/* ============================================================
   ری‌پلای — shared site styles (base, components, animations)
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-primary);
  font: var(--fa-body-md);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: var(--font-fa); font-feature-settings: 'ss01'; cursor: pointer; }

.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--space-6); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  border: none; border-radius: var(--radius-md);
  font: var(--fa-label); font-size: 1rem;
  padding: 12px 24px;
  transition: background var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.btn-primary { background: var(--brand-primary); color: var(--text-inverse); box-shadow: var(--shadow-glow-brand); }
.btn-primary:hover { background: var(--brand-primary-hover); }
.btn-primary:active { background: var(--brand-primary-active); }

.btn-ghost { background: transparent; color: var(--text-primary); }
.btn-ghost:hover { background: var(--ink-100); }

.btn-outline { background: var(--surface-card); color: var(--text-primary); box-shadow: inset 0 0 0 1px var(--border-default); }
.btn-outline:hover { background: var(--ink-50); }

.btn-lg { padding: 16px 32px; font-size: 1.0625rem; border-radius: var(--radius-lg); }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; border-radius: var(--radius-sm); }

/* ---------- Cards ---------- */
.card {
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
  transition: box-shadow var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}
.card-hover:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ---------- Status pills ---------- */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font: var(--fa-caption); font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 3px 12px;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill-ai      { background: var(--state-ai-bg);      color: var(--violet-700); }
.pill-live    { background: var(--state-live-bg);    color: var(--coral-700); }
.pill-human   { background: var(--state-human-bg);   color: var(--ink-700); }
.pill-success { background: var(--state-success-bg); color: var(--state-success-fg); }
.pill-warning { background: var(--state-warning-bg); color: var(--amber-600); }

.pill-live .dot { animation: pulse 1.8s var(--ease-in-out) infinite; }

/* ---------- Section chrome (marketing) ---------- */
.section { padding-block: var(--space-24); }
.section-label {
  font: var(--fa-label); color: var(--violet-600);
  background: var(--violet-50); border-radius: var(--radius-pill);
  padding: 4px 16px; display: inline-block; margin-bottom: var(--space-4);
}
.section-title { font: var(--fa-display-md); }
.section-lead  { font: var(--fa-body-lg); color: var(--text-secondary); max-width: 640px; }
.section-head-center { text-align: center; }
.section-head-center .section-lead { margin-inline: auto; }

/* ---------- Wordmark ---------- */
.wordmark { font: var(--fa-h2); font-weight: 800; letter-spacing: 0 !important; }
.wordmark .re { color: var(--violet-600); }

/* ---------- Message bubbles ---------- */
.bubble {
  border-radius: var(--radius-lg);
  padding: 10px 16px;
  font: var(--fa-body-sm);
  max-width: 85%;
  width: fit-content;
}
.bubble-in  { background: var(--surface-sunken); color: var(--text-primary); border-start-end-radius: 4px; }
.bubble-out { background: var(--brand-primary); color: var(--text-inverse); border-start-start-radius: 4px; margin-inline-start: auto; }
.bubble-ai  { background: var(--state-ai-bg); color: var(--violet-900); border: 1px dashed var(--violet-300); }

/* ---------- Typing indicator ---------- */
.typing { display: inline-flex; align-items: center; gap: 4px; }
.typing i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--violet-400); display: block;
  animation: typing 1.2s var(--ease-in-out) infinite;
}
.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }

/* ---------- Avatars (monogram-first, no stock photos) ---------- */
.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font: var(--fa-label); color: var(--text-inverse);
  background: var(--gradient-brand); flex-shrink: 0;
}
.avatar-sm { width: 30px; height: 30px; font-size: 0.75rem; }

/* ---------- Account health badge ---------- */
.health-badge {
  display: inline-flex; align-items: center; gap: var(--space-3);
  background: var(--surface-card); border: 1px solid var(--green-100);
  border-radius: var(--radius-pill); padding: 8px 18px;
  box-shadow: var(--shadow-sm);
}
.health-badge .ring {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--state-success);
  box-shadow: 0 0 0 4px var(--green-100);
  animation: pulse 2.4s var(--ease-in-out) infinite;
}
.health-badge b { font: var(--fa-caption); font-weight: 700; color: var(--state-success-fg); }
.health-badge span { font: var(--fa-caption); color: var(--text-secondary); }

/* ---------- Keyframes ---------- */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.55; transform: scale(0.85); }
}
@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30%           { transform: translateY(-4px); opacity: 1; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}