:root {
  --ink: #f7fbff;
  --body: #dce7f3;
  --muted: #8ea4b8;
  --paper: #071018;
  --white: #fff;
  --blue: #27b6ff;
  --aqua: #46f0d1;
  --gold: #ffd166;
  --line: rgba(158, 220, 255, 0.18);
  --dark: #020407;
  --panel: rgba(9, 18, 30, 0.76);
  --panel-strong: rgba(13, 29, 45, 0.9);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  max-width: 100%;
  overflow-x: hidden;
  color: var(--body);
  background:
    radial-gradient(circle at 20% 8%, rgba(39, 182, 255, 0.22), transparent 30%),
    radial-gradient(circle at 82% 18%, rgba(70, 240, 209, 0.14), transparent 28%),
    linear-gradient(135deg, #020407 0%, #08131d 44%, #111827 100%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.45;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 86%);
}

button, input, textarea, select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

a {
  color: var(--aqua);
  text-decoration: none;
}

.app-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  min-height: 58px;
  padding: 9px max(18px, calc((100vw - 1180px) / 2));
  background: rgba(2, 7, 12, 0.78);
  border-bottom: 1px solid rgba(158, 220, 255, 0.16);
  backdrop-filter: saturate(180%) blur(20px);
}

.brand {
  color: #fff;
  font-weight: 800;
}

.app-topbar nav {
  display: flex;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.app-topbar nav button,
.session-button,
.view-head button,
.tool-grid button,
.publish-actions button,
#loginSubmit,
#sendCode,
.ghost-button {
  min-height: 34px;
  border-radius: 999px;
  padding: 0 14px;
  color: var(--body);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.app-topbar nav button.active,
.session-button,
.tool-grid button,
#createPost,
#loginSubmit {
  color: #031018;
  background: linear-gradient(135deg, var(--aqua), var(--blue));
  box-shadow: 0 10px 32px rgba(39, 182, 255, 0.24);
}

#sendCode:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.experience-shell {
  display: grid;
  grid-template-columns: minmax(280px, 0.34fr) minmax(0, 0.66fr);
  gap: 18px;
  width: min(1200px, calc(100% - 36px));
  margin: 24px auto 54px;
}

.left-panel,
.workspace,
dialog {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 32px 100px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(24px);
}

.left-panel {
  position: sticky;
  top: 74px;
  align-self: start;
  padding: 26px;
  overflow: hidden;
  min-height: 690px;
}

.left-panel::after {
  content: "";
  display: block;
  height: 250px;
  margin: 24px -26px -26px;
  background:
    linear-gradient(to top, rgba(7, 16, 24, 0.18), rgba(7, 16, 24, 0.2)),
    url("assets/hero-ai-social-future-2026-06-09.png") center / cover no-repeat;
  opacity: 0.9;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--aqua);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1, h2, h3, p { letter-spacing: 0; }

h1 {
  margin: 0;
  color: #fff;
  font-size: 62px;
  line-height: 0.98;
}

h2 {
  margin: 0;
  color: #fff;
  font-size: 40px;
  line-height: 1.06;
}

.left-panel > p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--body);
  font-size: 18px;
}

.flow-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 24px;
}

.flow-map span {
  min-height: 38px;
  border: 1px solid rgba(70, 240, 209, 0.24);
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: #ebfbff;
  background: rgba(255, 255, 255, 0.07);
  font-weight: 800;
}

.status-card {
  display: grid;
  gap: 6px;
  margin-top: 22px;
  border-radius: 8px;
  padding: 16px;
  color: #fff;
  background: linear-gradient(135deg, rgba(39, 182, 255, 0.2), rgba(70, 240, 209, 0.09)), rgba(0, 0, 0, 0.36);
  border: 1px solid rgba(70, 240, 209, 0.18);
}

.status-card span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.workspace {
  min-width: 0;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025)),
    rgba(5, 10, 16, 0.72);
}

.view { display: none; }
.view.active { display: block; }

.view-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.view-subtitle {
  max-width: 620px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.feed-list,
.conversation-list,
.profile-grid,
.activity-grid {
  display: grid;
  gap: 12px;
}

.post-card,
.conversation-card,
.profile-grid article,
.activity-grid article,
.tool-grid article,
.publish-box,
.result-panel {
  border: 1px solid rgba(29, 29, 31, 0.12);
  border-radius: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--line);
}

.post-card header,
.conversation-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.post-header-meta {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.post-header-meta > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.comment-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  border: 0;
  border-radius: 999px;
  padding: 0 12px;
  color: #071018;
  background: linear-gradient(135deg, var(--aqua), var(--blue));
  box-shadow: 0 10px 22px rgba(45, 212, 191, 0.22);
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}

.post-card strong,
.conversation-card strong {
  font-size: 18px;
}

.post-card p,
.conversation-card p,
.profile-grid p,
.activity-grid p,
.result-panel {
  color: var(--muted);
  font-size: 15px;
}

.post-images {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.post-images img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  background: var(--paper);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag-row span {
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--body);
  background: rgba(255, 255, 255, 0.08);
  font-size: 12px;
  font-weight: 700;
}

.action-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 0;
  margin: 14px -16px -16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.035);
}

.action-row button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 42px;
  border-radius: 0;
  padding: 0 8px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.78);
  background: transparent;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.action-row button:last-child {
  border-right: 0;
}

.action-row .action-comment {
  color: #071018;
  background: linear-gradient(135deg, var(--aqua), var(--blue));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.action-row button:hover,
.action-row button:focus-visible {
  color: #071018;
  background: rgba(70, 240, 209, 0.82);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.ai-console {
  display: grid;
  gap: 12px;
}

.ai-command-panel {
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background:
    linear-gradient(135deg, rgba(70, 240, 209, 0.12), rgba(39, 182, 255, 0.08)),
    rgba(2, 7, 12, 0.42);
}

.ai-mode-row,
.ai-command-actions,
.ai-capability-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ai-mode-row button,
.media-button,
#runAiCommand,
.ai-media-item button {
  min-height: 34px;
  border-radius: 999px;
  padding: 0 13px;
  color: var(--body);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 800;
}

.ai-mode-row button.active,
#runAiCommand {
  color: #031018;
  background: linear-gradient(135deg, var(--aqua), var(--blue));
  box-shadow: 0 10px 32px rgba(39, 182, 255, 0.24);
}

#aiInput {
  min-height: 176px;
  font-size: 17px;
}

.media-button {
  position: relative;
  display: inline-grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(70, 240, 209, 0.18);
  cursor: pointer;
}

.media-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.ai-media-list {
  display: grid;
  gap: 8px;
  min-height: 42px;
}

.ai-media-empty {
  margin: 0;
  border: 1px dashed rgba(158, 220, 255, 0.2);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  font-size: 14px;
}

.ai-media-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(158, 220, 255, 0.16);
  border-radius: 8px;
  padding: 9px 10px;
  background: rgba(255, 255, 255, 0.055);
}

.ai-media-item strong {
  color: var(--aqua);
  font-size: 13px;
}

.ai-media-item span {
  min-width: 0;
  overflow: hidden;
  color: var(--body);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai-media-item button {
  min-height: 28px;
  padding: 0 10px;
  color: var(--blue);
}

.ai-capability-strip {
  border: 1px solid rgba(158, 220, 255, 0.12);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.045);
}

.ai-capability-strip span {
  border-radius: 999px;
  padding: 7px 10px;
  color: #effbff;
  background: rgba(255, 255, 255, 0.07);
  font-size: 13px;
  font-weight: 800;
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  color: #f7fbff;
  background: rgba(255, 255, 255, 0.08);
}

textarea::placeholder,
input::placeholder {
  color: rgba(220, 231, 243, 0.48);
}

select {
  appearance: none;
  background:
    linear-gradient(45deg, transparent 50%, rgba(220, 231, 243, 0.8) 50%) right 16px center / 7px 7px no-repeat,
    rgba(255, 255, 255, 0.08);
}

textarea {
  min-height: 132px;
  resize: vertical;
}

.tool-grid button,
.publish-actions button {
  margin-top: 12px;
}

.publish-box {
  display: grid;
  gap: 12px;
}

.publish-meta-grid {
  display: grid;
  grid-template-columns: minmax(150px, 0.36fr) minmax(0, 0.64fr);
  gap: 10px;
}

.publish-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.result-panel {
  margin-top: 14px;
  white-space: pre-wrap;
}

.result-panel:empty {
  display: none;
}

.profile-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.profile-command {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 12px;
  margin-bottom: 12px;
}

.identity-console,
.signal-console,
.capability-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.035)),
    rgba(4, 10, 17, 0.72);
}

.identity-console {
  min-height: 238px;
  padding: 20px;
}

.identity-console::before,
.capability-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--aqua), var(--blue), var(--gold));
}

.profile-identity-main {
  display: grid;
  gap: 16px;
}

.profile-avatar {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #061018;
  background: linear-gradient(135deg, var(--aqua), var(--gold));
  font-size: 28px;
  font-weight: 900;
}

.profile-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.profile-title-row h3 {
  margin: 0;
  color: #fff;
  font-size: 28px;
}

.profile-badge {
  min-height: 30px;
  border-radius: 999px;
  padding: 6px 10px;
  color: #071018;
  background: var(--aqua);
  font-size: 12px;
  font-weight: 900;
}

.profile-stats,
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.profile-stats span,
.metric-grid span {
  display: grid;
  gap: 3px;
  min-height: 66px;
  border: 1px solid rgba(158, 220, 255, 0.15);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.055);
  color: var(--muted);
  font-size: 12px;
}

.profile-stats strong,
.metric-grid strong {
  color: #fff;
  font-size: 22px;
}

.profile-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.profile-actions button {
  min-height: 34px;
  border-radius: 999px;
  padding: 0 12px;
  color: #061018;
  background: linear-gradient(135deg, var(--aqua), var(--blue));
  font-weight: 800;
}

.signal-console {
  min-height: 238px;
  padding: 18px;
}

.radar-orbit {
  position: relative;
  width: min(168px, 72%);
  aspect-ratio: 1;
  margin: 6px auto 18px;
  border: 1px solid rgba(70, 240, 209, 0.34);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(70, 240, 209, 0.9) 0 4px, transparent 5px),
    radial-gradient(circle, rgba(39, 182, 255, 0.16), transparent 55%);
}

.radar-orbit::before,
.radar-orbit::after,
.radar-orbit span {
  content: "";
  position: absolute;
  inset: 18%;
  border: 1px solid rgba(158, 220, 255, 0.2);
  border-radius: 50%;
}

.radar-orbit::after {
  inset: 34%;
}

.radar-orbit span:nth-child(1) {
  inset: 12%;
  border-color: rgba(255, 209, 102, 0.32);
}

.radar-orbit span:nth-child(2) {
  width: 8px;
  height: 8px;
  inset: 32% auto auto 68%;
  background: var(--gold);
  border: 0;
}

.radar-orbit span:nth-child(3) {
  width: 7px;
  height: 7px;
  inset: 66% auto auto 30%;
  background: var(--blue);
  border: 0;
}

.signal-list {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 12px;
  color: var(--muted);
  font-size: 13px;
}

.signal-list strong {
  color: #fff;
  font-size: 13px;
}

.profile-grid-premium {
  gap: 12px;
}

.capability-card {
  min-height: 226px;
  padding: 18px;
}

.capability-top {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.capability-top span {
  min-width: 38px;
  min-height: 38px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #061018;
  background: var(--gold);
  font-weight: 900;
}

.capability-top h3,
.signal-console h3 {
  margin: 0;
  color: #fff;
  font-size: 20px;
}

.capability-card p {
  margin: 14px 0;
}

.micro-panel {
  display: grid;
  gap: 8px;
  min-height: 70px;
  border: 1px solid rgba(158, 220, 255, 0.14);
  border-radius: 8px;
  padding: 12px;
  color: var(--body);
  background: rgba(0, 0, 0, 0.2);
  white-space: normal;
}

.micro-panel p {
  margin: 0;
  color: var(--body);
}

.micro-panel .mini-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid rgba(158, 220, 255, 0.1);
  padding-bottom: 8px;
}

.micro-panel .mini-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.micro-panel strong {
  color: #fff;
}

.safety-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.safety-actions a {
  min-height: 34px;
  border: 1px solid rgba(70, 240, 209, 0.22);
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  padding: 0 12px;
  color: var(--aqua);
  background: rgba(70, 240, 209, 0.08);
  font-weight: 800;
}

.activity-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

dialog {
  width: min(460px, calc(100% - 36px));
  padding: 0;
  color: var(--body);
  background: var(--panel-strong);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.42);
}

.login-box,
.detail-box {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 24px;
  color: var(--body);
}

#detailDialog {
  width: min(760px, calc(100% - 36px));
  max-height: min(86vh, 820px);
  overflow: auto;
}

#postDetail {
  display: grid;
  gap: 14px;
}

#postDetail .post-card {
  background: rgba(255, 255, 255, 0.065);
}

.detail-title {
  margin: 6px 0 0;
  color: #fff;
  font-size: 22px;
}

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

.comment-item {
  border: 1px solid rgba(158, 220, 255, 0.14);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(2, 7, 12, 0.48);
}

.comment-item strong {
  display: block;
  color: var(--aqua);
  font-size: 14px;
}

.comment-item p,
.comment-empty {
  margin: 6px 0 0;
  color: var(--body);
  font-size: 15px;
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--paper);
}

.code-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

small {
  color: var(--muted);
}

.ghost-button {
  color: var(--blue);
  background: rgba(0, 102, 204, 0.1);
}

@media (max-width: 860px) {
  .app-topbar {
    grid-template-columns: 1fr auto;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .session-button {
    grid-column: 2;
    grid-row: 1;
  }

  .app-topbar nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .app-topbar nav button {
    flex: 0 0 auto;
  }

  .experience-shell,
  .tool-grid,
  .publish-meta-grid,
  .profile-command,
  .profile-grid,
  .activity-grid {
    grid-template-columns: 1fr;
  }

  .left-panel {
    position: relative;
    top: auto;
  }

  .workspace {
    order: -1;
    padding: 18px;
  }

  .left-panel {
    min-height: auto;
  }

  h1 {
    font-size: 46px;
  }

  h2 {
    font-size: 32px;
  }

  .view-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .ai-mode-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .ai-capability-strip {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-mode-row button,
  .ai-capability-strip span {
    width: 100%;
    text-align: center;
  }

  .ai-command-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-command-actions .ghost-button,
  .ai-command-actions #runAiCommand {
    grid-column: 1 / -1;
  }

  .media-button,
  .ai-command-actions .ghost-button,
  .ai-command-actions #runAiCommand {
    width: 100%;
  }
}

@media (max-width: 420px) {
  dialog {
    width: calc(100% - 32px);
  }

  .login-box {
    gap: 10px;
    padding: 22px 18px 18px;
  }

  .detail-box {
    padding: 22px 16px 18px;
  }

  .login-box h2 {
    padding-right: 34px;
    font-size: 27px;
  }

  .app-topbar nav {
    gap: 4px;
  }

  .app-topbar nav button {
    min-height: 32px;
    padding: 0 8px;
  }

  .experience-shell {
    width: calc(100% - 24px);
    margin-top: 14px;
  }

  .left-panel,
  .workspace {
    padding: 16px;
  }

  .profile-stats,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .profile-title-row {
    align-items: flex-start;
    flex-direction: column;
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 29px;
  }

  .post-images {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-mode-row button,
  .media-button,
  .ai-media-item button,
  #runAiCommand {
    padding: 0 10px;
    font-size: 14px;
  }

}