:root {
  --bg: #f0ecf5;
  --card: #ffffff;
  --text: #2c2c2c;
  --text-secondary: #6b6b6b;
  --border: #ddd6e8;
  --accent: #7c5cad;
  --accent-dark: #5b3d8f;
  --accent-light: #ede6f5;
  --danger: #c0392b;
  --danger-light: #fdecea;
  --high: #e74c3c;
  --medium: #f39c12;
  --low: #27ae60;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding-bottom: 100px;
}

.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  color: var(--text-secondary);
  font-size: 16px;
}

.loading-screen .emoji {
  font-size: 48px;
  margin-bottom: 12px;
}

header {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
  color: #fff;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 600px;
  margin: 0 auto;
}

.header-top h1 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.header-top h1 span {
  margin-right: 6px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(4px);
}

.user-badge:hover {
  background: rgba(255, 255, 255, 0.3);
}

.stats-row {
  display: flex;
  gap: 12px;
  max-width: 600px;
  margin: 10px auto 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.85);
}

.stat {
  background: rgba(255, 255, 255, 0.15);
  padding: 4px 10px;
  border-radius: 8px;
  backdrop-filter: blur(4px);
}

.stat strong {
  color: #fff;
}

.stat-overdue {
  color: var(--high);
  background: rgba(231, 76, 60, 0.15);
}

.stat-overdue strong {
  color: var(--high);
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px 16px 0;
}

.add-form {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.add-form .form-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.add-form input[type="text"] {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

.add-form input[type="text"]:focus {
  border-color: var(--accent);
}

.add-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.add-btn:hover {
  opacity: 0.9;
}

.add-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.form-options select,
.form-options input[type="date"] {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: #f8f5fc;
  color: var(--text);
  outline: none;
  cursor: pointer;
}

.form-options select:focus,
.form-options input[type="date"]:focus {
  border-color: var(--accent);
}

.filters {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 13px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
}

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

.section-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin: 18px 0 8px;
  padding-left: 4px;
}

.task-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  transition: all 0.2s;
  position: relative;
}

.task-card:hover {
  box-shadow: var(--shadow-md);
}

.task-card.completed {
  opacity: 0.55;
  background: #f8f5fc;
}

.task-card.completed .task-title {
  text-decoration: line-through;
}

.task-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--border);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  background: var(--card);
  font-size: 12px;
}

.task-check:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.task-check.checked {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.task-body {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  word-break: break-word;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
  align-items: center;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  gap: 3px;
}

.tag-priority-high {
  background: var(--danger-light);
  color: var(--high);
}

.tag-priority-medium {
  background: #fef5e7;
  color: var(--medium);
}

.tag-priority-low {
  background: #e8f8ef;
  color: var(--low);
}

.tag-category {
  background: #f8f5fc;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.tag-author {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.tag-due {
  background: #f8f5fc;
  color: var(--text-secondary);
}

.tag-due.overdue {
  background: var(--danger-light);
  color: var(--danger);
}

.tag-completed-by {
  background: #e8f8ef;
  color: var(--low);
}

.task-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.task-actions button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  font-size: 16px;
  opacity: 0.4;
  transition: all 0.2s;
}

.task-actions button:hover {
  opacity: 1;
  background: #f8f5fc;
}

.task-actions .del-btn:hover {
  background: var(--danger-light);
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  font-size: 14px;
}

.empty-state .emoji {
  font-size: 36px;
  margin-bottom: 8px;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-md);
}

.modal h3 {
  margin-bottom: 14px;
  font-size: 17px;
}

.modal label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
  margin-top: 10px;
}

.modal input,
.modal select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
}

.modal input:focus,
.modal select:focus {
  border-color: var(--accent);
}

.modal-buttons {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  justify-content: flex-end;
}

.modal-buttons button {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
}

.modal-buttons .save-btn {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.name-modal {
  position: fixed;
  inset: 0;
  background: rgba(91, 61, 143, 0.3);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.name-modal-inner {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px 24px;
  max-width: 360px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.name-modal-inner h2 {
  font-size: 22px;
  margin-bottom: 6px;
}

.name-modal-inner p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 16px;
}

.name-modal-inner input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 16px;
  text-align: center;
  outline: none;
  margin-bottom: 12px;
}

.name-modal-inner input:focus {
  border-color: var(--accent);
}

.name-modal-inner button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
}

.name-modal-inner button:disabled {
  opacity: 0.5;
}

@media (max-width: 500px) {
  .form-options {
    flex-direction: column;
  }

  .form-options select,
  .form-options input[type="date"] {
    width: 100%;
  }
}