/* ============================================================
   SPCOET Smart AI Chatbot — Master Stylesheet
   Design: Clean, modern, maroon + gold college theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Serif+Display&display=swap');

/* ── Reset & Root ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --pri:       #8B1A1A;
  --pri-dark:  #6B1212;
  --pri-mid:   #A82020;
  --pri-light: #F5EAEA;
  --acc:       #D4873A;
  --acc-light: #FDF3E7;
  --bg:        #F6F4F0;
  --surface:   #FFFFFF;
  --surface2:  #F8F7F5;
  --txt:       #1A1410;
  --txt2:      #5A5248;
  --txt3:      #9A918A;
  --brd:       #E5DDD5;
  --brd2:      #CFC7BF;
  --green:     #16A34A;
  --shadow:    0 2px 12px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.05);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 14px;
  color: var(--txt);
}

body { background: var(--bg); height: 100vh; overflow: hidden; display: flex; }

/* ── SIDEBAR ──────────────────────────────────────────────── */
.sidebar {
  width: 240px; flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--brd);
  display: flex; flex-direction: column;
  overflow-y: auto; height: 100vh;
  transition: transform .3s;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 16px; background: var(--pri);
}
.logo-badge {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(255,255,255,0.18);
  display: flex; align-items: center; justify-content: center;
  font-family: 'DM Serif Display', serif; font-size: 17px; color: #fff;
  flex-shrink: 0;
}
.logo-name { color: #fff; font-weight: 800; font-size: 14px; }
.logo-sub  { color: rgba(255,255,255,0.65); font-size: 10px; margin-top: 1px; }

.sidebar-section { padding: 14px 12px; border-bottom: 1px solid var(--brd); }
.sidebar-label   { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--txt3); margin-bottom: 8px; padding-left: 4px; }

.sidebar-btn {
  display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 8px 12px; border: none; background: transparent;
  border-radius: 8px; font-size: 12.5px; font-weight: 500; color: var(--txt2);
  cursor: pointer; transition: all .15s; text-align: left; margin-bottom: 2px;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.sidebar-btn:hover { background: var(--pri-light); color: var(--pri); }

.lang-row { display: flex; gap: 6px; }
.lang-btn {
  flex: 1; padding: 6px; border: 1.5px solid var(--brd2);
  border-radius: 8px; background: var(--surface); font-size: 12px; font-weight: 700;
  cursor: pointer; transition: all .15s; font-family: 'Plus Jakarta Sans', sans-serif; color: var(--txt2);
}
.lang-btn:hover, .lang-btn.active { background: var(--pri); border-color: var(--pri); color: #fff; }

.sidebar-footer { padding: 14px 12px; margin-top: auto; display: flex; flex-direction: column; gap: 6px; }
.admin-link {
  display: block; padding: 7px 12px; border-radius: 8px;
  font-size: 12px; font-weight: 600; color: var(--txt2);
  text-decoration: none; border: 1px solid var(--brd2); text-align: center;
  transition: all .15s;
}
.admin-link:hover { background: var(--pri-light); color: var(--pri); border-color: var(--pri); }
.kb-status { font-size: 10.5px; color: var(--txt3); text-align: center; padding: 4px; }

/* ── MAIN CHAT AREA ───────────────────────────────────────── */
.main {
  flex: 1; display: flex; flex-direction: column;
  height: 100vh; overflow: hidden; min-width: 0;
}

.mobile-header {
  display: none; align-items: center; padding: 12px 16px;
  background: var(--pri); gap: 10px;
}
.menu-btn, .new-chat-btn {
  background: rgba(255,255,255,0.15); border: none; color: #fff;
  width: 34px; height: 34px; border-radius: 8px; cursor: pointer; font-size: 16px;
}
.mobile-title { flex: 1; color: #fff; font-weight: 700; font-size: 14px; text-align: center; }

.chat-header {
  padding: 14px 20px; background: var(--surface);
  border-bottom: 1px solid var(--brd);
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}
.chat-header-left { display: flex; align-items: center; gap: 12px; }
.bot-avatar-lg {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--pri); display: flex; align-items: center; justify-content: center;
  font-family: 'DM Serif Display', serif; font-size: 18px; color: #fff; flex-shrink: 0;
}
.chat-title    { font-weight: 800; font-size: 15px; color: var(--txt); }
.chat-subtitle { font-size: 11.5px; color: var(--txt3); margin-top: 1px; display: flex; align-items: center; gap: 5px; }
.online-dot    { width: 7px; height: 7px; border-radius: 50%; background: #22C55E; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.chat-header-right { display: flex; gap: 8px; }
.header-btn {
  background: var(--surface2); border: 1px solid var(--brd);
  border-radius: 8px; padding: 6px 12px; font-size: 12px; font-weight: 600;
  cursor: pointer; transition: all .15s; color: var(--txt2);
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.header-btn:hover { background: var(--pri-light); color: var(--pri); border-color: var(--pri); }

/* ── INFO BANNER ─────────────────────────────────────────── */
.info-banner {
  background: var(--acc-light); border-bottom: 1px solid rgba(212,135,58,0.2);
  padding: 10px 20px; flex-shrink: 0;
}
.info-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.info-item { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--txt2); }

/* ── MESSAGES ─────────────────────────────────────────────── */
.messages-container {
  flex: 1; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 16px;
  scroll-behavior: smooth;
}
.messages-container::-webkit-scrollbar { width: 4px; }
.messages-container::-webkit-scrollbar-thumb { background: var(--brd2); border-radius: 4px; }

/* ── Message Rows ── */
.msg-row { display: flex; gap: 10px; align-items: flex-end; max-width: 85%; }
.msg-row.user { align-self: flex-end; flex-direction: row-reverse; }
.msg-row.bot  { align-self: flex-start; }

.msg-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--pri); display: flex; align-items: center; justify-content: center;
  font-family: 'DM Serif Display', serif; font-size: 12px; color: #fff; flex-shrink: 0;
}
.msg-avatar.user { background: var(--acc); }

.msg-content { display: flex; flex-direction: column; gap: 3px; }
.msg-row.user .msg-content { align-items: flex-end; }

.msg-bubble {
  padding: 10px 14px; border-radius: 18px 18px 18px 4px;
  background: var(--surface); border: 1px solid var(--brd);
  color: var(--txt); font-size: 13.5px; line-height: 1.65;
  max-width: 100%; word-break: break-word;
}
.msg-row.user .msg-bubble {
  border-radius: 18px 18px 4px 18px;
  background: var(--pri); border-color: var(--pri); color: #fff;
}
.msg-bubble ul  { padding-left: 18px; margin: 6px 0; }
.msg-bubble li  { margin: 3px 0; }
.msg-bubble p   { margin: 4px 0; }
.msg-bubble strong { font-weight: 700; }
.msg-bubble a   { color: var(--acc); text-decoration: none; }
.msg-bubble a:hover { text-decoration: underline; }

.msg-meta { font-size: 10px; color: var(--txt3); display: flex; align-items: center; gap: 6px; }
.msg-row.user .msg-meta { justify-content: flex-end; }

.source-badge {
  background: var(--pri-light); color: var(--pri);
  font-size: 9.5px; font-weight: 600; padding: 1px 6px;
  border-radius: 10px; border: 1px solid rgba(139,26,26,0.15);
}

/* ── Welcome card ── */
.welcome-card {
  background: linear-gradient(135deg, var(--pri) 0%, var(--pri-mid) 100%);
  border-radius: 18px; padding: 24px; color: #fff; max-width: 500px;
}
.welcome-card h2 { font-family:'DM Serif Display',serif; font-size:22px; font-weight:400; margin-bottom:8px; }
.welcome-card p  { font-size:13px; opacity:.85; line-height:1.6; margin-bottom:16px; }
.welcome-topics  { display:flex; flex-wrap:wrap; gap:7px; }
.welcome-topic   { background:rgba(255,255,255,0.18); border:1px solid rgba(255,255,255,0.25); color:#fff; padding:5px 11px; border-radius:20px; font-size:11.5px; font-weight:600; cursor:pointer; transition:background .15s; }
.welcome-topic:hover { background:rgba(255,255,255,0.3); }

/* ── Typing indicator ── */
.typing-indicator { display:flex; gap:5px; align-items:center; padding:12px 16px; }
.typing-dot { width:7px; height:7px; border-radius:50%; background:var(--txt3); animation:typing 1.2s ease-in-out infinite; }
.typing-dot:nth-child(2){animation-delay:.2s}
.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes typing { 0%,60%,100%{transform:translateY(0)} 30%{transform:translateY(-6px)} }

/* ── SUGGESTIONS ROW ─────────────────────────────────────── */
.suggestions-row { padding: 8px 20px; background: var(--surface2); border-top: 1px solid var(--brd); flex-shrink: 0; }
.suggestions-label { font-size:11px; color:var(--txt3); font-weight:600; margin-bottom:6px; }
.suggestions-chips { display:flex; gap:7px; flex-wrap:wrap; }
.suggestion-chip {
  background: var(--surface); border: 1px solid var(--brd2);
  color: var(--txt2); font-size: 11.5px; font-weight: 500;
  padding: 5px 12px; border-radius: 20px; cursor: pointer; transition: all .15s;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.suggestion-chip:hover { background:var(--pri-light); border-color:var(--pri); color:var(--pri); }

/* ── INPUT AREA ───────────────────────────────────────────── */
.input-area {
  padding: 12px 20px 16px;
  background: var(--surface); border-top: 1px solid var(--brd); flex-shrink: 0;
}

/* Confidence bar */
.confidence-bar { margin-bottom: 10px; }
.confidence-info { display:flex; justify-content:space-between; font-size:11px; color:var(--txt3); margin-bottom:4px; }
.confidence-track { height:4px; background:var(--brd); border-radius:4px; overflow:hidden; }
.confidence-fill  { height:100%; background:var(--pri); border-radius:4px; transition:width .4s ease; }

/* Voice indicator */
.voice-indicator {
  display:flex; align-items:center; gap:10px; margin-bottom:8px;
  background:var(--pri-light); border:1px solid rgba(139,26,26,0.2);
  border-radius:10px; padding:8px 14px; font-size:12.5px; color:var(--pri); font-weight:600;
}
.voice-bars { display:flex; gap:3px; align-items:center; }
.voice-bars span { width:3px; background:var(--pri); border-radius:2px; animation:vbars .6s ease-in-out infinite alternate; }
.voice-bars span:nth-child(1){height:8px}
.voice-bars span:nth-child(2){height:14px;animation-delay:.15s}
.voice-bars span:nth-child(3){height:10px;animation-delay:.3s}
.voice-bars span:nth-child(4){height:6px;animation-delay:.45s}
@keyframes vbars{ from{transform:scaleY(.4)} to{transform:scaleY(1)} }
.voice-stop-btn { margin-left:auto; background:var(--pri); color:#fff; border:none; border-radius:6px; padding:4px 10px; font-size:11px; cursor:pointer; font-family:'Plus Jakarta Sans',sans-serif; }

/* Input row */
.input-row {
  display: flex; gap: 8px; align-items: flex-end;
  background: var(--surface2); border: 1.5px solid var(--brd2);
  border-radius: 14px; padding: 8px 8px 8px 14px; transition: border-color .18s;
}
.input-row:focus-within { border-color: var(--pri); }

#user-input {
  flex: 1; border: none; background: transparent; outline: none;
  resize: none; font-size: 13.5px; line-height: 1.55; color: var(--txt);
  font-family: 'Plus Jakarta Sans', sans-serif; max-height: 120px; min-height: 24px;
}
#user-input::placeholder { color: var(--txt3); }

.icon-btn {
  width: 36px; height: 36px; border-radius: 10px; border: none;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all .15s; flex-shrink: 0;
}
.voice-btn { background: transparent; color: var(--txt3); }
.voice-btn:hover { background: var(--pri-light); color: var(--pri); }
.voice-btn.active { background: rgba(139,26,26,.1); color: var(--pri); animation: micPulse 1s infinite; }
@keyframes micPulse { 0%,100%{background:rgba(139,26,26,.1)} 50%{background:rgba(139,26,26,.2)} }
.send-btn { background: var(--pri); color: #fff; }
.send-btn:hover { background: var(--pri-dark); }
.send-btn:disabled { background: var(--brd2); cursor: not-allowed; }

.input-footer { font-size: 10.5px; color: var(--txt3); margin-top: 6px; text-align: right; }
.input-footer kbd { background:var(--surface2); border:1px solid var(--brd2); border-radius:4px; padding:1px 4px; font-size:9.5px; }

/* ── SHARED FORM ELEMENTS ─────────────────────────────────── */
label { display:block; font-size:12px; font-weight:600; color:var(--txt2); margin-bottom:4px; }
input[type=text], input[type=password], input[type=email], select, textarea {
  width:100%; padding:9px 12px; border:1.5px solid var(--brd2);
  border-radius:8px; font-size:13px; color:var(--txt);
  font-family:'Plus Jakarta Sans',sans-serif; background:#fff; outline:none;
  transition:border-color .18s;
}
input:focus, select:focus, textarea:focus { border-color:var(--pri); }
input::placeholder, textarea::placeholder { color:var(--txt3); }
textarea { resize:vertical; line-height:1.6; }
.field { margin-bottom:14px; }
.field:last-child { margin-bottom:0; }
.btn-pri {
  background:var(--pri); color:#fff; border:none; padding:9px 20px;
  border-radius:9px; font-size:13px; font-weight:700; cursor:pointer;
  transition:background .18s; font-family:'Plus Jakarta Sans',sans-serif;
  display:inline-flex; align-items:center; gap:6px;
}
.btn-pri:hover { background:var(--pri-dark); }
.btn-sec {
  background:var(--surface); color:var(--txt2); border:1.5px solid var(--brd2);
  padding:8px 18px; border-radius:9px; font-size:13px; font-weight:600;
  cursor:pointer; transition:all .18s; font-family:'Plus Jakarta Sans',sans-serif;
}
.btn-sec:hover { background:var(--pri-light); color:var(--pri); border-color:var(--pri); }

/* ── RESPONSIVE ───────────────────────────────────────────── */
.sidebar-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.4); z-index:100; }

@media (max-width: 768px) {
  .sidebar { position:fixed; left:0; top:0; bottom:0; z-index:200; transform:translateX(-100%); }
  .sidebar.open { transform:translateX(0); }
  .sidebar-overlay.show { display:block; }
  .mobile-header { display:flex; }
  .chat-header { display:none; }
  .messages-container { padding:14px; }
  .input-area { padding:10px 14px 12px; }
  .msg-row { max-width:95%; }
}