/* ================= RESET GLOBAL ================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.5;
}

/* ================= CONTAINER ================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* ================= HEADER ================= */
header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid #ddd;
}

header h1 {
  font-size: 1.8rem;
  color: #1976d2;
}

/* ================= FILTERS ================= */
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.filters select {
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: #fff;
  transition: all 0.2s;
}

.filters select:hover {
  border-color: #1976d2;
}

/* ================= USER INFO ================= */
.user-info {
  font-size: 0.9rem;
  text-align: right;
}

.user-info button {
  margin-left: 10px;
  padding: 0.3rem 0.6rem;
  border: none;
  border-radius: 6px;
  background: #dc3545;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
}

.user-info button:hover {
  background: #a71d2a;
}

/* ================= CONVERSATION LIST ================= */
.conversation-list {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  overflow: hidden;
}

.conversation-item {
  padding: 15px 20px;
  border-bottom: 1px solid #eee;
  cursor: pointer;
  transition: background-color 0.2s;
}

.conversation-item:hover {
  background-color: #f0f8ff;
}

.conversation-item h3 {
  font-size: 1.1rem;
  color: #2c3e50;
  margin-bottom: 5px;
}

.conversation-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #666;
}

.status-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-open { background-color: #e3f2fd; color: #1976d2; }
.status-assigned { background-color: #fff3e0; color: #f57c00; }
.status-closed { background-color: #e8f5e9; color: #388e3c; }

/* ================= MESSAGE THREAD ================= */
.message-thread {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  max-height: 60vh;
  overflow-y: auto;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.message {
  margin-bottom: 15px;
  padding: 12px 16px;
  border-radius: 12px;
  max-width: 75%;
  word-wrap: break-word;
}

.message-inbound { background-color: #e3f2fd; margin-right: auto; }
.message-outbound { background-color: #f3e5f5; margin-left: auto; }

.message-meta {
  font-size: 0.8rem;
  color: #666;
  margin-top: 4px;
}

/* ================= MESSAGE INPUT ================= */
.message-input {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.message-input textarea {
  flex: 1;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 12px;
  resize: vertical;
  min-height: 50px;
}

.message-input button {
  padding: 12px 20px;
  border: none;
  border-radius: 12px;
  background: #1976d2;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
}

.message-input button:hover { background: #125ea2; }

/* ================= TIMER ================= */
.timer {
  font-weight: bold;
  font-size: 1rem;
  color: #1976d2;
  padding: 6px 12px;
  background-color: #f0f4f8;
  border-radius: 8px;
  border: 1px solid #ddd;
  font-family: monospace;
}

/* ================= BUTTONS ================= */
.btn {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary { background-color: #1976d2; color: #fff; border: none; }
.btn-danger { background-color: #d32f2f; color: #fff; border: none; }
.btn:hover { opacity: 0.9; }

/* ================= RESPONSIVE ================= */
@media (max-width: 1024px) {
  header { flex-direction: column; align-items: flex-start; }
  .filters { flex-wrap: wrap; margin-top: 10px; }
  .filters select { margin-bottom: 10px; }
}

@media (max-width: 768px) {
  .conversation-item h3 { font-size: 1rem; }
  .conversation-meta { font-size: 0.8rem; }
  .message-thread { padding: 15px; }
}

@media (max-width: 480px) {
  body { padding: 10px; }
  .conversation-item h3 { font-size: 0.95rem; }
  .message-thread { max-height: 50vh; padding: 12px; }
  .message { max-width: 100%; }
  .message-input textarea { min-height: 40px; }
}