:root {
  --background: #f5f5f7;
  --background-alt: rgba(255, 255, 255, 0.92);
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --accent: #0071e3;
  --accent-dark: #005bbd;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --border: rgba(0, 0, 0, 0.08);
  --shadow-soft: 0 30px 60px rgba(31, 41, 55, 0.12);
  --glow-primary: rgba(10, 132, 255, 0.28);
  --orb-blue: rgba(122, 162, 255, 0.55);
  --orb-purple: rgba(180, 150, 255, 0.4);
  --orb-pink: rgba(255, 185, 220, 0.42);
  --radius-large: 28px;
  --radius-medium: 18px;
  --radius-small: 12px;
  --success: #34c759;
  --warning: #ffd60a;
  --danger: #ff3b30;
}

@keyframes floatOrb {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(12px, -18px, 0) scale(1.05);
  }
}

@keyframes fadeSlideUp {
  0% {
    opacity: 0;
    transform: translate3d(0, 24px, 0);
  }

  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInSoft {
  0% {
    opacity: 0;
    transform: translate3d(0, 12px, 0);
  }

  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes buttonSheen {
  0% {
    transform: translateX(-120%);
  }

  100% {
    transform: translateX(220%);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: radial-gradient(circle at top, #fdfdfd 0%, #f2f4f8 60%, #e7e9f0 100%);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 48px 24px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.background-orbs {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.background-orbs .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.7;
  mix-blend-mode: lighten;
  animation: floatOrb 16s ease-in-out infinite;
}

.background-orbs .orb-1 {
  width: 420px;
  height: 420px;
  background: var(--orb-blue);
  top: -120px;
  left: -120px;
}

.background-orbs .orb-2 {
  width: 360px;
  height: 360px;
  background: var(--orb-purple);
  bottom: -140px;
  right: -120px;
  animation-duration: 18s;
}

.background-orbs .orb-3 {
  width: 280px;
  height: 280px;
  background: var(--orb-pink);
  top: 40%;
  left: 60%;
  animation-duration: 22s;
}

.container {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
  animation: fadeSlideUp 0.9s ease 0.05s both;
}

.app-header {
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-large);
  padding: 16px 24px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.75);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  overflow: hidden;
  animation: fadeSlideUp 0.85s ease 0.12s both;
  z-index: 0;
}

.app-header::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0));
  opacity: 0.8;
  pointer-events: none;
  z-index: -1;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: nowrap;
  width: 100%;
}

.header-branding {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-branding img {
  width: 72px;
  height: auto;
  filter: drop-shadow(0 18px 28px rgba(15, 23, 42, 0.18));
}

.app-logo {
  width: 48px;
  height: 48px;
  border-radius: 18px;
  object-fit: contain;
  padding: 6px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 20px 35px rgba(15, 23, 42, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

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


.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.brand-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.header-meta {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  flex-wrap: nowrap;
}

.date-display {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.85);
  white-space: nowrap;
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.user-info {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.user-info a {
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0, 113, 227, 0.15);
  color: var(--accent-dark);
  box-shadow: 0 12px 18px rgba(0, 113, 227, 0.18);
}

.save-indicator {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-height: 1rem;
  white-space: nowrap;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
}

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

@media (max-width: 768px) {
  .app-header {
    padding: 16px 18px;
  }

  .header-content {
    flex-wrap: nowrap;
    align-items: center;
    gap: 12px;
  }

  .header-branding img {
    width: 48px;
  }

  .brand-text {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .brand-subtitle {
    font-size: 0.8rem;
  }

  .header-meta {
    margin-left: auto;
    gap: 10px;
    flex-wrap: nowrap;
  }

  .date-display,
  .save-indicator {
    display: none;
  }

  .user-info {
    font-size: 0.85rem;
    gap: 8px;
  }
}

.main-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
}

.sidebar {
  background: var(--surface-strong);
  border-radius: var(--radius-medium);
  padding: 28px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.8);
  position: sticky;
  top: 48px;
  height: fit-content;
  animation: fadeSlideUp 0.9s ease 0.18s both;
  overflow: hidden;
  z-index: 0;
}

.sidebar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
  opacity: 0.9;
  pointer-events: none;
  z-index: -1;
}

.sidebar h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-action {
  margin: 18px 0;
}

.categories-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.category-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-radius: var(--radius-small);
  color: var(--text-primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-item:hover {
  transform: translateX(6px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.05);
}

.category-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0));
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.category-item.active {
  background: linear-gradient(135deg, rgba(0, 113, 227, 0.18), rgba(0, 113, 227, 0.08));
  border-color: rgba(0, 113, 227, 0.35);
  color: var(--accent-dark);
  font-weight: 600;
  box-shadow: 0 18px 30px rgba(0, 113, 227, 0.15);
}

.category-item:hover::after,
.category-item.active::after {
  opacity: 1;
}

.color-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 8px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.delete-category {
  font-size: 1.4rem;
  line-height: 1;
  color: rgba(29, 29, 31, 0.45);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, color 0.2s ease;
}

.delete-category:hover {
  background: rgba(255, 59, 48, 0.12);
  color: var(--danger);
}

.stats {
  margin-top: 28px;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  padding: 18px;
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 18px 26px rgba(15, 23, 42, 0.07);
}

.stat-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px;
  border-radius: var(--radius-medium);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.72));
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 16px 32px var(--glow-primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: fadeInSoft 0.6s ease both;
}

.stat-item:hover,
.stat-item:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.12);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: transform 0.25s ease, color 0.25s ease;
}

.stat-item:hover .stat-value,
.stat-item:focus-within .stat-value {
  transform: scale(1.18);
  color: var(--accent-dark);
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.content-area {
  background: var(--surface-strong);
  border-radius: var(--radius-large);
  padding: 32px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  gap: 40px;
  animation: fadeSlideUp 1s ease 0.24s both;
  position: relative;
  overflow: hidden;
  z-index: 0;
}

.content-area::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0));
  pointer-events: none;
  z-index: -1;
}

.section-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-margin-top: 120px;
}

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

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 0;
  padding: 20px;
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 18px 28px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.filter-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0));
  pointer-events: none;
  z-index: -1;
}

.section-title {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.6);
}

.section-action {
  display: inline-flex;
  align-items: center;
}

.navbar-actions {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.tasks-container {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.task-date-group {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-dark);
  margin-top: 12px;
  letter-spacing: 0.05em;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px;
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 18px 28px rgba(15, 23, 42, 0.08), 0 12px 30px var(--glow-primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  animation: fadeInSoft 0.55s ease both;
}

.task-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 36px rgba(15, 23, 42, 0.12), 0 18px 36px var(--glow-primary);
}

.task-checkbox {
  width: 24px;
  height: 24px;
  accent-color: var(--accent);
  cursor: pointer;
}

.task-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.task-title {
  font-size: 1.05rem;
  font-weight: 600;
}

.task-details {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.task-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 113, 227, 0.12);
  color: var(--accent-dark);
  font-size: 0.85rem;
}

.completed {
  text-decoration: line-through;
  color: rgba(110, 110, 115, 0.7);
}

.empty-state {
  padding: 36px;
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.75);
  border: 1px dashed rgba(0, 0, 0, 0.08);
  text-align: center;
  color: var(--text-secondary);
  display: grid;
  gap: 8px;
  place-items: center;
  animation: fadeInSoft 0.5s ease both;
}

#notes-list {
  display: grid;
  gap: 16px;
}

.note-item {
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-medium);
  padding: 20px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.08), 0 14px 34px var(--glow-primary);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: fadeInSoft 0.6s ease both;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.note-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 36px rgba(15, 23, 42, 0.14), 0 20px 38px var(--glow-primary);
}

.note-text {
  font-size: 1rem;
  color: var(--text-primary);
  flex: 1;
  white-space: pre-wrap;
}

.note-actions {
  display: flex;
  gap: 10px;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.1);
  will-change: transform;
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.85rem;
}

a.btn:hover {
  text-decoration: none;
}

.btn:focus {
  outline: 3px solid rgba(0, 113, 227, 0.2);
  outline-offset: 2px;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.12);
}

.btn-primary {
  background: linear-gradient(135deg, #0a84ff, #0071e3);
  color: white;
  box-shadow: 0 22px 36px rgba(0, 113, 227, 0.28);
  isolation: isolate;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0f7ae5, #0060c6);
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -140%;
  width: 120%;
  height: 100%;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0));
  transform: skewX(-18deg);
  animation: buttonSheen 3.2s ease-in-out infinite;
  pointer-events: none;
  opacity: 0.65;
}

.btn-primary:hover::before {
  animation-duration: 1.6s;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.85);
  color: var(--text-primary);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.btn-secondary:hover {
  background: rgba(245, 245, 247, 0.95);
}

.btn-success {
  background: linear-gradient(135deg, #34c759, #2aba50);
  color: white;
}

.btn-warning {
  background: rgba(255, 214, 10, 0.2);
  color: #b67b00;
  border: 1px solid rgba(255, 214, 10, 0.4);
}

.btn-danger {
  background: rgba(255, 59, 48, 0.15);
  color: var(--danger);
  border: 1px solid rgba(255, 59, 48, 0.2);
}

.btn-danger:hover {
  background: rgba(255, 59, 48, 0.2);
}

.btn-warning:hover {
  background: rgba(255, 214, 10, 0.3);
}

.full-width {
  width: 100%;
}

.note-actions .btn {
  padding: 10px 14px;
  border-radius: 12px;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  justify-content: center;
  align-items: center;
  padding: 24px;
  z-index: 1000;
  display: flex;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.modal.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-content {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-large);
  width: min(460px, 100%);
  padding: 32px;
  box-shadow: 0 30px 55px rgba(15, 23, 42, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.8);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.35s ease;
}

.modal.is-visible .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.modal-header h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

.close {
  font-size: 1.8rem;
  cursor: pointer;
  color: rgba(29, 29, 31, 0.45);
  transition: color 0.2s ease;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control,
.input-control,
textarea,
select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"] {
  width: 100%;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-control:focus,
.input-control:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: rgba(0, 113, 227, 0.45);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

.auth-body {
  min-height: 100vh;
  padding: 64px 24px;
  background: linear-gradient(160deg, #f6f7fb 0%, #e8ebf5 100%);
  display: flex;
  justify-content: center;
  align-items: center;
}

.auth-shell {
  width: min(420px, 100%);
}

.auth-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-large);
  padding: 40px 36px;
  box-shadow: 0 40px 70px rgba(15, 23, 42, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.85);
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: left;
}

.auth-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.auth-logo {
  width: 72px;
  height: auto;
  align-self: flex-start;
  filter: drop-shadow(0 18px 30px rgba(15, 23, 42, 0.18));
}

.auth-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

.auth-header p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.auth-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, #0a84ff, #66aefc);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
  box-shadow: 0 20px 30px rgba(0, 113, 227, 0.25);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-alert {
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255, 59, 48, 0.12);
  color: var(--danger);
  font-weight: 600;
  border: 1px solid rgba(255, 59, 48, 0.24);
}

@media (max-width: 1100px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    order: 2;
  }

  .content-area {
    order: 1;
  }

  .navbar {
    justify-content: center;
  }

  .navbar-links {
    margin: 0;
    width: 100%;
    justify-content: center;
  }

  .navbar-meta {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 720px) {
  body {
    padding: 32px 16px;
  }

  .app-header {
    padding: 16px;
  }

  .content-area,
  .sidebar {
    padding: 20px;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 14px;
    gap: 12px;
  }

  .stat-item {
    padding: 14px;
  }

  .header-content {
    gap: 8px;
  }

  .user-info a {
    padding: 4px 10px;
  }

  .section-title {
    font-size: 1.2rem;
  }

  .navbar {
    gap: 20px;
  }

  .navbar-branding {
    width: 100%;
    justify-content: center;
  }

  .brand-text {
    gap: 6px;
  }

  .brand-title {
    font-size: 1.4rem;
  }

  .brand-subtitle {
    display: none;
  }

  .navbar-links a {
    padding: 8px 14px;
  }

  .task-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 14px;
    border-radius: var(--radius-small);
    box-shadow: 0 12px 20px rgba(15, 23, 42, 0.06);
  }

  .task-details {
    justify-content: flex-start;
    gap: 8px;
    font-size: 0.85rem;
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
  }

  .filter-bar .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 32px 24px;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .stat-item {
    padding: 12px;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  .task-content {
    gap: 4px;
  }

  .task-title {
    font-size: 1rem;
  }

  .navbar-links {
    flex-direction: column;
    gap: 10px;
  }

  .navbar-meta {
    gap: 12px;
  }

  .date-display {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .task-item {
    padding: 16px;
    box-shadow: 0 10px 18px rgba(15, 23, 42, 0.05);
  }

  .task-details {
    font-size: 0.82rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}