/* ── Study Notes Chat — Education Theme ───────────────────────────────────── */
/* Intentionally styled to look like a note-sharing / study tool, not a chat */

#snc-wrap {
  --green:   #2e7d32;
  --green-l: #e8f5e9;
  --amber:   #f57f17;
  --amber-l: #fff8e1;
  --paper:   #fafdf6;
  --border:  #c8e6c9;
  --text:    #1b1b1b;
  --muted:   #757575;
  --accent:  #1565c0;
  --accent-l:#e3f2fd;
  --radius:  6px;
  --shadow:  0 2px 8px rgba(0,0,0,.10);

  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 680px;
  height: 600px;
  background: var(--paper);
  border: 2px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 14px;
  color: var(--text);
  overflow: hidden;
  position: relative;
}

/* ── Header ── */
#snc-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--green);
  color: #fff;
}
#snc-header-icon { font-size: 22px; }
#snc-header-text strong { display: block; font-size: 15px; }
#snc-header-text small  { font-size: 11px; opacity: .8; }
#snc-clear-btn {
  margin-left: auto;
  background: rgba(255,255,255,.18);
  border: none;
  color: #fff;
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 13px;
}
#snc-clear-btn:hover { background: rgba(255,255,255,.32); }

/* ── Feed ── */
#snc-feed {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background:
    repeating-linear-gradient(
      transparent, transparent 27px,
      #d0e8d0 28px
    ),
    var(--paper);
  background-attachment: local;
}

/* Date separator — styled as a chapter heading */
.snc-date-sep {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--green);
  margin: 8px 0 4px;
  position: relative;
}
.snc-date-sep::before,
.snc-date-sep::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 28%;
  height: 1px;
  background: var(--border);
}
.snc-date-sep::before { left: 0; }
.snc-date-sep::after  { right: 0; }

/* Note cards — look like sticky/index-card notes */
.snc-note {
  padding: 8px 12px 6px;
  border-radius: var(--radius);
  max-width: 72%;
  position: relative;
  cursor: pointer;
  line-height: 1.5;
  word-break: break-word;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  border-left: 4px solid transparent;
}
.snc-note:hover { filter: brightness(.97); }

.snc-note.alpha {
  background: var(--green-l);
  border-left-color: var(--green);
  align-self: flex-start;
}
.snc-note.beta {
  background: var(--amber-l);
  border-left-color: var(--amber);
  align-self: flex-end;
}

/* speaker label inside card */
.snc-note-speaker {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 3px;
}
.snc-note.alpha .snc-note-speaker { color: var(--green); }
.snc-note.beta  .snc-note-speaker { color: var(--amber); }

.snc-note-time {
  font-size: 10px;
  color: var(--muted);
  display: block;
  text-align: right;
  margin-top: 4px;
}

/* Reply reference block — looks like a quoted source */
.snc-reply-ref {
  display: block;
  background: rgba(0,0,0,.06);
  border-left: 3px solid var(--accent);
  padding: 4px 8px;
  font-size: 11px;
  color: #444;
  border-radius: 3px;
  margin-bottom: 5px;
  font-style: italic;
}

/* Highlighted note */
.snc-note.highlighted {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Popup menu — minimal, looks like an editor context menu ── */
#snc-popup {
  position: absolute;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(0,0,0,.15);
  display: none;
  z-index: 999;
  min-width: 130px;
  overflow: hidden;
}
#snc-popup button {
  display: block;
  width: 100%;
  padding: 9px 14px;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-size: 13px;
  color: #333;
}
#snc-popup button:hover { background: #f5f5f5; }

/* ── Reply bar ── */
#snc-reply-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--accent-l);
  border-top: 1px solid #c5d9f7;
  font-size: 12px;
}
#snc-reply-author {
  font-weight: 700;
  color: var(--accent);
  margin-right: 4px;
}
#snc-reply-snippet { color: #555; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#snc-reply-cancel {
  background: transparent;
  border: none;
  color: #555;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}

/* ── Input area ── */
#snc-inputs {
  padding: 10px 14px 12px;
  background: #f1f8f1;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.snc-input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.snc-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  min-width: 52px;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding-bottom: 10px;
}

.snc-input-row textarea {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  font-size: 13px;
  resize: none;
  min-height: 38px;
  max-height: 100px;
  overflow-y: hidden;
  font-family: inherit;
  color: var(--text);
  line-height: 1.4;
}
.snc-input-row textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 2px rgba(46,125,50,.15);
}

.snc-send-btn {
  padding: 8px 16px;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .03em;
  white-space: nowrap;
}
.snc-send-btn:hover { background: #1b5e20; }


/* Mobile optimization */
@media (max-width: 768px){
  #snc-wrap{
    height: 75vh !important;
    max-width:100% !important;
    border-radius:8px;
  }
  #snc-header{
    padding:8px 10px;
  }
  #snc-feed{
    padding:8px;
  }
  .snc-note{
    max-width:92% !important;
    font-size:13px;
  }
  .snc-input-row{
    flex-direction:column;
    align-items:stretch;
  }
  .snc-label{
    min-width:auto;
    padding-bottom:0;
  }
  .snc-send-btn{
    width:100%;
  }
  .snc-input-row textarea{
    width:100%;
    box-sizing:border-box;
  }
}