:root {
  --space-sm: 0.25rem;
  --space-md: 0.5rem;
  --space-lg: 0.75rem;
  --space-xl: 1rem;

  --bg-color: #f8f9fb;
  --bg-white: #ffffff;
  --primary: #4da3ff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
}

/* reset css */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  font-weight: 400;
  font-style: normal;
  width: 100%;
  min-height: 100vh;
  color: var(--text);
  line-height: 1.5;
  background-color: var(--bg-color);
}

ul {
  list-style: none;
}

.hidden {
  display: none !important;
}

header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0px 10px 20px rgba(15, 23, 42, 0.08);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-xl);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
}

.app-title {
  font-size: 24px;
  line-height: 1.2;
  font-weight: 800;
  text-transform: capitalize;
  white-space: nowrap;
}

.app-search-bar {
  display: flex;
  align-items: center;
  justify-content: start;
  gap: var(--space-sm);
  width: 100%;
  min-width: 0;
  max-width: 520px;
  flex: 1 1 320px;
  background-color: #f3f6fb;
  padding: var(--space-sm) var(--space-md);
  border-radius: 10px;
  border: 1px solid #e3e8f0;
}

.app-search-bar .fa-search {
  font-size: 16px;
  color: #9ca3af;
}

.search-bar {
  outline: none;
  border: none;
  background-color: transparent;
  width: 100%;
  display: block;
  font-size: 14px;
  font-weight: 500;
  padding: var(--space-sm);
}

.search-bar::placeholder {
  color: #9ca3af;
  font-size: 14px;
  line-height: normal;
  font-weight: 500;
}

.search-bar:focus {
  outline: none;
  border: none;
}

.app-header .icons {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
}

.app-header .icons .fa-regular {
  font-size: 16px;
  color: var(--muted);
  cursor: pointer;
}

.dashboard {
  width: 100%;
}

.filtersAndSort {
  width: 100%;
  background: linear-gradient(180deg, #f7f9fc 0%, #f2f6fb 100%);
  border-bottom: 1px solid var(--border);
}

.filtersAndSort .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.filtersAndSort .container .tabs {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.filtersAndSort .container .tabs .tab {
  padding: var(--space-sm) var(--space-lg);
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  line-height: normal;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  box-shadow: none;
}

.filtersAndSort .container .tabs .tab.active {
  background-color: #4da3ff;
  color: #ffffff;
  border-color: #4da3ff;
}

.filtersAndSort .container .tabs .tab:hover {
  background-color: #e7f1ff;
  color: #1f2937;
}

.filtersAndSort .container .tabs .tab.active:hover {
  background-color: #2f8cff;
}

.filtersAndSort select {
  width: 100%;
  min-width: 150px;
  outline: none;
  border: 1px solid var(--border);
  padding: var(--space-md) var(--space-xl);
  appearance: none;
  font-size: 12px;
  color: var(--muted);
  border-radius: 999px;
  background-color: #ffffff;
}

/* Empty State CSS */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  padding: calc(var(--space-xl) * 4);
  text-align: center;
  color: var(--muted);
}

.empty-illustration {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #e7f1ff;
  color: #4da3ff;
  font-size: 28px;
}

.empty-state h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
}

.empty-state p {
  font-size: 16px;
}

/* Notes CSS here */

.notes-grid {
  display: grid;
  grid-template-columns: 1fr; /* Mobile - 1 column */
  gap: 16px;
  margin-top: var(--space-xl);
}

.note {
  --note-accent: #d6e7ff;
  position: relative;
  overflow: hidden;
  box-shadow: 0px 6px 18px rgba(15, 23, 42, 0.08);
  padding: calc(var(--space-xl) * 1.25);
  border-radius: calc(var(--space-xl) * 1.25);
  background-color: var(--note-accent);
  border: 1px solid #eef1f5;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.note::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--note-accent);
}

.note.pinned {
  border: 2px solid var(--primary);
}

.note.pinned::after {
  content: "📌";
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 18px;
}

.note-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: var(--space-md);
}

.note-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.note-content {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #6b7280;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: var(--space-lg);
  border-bottom: 1px dashed var(--border);
}

.card-footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom {
  display: flex;
  gap: var(--space-sm);
}

.card-footer .date {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.card-footer .footer-bottom .tag {
  background-color: var(--primary);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  line-height: normal;
  font-weight: 600;
  color: var(--bg-white);
  cursor: pointer;
}

.card-footer .actions {
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
}

.card-footer .actions i {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #f3f4f6;
  color: var(--muted);
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.card-footer .actions i:hover {
  background: #e7f1ff;
  color: #1f2937;
  transform: translateY(-1px);
}

.card-footer .actions .fa-trash {
  color: #f44336;
  background: #ffeaea;
}

.card-footer .actions .fa-trash:hover {
  background: #ffd6d6;
}

.add-note-btn {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  background-color: #4da3ff;
  box-shadow: 0px 10px 20px rgba(77, 163, 255, 0.35);
  color: #ffffff;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.add-note-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0px 14px 24px rgba(77, 163, 255, 0.4);
}

.add-note-btn button {
  background: transparent;
  outline: none;
  border: none;
  font-size: 30px;
  color: #fff;
  cursor: pointer;
}

/* Add these for JavaScript to use later */
.tag.personal { 
  background-color: #F472B6!important; /* Pink */
  color: white; 
}

.tag.work { 
  background-color: #3B82F6!important; /* Blue */
  color: white; 
}

.tag.ideas { 
  background-color: #FBBF24!important; /* Yellow */
  color: white; 
}

.tag.important { 
  background-color: #EF4444!important; /* Red */
  color: white; 
}

.tag.default { 
  background-color: #10B981!important; /* Green */
  color: white; 
}

footer {
  background-color: var(--bg-white);
  text-align: center;
  padding: calc(var(--space-xl) * 2);
  margin-top: calc(var(--space-xl) * 3);
  border-top: 1px solid var(--border);
}

footer p {
  color: var(--muted);
  font-size: 14px;
}

footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

footer a:hover {
  text-decoration: underline;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: calc(var(--space-xl) * 2);
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(14, 13, 13, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: #fff;
  padding: calc(var(--space-xl) * 2);
  width: 100%;
  max-width: 560px;
  border-radius: 12px;
  box-shadow: 0px 20px 40px rgba(0, 0, 0, 0.12);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
}

.modal-header h2 {
  font-size: 22px;
  font-weight: 700;
  font-style: normal;
  line-height: normal;
  text-transform: uppercase;
}

.modal-close {
  background: transparent;
  outline: none;
  border: none;
  font-size: 16px;
  width: 36px;
  height: 36px;
  box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.06);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.modal-form {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.form-group {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-sm);
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  font-style: normal;
  color: var(--muted);
}

.form-group input,
.form-group textarea {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.form-group textarea {
  width: 100%;
  min-height: 120px;
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: 8px;
  resize: vertical;
  font-family: inherit;
}

.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group input[type="text"],
.form-group input[type="color"] {
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  height: 40px;
}

.form-group input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(77, 163, 255, 0.1);
}

.form-group input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.tab,
.tag,
.btn-primary,
.btn-secondary,
.add-note-btn button {
  transition: all 0.2s ease-in-out;
}

.note {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.note:hover {
  transform: translateY(-4px);
  box-shadow: 0px 12px 28px rgba(15, 23, 42, 0.12);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xl);
  margin-top: calc(var(--space-xl) * 1.5);
}

.btn-primary,
.btn-secondary {
  padding: var(--space-md) calc(var(--space-xl) * 1.5);
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: #2f8cff;
}

.btn-secondary {
  background-color: #f3f4f6;
  color: var(--text);
}

.btn-secondary:hover {
  background-color: #e5e7eb;
}

@media (max-width: 900px) {
  header .container {
    flex-wrap: wrap;
  }

  .app-search-bar {
    max-width: 100%;
    flex: 1 1 100%;
  }

  .filtersAndSort .container {
    gap: var(--space-lg);
  }
}

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

  .app-title {
    font-size: 20px;
  }

  .app-header .icons {
    justify-content: flex-start;
  }

  .filtersAndSort .container .tabs {
    gap: var(--space-sm);
  }

  .filtersAndSort .container .tabs .tab {
    padding: var(--space-sm) var(--space-md);
    font-size: 12px;
  }

  .add-note-btn {
    width: 50px;
    height: 50px;
  }

  .modal {
    padding: var(--space-xl);
  }

  .modal-content {
    padding: var(--space-xl);
  }

  .modal-header h2 {
    font-size: 18px;
  }

  footer {
    padding: calc(var(--space-xl) * 1.5);
  }
}

@media (min-width: 640px) {
  .notes-grid {
    grid-template-columns: repeat(2, 1fr); /* Tablet - 2 columns */
    gap: 20px;
  }
}

@media (min-width: 1024px) {
  .notes-grid {
    grid-template-columns: repeat(3, 1fr); /* Desktop - 3 columns */
    gap: 24px;
  }
}

@media (min-width: 1280px) {
  .notes-grid {
    grid-template-columns: repeat(4, 1fr); /* Large Desktop - 4 columns */
    gap: 24px;
  }
}

/* =====================
   TOAST NOTIFICATIONS
===================== */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 200;
  background: white;
  border: 1px solid var(--border);
  padding: var(--space-lg) var(--space-xl);
  border-radius: 12px;
  display: none;
  align-items: center;
  gap: var(--space-lg);
  box-shadow: 0px 20px 40px rgba(0, 0, 0, 0.15);
  min-width: 300px;
  max-width: 500px;
  animation: toastSlideIn 0.3s ease;
}

@keyframes toastSlideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.toast-success {
  border-color: #10B981;
  background: #ECFDF5;
}

.toast-success .toast-icon {
  color: #10B981;
}

.toast-success .toast-icon::before {
  content: '\f058'; /* fa-circle-check */
}

.toast-error {
  border-color: #EF4444;
  background: #FEF2F2;
}

.toast-error .toast-icon {
  color: #EF4444;
}

.toast-error .toast-icon::before {
  content: '\f06a'; /* fa-circle-exclamation */
}

.toast-info .toast-icon {
  color: var(--primary);
}

.toast-info .toast-icon::before {
  content: '\f05a'; /* fa-circle-info */
}

#toastMessage {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.toast-close {
  background: none;
  border: none;
  color: var(--muted);
  padding: var(--space-sm);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toast-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text);
}

@media (max-width: 640px) {
  .toast {
    bottom: var(--space-lg);
    right: var(--space-lg);
    left: var(--space-lg);
    min-width: auto;
  }
}