/* CyberBuddy — ChildSafe Online */

:root {
  --bg-main: #FFF8F0;
  --bg-chat: #FFFFFF;
  --bg-bubble-ai: #F0F7FF;
  --bg-bubble-user: #E8F5E9;
  --text-main: #2D3436;
  --text-secondary: #636E72;
  --accent-blue: #4A90D9;
  --accent-green: #27AE60;
  --accent-orange: #F39C12;
  --accent-pink: #E84393;
  --accent-purple: #6C5CE7;
  --accent-red: #E74C3C;
  --shadow-soft: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.08);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: 'Nunito', sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  overflow: hidden;
}

/* === FLOATING DECORATIONS === */
.floating-shapes {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.floating-shapes .shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.12;
  animation: floatShape 20s ease-in-out infinite;
}
.shape:nth-child(1) { width:180px;height:180px;background:var(--accent-blue);top:-40px;right:10%;animation-delay:0s; }
.shape:nth-child(2) { width:120px;height:120px;background:var(--accent-pink);bottom:10%;left:-30px;animation-delay:-5s; }
.shape:nth-child(3) { width:200px;height:200px;background:var(--accent-orange);top:40%;right:-60px;animation-delay:-10s;border-radius:30%; }
.shape:nth-child(4) { width:90px;height:90px;background:var(--accent-green);top:20%;left:5%;animation-delay:-15s; }
.shape:nth-child(5) { width:150px;height:150px;background:var(--accent-purple);bottom:-30px;right:30%;animation-delay:-8s;border-radius:40%; }

@keyframes floatShape {
  0%,100% { transform: translate(0,0) rotate(0deg); }
  25% { transform: translate(20px,-30px) rotate(5deg); }
  50% { transform: translate(-10px,20px) rotate(-3deg); }
  75% { transform: translate(15px,10px) rotate(4deg); }
}

/* === MAIN LAYOUT === */
.app-container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 900px;
  margin: 0 auto;
  padding: 12px;
}

/* === HEADER === */
.header {
  text-align: center;
  padding: 10px 0 8px;
  flex-shrink: 0;
}
.header h1 {
  font-family: 'Baloo 2', cursive;
  font-size: 26px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* === PERSONA SELECTOR === */
.persona-bar {
  display: flex;
  gap: 8px;
  padding: 8px 0;
  overflow-x: auto;
  flex-shrink: 0;
  justify-content: center;
  flex-wrap: wrap;
}
.persona-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 2px solid transparent;
  border-radius: 50px;
  background: white;
  cursor: pointer;
  font-family: 'Nunito', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  box-shadow: var(--shadow-soft);
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  white-space: nowrap;
  flex-shrink: 0;
}
.persona-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.persona-btn.active { border-color: var(--persona-color); color: var(--persona-color); background: var(--persona-bg); transform: translateY(-2px); }
.persona-avatar { font-size: 20px; line-height: 1; }

/* === CHAT AREA === */
.chat-container {
  flex: 1;
  background: var(--bg-chat);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: #ddd; border-radius: 3px; }

/* === MESSAGES === */
.message {
  display: flex;
  gap: 10px;
  max-width: 85%;
  animation: msgIn 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.message.ai { align-self: flex-start; }
.message.user { align-self: flex-end; flex-direction: row-reverse; }

@keyframes msgIn {
  from { opacity:0; transform: translateY(12px) scale(0.96); }
  to { opacity:1; transform: translateY(0) scale(1); }
}

.msg-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: var(--shadow-soft);
}
.message.ai .msg-avatar { background: var(--persona-bg, #F0F7FF); }
.message.user .msg-avatar { background: var(--bg-bubble-user); }

.msg-bubble {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.6;
  position: relative;
  word-wrap: break-word;
}
.message.ai .msg-bubble {
  background: var(--persona-bg, var(--bg-bubble-ai));
  border-bottom-left-radius: 4px;
  color: var(--text-main);
}
.message.user .msg-bubble {
  background: var(--bg-bubble-user);
  border-bottom-right-radius: 4px;
  color: var(--text-main);
}

/* === TYPING INDICATOR === */
.typing-indicator {
  display: none;
  align-self: flex-start;
  gap: 10px;
  max-width: 85%;
  animation: msgIn 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.typing-indicator.visible { display: flex; }
.typing-dots {
  display: flex;
  gap: 4px;
  padding: 14px 18px;
  background: var(--persona-bg, var(--bg-bubble-ai));
  border-radius: var(--radius-md);
  border-bottom-left-radius: 4px;
}
.typing-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--persona-color, var(--accent-blue));
  opacity: 0.4;
  animation: typingBounce 1.4s ease-in-out infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }
@keyframes typingBounce {
  0%,60%,100% { transform:translateY(0); opacity:0.4; }
  30% { transform:translateY(-6px); opacity:1; }
}

/* === SUGGESTION CHIPS === */
.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 16px;
  border-top: 1px solid #f0ece6;
  flex-shrink: 0;
}
.suggestion-chip {
  padding: 7px 14px;
  border: 1.5px solid #e8e4de;
  border-radius: 50px;
  background: white;
  font-family: 'Nunito', sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.suggestion-chip:hover {
  border-color: var(--persona-color, var(--accent-blue));
  color: var(--persona-color, var(--accent-blue));
  background: var(--persona-bg, #F0F7FF);
  transform: translateY(-1px);
}

/* === INPUT AREA === */
.input-area {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid #f0ece6;
  flex-shrink: 0;
  align-items: flex-end;
}
.input-area textarea {
  flex: 1;
  padding: 10px 16px;
  border: 2px solid #e8e4de;
  border-radius: var(--radius-sm);
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  outline: none;
  background: #FAFAF8;
  color: var(--text-main);
  min-height: 42px;
  max-height: 120px;
  transition: border-color 0.2s;
}
.input-area textarea:focus { border-color: var(--persona-color, var(--accent-blue)); }
.input-area textarea::placeholder { color: #bbb; }

.send-btn {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: var(--persona-color, var(--accent-blue));
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}
.send-btn:hover { transform: scale(1.08); filter: brightness(1.1); }
.send-btn:disabled { opacity:0.4; cursor:default; transform:none; }
.send-btn svg { width:20px; height:20px; }

/* === WELCOME SCREEN === */
.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px;
  text-align: center;
}
.welcome-screen.hidden { display: none; }
.welcome-mascot { font-size: 64px; margin-bottom: 12px; animation: bounce 2s ease-in-out infinite; }
@keyframes bounce {
  0%,100% { transform:translateY(0); }
  50% { transform:translateY(-10px); }
}
.welcome-screen h2 {
  font-family: 'Baloo 2', cursive;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}
.welcome-screen p { font-size: 14px; color: var(--text-secondary); max-width: 400px; line-height: 1.6; }

/* === RATE LIMIT NOTICE === */
.rate-notice {
  text-align: center;
  padding: 6px;
  font-size: 11px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.rate-notice span { font-weight: 700; color: var(--accent-orange); }

/* === SAFETY BANNER === */
.safety-banner {
  display: none;
  padding: 8px 14px;
  background: #FFF3E0;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: #E65100;
  text-align: center;
  margin: 0 16px 8px;
  line-height: 1.5;
}
.safety-banner.visible { display: block; }

/* === RESPONSIVE === */
@media (max-width: 600px) {
  .app-container { padding: 6px; }
  .header h1 { font-size: 22px; }
  .persona-bar { gap: 6px; justify-content: flex-start; flex-wrap: nowrap; }
  .persona-btn { padding: 6px 10px; font-size: 12px; }
  .message { max-width: 92%; }
  .welcome-mascot { font-size: 48px; }
}