-size: 0.94rem; }
.m-mid small { color: var(--faint); font-size: 0.8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.m-end { color: var(--faint); font-size: 0.75rem; flex: 0 0 auto; }

.mail-read {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.55);
  padding: 1.4rem;
}
.mail-from { display: flex; gap: 0.8rem; align-items: center; margin-bottom: 1.2rem; }
.mail-from div { display: flex; flex-direction: column; }
.mail-from b { font-size: 0.98rem; }
.mail-from small { color: var(--faint); font-size: 0.8rem; }
.mail-body { white-space: pre-wrap; color: var(--text); font-size: 0.95rem; }
.mail-foot { margin-top: 1.4rem; color: var(--faint); font-size: 0.78rem; border-top: 1px dashed var(--line); padding-top: 0.9rem; }

/* send */
.asset-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; margin-bottom: 1.4rem; }
.asset-card {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 12px;
  padding: 0.9rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font);
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.12s ease;
}
.asset-card:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.asset-card.sel {
  border-color: var(--c);
  background: color-mix(in srgb, var(--c) 12%, transparent);
  box-shadow: 0 0 0 1px var(--c), 0 8px 24px color-mix(in srgb, var(--c) 25%, transparent);
}
.asset-card b { font-size: 0.95rem; letter-spacing: 0.04em; }
.asset-card small { color: var(--faint); font-size: 0.76rem; }

.coin {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.3), transparent 45%),
    var(--c, #ffffff);
  box-shadow: 0 5px 16px color-mix(in srgb, var(--c, #ffffff) 45%, transparent);
}
.coin.dots { position: relative; background: radial-gradient(circle at 30% 25%, rgba(255,255,255,0.3), transparent 45%), var(--c, #9a9a9a); }
.coin.dots::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
}
.coin.dots i {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #fff;
}
.coin.dots i:nth-child(1) { top: 4px; left: 16px; }
.coin.dots i:nth-child(2) { top: 9px; right: 6px; }
.coin.dots i:nth-child(3) { top: 9px; left: 6px; }
.coin.dots i:nth-child(4) { bottom: 4px; left: 16px; }
.coin.dots i:nth-child(5) { bottom: 9px; right: 6px; }
.coin.dots i:nth-child(6) { bottom: 9px; left: 6px; }

.form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.55);
  padding: 1.3rem;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }

.fee-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0.9rem;
  border: 1px dashed var(--line);
  border-radius: 10px;
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.fee-row b { color: var(--text); }

.field-note { margin: -0.5rem 0 0.9rem; font-size: 0.8rem; color: var(--faint); min-height: 1.1em; }
.field-note.ok { color: var(--ok); }
.field-note.bad { color: var(--bad); }

/* activity */
.tx-list { display: flex; flex-direction: column; gap: 0.5rem; }
.tx-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  gap: 0.2rem 0.9rem;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  padding: 0.8rem 1rem;
}
.tx-coin {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.3), transparent 45%),
    var(--c, #ffffff);
  grid-row: span 2;
}
.tx-mid { min-width: 0; }
.tx-mid b { font-size: 0.95rem; display: block; }
.tx-mid small { color: var(--faint); font-size: 0.78rem; }
.tx-end { display: flex; flex-direction: column; gap: 0.3rem; align-items: flex-end; }
.chip {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ok);
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}
.tx-time { color: var(--faint); font-size: 0.75rem; }
.tx-hash { grid-column: 2 / 4; justify-self: start; font-family: var(--mono); font-size: 0.74rem; }

/* ---------- modals ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal-card {
  width: 100%;
  max-width: 460px;
  max-height: 88vh;
  overflow-y: auto;
  background: linear-gradient(180deg, #1a1a1a 0%, #111111 100%);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  padding: 1.7rem;
  box-shadow: var(--shadow), 0 0 80px rgba(255, 255, 255, 0.18);
}
.modal-card h2 { font-size: 1.35rem; }
.modal-card .sub { color: var(--muted); font-size: 0.92rem; margin-bottom: 1.3rem; }

.handle-row { display: flex; align-items: center; gap: 0; }
.handle-row input { border-left: 0; border-top-left-radius: 0; border-bottom-left-radius: 0; }
.handle-prefix {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  border: 1px solid var(--line);
  border-right: 0;
  border-radius: 10px 0 0 10px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--violet-soft);
  font-weight: 700;
}
.mailbox-preview {
  margin: -0.4rem 0 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--violet-soft);
  background: rgba(255, 255, 255, 0.07);
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
}

.hint {
  font-size: 0.8rem;
  color: var(--faint);
  margin: -0.4rem 0 1rem;
}

.modal-actions { display: flex; gap: 0.7rem; margin-top: 0.4rem; flex-wrap: wrap; }
.modal-actions .btn { flex: 1; justify-content: center; }

/* review modal */
.modal-card.wide { max-width: 560px; }
.rv-head { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1.2rem; }
.rv-coin {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.3), transparent 45%),
    var(--c, #ffffff);
}
.rv-head h2 { margin: 0; font-size: 1.25rem; }
.rv-head small { color: var(--faint); }

.rv-qr {
  display: flex;
  justify-content: center;
  margin: 0 auto 1.2rem;
  width: 210px;
  height: 210px;
  background: #fff;
  border-radius: 14px;
  padding: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}
.rv-qr svg { width: 100%; height: 100%; display: block; }
.qr-fallback { font-family: var(--mono); font-size: 0.68rem; color: #111; word-break: break-all; padding: 0.6rem; }

.rv-rows { display: flex; flex-direction: column; gap: 0.55rem; margin-bottom: 1.2rem; }
.rv-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.88rem;
  color: var(--muted);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.14);
  padding-bottom: 0.5rem;
}
.rv-row b { color: var(--text); font-weight: 600; text-align: right; }
.rv-addr { font-family: var(--mono); font-size: 0.78rem; word-break: break-all; }

/* progress steps */
.steps-box { display: flex; flex-direction: column; gap: 0.6rem; margin: 1rem 0 1.3rem; }
.step {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  color: var(--faint);
  font-size: 0.9rem;
}
.step .mk {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex: 0 0 auto;
}
.step.busy { color: var(--text); border-color: var(--line-strong); }
.step.busy .mk { border-color: var(--violet); border-top-color: transparent; animation: spin 0.8s linear infinite; }
.step.done { color: var(--ok); }
.step.done .mk { border-color: var(--ok); background: rgba(255, 255, 255, 0.15); color: var(--ok); animation: none; }
.step.done .mk::after { content: "✓"; }
@keyframes spin { to { transform: rotate(360deg); } }

.rv-success { text-align: center; padding: 0.6rem 0 0.4rem; }
.rv-success .big { font-size: 2.6rem; color: var(--ok); margin-bottom: 0.5rem; }
.rv-success h2 { margin-bottom: 0.3rem; }
.hash-box {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.6rem;
  word-break: break-all;
  margin: 0.9rem 0 1.2rem;
  cursor: pointer;
}
.hash-box:hover { border-color: var(--line-strong); }

/* ---------- toast ---------- */
.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 200;
  max-width: min(420px, calc(100vw - 44px));
  background: rgba(0, 0, 0, 0.95);
  border: 1px solid var(--line-strong);
  color: var(--text);
  border-radius: 12px;
  padding: 0.75rem 1.05rem;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.toast.show { opacity: 1; transform: none; }
.toast.err { border-color: rgba(255, 255, 255, 0.5); color: #cfcfcf; }

/* ---------- scrollbars ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.22); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.38); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- focus ---------- */
:focus-visible {
  outline: 2px solid var(--violet-soft);
  outline-offset: 2px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1020px) {
  .features-grid, .mid-cards, .steps, .donate-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-moon { opacity: 0.5; }
}

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(0, 0, 0, 0.97);
    border-bottom: 1px solid var(--line);
    padding: 0.4rem 1rem 0.8rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 0.4rem; }
  .nav-burger { display: inline-flex; align-items: center; justify-content: center; margin-left: auto; }
  .nav-actions { margin-left: 0; }
  .nav-actions .x-link { display: none; }

  .hero { min-height: auto; }
  .hero-stats { gap: 1.3rem; }

  .app-id { display: none; }
  .app-body { flex-direction: column; }
  .app-side { width: 100%; border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
  .side-list { display: none; }
  .chat { height: calc(100vh - 260px); }
  .back-m { display: inline-flex; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 560px) {
  .features-grid, .mid-cards, .steps, .donate-grid, .honesty-grid, .asset-row { grid-template-columns: 1fr; }
  .app-bar .brand-tag { display: none; }
  .brand { font-size: 1rem; }
  .btn-lg { width: 100%; justify-content: center; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .tx-row { grid-template-columns: auto 1fr; }
  .tx-end { grid-column: 2; flex-direction: row; justify-content: flex-start; }
  .tx-hash { grid-column: 1 / 3; }
}