@import url("https://fonts.googleapis.com/css2?family=Mulish:wght@400;500;600&display=swap");

:root {
  --bg-color: #e2e8f0;
  --text-color: #404040;
  --primary-color: #475569;
  --secondary-color: #cbd5e1;
  --task-color: #f6f6f6;
  --cancel-color: #e5e7eb;
  --confirm-color: #dc2626;
  --confirm-hover-color: #b91c1c;
  --task-size: 48px;
}

* {
  font-family: Mulish, sans-serif;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

h1 {
  margin: 2rem 0;
}

.header-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.header-section h1 {
  margin: 0;
  flex-shrink: 0;
}

.info-alert {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: #eff6ff;
  border-left: 4px solid #3b82f6;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  color: #1e40af;
  flex: 1;
  min-width: 280px;
  max-width: 500px;
  margin-top: 0.5rem;
}

.info-alert i {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.info-alert strong {
  font-weight: 600;
  color: #1e3a8a;
}

@media (max-width: 768px) {
  .header-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .info-alert {
    width: 100%;
    max-width: none;
  }
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: #fff;
  border-radius: 0.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  flex-wrap: wrap;
}

.toolbar button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--primary-color);
  color: #fff;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s;
  opacity: 1;
}

.toolbar button:hover {
  background: var(--text-color);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toolbar button i {
  font-size: 1rem;
}

.save-indicator {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #10b981;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.3s;
}

.save-indicator.visible {
  opacity: 1;
  animation: fadeIn 0.3s ease-in;
}

.save-indicator i {
  font-size: 1rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar button {
    justify-content: center;
  }

  .save-indicator {
    margin-left: 0;
    justify-content: center;
  }
}

/* Modern Notification Toast */
.modern-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 1.5rem;
  background: #fff;
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 10000;
  opacity: 0;
  transform: translateX(400px);
  transition: all 0.3s ease-out;
  max-width: 400px;
  border-left: 4px solid #3b82f6;
}

.modern-notification.show {
  opacity: 1;
  transform: translateX(0);
}

.modern-notification.success {
  border-left-color: #10b981;
}

.modern-notification.error {
  border-left-color: #ef4444;
}

.modern-notification .notification-content {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-color);
  font-weight: 500;
}

@media (max-width: 640px) {
  .modern-notification {
    right: 10px;
    left: 10px;
    max-width: none;
  }
}

/* Modern Confirmation Modal */
.modern-confirm-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20000;
  transition: background 0.3s ease;
}

.modern-confirm-overlay.show {
  background: rgba(0, 0, 0, 0.5);
}

.modern-confirm-modal {
  background: #fff;
  border-radius: 0.75rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  max-width: 450px;
  width: 90%;
  opacity: 0;
  transform: scale(0.9) translateY(-20px);
  transition: all 0.3s ease;
}

.modern-confirm-modal.show {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.modern-confirm-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid #e5e7eb;
}

.modern-confirm-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-color);
}

.modern-confirm-body {
  padding: 1.5rem;
}

.modern-confirm-body p {
  margin: 0;
  color: var(--text-color);
  line-height: 1.6;
  font-size: 0.9375rem;
}

.modern-confirm-footer {
  padding: 1rem 1.5rem 1.5rem;
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

.modern-btn {
  padding: 0.625rem 1.25rem;
  border-radius: 0.375rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  outline: none;
  opacity: 1 !important;
  /* Override global button opacity */
}

.modern-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.modern-btn-cancel {
  background: #fff;
  color: var(--text-color);
  border: 1px solid var(--cancel-color);
  box-shadow: 0 1px 2px -1px rgba(0, 0, 0, 0.1);
}

.modern-btn-cancel:hover {
  background: var(--cancel-color);
}

.modern-btn-confirm {
  background: var(--confirm-color);
  color: #fff;
  border: 1px solid var(--confirm-color);
  box-shadow: 0 1px 2px -1px rgba(0, 0, 0, 0.1);
}

.modern-btn-confirm:hover {
  background: var(--confirm-hover-color);
  border-color: var(--confirm-hover-color);
}

@media (max-width: 640px) {
  .modern-confirm-modal {
    width: 95%;
  }

  .modern-confirm-footer {
    flex-direction: column-reverse;
  }

  .modern-btn {
    width: 100%;
  }
}

button {
  cursor: pointer;
  border: none;
  background: transparent;
  outline-color: var(--secondary-color);
  color: var(--primary-color);
  transition: 0.3s;
  opacity: 0.5;
}

button:is(:active, :hover) {
  opacity: 1;
}

.container {
  width: min(1500px, 95%);
  margin: 0 auto;
}

.columns {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .columns {
    flex-direction: row;
  }
}

.column {
  flex: 1;
  display: grid;
  grid-template-rows: var(--task-size) 1fr;
  gap: 0.5rem;
}

.column-title {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--secondary-color);
  color: var(--primary-color);
}

.column-title h3 {
  font-size: 1rem;
  text-transform: uppercase;
}

.column-title h3::after {
  content: attr(data-tasks);
  background: lightblue;
  margin-left: 0.25rem;
  border-radius: 0.25rem;
  padding: 0 0.25rem;
}

.column-title button {
  margin-left: auto;
  font-size: 2rem;
}

.tasks {
  min-height: var(--task-size);
  display: grid;
  align-content: start;
  gap: 0.5rem;
}

.tasks>* {
  background: #fff;
  border-radius: 0.25rem;
  padding: 0.875rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: relative;
  min-height: var(--task-size);
}

.task {
  cursor: move;
  transition: 0.3s;
}

.task.dragging {
  cursor: default;
  box-shadow: none;
  background: var(--secondary-color);
  opacity: 0.5;
}

.task.dragging * {
  visibility: hidden;
}

.task:not(.dragging):hover {
  background: var(--task-color);
}

.task menu {
  margin-top: 0.875rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.task button {
  width: 1.5rem;
  height: 1.5rem;
  font-size: 1.25rem;
}

.task-input {
  outline: none;
  overflow-wrap: anywhere;
  padding-left: 2.5rem;
}

.task-input::before {
  content: "\F392";
  font-family: "bootstrap-icons";
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
}

.task-input:empty::after {
  content: attr(data-placeholder);
  opacity: 0.5;
}