/* =========================================================================
   AyoFlow — Mindful To-Do List
   Theming via CSS custom properties on :root[data-theme]
   ========================================================================= */

:root,
:root[data-theme="light"] {
  --bg-1: #e9eae3;
  --bg-2: #f4f4f1;
  --bg-3: #dbdbdb;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --border: rgba(60, 70, 70, 0.12);
  --text: #2d3436;
  --text-soft: #5b6566;
  --muted: #8a9192;
  --brand: #4d5e60;
  --brand-strong: #2f3d3f;
  --accent: #6e8e72;
  --accent-strong: #4f6f57;
  --danger: #c2554d;
  --warning: #d49a3b;
  --good: #65a872;
  --shadow: 0 10px 30px rgba(40, 50, 50, 0.08),
    0 2px 6px rgba(40, 50, 50, 0.05);
  --chip-low-bg: #eaf4ec;
  --chip-low-fg: #3f7349;
  --chip-medium-bg: #fdf2dd;
  --chip-medium-fg: #8a6418;
  --chip-high-bg: #fbe1de;
  --chip-high-fg: #94342c;
  --chip-overdue-bg: #fde2dd;
  --chip-overdue-fg: #a02e25;
  --chip-date-bg: #eef1f1;
  --chip-date-fg: #4a5759;
}

:root[data-theme="dark"] {
  --bg-1: #1a1f21;
  --bg-2: #20272a;
  --bg-3: #161a1c;
  --surface: rgba(34, 41, 44, 0.85);
  --surface-strong: #262e31;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e9edee;
  --text-soft: #b8bfc1;
  --muted: #8a9396;
  --brand: #b9d0c8;
  --brand-strong: #dcebe5;
  --accent: #87b08e;
  --accent-strong: #a4cba9;
  --danger: #e08178;
  --warning: #e5b86c;
  --good: #87b08e;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.45),
    0 2px 8px rgba(0, 0, 0, 0.3);
  --chip-low-bg: rgba(135, 176, 142, 0.18);
  --chip-low-fg: #b9dabf;
  --chip-medium-bg: rgba(229, 184, 108, 0.18);
  --chip-medium-fg: #f0cf94;
  --chip-high-bg: rgba(224, 129, 120, 0.18);
  --chip-high-fg: #f1b1ab;
  --chip-overdue-bg: rgba(224, 129, 120, 0.22);
  --chip-overdue-fg: #f3b6b0;
  --chip-date-bg: rgba(255, 255, 255, 0.07);
  --chip-date-fg: #c8d0d2;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
    sans-serif;
  font-size: 16px;
  color: var(--text);
  min-height: 100vh;
  background: linear-gradient(
    135deg,
    var(--bg-1) 0%,
    var(--bg-2) 45%,
    var(--bg-3) 100%
  );
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Accessibility helpers */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -200px;
  top: 8px;
  background: var(--brand);
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus {
  left: 8px;
}

/* Layout */
.app-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  border-radius: 18px;
  box-shadow: var(--shadow);
  background: var(--surface-strong);
  padding: 4px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.title-company {
  font-family: "Limelight", serif;
  font-weight: 400;
  font-size: 44px;
  margin: 0;
  color: var(--brand-strong);
  letter-spacing: 0.5px;
}

.brand-tagline {
  margin: 6px 0 0;
  font-family: "Courgette", cursive;
  font-size: 18px;
  color: var(--text-soft);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, background 0.2s ease;
  position: relative;
}

.icon-btn:hover {
  transform: translateY(-1px);
  background: var(--surface-strong);
}

.icon-btn .icon-sun,
.icon-btn .icon-moon {
  position: absolute;
  transition: opacity 0.2s ease, transform 0.3s ease;
}

:root[data-theme="light"] .icon-btn .icon-sun {
  opacity: 1;
  transform: rotate(0);
}
:root[data-theme="light"] .icon-btn .icon-moon {
  opacity: 0;
  transform: rotate(-90deg);
}
:root[data-theme="dark"] .icon-btn .icon-sun {
  opacity: 0;
  transform: rotate(90deg);
}
:root[data-theme="dark"] .icon-btn .icon-moon {
  opacity: 1;
  transform: rotate(0);
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

/* Form */
.task-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.input-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

#input-task {
  flex: 1;
  font-size: 17px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  text-align: left;
}

#input-task::placeholder {
  color: var(--muted);
}

#input-task:focus,
#search-task:focus,
.task-edit-input:focus,
#date-task:focus,
#time-task:focus,
#priority-task:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(110, 142, 114, 0.22);
}

.btn-primary {
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  font-size: 22px;
  font-weight: 600;
  padding: 0 18px;
  border-radius: 12px;
  cursor: pointer;
  min-width: 56px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
  box-shadow: 0 4px 12px rgba(80, 110, 90, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(0);
}

.meta-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: 12px;
  color: var(--text-soft);
  font-weight: 500;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.field input,
.field select {
  padding: 9px 10px;
  font-size: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
}

.app-motivated {
  margin: 4px 0 0;
  font-family: "Courgette", cursive;
  font-size: 18px;
  color: var(--text-soft);
  text-align: center;
}

/* Toolbar */
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.search-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.6;
  font-size: 14px;
}

#search-task {
  width: 100%;
  padding: 10px 12px 10px 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  font-size: 14px;
}

.filters {
  display: inline-flex;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.filter-btn {
  border: none;
  background: transparent;
  color: var(--text-soft);
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 7px;
  transition: background 0.15s ease, color 0.15s ease;
}

.filter-btn:hover {
  color: var(--text);
}

.filter-btn.is-active {
  background: var(--brand);
  color: #fff;
}

/* Progress bar */
.progress {
  height: 6px;
  border-radius: 99px;
  background: var(--border);
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  border-radius: 99px;
  transition: width 0.4s ease;
}

.stats {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-soft);
}

/* Task list */
.task-set {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.task-item {
  display: grid;
  grid-template-columns: 18px 24px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px 14px;
  border-radius: 14px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  position: relative;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.2s ease;
  animation: fadeUp 0.25s ease;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.task-item:hover {
  box-shadow: 0 6px 14px rgba(40, 50, 50, 0.08);
}

.task-item.is-dragging {
  opacity: 0.5;
}

.task-item.drop-target {
  outline: 2px dashed var(--accent);
  outline-offset: 2px;
}

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

.task-item.is-overdue::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 99px;
  background: var(--danger);
}

.drag-handle {
  color: var(--muted);
  cursor: grab;
  font-size: 14px;
  user-select: none;
  line-height: 1;
}

.task-check {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--accent);
}

.task-body {
  min-width: 0;
}

.task-text {
  margin: 0;
  font-size: 16px;
  color: var(--text);
  word-wrap: break-word;
  word-break: break-word;
  line-height: 1.35;
}

.task-edit-input {
  width: 100%;
  font-size: 16px;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
}

.task-meta {
  margin: 6px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

.chip-date {
  background: var(--chip-date-bg);
  color: var(--chip-date-fg);
}

.chip-low {
  background: var(--chip-low-bg);
  color: var(--chip-low-fg);
}
.chip-medium {
  background: var(--chip-medium-bg);
  color: var(--chip-medium-fg);
}
.chip-high {
  background: var(--chip-high-bg);
  color: var(--chip-high-fg);
}
.chip-overdue {
  background: var(--chip-overdue-bg);
  color: var(--chip-overdue-fg);
}

.task-actions {
  display: inline-flex;
  gap: 6px;
}

.btn-icon {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-soft);
  font-size: 16px;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

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

.btn-edit:hover {
  color: var(--accent-strong);
}

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

.btn-icon:focus-visible,
.icon-btn:focus-visible,
.btn-primary:focus-visible,
.btn-ghost:focus-visible,
.filter-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(110, 142, 114, 0.35);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 28px 12px;
  color: var(--text-soft);
}

.empty-icon {
  font-size: 36px;
  display: block;
  margin-bottom: 6px;
}

.empty-title {
  margin: 4px 0 0;
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
}

.empty-sub {
  margin: 4px 0 0;
  font-size: 14px;
}

/* List actions */
.list-actions {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-ghost:hover {
  color: var(--text);
  background: var(--surface-strong);
}

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

.btn-danger:hover {
  background: rgba(194, 85, 77, 0.08);
  color: var(--danger);
  border-color: rgba(194, 85, 77, 0.4);
}

/* Footer */
.app-footer {
  margin-top: 8px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.app-footer p {
  margin: 0;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-strong);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 99px;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 50;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.toast-undo {
  background: transparent;
  border: none;
  color: var(--accent-strong);
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
  padding: 2px 4px;
}

.toast-undo:hover {
  text-decoration: underline;
}

/* Shake animation for empty submit */
.shake {
  animation: shake 0.35s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* Responsive */
@media (max-width: 560px) {
  .app-container {
    padding: 22px 14px 50px;
  }
  .title-company {
    font-size: 34px;
  }
  .logo {
    width: 56px;
    height: 56px;
  }
  .brand-tagline {
    font-size: 16px;
  }
  .meta-row {
    grid-template-columns: 1fr 1fr;
  }
  .meta-row .field:nth-child(3) {
    grid-column: span 2;
  }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .filters {
    align-self: flex-start;
  }
  .task-item {
    grid-template-columns: 16px 22px 1fr auto;
    padding: 12px;
  }
  .btn-icon {
    width: 30px;
    height: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}