/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0c0c0c;
  --surface: #161616;
  --card: #222222;
  --border: #404040;
  --text: #ffffff;
  --text-muted: #b5b5b5;
  --accent: #ffd700;
  --accent-hover: #ffcc00;
  --danger: #ff5c5c;
  --radius: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-full: 9999px;
  --focus: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}


html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  box-shadow: var(--focus);
}

button {
  cursor: pointer;
}

a {
  color: var(--accent);
}

/* ===== Utilities ===== */
.hidden { display: none !important; }
.error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 0.75rem;
  text-align: center;
}

/* ===== Verified badge (single visual) ===== */
.user-name {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-width: 0;
  max-width: 100%;
  font-weight: 700;
  line-height: 1.2;
  vertical-align: middle;
}

.user-name-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.verified-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  line-height: 0;
  vertical-align: middle;
}

.verified-badge svg {
  display: block;
  width: 10px;
  height: 10px;
}

.verified-badge path {
  fill: none;
  stroke: #ffffff;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ===== Screens ===== */
.screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Auth ===== */
.auth-card {
  width: 100%;
  max-width: 400px;
  margin: 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.25rem 1.75rem;
  text-align: center;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.logo i {
  width: 36px;
  height: 36px;
  stroke: var(--text);
}

.logo h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px;
}

.tab {
  flex: 1;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  color: var(--text-muted);
  font-weight: 600;
  transition: background 0.15s, color 0.15s;
}

.tab.active {
  background: var(--text);
  color: var(--bg);
}

.input-group {
  text-align: left;
  margin-bottom: 1rem;
}

.input-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.input-group input,
.search-input,
.comment-input {
  width: 100%;
  padding: 0.8rem 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.15s;
}

.input-group input:focus,
.search-input:focus,
.comment-input:focus {
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

.btn.primary {
  background: var(--text);
  color: var(--bg);
}

.btn.primary:hover:not(:disabled) {
  opacity: 0.92;
}

.btn.primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn.outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn.outline:hover {
  background: var(--surface);
}

.btn.icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.btn.icon:hover {
  background: var(--surface);
  color: var(--text);
}

#auth-btn.primary {
  width: 100%;
  margin-top: 0.35rem;
}

/* ===== Main Layout ===== */
#main-screen {
  flex-direction: column;
  align-items: stretch;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.25rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  min-width: 0;
}

.brand i {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.current-user {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  max-width: min(220px, 46vw);
  color: var(--text);
  font-size: 0.9rem;
  padding: 0.35rem 0.55rem;
  border-radius: var(--radius-sm);
}

.current-user:hover {
  background: var(--surface);
}

.current-user .user-name {
  font-weight: 600;
}

.layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  max-width: 920px;
  margin: 0 auto;
  width: 100%;
  min-height: calc(100vh - 58px);
}

.sidebar {
  padding: 1.25rem 0.85rem;
  border-right: 1px solid var(--border);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.3rem;
  transition: background 0.15s, color 0.15s;
}

.nav-item:hover {
  background: var(--surface);
  color: var(--text);
}

.nav-item.active {
  background: var(--text);
  color: var(--bg);
}

.nav-item i {
  width: 20px;
  height: 20px;
}

.feed {
  padding: 1.25rem;
  max-width: 620px;
  width: 100%;
  min-width: 0;
}

.compose-card,
.post-card,
.profile-card,
.search-card,
.user-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.compose-card {
  padding: 1.1rem 1.15rem;
  margin-bottom: 1.15rem;
}

.compose-card textarea {
  width: 100%;
  resize: none;
  background: transparent;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.45;
  min-height: 80px;
}

.compose-card textarea::placeholder {
  color: var(--text-muted);
}

.compose-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.7rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--border);
}

#char-count {
  font-size: 0.85rem;
  color: var(--text-muted);
}

#post-btn {
  width: auto;
  padding: 0.5rem 1.2rem;
  font-size: 0.9rem;
}

.posts-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
}

.post-card {
  padding: 1.1rem 1.15rem;
}

.post-card:hover {
  border-color: #3d4554;
}

.post-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
  min-width: 0;
}

.avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  flex-shrink: 0;
}

.post-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.post-author {
  display: flex;
  align-items: center;
  min-width: 0;
  cursor: pointer;
  color: var(--text);
  background: none;
  padding: 0;
  text-align: left;
  font-size: 0.95rem;
}

.post-author:hover .user-name-text {
  text-decoration: underline;
}

.post-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-body {
  font-size: 1rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 0.85rem;
}

.post-actions {
  display: flex;
  gap: 0.5rem;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}

.action-btn:hover {
  background: var(--surface);
  color: var(--text);
}

.action-btn.liked {
  color: #ff6b81;
}

.action-btn i {
  width: 18px;
  height: 18px;
}

.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
}

.empty-state i {
  width: 44px;
  height: 44px;
  margin-bottom: 0.85rem;
  opacity: 0.55;
}

/* Comments */
.comments-section {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.comments-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
}

.comment-item {
  display: flex;
  gap: 0.65rem;
  padding: 0.7rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  min-width: 0;
}

.comment-avatar {
  width: 32px;
  height: 32px;
  font-size: 0.8rem;
}

.comment-content {
  min-width: 0;
  flex: 1;
}

.comment-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem 0.45rem;
  min-width: 0;
  margin-bottom: 0.2rem;
}

.comment-meta .user-name {
  font-size: 0.9rem;
}

.comment-meta span {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.comment-body {
  font-size: 0.92rem;
  word-break: break-word;
}

.comment-form {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.comment-input {
  flex: 1;
}

.comment-submit {
  flex-shrink: 0;
  padding: 0.65rem 0.95rem;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
}

.comment-submit:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.comment-loading {
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 0.4rem 0.2rem;
}

/* Profile */
.profile-card {
  padding: 1.25rem;
}

.profile-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  min-width: 0;
}

.profile-avatar {
  width: 64px;
  height: 64px;
  font-size: 1.45rem;
}

.profile-info {
  min-width: 0;
  flex: 1;
}

.profile-display {
  font-size: 1.25rem;
}

.profile-handle {
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-bio {
  margin-top: 0.55rem;
  font-size: 0.95rem;
  word-break: break-word;
}

.profile-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 0.7rem;
}

.stat-btn {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 0.15rem 0;
  border-radius: 4px;
}

.stat-btn strong {
  color: var(--text);
  margin-right: 0.2rem;
}

.stat-btn:hover {
  text-decoration: underline;
}

.profile-actions {
  margin-top: 0.9rem;
}

/* Search & user cards */
.search-card {
  padding: 0.9rem;
  margin-bottom: 0.85rem;
}

.user-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.85rem;
  text-align: left;
  color: inherit;
}

.user-card:hover {
  border-color: #3d4554;
}

.user-card-meta {
  min-width: 0;
  flex: 1;
}

.user-card-handle {
  color: var(--text-muted);
  font-size: 0.82rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Modal */
.modal-root {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(8, 10, 14, 0.72);
}

.modal-card {
  width: min(440px, 100%);
  max-height: min(80vh, 640px);
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 1.05rem;
}

.modal-body {
  overflow: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.mobile-nav {
  display: none;
}

@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
    min-height: calc(100vh - 58px - 64px);
  }

  .sidebar {
    display: none;
  }

  .feed {
    padding: 0.9rem 0.85rem 5.5rem;
  }

  .topbar {
    padding: 0.65rem 0.85rem;
  }

  .brand span {
    font-size: 1rem;
  }

  .mobile-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 60;
    background: var(--bg);
    border-top: 1px solid var(--border);
    padding: 0.35rem 0.4rem calc(0.35rem + env(safe-area-inset-bottom));
  }

  .mobile-nav .nav-item {
    flex-direction: column;
    gap: 0.15rem;
    margin: 0;
    font-size: 0.7rem;
    padding: 0.45rem 0.2rem;
    border-radius: var(--radius-sm);
  }

  .profile-header {
    flex-direction: column;
  }

  .comment-form {
    flex-direction: column;
    align-items: stretch;
  }
}

.site-footer {
  color: var(--text-muted);
  text-align: center;
}