/* App-specific styles. Extends theme.css design tokens for community pages. */

/* =========== APP HEADER =========== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 26, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0.75rem 0;
}

.app-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-logo {
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.app-logo-text {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
}

.app-logo-cn {
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.app-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.app-nav-link {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: all 0.2s;
}

.app-nav-link:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.05);
}

.app-nav-cta {
  color: var(--bg-deep);
  background: var(--gold);
  font-weight: 600;
}

.app-nav-cta:hover {
  color: var(--bg-deep);
  background: var(--gold-soft);
}

.app-nav-logout {
  color: var(--fg-dim);
  font-size: 0.8rem;
}

/* =========== APP FOOTER =========== */
.app-footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--bg-deep);
  margin-top: 4rem;
}

/* =========== PAGE LAYOUTS =========== */
.app-page {
  min-height: calc(100vh - 60px);
  padding: 2rem 0;
}

.page-title {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

/* =========== CARDS =========== */
.card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.3s;
}

.card:hover {
  border-color: var(--accent-border);
}

.card-title {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--fg);
}

.card-meta {
  font-size: 0.8rem;
  color: var(--fg-dim);
  margin-bottom: 0.75rem;
}

.card-body {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* =========== GRIDS =========== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

/* =========== STATS =========== */
.stats-row {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  min-width: 150px;
  flex: 1;
}

.stat-value {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-dim);
  margin-top: 0.25rem;
}

/* =========== FORMS =========== */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.form-input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--bg-card-alt);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--fg);
  font-size: 0.95rem;
  font-family: var(--sans);
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px var(--gold-glow);
}

.form-input::placeholder {
  color: var(--fg-dim);
}

textarea.form-input {
  min-height: 80px;
  resize: vertical;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--fg-dim);
  margin-top: 0.3rem;
}

/* =========== BUTTONS =========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--sans);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--gold-soft);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--fg);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-danger {
  background: rgba(220, 50, 50, 0.15);
  color: #ef5656;
  border: 1px solid rgba(220, 50, 50, 0.2);
}

.btn-danger:hover {
  background: rgba(220, 50, 50, 0.25);
}

.btn-sm {
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
}

/* =========== ALERTS =========== */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.alert-error {
  background: rgba(220, 50, 50, 0.12);
  border: 1px solid rgba(220, 50, 50, 0.2);
  color: #ef5656;
}

.alert-success {
  background: rgba(50, 180, 80, 0.12);
  border: 1px solid rgba(50, 180, 80, 0.2);
  color: #50c878;
}

/* =========== TAGS =========== */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--fg-muted);
}

.tag-gold {
  border-color: var(--accent-border);
  color: var(--gold);
  background: var(--gold-glow);
}

/* =========== MEMBER LIST =========== */
.member-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.member-item:last-child {
  border-bottom: none;
}

.member-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gold-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 700;
  color: var(--gold);
  font-size: 1rem;
  flex-shrink: 0;
}

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

.member-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--fg);
}

.member-detail {
  font-size: 0.78rem;
  color: var(--fg-dim);
}

/* =========== SECTION DIVIDER =========== */
.section-divider {
  width: 40px;
  height: 2px;
  background: var(--accent-border);
  margin: 2rem 0;
}

/* =========== AUTH PAGES =========== */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  background: radial-gradient(ellipse at 50% 30%, #1f1f4a 0%, var(--bg-deep) 70%);
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
}

.auth-title {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  text-align: center;
  margin-bottom: 0.25rem;
}

.auth-subtitle {
  text-align: center;
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-bottom: 2rem;
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--fg-dim);
}

.auth-footer a {
  color: var(--gold);
  text-decoration: none;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* =========== PROFILE =========== */
.profile-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.profile-avatar-lg {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gold-glow);
  border: 2px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gold);
  flex-shrink: 0;
}

.profile-info h2 {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
}

.profile-info .member-detail {
  margin-top: 0.25rem;
}

/* =========== REFERRAL BANNER =========== */
.referral-banner {
  background: var(--gold-glow);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.referral-banner h3 {
  font-family: var(--serif);
  color: var(--gold);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.referral-link-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.referral-link-input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--accent-border);
  border-radius: 6px;
  color: var(--fg);
  font-size: 0.82rem;
  font-family: monospace;
}

/* =========== CIRCLE DETAIL =========== */
.circle-header {
  margin-bottom: 2rem;
}

.circle-header h1 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.circle-topic {
  display: inline-block;
  margin-bottom: 0.75rem;
}

/* =========== 404 =========== */
.page-404 {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
}

.page-404 h1 {
  font-family: var(--serif);
  font-size: 4rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.page-404 p {
  color: var(--fg-muted);
  margin-bottom: 2rem;
}

/* =========== GRAPH =========== */
.graph-container {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.graph-container svg {
  display: block;
}

.graph-legend {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  color: var(--fg-dim);
}

/* =========== RESPONSIVE =========== */
@media (max-width: 768px) {
  .app-nav {
    gap: 0.1rem;
  }
  .app-nav-link {
    padding: 0.4rem 0.5rem;
    font-size: 0.8rem;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }
  .stats-row {
    gap: 0.75rem;
  }
  .stat-card {
    min-width: 120px;
  }
  .profile-header {
    flex-direction: column;
    text-align: center;
  }
  .referral-link-box {
    flex-direction: column;
  }
}