:root {
  --page-bg: #f2f4f8; /* light-gray page background */
  --panel: #ffffff; /* white panels */
  --blue: #3498db;/* primary blue */
  --blue-dark: #217dbb; /* darker blue */
  --btn-blue: #1474e2;/* button blue */
  --text: #0f1724;/* dark text on panels */
  --muted: #6b7280;
  --radius: 10px;
  --max-w: 1100px;
  
  /* --- NEW BUTTON COLORS --- */
  --new-btn-hover: hsl(234, 100%, 50%);
  --new-btn-active: hsl(234, 100%, 30%);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:'Roboto',sans-serif;
  background:var(--page-bg); /* Applied: --bg -> --page-bg */
  color:var(--text);-webkit-font-smoothing:antialiased;
  display:flex;justify-content:center;padding:28px;
}
.wrap{width:100%;max-width:var(--max-w)} /* Applied: --maxw -> --max-w */
header{background:linear-gradient(90deg,var(--blue),var(--blue-dark));
  color:white;padding:18px;border-radius:var(--radius);display:flex;gap:16px;align-items:center;margin-bottom:18px;
  box-shadow:0 10px 30px rgba(14,30,60,0.08);}
.h2 {color: var(--btn-blue);} /* Applied: #1e90ff -> --btn-blue (or --blue) */

a {color: var(--blue); text-decoration: none; font-size: 16px;} /* Applied: #1e90ff -> --btn-blue */
a:hover {
  text-decoration: underline;
}

.link {
  color: var(--btn-blue); /* Applied: #1e90ff -> --btn-blue */
}


.logo {
  width: clamp(48px, 10vw, 78px);
  height: clamp(48px, 10vw, 78px);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: clamp(16px, 3vw, 22px);
  transition: all 0.3s ease;
}
header h1{margin:0;font-size:20px; color: white;}
header p.lead{margin:4px 0 0;color:white;font-size:13px}
.ebook{background:var(--panel);border-radius:14px;padding:18px;box-shadow:0 8px 30px rgba(15,23,42,0.05)} /* Applied: --card -> --panel */
.layout{display:grid;grid-template-columns:320px 1fr;gap:18px;align-items:start}
nav{background:#fbfdff;border-radius:12px;padding:12px;border:1px solid rgba(16,24,40,0.03)}
nav h3{margin:0 0 10px 0;font-size:15px}
.examples{display:flex;flex-direction:column;gap:8px}
.example-item{
  background:#fff;border-radius:10px;padding:8px 10px;border:1px solid rgba(15,23,42, 0.1);
  cursor:pointer;font-weight:600;color: var(--text);text-align:center; /* Applied: --btn -> --btn-blue */
}
.example-item:hover{background:linear-gradient(90deg,rgba(59,130,246,0.06),rgba(30,64,175,0.06))}

.example-item:active{transform:translateY(1px)}
main{min-height:480px}
.card{background:var(--panel);border-radius:12px;padding:16px;border:1px solid rgba(15,23,42,0.03)} /* Applied: --card -> --panel */
.h2{margin:0 0 10px 0;color: var(--blue)} /* Applied: --btn-dark -> --blue- */
.chat-window{
  height:360px;border-radius:10px;padding:12px;background:linear-gradient(180deg,#fdfdfe,#f7fbff);
  overflow:auto;border:1px solid rgba(15,23,42,0.1);display:flex;flex-direction:column;gap:8px;
}
.msg{max-width:78%;padding:10px 12px;border-radius:12px;line-height:1.35;word-break:break-word}
.msg.bot{background: linear-gradient(90deg, var(--page-bg), var(--panel));color:var(--text);border:1px solid rgba(16,24,40,0.2)} /* Applied: --bg -> --page-bg, --card -> --panel */
.msg.user{align-self:flex-end;background:linear-gradient(90deg,var(--blue),var(--blue-dark));color:white; border-bottom-right-radius:4px}
.composer{display:flex;gap:8px;margin-top:12px;align-items:center}
.composer input[type=text]{flex:1;padding:10px 12px;border-radius:10px;border:1px solid rgba(15,23,42,0.1);font-size:15px;background:#fff}
.btn{background:var(--btn-blue);color:white;border:0;padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:700} /* Applied: --btn -> --btn-blue */

/* Button Hover/Active Fixes */
#clearBtn {background: linear-gradient(90deg, var(--blue), var(--blue-dark)); color: white;}
#sendBtn {background: linear-gradient(90deg, var(--blue), var(--blue-dark)); color: white;}
#replayBtn {background: linear-gradient(90deg, var(--blue), var(--blue-dark)); color: white;}

#clearBtn:hover {background: var(--new-btn-hover);}
#clearBtn:active {background: var(--new-btn-active);}
#sendBtn:hover {background: var(--new-btn-hover);}
#sendBtn:active {background: var(--new-btn-active);}
#replayBtn:hover {background: var(--new-btn-hover);}
#replayBtn:active {background: var(--new-btn-active);}
/* End Button Fixes */

.btn.ghost{background:#fff;color:var(--text);}
.controls{display:flex;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}
.status{font-size:13px;color:var(--muted)}
.examples-table{margin-top:12px;padding:10px;border-radius:8px;background:#fff;border:1px solid rgba(15,23,42,0.1)}

#chatHeading{color: var(--btn-blue);} /* Applied: #1e90ff -> --btn-blue */

.media-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:12px}
.media{background:#fbfdff;padding:10px;border-radius:10px;min-height:100px;border:1px solid rgba(15,23,42,0.1)}
.placeholder{font-size:13px;color:var(--muted)}
img,video,audio{width:100%;border-radius:8px;max-height:220px;object-fit:cover}
.note{font-size:13px;color:var(--muted);margin-top:8px}
.error{color:red;font-weight:700}
.success{color:rgb(0, 255, 0);font-weight:700}

/* MINI-GAME*/
.h3 {
  color: var(--blue); /* Applied: #007bff -> --blue */
  margin-bottom: 10px;
}

.timer {
  font-weight: 700;
  color: #000000;
  margin-bottom: 10px;
  font-size: 18px;
}

.game-container {
  background-color: #ffffff;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  width: 95%;
  max-width: 700px;
  padding: 20px;
  display: flex;
  flex-direction: column;
}


.chat-box {
  border: 1px solid #e0e0e0;
  border-radius: 15px;
  padding: 15px;
  height: 400px;
  overflow-y: auto;
  background-color: #fafafa;
  margin-bottom: 10px;
}

.chat-message {
  margin: 8px 0;
  padding: 10px 15px;
  border-radius: 15px;
  max-width: 75%;
  line-height: 1.4;
}

.bot {
    background-color: var(--new-btn-active); /* White bubble */
    color: white;
    align-self: flex-start;
    margin-right: auto;
    border-top-left-radius: 4px; 
}

.user {
    background-color: var(--new-btn-hover);/* White bubble */
 /* WhatsApp green bubble */
    color: white;
    align-self: flex-end;
    margin-left: auto;
    border-top-right-radius: 4px;
}

.input-area {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

#UserInput {
  flex-grow: 1;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 16px;
}

#SendBtn {
  background: linear-gradient(90deg, var(--blue), var(--blue-dark)); color: white;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
}
#StartBtn {
  background: linear-gradient(90deg, var(--blue), var(--blue-dark)); color: white;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
}

#StartBtn:hover {
  background: var(--new-btn-hover);
}
#StartBtn:active {
  background: var(--new-btn-active);
}

#RestartBtn {
  background: linear-gradient(90deg, var(--blue), var(--blue-dark)); color: white;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
}

#RestartBtn:hover {
  background: var(--new-btn-hover);
}

#RestartBtn:active {
  background: var(--new-btn-active);
}

/* Button Hover/Active Fixes */
#SendBtn:hover {
  background: var(--new-btn-hover);
}
#SendBtn:active {
  background: var(--new-btn-active);
}
/* End Button Fixes */

#scoreDisplay {
  text-align: center;
  margin-top: 10px;
  color: var(--blue); /* Applied: #007bff -> --blue */
  font-weight: bold;
}

 
/* RESPONSIVENESS */
@media (max-width: 980px) {
  body { padding:18px; }
  header { flex-direction:column; text-align:center; gap:8px; }
  .layout { grid-template-columns:1fr; }
  .chat-window { height:320px; }
  .composer input[type=text] { font-size:14px; }
  .chat-box { height:320px; }
}

@media (max-width: 720px) {
  header h1 { font-size:18px; }
  .chat-window, .chat-box { height:280px; }
  .msg { max-width:90%; font-size:14px; }
  button { padding:8px 12px; font-size:14px; }
  .composer { flex-direction:column; align-items:stretch; }
}

@media (max-width: 480px) {
  .logo { width:48px; height:48px; font-size:16px; }
  .chat-box { height:260px; }
  .timer, .score { font-size:16px; }
}