@tailwind base;
@tailwind components;
@tailwind utilities;

:root {
  color-scheme: dark;
}

* {
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  background: #0a0a0a;
  color: #e8e8e8;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
  min-height: 100dvh;
}

button {
  color: inherit;
}

.card {
  background: #141414;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 1rem;
}

.btn {
  @apply inline-flex items-center justify-center rounded-xl px-4 py-2 text-sm font-medium transition;
}

.btn-primary {
  @apply btn;
  background: #e8e8e8;
  color: #0a0a0a;
}
.btn-primary:hover {
  background: #ffffff;
}

.btn-ghost {
  @apply btn;
  border: 1px solid rgba(255,255,255,0.12);
  color: #a0a0a0;
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,0.2);
  color: #e8e8e8;
}

/* 对话气泡 */
.bubble-ai {
  background: #1c1c1c;
  color: #e8e8e8;
  border-radius: 1rem 1rem 1rem 0.25rem;
}

.bubble-user {
  background: #e8e8e8;
  color: #0a0a0a;
  border-radius: 1rem 1rem 0.25rem 1rem;
  margin-left: auto;
}

/* 输入框 */
.chat-input {
  background: #1c1c1c;
  border: 1px solid rgba(255,255,255,0.1);
  color: #e8e8e8;
  border-radius: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.chat-input::placeholder {
  color: #555;
}
.chat-input:focus {
  border-color: rgba(255,255,255,0.25);
}

/* lingjing chat continue button force pure white */
.chat-page .continue-btn,
.chat-page .continue-btn:visited,
.chat-page .continue-btn:hover,
.chat-page .continue-btn:active,
.chat-page .continue-btn:focus,
.chat-page .continue-btn:disabled {
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  opacity: 1 !important;
}
.send-btn {
  background: #e8e8e8;
  color: #0a0a0a;
  border-radius: 0.875rem;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
.send-btn:disabled {
  opacity: 0.2;
}
.send-btn:not(:disabled):hover {
  opacity: 0.85;
}

/* PWA 安装提示 */
.install-hint {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: #1c1c1c;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 1rem;
  padding: 0.75rem 1.25rem;
  font-size: 0.75rem;
  color: #a0a0a0;
  white-space: nowrap;
  z-index: 50;
  animation: fadeInUp 0.4s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateX(-50%) translateY(8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}