@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=ZCOOL+XiaoWei&display=swap");
:root {
  font-family: "Noto Sans SC", system-ui, sans-serif;
  color: #effcff;
  background: #020b13;
  --deep: #061b2b;
  --panel: rgba(13, 48, 63, 0.72);
  --line: rgba(139, 224, 218, 0.18);
  --aqua: #76e4d5;
  --sand: #f1c27d;
  --muted: #91abb7;
  --danger: #ff8f91;
}
* {
  box-sizing: border-box;
}
html {
  background: #020b13;
}
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: radial-gradient(
    circle at 50% 0,
    #0b4050 0,
    #061b2b 38%,
    #020b13 100%
  );
  line-height: 1.55;
}
body:before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(
    circle,
    rgba(118, 228, 213, 0.22) 1px,
    transparent 1px
  );
  background-size: 42px 42px;
  mask-image: linear-gradient(#000, transparent 80%);
}
button,
input,
textarea,
select,
a {
  font: inherit;
}
button,
input,
textarea,
select,
.primary,
.secondary,
.danger,
.icon-link,
.avatar {
  min-height: 44px;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--sand);
  outline-offset: 3px;
}
.app-shell {
  position: relative;
  width: min(100%, 430px);
  min-height: 100dvh;
  margin: auto;
  background: linear-gradient(
    180deg,
    rgba(6, 27, 43, 0.18),
    rgba(2, 11, 19, 0.88)
  );
  box-shadow: 0 0 70px #000;
  padding-bottom: 84px;
  overflow: hidden;
}
main {
  min-height: calc(100dvh - 84px);
}
.page,
.list,
.settings {
  padding: 1rem 1.1rem;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: max(1rem, env(safe-area-inset-top)) 1.1rem 1rem;
}
.topbar h1 {
  font:
    500 1.4rem "ZCOOL XiaoWei",
    serif;
  margin: 0;
}
.topbar small,
.eyebrow {
  letter-spacing: 0.18em;
  color: var(--aqua);
  font-size: 0.68rem;
}
.icon-link,
.avatar {
  display: grid;
  place-items: center;
  min-width: 44px;
  color: #fff;
  text-decoration: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.avatar {
  font-weight: 700;
}
.glass {
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  border-radius: 22px;
  padding: 1.1rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}
.login {
  padding: 8vh 1.1rem 2rem;
}
.hero {
  padding: 2rem 0.3rem;
}
.hero h1,
.page h2,
.sea h2 {
  font:
    500 2.1rem/1.25 "ZCOOL XiaoWei",
    serif;
}
.hero h1 em {
  color: var(--sand);
  font-style: normal;
}
.hero > p:last-child,
.muted,
.quota-note {
  color: var(--muted);
}
.orb {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(118, 228, 213, 0.12);
  color: var(--aqua);
  box-shadow: 0 0 40px rgba(118, 228, 213, 0.25);
}
label {
  display: grid;
  gap: 0.45rem;
  color: #cce0e6;
  margin-bottom: 1rem;
}
input,
textarea,
select {
  width: 100%;
  color: #fff;
  background: rgba(0, 10, 18, 0.56);
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 0.72rem 0.85rem;
  resize: vertical;
}
textarea::placeholder,
input::placeholder {
  color: #77919d;
}
.primary,
.secondary,
.danger {
  display: grid;
  place-items: center;
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 0.7rem 1rem;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
}
.primary {
  color: #032128;
  background: linear-gradient(135deg, var(--aqua), #b8f3db);
}
.secondary {
  color: var(--aqua);
  background: rgba(118, 228, 213, 0.1);
  border: 1px solid rgba(118, 228, 213, 0.3);
}
.danger {
  color: #311016;
  background: var(--danger);
}
button:disabled {
  opacity: 0.48;
}
.text {
  border: 0;
  background: transparent;
  color: var(--aqua);
  padding: 0.5rem;
}
.error {
  color: #ffd0d0;
  background: rgba(255, 80, 90, 0.12);
  border-radius: 12px;
  padding: 0.7rem;
}
.demo {
  color: var(--sand);
  font-size: 0.9rem;
}
.sea {
  position: relative;
  padding: 1.5rem 1.1rem 2rem;
}
.moon {
  position: absolute;
  right: -35px;
  top: -20px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(
    circle at 35% 35%,
    #b8f3db,
    #178998 58%,
    transparent 61%
  );
  opacity: 0.22;
}
.actions {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
}
.action {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: #fff;
  text-decoration: none;
  padding: 1.25rem;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(
    135deg,
    rgba(118, 228, 213, 0.18),
    rgba(5, 24, 38, 0.7)
  );
}
.action b {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: rgba(118, 228, 213, 0.16);
  font-size: 1.7rem;
  color: var(--aqua);
}
.action span {
  font-size: 1.05rem;
  font-weight: 700;
}
.action small {
  display: block;
  color: var(--muted);
  font-weight: 400;
}
.quote {
  margin: 0 1.1rem;
  text-align: center;
  color: #c9e0e6;
}
.quota-note {
  font-size: 0.78rem;
}
.between,
.button-row,
.author,
.toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}
.button-row > * {
  width: auto;
  flex: 1;
}
.success,
.empty-ocean {
  margin: 4rem 1.1rem;
  text-align: center;
}
.success > b,
.bottle {
  font-size: 3rem;
  color: var(--aqua);
}
.bottle-card blockquote {
  font:
    500 1.5rem/1.6 "ZCOOL XiaoWei",
    serif;
  margin: 2rem 0.2rem;
}
.author {
  justify-content: flex-start;
}
.author i {
  width: 44px;
  height: 44px;
  border-radius: 50%;
}
.author small {
  display: block;
  color: var(--muted);
}
.list {
  display: grid;
  gap: 0.8rem;
}
.conversation {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.3rem;
  color: #fff;
  text-decoration: none;
}
.conversation p {
  margin: 0.3rem 0;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}
.conversation time {
  grid-column: 1;
  font-size: 0.7rem;
  color: var(--muted);
}
.badge,
.pill {
  border-radius: 99px;
  background: rgba(118, 228, 213, 0.15);
  color: var(--aqua);
  padding: 0.22rem 0.55rem;
  font-size: 0.72rem;
}
.chat {
  display: flex;
  flex-direction: column;
  height: calc(100dvh - 10px);
}
.messages {
  flex: 1;
  overflow: auto;
  padding: 1rem;
}
.bubble {
  max-width: 82%;
  margin: 0.7rem 0;
  padding: 0.75rem 1rem;
  border-radius: 18px 18px 18px 5px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.bubble p {
  margin: 0;
}
.bubble small {
  color: var(--muted);
}
.bubble.sending {
  opacity: 0.65;
}
.bubble.failed {
  border-color: var(--danger);
}
.composer {
  display: flex;
  gap: 0.6rem;
  padding: 0.8rem 1rem calc(0.8rem + env(safe-area-inset-bottom));
  background: #061b2b;
}
.composer textarea {
  min-height: 48px;
}
.composer button {
  min-width: 48px;
  border: 0;
  border-radius: 50%;
  background: var(--aqua);
  font-size: 1.5rem;
}
.dot {
  font-size: 0.7rem;
  color: var(--muted);
}
.dot.on {
  color: var(--aqua);
}
.chat-actions {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.chat-actions .text {
  min-width: 44px;
}
.report-dialog {
  position: absolute;
  z-index: 12;
  top: 18%;
  left: 1rem;
  right: 1rem;
  width: auto;
  margin: 0;
  color: #fff;
  background: #0b2d3b;
}
.report-dialog::backdrop {
  background: rgba(0, 0, 0, 0.65);
}
.bottle-row p {
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 1.12rem;
}
.bottle-row time,
.bottle-row small {
  color: var(--muted);
}
pre {
  white-space: pre-wrap;
  word-break: break-all;
  background: #020b13;
  padding: 0.6rem;
  border-radius: 10px;
  color: #9fc3cc;
}
.segmented {
  display: flex;
  padding: 0 1rem 1rem;
  gap: 0.3rem;
}
.segmented button {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--panel);
  color: #fff;
  border-radius: 12px;
}
.offline {
  position: sticky;
  top: 0;
  z-index: 10;
  text-align: center;
  background: #f1c27d;
  color: #2b1b05;
  padding: 0.35rem;
  font-size: 0.75rem;
}
.tabs {
  position: fixed;
  z-index: 8;
  bottom: 0;
  width: min(100%, 430px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0.55rem 0.5rem calc(0.55rem + env(safe-area-inset-bottom));
  background: rgba(3, 17, 28, 0.94);
  backdrop-filter: blur(18px);
  border-top: 1px solid var(--line);
}
.tabs a {
  display: grid;
  place-items: center;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.78rem;
}
.tabs a[aria-current="page"] {
  color: var(--aqua);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
code {
  color: var(--sand);
}
@media (min-width: 700px) {
  body {
    padding: 2rem 0;
  }
  .app-shell {
    min-height: calc(100dvh - 4rem);
    border-radius: 32px;
  }
  .tabs {
    bottom: 2rem;
    border-radius: 0 0 32px 32px;
  }
  .chat {
    height: calc(100dvh - 4rem);
  }
}
@media (prefers-reduced-motion: no-preference) {
  .orb,
  .bottle {
    animation: float 4s ease-in-out infinite;
  }
  @keyframes float {
    50% {
      transform: translateY(-8px);
    }
  }
}