/* —— basic reset —— */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* —— body + fonts —— */
body {
  font-family: "Montserrat", Arial, Helvetica, sans-serif;
  color: #333;
  background: #f5f5f5;
  display: flex;
  justify-content: center;
}

.page-wrapper {
  width: 90%;
  max-width: 900px;
}

/* header */
.site-header {
  text-align: center;
  padding: 40px 0 30px;
  border-bottom: 3px solid #c8a951;
  margin-bottom: 10px;
}

.logo {
  height: 60px;
  margin-bottom: 16px;
}

.site-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #1a1a1a;
  margin-bottom: 6px;
}

.site-subtitle {
  font-size: 14px;
  font-weight: 300;
  color: #666;
  letter-spacing: 0.05em;
}

/* chat window */
.chatbox {
  margin: 30px 0;
}

.chat-window {
  height: 420px;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 20px;
  font-size: 15px;
  line-height: 1.6;
  overflow-y: auto;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* message bubbles */
.msg {
  max-width: 78%;
  padding: 12px 16px;
  border-radius: 18px;
  line-height: 1.55;
  font-size: 15px;
}

.msg.user {
  align-self: flex-end;
  background: #1a1a1a;
  color: #fff;
  border-bottom-right-radius: 4px;
}

.msg.ai {
  align-self: flex-start;
  background: #f0ebe1;
  color: #1a1a1a;
  border-bottom-left-radius: 4px;
  border-left: 3px solid #c8a951;
}

.msg.ai.thinking {
  color: #999;
  font-style: italic;
}

/* label above AI bubble */
.msg-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #c8a951;
  margin-bottom: 2px;
  align-self: flex-start;
}

/* input row */
.chat-form {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.chat-form input {
  flex: 1;
  padding: 13px 16px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: "Montserrat", Arial, Helvetica, sans-serif;
  font-size: 15px;
  transition: border-color 0.2s;
}

.chat-form input:focus {
  outline: none;
  border-color: #c8a951;
  box-shadow: 0 0 0 2px rgba(200, 169, 81, 0.25);
}

.chat-form button {
  font-size: 18px;
  background: #1a1a1a;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 12px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.25s;
  flex-shrink: 0;
}

.chat-form button .material-icons {
  font-size: 22px;
}

.chat-form button:hover {
  background: #c8a951;
}

.chat-form button:focus {
  outline: 2px solid #c8a951;
  outline-offset: 2px;
}

.chat-form button:disabled {
  background: #999;
  cursor: not-allowed;
}

/* visually hidden */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* footer */
.site-footer {
  margin: 50px 0 40px;
  text-align: center;
  font-size: 13px;
  color: #999;
  border-top: 1px solid #e0e0e0;
  padding-top: 24px;
}

.site-footer nav {
  margin-top: 10px;
}

.site-footer a {
  margin: 0 8px;
  color: #666;
  text-decoration: none;
}

.site-footer a:hover {
  color: #c8a951;
}