/* ── SHARED TOPBAR ─────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 62px;
  border-bottom: 1px solid var(--topbar-border);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  background: var(--topbar-bg);
  flex-shrink: 0;
  transition: background 0.35s, border-color 0.35s;
}

.topbar-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; flex-shrink: 0;
}
.topbar-logo img {
  height: 48px; width: auto;
  transition: filter 0.35s;
}
[data-theme="dark"]  .logo-light { display: none; }
[data-theme="light"] .logo-dark  { display: none; }

.topbar-actions {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}

.btn-login {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
  color: #fff; border: none; border-radius: 50px;
  padding: 8px 18px; font-family: 'Cairo', sans-serif;
  font-size: 13px; font-weight: 700;
  display: inline-flex; align-items: center; gap: 7px;
  cursor: pointer; white-space: nowrap;
  box-shadow: 0 4px 16px rgba(224,116,34,0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-login:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(224,116,34,0.5); }

.btn-ghost {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--card-border); border-radius: 50px;
  padding: 7px 15px; font-family: 'Cairo', sans-serif;
  font-size: 13px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 7px;
  cursor: pointer; white-space: nowrap; transition: all 0.2s;
}
.btn-ghost:hover { border-color: rgba(224,116,34,0.45); color: var(--teal); background: rgba(224,116,34,0.07); }

.btn-theme {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--card-bg); border: 1px solid var(--card-border);
  color: var(--text-muted); display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 15px; transition: all 0.25s; flex-shrink: 0;
}
.btn-theme:hover { border-color: rgba(224,116,34,0.4); color: var(--teal); background: rgba(224,116,34,0.08); }
[data-theme="dark"]  .icon-sun  { display: block; }
[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.btn-back {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--card-bg); border: 1px solid var(--card-border);
  color: var(--text-muted); display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 14px; transition: all 0.25s; flex-shrink: 0;
}
.btn-back:hover { border-color: rgba(224,116,34,0.4); color: var(--teal); background: rgba(224,116,34,0.08); }

/* ── SHARED INPUT WRAP ─────────────────────────────── */
.input-wrap {
  display: flex; align-items: center;
  background: var(--input-bg);
  backdrop-filter: blur(28px); -webkit-backdrop-filter: blur(28px);
  border: 1px solid var(--input-border);
  border-radius: 9999px; padding: 5px; gap: 6px;
  box-shadow: 0 0 0 1px rgba(224,116,34,0.06), 0 12px 40px rgba(0,0,0,0.3);
  transition: border-color 0.3s, box-shadow 0.3s, background 0.35s;
  direction: ltr;
}
[data-theme="light"] .input-wrap { box-shadow: 0 0 0 1px rgba(224,116,34,0.08), 0 8px 32px rgba(224,116,34,0.1); }
.input-wrap:focus-within {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(224,116,34,0.12), 0 12px 40px rgba(0,0,0,0.3), 0 0 80px rgba(224,116,34,0.14);
}

.send-btn {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  border: none; display: flex; align-items: center; justify-content: center;
  cursor: pointer; flex-shrink: 0; color: #fff; font-size: 15px;
  box-shadow: 0 4px 16px rgba(224,116,34,0.4);
  transition: transform 0.25s, box-shadow 0.25s;
}
.send-btn:hover { transform: scale(1.1); box-shadow: 0 8px 26px rgba(224,116,34,0.6); }
.send-btn.streaming {
  background: linear-gradient(135deg, #d94a3a, #a82b1d);
  box-shadow: 0 4px 16px rgba(217,74,58,0.45);
}
.send-btn.streaming:hover { box-shadow: 0 8px 26px rgba(217,74,58,0.6); }

.chat-input {
  flex: 1; background: transparent; border: none; outline: none;
  font-family: 'Cairo', sans-serif; font-size: 14.5px; color: var(--text);
  text-align: left; direction: ltr; padding: 11px 10px;
  caret-color: var(--teal);
}
.chat-input::placeholder { color: var(--text-muted); }

.voice-btn {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #F5903A, #A84E10 55%, #5C2008);
  border: 1px solid rgba(224,116,34,0.3); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 16px; transition: transform 0.25s;
  animation: pulseOrb 3s ease-in-out infinite;
}
.voice-btn:hover { transform: scale(1.1); box-shadow: 0 0 16px rgba(224,116,34,0.6); }