@tailwind base;
@tailwind components;
@tailwind utilities;

:root {
  --ink: #101820;
  --panel: rgba(15, 28, 38, 0.78);
  --panel-strong: rgba(9, 18, 25, 0.92);
  --line: rgba(255, 255, 255, 0.12);
  --muted: rgba(229, 241, 244, 0.68);
  --text: #f5fbfc;
  --cyan: #27e0c1;
  --amber: #ffb45c;
  --danger: #ff6b6b;
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
  font-weight: 400;
  color: var(--text);
  background: var(--ink);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.entry-shell,
.chat-shell {
  min-height: 100vh;
  overflow: hidden;
  position: relative;
  background:
    radial-gradient(circle at 18% 18%, rgba(39, 224, 193, 0.24), transparent 28%),
    radial-gradient(circle at 80% 12%, rgba(255, 180, 92, 0.26), transparent 24%),
    radial-gradient(circle at 52% 82%, rgba(114, 137, 255, 0.14), transparent 30%),
    linear-gradient(135deg, #081018 0%, #101820 45%, #162630 100%);
}

.entry-shell::before,
.chat-shell::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
  inset: 0;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
  position: absolute;
}

.entry-hero {
  align-items: center;
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(0, 1fr) 420px;
  margin: 0 auto;
  max-width: 1180px;
  min-height: 100vh;
  padding: 64px 32px;
  position: relative;
  z-index: 1;
}

.entry-copy h1 {
  font-size: clamp(48px, 6vw, 82px);
  letter-spacing: -0.07em;
  line-height: 0.96;
  margin: 20px 0;
  max-width: 720px;
}

.entry-copy p {
  color: var(--muted);
  font-size: 18px;
  max-width: 650px;
}

.eyebrow {
  align-items: center;
  color: var(--cyan);
  display: inline-flex;
  font-size: 13px;
  font-weight: 700;
  gap: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.entry-card {
  backdrop-filter: blur(22px);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.045)),
    radial-gradient(circle at 18% 0%, rgba(39, 224, 193, 0.16), transparent 36%);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
  overflow: hidden;
  padding: 30px;
  position: relative;
}

.entry-card::before {
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  content: "";
  height: 3px;
  inset: 0 0 auto;
  opacity: 0.86;
  position: absolute;
}

.card-heading {
  align-items: center;
  display: flex;
  gap: 14px;
  margin-bottom: 26px;
}

.card-heading svg {
  color: var(--amber);
}

.card-heading h2 {
  font-size: 24px;
  margin: 0;
}

.card-heading p {
  color: var(--muted);
  margin: 0;
}

.fine-print {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  color: var(--muted);
  margin: 18px 0 0;
  padding-top: 14px;
}

.field-label {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
}

input,
textarea {
  background: rgba(8, 16, 24, 0.72);
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--text);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
  width: 100%;
}

input {
  height: 56px;
  padding: 0 18px;
}

.input-with-icon {
  align-items: center;
  display: flex;
  margin-bottom: 16px;
  position: relative;
}

.input-with-icon svg {
  color: var(--muted);
  left: 16px;
  pointer-events: none;
  position: absolute;
}

.input-with-icon input {
  padding-left: 46px;
}

textarea {
  min-height: 72px;
  padding: 16px;
  resize: none;
}

input:focus,
textarea:focus {
  border-color: rgba(39, 224, 193, 0.78);
  box-shadow: 0 0 0 4px rgba(39, 224, 193, 0.12);
}

.form-error,
.error-banner {
  color: var(--danger);
  font-size: 13px;
}

.primary-button,
.ghost-button,
.send-button {
  align-items: center;
  border: 0;
  border-radius: 18px;
  display: inline-flex;
  font-weight: 800;
  gap: 8px;
  justify-content: center;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--cyan), #8bf5e7);
  color: #06110f;
  height: 56px;
  margin-top: 18px;
  width: 100%;
}

.primary-button:hover,
.ghost-button:hover,
.send-button:hover,
.sticker-button:hover {
  transform: translateY(-1px);
}

.ghost-button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  color: var(--text);
}

.orb {
  border-radius: 999px;
  filter: blur(28px);
  height: 210px;
  opacity: 0.35;
  position: absolute;
  width: 210px;
}

.orb-cyan {
  background: var(--cyan);
  left: -20px;
  top: 20%;
}

.orb-amber {
  background: var(--amber);
  right: 80px;
  top: 12%;
}

.chat-frame {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 48px);
  margin: 24px auto;
  max-width: 1240px;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.chat-header,
.chat-layout,
.conversation-panel,
.user-sidebar,
.room-tools {
  border: 1px solid var(--line);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.24);
}

.chat-header {
  align-items: center;
  background: var(--panel);
  border-radius: 28px 28px 0 0;
  display: flex;
  justify-content: space-between;
  padding: 22px 24px;
}

.chat-header h1 {
  font-size: 28px;
  letter-spacing: -0.04em;
  margin: 6px 0 0;
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 12px;
}

.connection-badge,
.current-name {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  gap: 7px;
  min-height: 36px;
  padding: 0 13px;
}

.connection-badge.connected {
  color: var(--cyan);
}

.connection-badge.disconnected {
  color: var(--danger);
}

.ghost-button {
  min-height: 38px;
  padding: 0 14px;
}

.chat-layout {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 0 0 28px 28px;
  display: grid;
  flex: 1;
  grid-template-columns: 260px minmax(0, 1fr) 320px;
  min-height: 0;
}

.user-sidebar {
  background: var(--panel-strong);
  border-width: 0 1px 0 0;
  padding: 22px;
}

.sidebar-title {
  align-items: center;
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

.sidebar-title strong {
  color: var(--cyan);
  margin-left: auto;
}

.user-list {
  display: grid;
  gap: 10px;
}

.user-pill {
  align-items: center;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid transparent;
  border-radius: 16px;
  color: var(--muted);
  display: flex;
  gap: 10px;
  min-height: 46px;
  padding: 0 13px;
}

.user-pill svg {
  color: var(--cyan);
}

.user-pill.current {
  border-color: rgba(39, 224, 193, 0.45);
  color: var(--text);
}

.user-pill em {
  color: var(--amber);
  font-size: 12px;
  font-style: normal;
  margin-left: auto;
}

.conversation-panel {
  background: rgba(8, 16, 24, 0.48);
  border-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.room-tools {
  background: var(--panel-strong);
  border-width: 0 0 0 1px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
  overflow-y: auto;
  padding: 18px;
}

.tool-card {
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035)),
    rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  padding: 16px;
}

.tool-heading {
  align-items: center;
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.tool-heading.compact {
  justify-content: space-between;
}

.tool-heading svg {
  color: var(--amber);
}

.tool-heading h2 {
  font-size: 16px;
  margin: 0;
}

.tool-heading p,
.tool-note {
  color: var(--muted);
  font-size: 12px;
  margin: 2px 0 0;
}

.random-actions {
  display: grid;
  gap: 10px;
}

.random-actions button,
.rps-actions button {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  min-height: 50px;
  padding: 0 13px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.rps-actions {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
}

.rps-actions button {
  font-size: 13px;
  justify-content: center;
  min-height: 44px;
  padding: 0 8px;
}

.random-actions button:hover,
.rps-actions button:hover,
.board-action:hover,
.gomoku-cell:hover:not(:disabled) {
  transform: translateY(-1px);
}

.random-actions button:hover,
.rps-actions button:hover {
  background: rgba(39, 224, 193, 0.12);
  border-color: rgba(39, 224, 193, 0.32);
}

.random-actions strong {
  color: var(--cyan);
  font-size: 12px;
}

.gomoku-actions {
  align-items: center;
  display: flex;
  gap: 8px;
}

.board-action {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  color: var(--text);
  display: inline-flex;
  gap: 5px;
  height: 34px;
  justify-content: center;
  padding: 0 10px;
  transition: transform 160ms ease, background 160ms ease;
}

.board-action.icon-only {
  padding: 0;
  width: 34px;
}

.gomoku-board {
  aspect-ratio: 1;
  background:
    linear-gradient(90deg, rgba(16, 24, 32, 0.44) 1px, transparent 1px),
    linear-gradient(rgba(16, 24, 32, 0.44) 1px, transparent 1px),
    linear-gradient(135deg, #e7bc73, #b47a39);
  background-size: calc(100% / 15) calc(100% / 15);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(15, 1fr);
  margin-top: 12px;
  overflow: hidden;
  padding: 6px;
}

.gomoku-cell {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 999px;
  display: inline-flex;
  justify-content: center;
  min-width: 0;
  padding: 0;
}

.gomoku-cell span {
  border-radius: 999px;
  display: block;
  height: 72%;
  width: 72%;
}

.gomoku-cell.black span {
  background: radial-gradient(circle at 30% 26%, #777, #050505 62%);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
}

.gomoku-cell.white span {
  background: radial-gradient(circle at 32% 28%, #fff, #d9d9d9 68%);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.gomoku-players {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr 1fr;
  margin-top: 12px;
}

.gomoku-players span {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  padding: 8px 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-note {
  line-height: 1.45;
  margin-top: 10px;
}

.error-banner {
  background: rgba(255, 107, 107, 0.1);
  border-bottom: 1px solid rgba(255, 107, 107, 0.18);
  padding: 10px 18px;
}

.message-list {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
  overflow-y: auto;
  padding: 24px;
}

.message-row {
  align-self: flex-start;
  max-width: min(680px, 78%);
}

.message-row.mine {
  align-self: flex-end;
}

.message-meta {
  color: var(--muted);
  display: flex;
  font-size: 12px;
  gap: 10px;
  margin: 0 0 6px 4px;
}

.message-row p {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--line);
  border-radius: 18px 18px 18px 5px;
  margin: 0;
  padding: 13px 15px;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-row.mine p {
  background: linear-gradient(135deg, rgba(39, 224, 193, 0.95), rgba(139, 245, 231, 0.92));
  border-color: transparent;
  border-radius: 18px 18px 5px 18px;
  color: #06110f;
}

.message-row.sticker-message p,
.message-row.mine.sticker-message p {
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
  color: var(--text);
  font-size: 44px;
  line-height: 1;
  padding: 14px 16px;
}

.system-message {
  align-self: center;
  background: rgba(255, 180, 92, 0.12);
  border: 1px solid rgba(255, 180, 92, 0.2);
  border-radius: 999px;
  color: #ffd5a5;
  font-size: 12px;
  padding: 6px 12px;
}

.empty-messages {
  align-items: center;
  color: var(--muted);
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.empty-messages strong {
  color: var(--text);
  font-size: 24px;
}

.composer {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.025)),
    rgba(8, 16, 24, 0.5);
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px;
}

.sticker-toolbar {
  align-items: center;
  display: flex;
  gap: 12px;
  min-width: 0;
}

.sticker-toolbar > span {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 700;
  gap: 6px;
}

.sticker-list {
  display: flex;
  gap: 8px;
  min-width: 0;
  overflow-x: auto;
  padding: 2px 2px 4px;
}

.sticker-button {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  color: var(--text);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 22px;
  height: 42px;
  justify-content: center;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
  width: 46px;
}

.sticker-button:hover {
  background: rgba(39, 224, 193, 0.14);
  border-color: rgba(39, 224, 193, 0.42);
}

.composer-row {
  align-items: flex-end;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) 112px;
}

.send-button {
  background: var(--amber);
  color: #1f1305;
  min-height: 54px;
}

.send-button:disabled,
.sticker-button:disabled,
.composer textarea:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.mobile-users {
  display: none;
}

@media (max-width: 860px) {
  .entry-hero {
    grid-template-columns: 1fr;
    padding: 40px 18px;
  }

  .entry-copy h1 {
    font-size: 44px;
  }

  .chat-frame {
    height: 100vh;
    margin: 0;
    padding: 0;
  }

  .chat-header {
    align-items: flex-start;
    border-radius: 0;
    flex-direction: column;
    gap: 14px;
  }

  .header-actions {
    flex-wrap: wrap;
  }

  .chat-layout {
    border-radius: 0;
    grid-template-columns: 1fr;
    overflow-y: auto;
  }

  .user-sidebar {
    display: none;
  }

  .room-tools {
    border-width: 1px 0 0;
    overflow: visible;
  }

  .gomoku-board {
    max-width: 320px;
  }

  .mobile-users {
    background: var(--panel-strong);
    border-bottom: 1px solid var(--line);
    display: block;
    padding: 10px 18px;
  }

  .message-row {
    max-width: 92%;
  }

  .composer-row {
    grid-template-columns: 1fr;
  }

  .sticker-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }
}