/* ===================================================================
   TaskFlow — Portfolio-Ready Design
   Clean, modern, practical. Inspired by Todoist, Linear, Notion.
   =================================================================== */

/* ── Design Tokens ─────────────────────────────────────────────── */

:root {
  /* Surfaces */
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-surface-raised: #f0f0f3;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-muted: #aeaeb2;
  --color-border: #d2d2d7;
  --color-border-light: #e8e8ed;

  /* Accent */
  --color-accent: #0071e3;
  --color-accent-hover: #0060c0;
  --color-accent-light: rgba(0, 113, 227, 0.08);
  --color-accent-subtle: rgba(0, 113, 227, 0.04);

  /* Semantic */
  --color-success: #34c759;
  --color-warning: #ff9f0a;
  --color-danger: #ff3b30;
  --color-danger-hover: #d63028;

  /* Priority */
  --color-priority-low: #30d158;
  --color-priority-medium: #ff9f0a;
  --color-priority-high: #ff453a;

  /* Progress */
  --color-progress-bg: #e5e5ea;
  --color-progress-fill: var(--color-accent);

  /* Header */
  --color-header-bg: rgba(245, 245, 247, 0.82);

  /* Elevation */
  --shadow-xs: 0 1px 1px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 100px;

  /* Layout */
  --max-width: 680px;
  --header-height: 56px;

  /* Motion */
  --transition-fast: 0.12s ease;
  --transition-base: 0.2s ease;
  --transition-smooth: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Type */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Legacy compat */
  --glass-blur: 0;
  --glass-border: var(--color-border);
}

/* ── Dark Theme ────────────────────────────────────────────────── */

body.dark-theme {
  --color-bg: #0d0d0f;
  --color-surface: #1c1c1e;
  --color-surface-raised: #2c2c2e;
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #98989d;
  --color-text-muted: #636366;
  --color-border: #38383a;
  --color-border-light: #2c2c2e;

  --color-accent: #0a84ff;
  --color-accent-hover: #409cff;
  --color-accent-light: rgba(10, 132, 255, 0.12);
  --color-accent-subtle: rgba(10, 132, 255, 0.06);

  --color-priority-low: #30d158;
  --color-priority-medium: #ffd60a;
  --color-priority-high: #ff453a;

  --color-progress-bg: #2c2c2e;
  --color-progress-fill: var(--color-accent);

  --color-header-bg: rgba(13, 13, 15, 0.82);

  --shadow-xs: 0 1px 1px rgba(0, 0, 0, 0.15);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
}

/* ── Reset ─────────────────────────────────────────────────────── */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.3s ease, color 0.3s ease;
}

body::before,
body::after {
  display: none;
}

.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;
}

/* ── Cards ─────────────────────────────────────────────────────── */

.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

/* ── Header ────────────────────────────────────────────────────── */

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border-light);
}

.header-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text-primary);
}

.logo-icon {
  font-size: 1rem;
  color: var(--color-accent);
  animation: none;
}

.datetime {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.header-right {
  display: flex;
  align-items: center;
}








/* THIS IS COMMENT MADE BY SIJAN. CHANGES MADE ACCORDINGLY. */
/* Dead-letter selectors from old theme — keeping for compat */
/* [data-theme="light"] .theme-icon.sun,
[data-theme="light"] .theme-icon.moon,
[data-theme="dark"] .theme-icon.sun,
[data-theme="dark"] .theme-icon.moon { } */

/* ── Footer ────────────────────────────────────────────────────── */




.app-footer {
  margin-top: auto;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
  font-size: 0.78rem;
  text-align: center;
}

.app-footer p { margin: 0; }

.app-main {
  padding: 1.75rem 0 3rem;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: max-width var(--transition-base);
}

/* Layout Grid System */
.layout-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 769px) {
  :root {
    --max-width: 1024px;
  }
  .layout-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    align-items: start;
  }
  .layout-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: sticky;
    top: calc(var(--header-height) + 1.75rem);
  }
  .layout-content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    min-width: 0; /* Prevent grid overflow */
  }
}

/* ── Section Titles ────────────────────────────────────────────── */

.section-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

/* ── Forms ──────────────────────────────────────────────────────── */

.task-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.add-task-section,
.progress-section,
.toolbar {
  padding: 1.25rem;
}

.form-row {
  display: flex;
  gap: 0.75rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem 0.75rem;
}

.form-row-btn {
  display: flex;
  margin-top: 0.25rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  flex: 1;
  min-width: 0;
  position: relative;
  padding-bottom: 0.6rem;
}

.form-group-title { flex: 1; }
.form-group-desc  { flex: 1; }

label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

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

.optional {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.72rem;
}

input[type="text"],
input[type="search"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
textarea,
select {
  width: 100%;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 38px;
  line-height: 1.2;
}

textarea {
  height: auto;
  resize: vertical;
  min-height: 44px;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input[type="text"]:focus,
input[type="search"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
input[type="time"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.65rem center;
  padding-right: 1.8rem;
}

/* Ensure native date/time inputs display their contents clearly inside the rounded boxes */
input[type="date"],
input[type="time"] {
  padding-left: 0.4rem !important;
  padding-right: 0.1rem !important; /* align picker neatly to right content edge */
  font-size: 0.8rem !important;
  font-family: var(--font-family);
  letter-spacing: -0.015em;
}

/* WebKit-specific subcontrols to ensure the date/time segments inherit a smaller font */
input[type="date"]::-webkit-datetime-edit,
input[type="date"]::-webkit-datetime-edit-fields-wrapper,
input[type="time"]::-webkit-datetime-edit,
input[type="time"]::-webkit-datetime-edit-fields-wrapper {
  font-size: 0.8rem !important;
}

input[type="date"]::-webkit-datetime-edit-text,
input[type="date"]::-webkit-datetime-edit-month-field,
input[type="date"]::-webkit-datetime-edit-day-field,
input[type="date"]::-webkit-datetime-edit-year-field,
input[type="time"]::-webkit-datetime-edit-hour-field,
input[type="time"]::-webkit-datetime-edit-minute-field {
  font-size: 0.8rem !important;
}

input[type="date"]::placeholder,
input[type="time"]::placeholder,
input[type="date"]::-webkit-input-placeholder,
input[type="time"]::-webkit-input-placeholder {
  font-size: 0.8rem !important;
  opacity: 0.9;
}

/* Style the native picker indicator so it is correctly positioned and clean */
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.7;
  color: var(--color-text-secondary);
  height: 1.05rem;
  width: 1.05rem;
  transition: opacity var(--transition-fast);
  margin-left: 0.1rem;
  transform: translateX(2px);
}

input[type="date"]::-webkit-calendar-picker-indicator:hover,
input[type="time"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

/* Firefox - try to reduce the font-size of the displayed value */
input[type="date"]::-moz-placeholder,
input[type="time"]::-moz-placeholder {
  font-size: 0.74rem;
}

.form-error {
  position: static;
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--color-danger);
  line-height: 1.1;
}

/* ── Buttons ───────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0 1.1rem;
  height: 38px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  outline: none;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-xs);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.btn-outline:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

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

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

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

/* ── Progress ──────────────────────────────────────────────────── */

.progress-stats {
  display: flex;
  gap: 0;
  margin-bottom: 1rem;
}

.stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  position: relative;
}

.stat + .stat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: var(--color-border-light);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.progress-bar-container {
  width: 100%;
  height: 14px;
  background: var(--color-progress-bg);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-progress-fill);
  border-radius: var(--radius-pill);
  transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 0;
  position: relative;
}

.progress-text {
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  padding-right: 8px;
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-base), transform 0.12s ease;
  text-shadow: 0 1px 0 rgba(0,0,0,0.15);
}

.progress-bar[style*="width: 1"],
.progress-bar[style*="width: 2"],
.progress-bar[style*="width: 3"],
.progress-bar[style*="width: 4"],
.progress-bar[style*="width: 5"],
.progress-bar[style*="width: 6"],
.progress-bar[style*="width: 7"],
.progress-bar[style*="width: 8"],
.progress-bar[style*="width: 9"] {
  min-width: auto;
}

.progress-bar.has-progress .progress-text {
  opacity: 1;
}

/* ── Toolbar ───────────────────────────────────────────────────── */

.toolbar-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.search-container {
  flex: 1;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.78rem;
  pointer-events: none;
  opacity: 0.4;
}

.search-container input {
  padding-left: 2.1rem;
}

.sort-container {
  flex: 0 0 auto;
  min-width: 145px;
}

.filter-tabs {
  display: flex;
  gap: 2px;
  background: var(--color-surface-raised);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.filter-btn {
  flex: 1;
  padding: 0.4rem 0.85rem;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-family);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.filter-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

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

.filter-btn.active {
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* ── Task List ─────────────────────────────────────────────────── */

.task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.task-list:empty {
  display: none;
}

/* ── Task Item ─────────────────────────────────────────────────── */

.task-item {
  background: var(--color-surface);
  padding: 0.85rem 1.1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  transition: background var(--transition-fast);
  animation: taskSlideIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.task-item + .task-item {
  border-top: 1px solid var(--color-border-light);
}

@keyframes taskSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.task-item:hover {
  background: var(--color-accent-subtle);
}

body.dark-theme .task-item:hover {
  background: rgba(255, 255, 255, 0.03);
}

.task-item.completed {
  opacity: 0.5;
}

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

.task-item.removing {
  animation: slideOut 0.25s ease forwards;
}

@keyframes slideOut {
  to {
    opacity: 0;
    transform: translateX(20px);
    max-height: 0;
    margin: 0;
    padding: 0;
    border: 0;
    overflow: hidden;
  }
}

.task-item.completing {
  animation: completeFlash 0.35s ease;
}

@keyframes completeFlash {
  0%   { background: var(--color-surface); }
  50%  { background: rgba(52, 199, 89, 0.08); }
  100% { background: var(--color-surface); }
}

/* ── Checkbox ──────────────────────────────────────────────────── */

.task-checkbox {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  -webkit-appearance: none;
  appearance: none;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: transparent;
}

.task-checkbox:active {
  transform: scale(0.9);
}

.task-checkbox:hover {
  border-color: var(--color-accent);
}

.task-checkbox:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.task-checkbox:checked {
  background: var(--color-accent);
  border-color: var(--color-accent);
  animation: checkboxPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes checkboxPop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.2); }
  100% { transform: scale(1); }
}

.task-checkbox:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 6px;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  animation: checkmarkDraw 0.15s ease 0.05s forwards;
}

@keyframes checkmarkDraw {
  to { transform: rotate(45deg) scale(1); }
}

/* ── Task Content ──────────────────────────────────────────────── */

.task-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.task-title {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-primary);
  word-break: break-word;
  transition: color var(--transition-fast);
  line-height: 1.4;
}

.task-description {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  word-break: break-word;
  line-height: 1.45;
}

.task-meta {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-top: 0.3rem;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.68rem;
  font-weight: 500;
  line-height: 1.4;
}

.meta-tag.due-date {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.meta-tag.due-date.overdue {
  background: rgba(255, 59, 48, 0.08);
  color: var(--color-danger);
}

.meta-tag.countdown {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.meta-tag.countdown.overdue {
  background: rgba(255, 59, 48, 0.08);
  color: var(--color-danger);
}

.meta-tag.priority-low {
  background: rgba(48, 209, 88, 0.1);
  color: var(--color-priority-low);
}

.meta-tag.priority-medium {
  background: rgba(255, 159, 10, 0.1);
  color: var(--color-priority-medium);
}

.meta-tag.priority-high {
  background: rgba(255, 69, 58, 0.1);
  color: var(--color-priority-high);
}

.meta-tag[class*="category-"] {
  background: var(--color-surface-raised);
  color: var(--color-text-secondary);
}

/* ── Task Actions ──────────────────────────────────────────────── */

.task-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.task-item:hover .task-actions,
.task-item:focus-within .task-actions {
  opacity: 1;
}

.task-action-btn {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.task-action-btn:hover {
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
}

.task-action-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.task-action-btn.delete:hover {
  background: rgba(255, 59, 48, 0.08);
  color: var(--color-danger);
}

/* ── Empty State ───────────────────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 3.5rem 1.5rem;
  animation: fadeUp 0.35s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Compat with old fadeIn reference */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.empty-illustration {
  margin-bottom: 0.85rem;
}

.empty-icon {
  font-size: 2.75rem;
  display: inline-block;
  animation: none;
  opacity: 0.5;
}

.empty-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.3rem;
}

.empty-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  max-width: 300px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ── Actions Bar ───────────────────────────────────────────────── */

.actions-bar {
  display: flex;
  justify-content: flex-end;
}

/* ── Modal ─────────────────────────────────────────────────────── */

.modal {
  border: none;
  padding: 0;
  background: transparent;
  max-width: 460px;
  width: calc(100% - 2rem);
  border-radius: var(--radius-xl);
  overflow: visible;
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal[open] {
  animation: modalIn 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-content {
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.modal-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.modal-message {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.modal .form-group {
  margin-bottom: 0.75rem;
}

/* ── Responsive ────────────────────────────────────────────────── */

@media (max-width: 768px) {
  :root { --max-width: 100%; }

  .layout-grid {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .toolbar-row {
    flex-direction: column;
  }

  .sort-container {
    min-width: 100%;
  }
}

@media (max-width: 480px) {
  html { font-size: 15px; }

  .header-content { padding: 0 1rem; }
  .container { padding: 0 1rem; }
  .app-title { font-size: 0.95rem; }
  .add-task-section,
  .progress-section,
  .toolbar { padding: 1rem; }
  .task-item { padding: 0.75rem 0.85rem; }
  .task-actions { opacity: 1; }
  .modal { width: calc(100% - 1rem); }
  .modal-content { padding: 1.15rem; }
  .stat-value { font-size: 1.25rem; }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Print ─────────────────────────────────────────────────────── */

@media print {
  .app-header, .add-task-section, .toolbar,
  .actions-bar, .task-actions {
    display: none !important;
  }
  body::before, body::after { display: none; }
  .task-item { break-inside: avoid; }
}

/* ── Toast ─────────────────────────────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 260px;
  max-width: 360px;
  animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast.toast-success {
  border-left: 3px solid var(--color-success);
}

.toast.toast-danger {
  border-left: 3px solid var(--color-danger);
}

.toast.toast-info {
  border-left: 3px solid var(--color-accent);
}

.toast.removing {
  animation: toastOut 0.2s ease forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateY(-8px) scale(0.96); }
}

.toast-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

.toast-message {
  font-size: 0.82rem;
  font-weight: 500;
  flex: 1;
  line-height: 1.4;
}

.toast-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1.15rem;
  padding: 2px;
  line-height: 1;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.toast-close:hover {
  color: var(--color-text-primary);
}

/* ── Page Loader ───────────────────────────────────────────────── */

.page-loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.page-loader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 24px;
  height: 24px;
  border: 2.5px solid var(--color-border-light);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Theme Toggle ──────────────────────────────────────────────── */

.btn-theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.btn-theme-toggle:hover {
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
  border-color: var(--color-text-muted);
}

.btn-theme-toggle:active {
  transform: scale(0.93);
}

.theme-icon {
  position: absolute;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth);
}

body:not(.dark-theme) .theme-icon.moon {
  transform: rotate(90deg) scale(0);
  opacity: 0;
}
body:not(.dark-theme) .theme-icon.sun {
  transform: rotate(0deg) scale(1);
  opacity: 1;
}

body.dark-theme .theme-icon.moon {
  transform: rotate(0deg) scale(1);
  opacity: 1;
}
body.dark-theme .theme-icon.sun {
  transform: rotate(-90deg) scale(0);
  opacity: 0;
}