/* ====== GLOBAL LAYOUT ====== */

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: #fafafa;
  color: #222;
}

/* ====== SIDEBAR ====== */

#sidebar {
  width: var(--sidebar-width);
  background: #ffffff;
  border-right: 1px solid var(--border-color);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ====== PROJECT LIST ====== */

#projects,
#history {
  flex: 1;
  overflow-y: auto;
  border-radius: 8px;
  padding: 0.5rem;
  background: #f9f9f9;
  border: 1px solid var(--border-color);
}


/* ====== MAIN CONTENT ====== */

#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  gap: 1rem;
  position: relative;
}

#main h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--primary-dark);
}

#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

#topbar-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}


/* ====== CHAT AREA ====== */

#chat {
  flex: 1;
  border: 1px solid var(--border-color);
  padding: 1rem;
  background: #fff;
  border-radius: 10px;
  overflow-y: auto;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* ====== INPUT ====== */

#question {
  width: 100%;
  box-sizing: border-box;  /* <-- ADD THIS */
  height: 65px;
  padding: 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
  resize: none;
}

#question:focus {
  border-color: var(--primary-color);
  outline: none;
}

/* ====== BUTTONS ====== */

button {
  background: var(--gradient);
  color: white;
  border: none;
  padding: 0.7rem 1.2rem;
  border-radius: 10px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
  box-shadow: 0 2px 6px rgba(163, 22, 33, 0.25);
}

button:hover {
  opacity: 0.9;
}

button:active {
  transform: scale(0.97);
  background: var(--primary-dark);
}

/* ====== PDF VIEWER ====== */

#pdf-viewer {
  display: none;
  width: 50%;
  height: 100vh;
  background: #ffffff;
  border-left: 1px solid var(--border-color);
  flex-direction: column;
}

#pdf-viewer.visible {
  display: flex;
}

/* PDF header toolbar */
#pdf-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: #fafafa;
  border-bottom: 1px solid var(--border-color);
}

#pdf-header button {
  background: #f1eaea;
  color: #4b2b2b;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  font-size: 1rem;
  padding: 0.4rem 0.7rem;
}

#pdf-header button:hover {
  background: #e7dcdc;
}

/* special close button */
#close-pdf {
  background: #fbe8e8 !important;
  color: var(--error-color) !important;
}

/* PDF pages */
#pdf-container {
  flex: 1;
  overflow: auto;
  padding: 1.5rem;
  background: #f0f0f0;
}

/* ====== RESIZE DIVIDER ====== */

#resize-divider {
  display: none;
  width: 6px;
  background: #e0e0e0;
  cursor: col-resize;
  z-index: 10;
}

#resize-divider.visible {
  display: block;
}

#resize-divider:hover {
  background: var(--primary-color);
}

/* While resizing */
body.resizing {
  cursor: col-resize;
  user-select: none;
}



/* ====== FEEDBACK BUTTON ====== */
#feedback-btn {
  width: 160px;
  position: fixed;
  left: 32px;
  bottom: 24px;
  opacity: 0.25;
  z-index: 50;
}

#feedback-btn:hover {
  opacity: 1;
}