:root {
  --bg: #f8f9fc;
  --card: #ffffff;
  --accent: #6c63ff;
  --muted: #666;
  --glass: rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  transition: var(--transition);
}

html,
body {
  height: 100%;
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: linear-gradient(180deg, #f0f4ff, #ffffff);
  color: #222;
}

/* ---------- LOGIN & REGISTER ---------- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: linear-gradient(135deg, #a18cd1, #fbc2eb);
  animation: fadeIn 1s ease-in-out;
}

.login-box {
  background: #fff;
  color: #333;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.25);
  text-align: center;
  width: 340px;
  animation: slideUp 0.8s ease;
}

.login-box h2 {
  margin: 0 0 10px;
  color: #333;
}

.login-box input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border-radius: 8px;
  border: 1px solid #ccc;
  transition: all 0.3s ease;
}

.login-box input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(108, 99, 255, 0.4);
}

.login-box button {
  padding: 12px 20px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  width: 100%;
  transition: transform 0.2s ease, background 0.3s ease;
}

.login-box button:hover {
  background: #5148d6;
  transform: scale(1.05);
}

.login-box p {
  margin-top: 12px;
  font-size: 14px;
}

.login-box a {
  color: var(--accent);
  text-decoration: none;
  font-weight: bold;
  position: relative;
}

.login-box a::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--accent);
  width: 0;
  transition: width 0.3s;
  margin: auto;
}

.login-box a:hover::after {
  width: 100%;
}

/* ---------- CHATBOT APP ---------- */
.hidden {
  display: none;
}

.app {
  max-width: 1000px;
  margin: 28px auto;
  padding: 18px;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  animation: fadeIn 1s ease;
}

.panel {
  background: var(--card);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
  animation: popIn 0.6s ease;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}

.logo {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6c63ff, #fbc2eb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 20px;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: rotate(15deg) scale(1.1);
}

h1 {
  margin: 0;
  font-size: 20px;
}

.lead {
  margin: 6px 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.logout-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: bold;
  transition: transform 0.2s ease, background 0.3s ease;
}

.logout-btn:hover {
  background: #5148d6;
  transform: scale(1.08);
}
.clear-btn {
  background: #ff6666;
  color: #fff;
  border: none;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: bold;
  margin-left: 8px;
  transition: transform 0.2s ease, background 0.3s ease;
}

.clear-btn:hover {
  background: #e64545;
  transform: scale(1.05);
}

/* ---------- Suggestions ---------- */
.suggestions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: fadeIn 0.8s ease;
}

.search input {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  background: #fdfdfd;
  color: #333;
}

.search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(108, 99, 255, 0.3);
}

.suggest-list {
  display: grid;
  gap: 8px;
  max-height: 62vh;
  overflow: auto;
  padding-right: 6px;
}

.btn-sugg {
  background: var(--glass);
  border: none;
  padding: 10px;
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  color: #333;
  position: relative;
  transition: all 0.2s ease-in-out;
}

.btn-sugg:hover {
  background: #e6e6ff;
  transform: translateX(6px);
}

/* ---------- Chat ---------- */
.chat-area {
  display: flex;
  flex-direction: column;
  height: 75vh;
}

.messages {
  flex: 1;
  overflow: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg {
  max-width: 78%;
  padding: 12px;
  border-radius: 12px;
  line-height: 1.35;
  animation: fadeInUp 0.5s ease;
}

.bot {
  background: #f1f1f9;
  border: 1px solid #ddd;
  align-self: flex-start;
}

.user {
  background: var(--accent);
  color: #fff;
  align-self: flex-end;
}

.meta {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}

.controls {
  display: flex;
  gap: 8px;
  padding-top: 12px;
}

.controls input {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #ccc;
  background: #fff;
  color: #333;
  transition: all 0.3s ease;
}

.controls input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(108, 99, 255, 0.3);
}

.controls button {
  padding: 10px 14px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.3s ease;
}

.controls button:hover {
  background: #5148d6;
  transform: scale(1.08);
}

footer.small {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 10px;
}

/* ---------- Typing Animation ---------- */
.typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px;
  background: #f1f1f9;
  border: 1px solid #ddd;
  border-radius: 12px;
  width: fit-content;
  animation: fadeIn 0.3s ease;
}

.typing .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  animation: bounce 1.2s infinite;
}

.typing .dot:nth-child(1) {
  animation-delay: 0s;
}
.typing .dot:nth-child(2) {
  animation-delay: 0.2s;
}
.typing .dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes bounce {
  0%,
  80%,
  100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(40px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes popIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    transform: translateY(15px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .app {
    grid-template-columns: 1fr;
  }
  .left {
    order: 2;
  }
  .chat-area {
    order: 1;
    height: 64vh;
  }
}