*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background: #f8fafc;
  padding: 40px 20px;
  margin: 0;
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

.kanban-dashboard {
  width: 100%;
  max-width: 1100px;
}

.dashboard-header {
  margin-bottom: 30px;
}

.dashboard-header h2 {
  margin: 0 0 8px 0;
  color: #0f172a;
  font-size: 2rem;
}

.dashboard-header p {
  margin: 0;
  color: #64748b;
}

.kanban-wrapper {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  overflow-x: auto;
  padding-bottom: 20px;
}

.kanban-column {
  flex: 1;
  min-width: 300px;
  background: #f1f5f9;
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.column-header h3 {
  margin: 0;
  color: #1e293b;
  font-size: 1.125rem;
}

.count {
  background: #e2e8f0;
  color: #475569;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 150px;
}

.kanban-task {
  background: #ffffff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  cursor: grab;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid #e2e8f0;
  position: relative;
}

.kanban-task:active {
  cursor: grabbing;
}

.kanban-task.dragging {
  opacity: 0.6;
  transform: scale(0.95) rotate(2deg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  border-color: #3b82f6;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.tag.design { background: #fce7f3; color: #db2777; }
.tag.dev { background: #dbeafe; color: #2563eb; }

.kanban-task p {
  margin: 0 0 20px 0;
  color: #334155;
  font-weight: 500;
  line-height: 1.5;
}

.avatar {
  border-radius: 50%;
  position: absolute;
  bottom: 20px;
  right: 20px;
}

const tasks = document.querySelectorAll(".kanban-task");
const lists = document.querySelectorAll(".task-list");

let activeTask = null;

tasks.forEach(function(task) {
  task.addEventListener("dragstart", function() {
    activeTask = task;
    setTimeout(function() {
      task.classList.add("dragging");
    }, 0);
  });
  
  task.addEventListener("dragend", function() {
    activeTask.classList.remove("dragging");
    activeTask = null;
  });
});

lists.forEach(function(list) {
  list.addEventListener("dragover", function(e) {
    e.preventDefault();
    
    let closestTask = null;
    let closestOffset = Number.NEGATIVE_INFINITY;
    
    // Find all tasks in the list that are NOT currently being dragged
    const siblings = list.querySelectorAll(".kanban-task:not(.dragging)");
    
    // Determine exactly where the cursor is relative to the other tasks
    siblings.forEach(function(sibling) {
      const box = sibling.getBoundingClientRect();
      const offset = e.clientY - box.top - box.height / 2;
      
      if (offset < 0 && offset > closestOffset) {
        closestOffset = offset;
        closestTask = sibling;
      }
    });
    
    if (activeTask) {
      if (closestTask == null) {
        // Drop at the bottom if no task is below the cursor
        list.appendChild(activeTask);
      } else {
        // Insert before the task we are hovering over
        list.insertBefore(activeTask, closestTask);
      }
    }
  });
});