@font-face {
  font-family: "basier_squareregular";
  src: url("basiersquare-regular-webfont.eot");
  src: url("basiersquare-regular-webfont.eot?#iefix")
      format("embedded-opentype"),
    url("basiersquare-regular-webfont.woff2") format("woff2"),
    url("basiersquare-regular-webfont.woff") format("woff"),
    url("basiersquare-regular-webfont.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "basier_squaresemibold";
  src: url("basiersquare-semibold-webfont.eot");
  src: url("basiersquare-semibold-webfont.eot?#iefix")
      format("embedded-opentype"),
    url("basiersquare-semibold-webfont.woff2") format("woff2"),
    url("basiersquare-semibold-webfont.woff") format("woff"),
    url("basiersquare-semibold-webfont.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "basier_squarebold";
  src: url("basiersquare-bold-webfont.eot");
  src: url("basiersquare-bold-webfont.eot?#iefix") format("embedded-opentype"),
    url("basiersquare-bold-webfont.woff2") format("woff2"),
    url("basiersquare-bold-webfont.woff") format("woff"),
    url("basiersquare-bold-webfont.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
  --color-text: #0f0f0f;
  --color-text-secondary: #595959;
  --color-text-muted: #767676;
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #e8e8e8;
  --color-border: #e0e0e0;
  --color-border-light: #f0f0f0;

  --color-primary: #0f0f0f;
  --color-primary-hover: #333333;

  --color-danger: #d32f2f;
  --color-danger-bg: #ffebee;
  --color-danger-hover: #b71c1c;

  --color-success: #2e7d32;
  --color-success-bg: #e8f5e9;

  --color-warning: #f57c00;
  --color-warning-bg: #fff8e1;

  --color-high: #ffebee;
  --color-high-border: #ffcdd2;
  --color-medium: #fff8e1;
  --color-medium-border: #ffecb3;
  --color-low: #e8f5e9;
  --color-low-border: #c8e6c9;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* ============================================
   Minimal Reset
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

/* ============================================
   Base Styles
   ============================================ */
body {
  font-family: "basier_squareregular", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, sans-serif;
  font-weight: normal;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  margin: 0;
  padding: 0;
}

/* ============================================
   Layout
   ============================================ */
.container {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 50%;
  margin: 0 auto;
  padding: 24px;
  gap: 24px;
}

.divider {
  height: 2px;
  border: none;
  background-color: var(--color-border-light);
  margin: 0;
}

/* ============================================
   Typography
   ============================================ */
header {
  margin-bottom: 48px;
}

h1 {
  font-family: "basier_squarebold", sans-serif;
  font-weight: normal;
  font-size: 72px;
  line-height: 1;
  margin: 0 0 16px -3px;
}

h2 {
  font-family: "basier_squaresemibold", sans-serif;
  font-weight: normal;
  font-size: 24px;
  line-height: 1.4;
  color: var(--color-text);
  margin: 0 0 16px 0;
}

h3 {
  font-family: "basier_squaresemibold", sans-serif;
  font-weight: normal;
  font-size: 20px;
  margin: 0;
}

p {
  font-family: "basier_squareregular", sans-serif;
  color: var(--color-text-muted);
  margin: 0 0 16px 0;
}

#datetime {
  margin-bottom: 48px;
}

ul {
  color: var(--color-text-muted);
  margin: 0 0 16px 0;
  padding-left: 24px;
}

ul li {
  margin-bottom: 8px;
}

a {
  font-family: "basier_squaresemibold", sans-serif;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-text-secondary);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================
   Sticky Header
   ============================================ */
.sticky-rect {
  position: sticky;
  top: 0;
  width: 100%;
  padding: 12px 24px;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 100;
}

.studio-name {
  font-family: "basier_squaresemibold", sans-serif;
  font-size: 16px;
}

/* ============================================
   Search Bar
   ============================================ */
.search-container {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.search-icon {
  position: absolute;
  left: 12px;
  color: var(--color-text-muted);
  pointer-events: none;
}

#searchInput {
  width: 100%;
  padding: 12px 44px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

#searchInput:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 15, 15, 0.1);
}

#searchInput::placeholder {
  color: var(--color-text-muted);
}

.clear-search-btn {
  position: absolute;
  right: 8px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.clear-search-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
}

/* ============================================
   Filter & Sort Controls
   ============================================ */
.filter-sort-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.filter-column,
.sort-column {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-family: "basier_squareregular", sans-serif;
  font-size: 14px;
  color: var(--color-text-secondary);
}

select {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

select:hover {
  border-color: var(--color-text-muted);
}

select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 15, 15, 0.1);
}

/* ============================================
   Task List
   ============================================ */
.info-section {
  margin-bottom: 48px;
}

.task-section {
  min-height: 200px;
}

#mindMap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--color-text-muted);
  text-align: center;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

/* ============================================
   Todo Item
   ============================================ */
.todo-item {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  gap: 8px;
  transition: box-shadow var(--transition-fast),
    border-color var(--transition-fast);
}

.todo-item:hover {
  box-shadow: var(--shadow-sm);
}

.todo-item:focus-within {
  border-color: var(--color-primary);
}

/* Overdue styling */
.todo-item.overdue {
  border-left: 4px solid var(--color-danger);
}

.todo-item.overdue .due-date {
  color: var(--color-danger);
  font-weight: 600;
}

/* Row 1: Checkbox, text, actions */
.task-row-main {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Checkbox */
.todo-item input[type="checkbox"] {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

/* Task Text */
.task-text {
  flex: 1;
  font-size: 15px;
  color: var(--color-text);
  word-wrap: break-word;
  min-width: 0;
}

.task-text.completed {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

/* Task Actions */
.task-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.todo-item:hover .task-actions {
  opacity: 1;
}

.action-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

.action-btn:hover {
  background-color: rgba(0, 0, 0, 0.08);
  color: var(--color-text);
}

.action-btn.delete:hover {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.action-btn .material-symbols-outlined {
  font-size: 20px;
}

/* Row 2: Meta info (priority + due date) */
.task-row-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-left: 32px; /* Align with text after checkbox */
  font-size: 13px;
}

.priority-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-family: "basier_squareregular", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.priority-badge.priority-high {
  background-color: var(--color-danger);
  color: white;
}

.priority-badge.priority-medium {
  background-color: var(--color-warning);
  color: white;
}

.priority-badge.priority-low {
  background-color: var(--color-success);
  color: white;
}

.due-date {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.due-date .material-symbols-outlined {
  font-size: 16px;
}

/* ============================================
   Buttons
   ============================================ */
.actions-section {
  margin-bottom: 32px;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 48px;
}

.button {
  font-family: "basier_squareregular", sans-serif;
  font-size: 15px;
  padding: 12px 16px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-fast),
    color var(--transition-fast), border-color var(--transition-fast);
}

.button:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-text-muted);
}

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

.button .icon {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.button:hover .icon {
  color: var(--color-text);
}

.button-text {
  flex: 1;
  text-align: left;
}

/* Primary Button */
.primary-btn {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

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

.primary-btn .icon {
  color: rgba(255, 255, 255, 0.8);
}

.primary-btn:hover .icon {
  color: white;
}

/* Secondary Button */
.secondary-btn {
  background-color: var(--color-bg);
  border-color: var(--color-border);
  color: var(--color-text);
}

.secondary-btn:hover {
  background-color: var(--color-bg-secondary);
}

/* Danger Button */
.danger-btn {
  background-color: var(--color-danger-bg);
  border-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.danger-btn:hover {
  background-color: var(--color-danger);
  border-color: var(--color-danger);
  color: white;
}

.danger-btn .icon {
  color: var(--color-danger);
}

.danger-btn:hover .icon {
  color: white;
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal),
    visibility var(--transition-normal);
  padding: 24px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-small {
  max-width: 360px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.modal-footer .button {
  min-width: 100px;
  justify-content: center;
}

/* Form Elements */
.form-group {
  margin-bottom: 20px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--color-text);
}

.required {
  color: var(--color-danger);
}

.form-group input[type="text"],
.form-group input[type="date"] {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 15, 15, 0.1);
}

.form-group select {
  width: 100%;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.char-count {
  display: block;
  text-align: right;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ============================================
   Toast Notifications
   ============================================ */
#toastContainer {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1100;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--color-text);
  color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: slideIn var(--transition-normal) ease;
  max-width: 360px;
}

.toast.toast-success {
  background-color: var(--color-success);
}

.toast.toast-error {
  background-color: var(--color-danger);
}

.toast.toast-info {
  background-color: var(--color-text);
}

.toast-message {
  flex: 1;
  font-size: 14px;
}

.toast-action {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-family: "basier_squaresemibold", sans-serif;
  font-size: 13px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.toast-action:hover {
  background: rgba(255, 255, 255, 0.3);
}

.toast-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
}

.toast-close:hover {
  color: white;
}

.toast-close .material-symbols-outlined {
  font-size: 18px;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.hiding {
  animation: slideOut var(--transition-normal) ease forwards;
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ============================================
   Material Symbols
   ============================================ */
.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 300, "GRAD" 0, "opsz" 24;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  margin-top: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border-light);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-logo {
  font-family: "basier_squarebold", sans-serif;
  font-size: 16px;
  color: var(--color-text);
}

.footer-tagline {
  font-size: 16px;
  color: var(--color-text-muted);
  margin: 0;
}

.footer-contact h4,
.footer-social h4 {
  font-family: "basier_squaresemibold", sans-serif;
  font-size: 16px;
  color: var(--color-text);
  margin: 0 0 8px 0;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  margin: 0;
}

.contact-list .material-symbols-outlined {
  font-size: 18px;
  color: var(--color-text-muted);
}

.contact-list a {
  font-family: "basier_squareregular", sans-serif;
  font-size: 16px;
  color: var(--color-text-muted);
}

.contact-list a:hover {
  color: var(--color-text);
}

.footer-social p {
  font-family: "basier_squareregular", sans-serif;
  margin: 0;
}

.footer-social p a {
  font-family: "basier_squareregular", sans-serif;
  color: var(--color-text-muted);
}

.footer-social p a:hover {
  color: var(--color-text-secondary);
}

.footer-contact p {
  font-family: "basier_squareregular", sans-serif;
  margin: 0;
}

.footer-contact p a {
  font-family: "basier_squareregular", sans-serif;
  color: var(--color-text-muted);
}

.footer-contact p a:hover {
  color: var(--color-text-secondary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
  text-align: left;
}

.footer-bottom p {
  font-size: 16px;
  color: var(--color-text-muted);
  margin: 0;
}

/* ============================================
   Screen Reader Only
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   Responsive Styles
   ============================================ */
@media screen and (max-width: 480px) {
  .container {
    max-width: 100%;
    padding: 16px;
    gap: 16px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 16px;
  }

  .sticky-rect {
    display: none;
  }

  .filter-sort-container {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .button-grid {
    grid-template-columns: 1fr;
  }

  .todo-item {
    padding: 12px;
    gap: 8px;
  }

  .task-row-meta {
    padding-left: 32px;
    flex-wrap: wrap;
  }

  .task-actions {
    opacity: 1;
  }

  .modal-content {
    margin: 16px;
    max-height: calc(100vh - 32px);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  #toastContainer {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }

  .toast {
    max-width: none;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Reduce 48px section spacing to 32px on mobile */
  header {
    margin-bottom: 32px;
  }

  #datetime {
    margin-bottom: 32px;
  }

  .info-section {
    margin-bottom: 32px;
  }

  .empty-state {
    padding: 32px 24px;
  }

  .button-grid {
    margin-bottom: 32px;
  }
}

@media screen and (min-width: 481px) and (max-width: 768px) {
  .container {
    max-width: 90%;
  }

  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 16px;
  }

  .sticky-rect {
    display: none;
  }

  .button-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media screen and (min-width: 769px) and (max-width: 1024px) {
  .container {
    max-width: 75%;
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 18px;
  }

  .sticky-rect {
    display: none;
  }
}

@media screen and (min-width: 1025px) and (max-width: 1280px) {
  .container {
    max-width: 62.5%;
  }

  h1 {
    font-size: 64px;
  }

  h2 {
    font-size: 20px;
  }
}

@media screen and (min-width: 1281px) {
  .container {
    max-width: 50%;
  }

  h1 {
    font-size: 72px;
  }

  p {
    max-width: 80%;
  }

  .empty-state {
    max-width: 100%;
  }

  ul {
    max-width: 80%;
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .sticky-rect,
  .search-container,
  .filter-sort-container,
  .actions-section,
  .shortcuts-section,
  .task-actions,
  .modal-overlay,
  #toastContainer {
    display: none !important;
  }

  .container {
    max-width: 100%;
  }

  .todo-item {
    break-inside: avoid;
    border: 1px solid #ccc !important;
    background-color: white !important;
  }
}