html,
body,
.gradio-container {
  background: #0a0f1f !important;
  color: #e5e7eb !important;
}

:root {
  color-scheme: dark;
}

:root {
  --bg-main: #0a0f1f;
  --bg-panel: #0f172a;
  --bg-card: #111827;
  --bg-elevated: #1e293b;
  --bg-input: #0f172a;

  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --accent: #22c55e;
  --accent-strong: #16a34a;

  --border-subtle: rgba(148, 163, 184, 0.18);

  --radius-lg: 18px;
  --radius-md: 10px;

  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.55);
  --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.45);
}

.app-row {
  max-width: 1180px;
  margin: 50px auto;
  padding: 28px;
  border-radius: 26px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-soft);
}

.title-text h3,
.title-text h1 {
  color: var(--text-primary);
  font-weight: 600;
}

#chatbot {
  background: var(--bg-panel) !important;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  height: 520px !important;
  box-shadow: var(--shadow-card);
}

#chatbot .message.user {
  background: rgba(255, 255, 255, 0.05) !important;
  color: var(--text-primary) !important;
}

#chatbot .message.bot {
  background: rgba(20, 25, 40, 0.8) !important;
  color: var(--text-secondary) !important;
}

#chat-input {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

#chat-input textarea {
  width: 100%;
  background: #020617;
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.95rem;
  color: #e5e7eb;
  outline: none;
  box-shadow: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    background-color 0.15s ease;
}

#chat-input textarea::placeholder {
  color: rgba(148, 163, 184, 0.8);
}

#chat-input textarea:focus {
  background-color: #020617;
  border-color: #585858; /* soft green */
  box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.35);
}

.button-row {
  margin-top: 12px;
  gap: 12px;
}

#send-btn {
  background: linear-gradient(135deg, #1ed760, #1abc5b);
  border: none;
  color: white;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.65rem 1.8rem;
  font-size: 0.95rem;

  box-shadow: 0 4px 14px rgba(30, 215, 96, 0.25); /* subtle shadow */
  transition: transform 0.12s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

#send-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(30, 215, 96, 0.32);
  filter: brightness(1.05);
}

#send-btn:active {
  transform: scale(0.97);
  box-shadow: 0 3px 12px rgba(30, 215, 96, 0.2);
}

#clear-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 0.65rem 1.8rem;
}

#clear-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.about-card {
  background: var(--bg-panel) !important;
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-card);
  color: var(--text-secondary) !important;
}

.about-card h3 {
  color: var(--text-primary);
  margin-bottom: 10px;
}

.about-card li::marker {
  color: var(--accent);
}

@media (max-width: 768px) {
  .app-row {
    margin: 20px;
    padding: 18px;
  }
}