:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #6b7280;
  --border: #e2e4e8;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fca5a5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.view {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.hidden {
  display: none !important;
}

.muted {
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

/* 로그인 */
.login-card {
  margin-top: 15vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 {
  margin: 0;
}

/* 상단바 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.topbar h1 {
  margin: 0;
  font-size: 1.6rem;
}
.topbar-actions {
  display: flex;
  gap: 4px;
}

.notify-result {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.notify-result .preview {
  margin: 8px 0 0;
  padding: 10px;
  background: var(--bg);
  border-radius: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* 입력 공통 */
input[type="text"],
input[type="password"],
input[type="date"] {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}
input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  border-color: var(--accent);
}

button {
  font-size: 1rem;
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button:hover {
  background: var(--accent-hover);
}
.link-btn {
  background: none;
  color: var(--muted);
  padding: 6px 8px;
}
.link-btn:hover {
  background: none;
  color: var(--text);
  text-decoration: underline;
}

/* 추가 폼 */
.add-form {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  align-items: center;
}
@media (max-width: 520px) {
  .add-form {
    grid-template-columns: 1fr;
  }
}

.error {
  color: var(--danger);
  margin: 8px 2px 0;
  font-size: 0.9rem;
}

/* 목록 */
.task-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.empty {
  margin-top: 24px;
  text-align: center;
}

.task {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}
.task.overdue {
  border-color: var(--danger-border);
  background: var(--danger-bg);
}
.task.completed {
  opacity: 0.6;
}

.task input[type="checkbox"] {
  width: 20px;
  height: 20px;
  flex: none;
  cursor: pointer;
}

.task-main {
  flex: 1;
  min-width: 0;
}
.task-content {
  word-break: break-word;
}
.task.completed .task-content {
  text-decoration: line-through;
}
.task-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 2px;
}
.badge-overdue {
  color: var(--danger);
  font-weight: 600;
}

.task-actions {
  display: flex;
  gap: 4px;
  flex: none;
}
.task-actions .link-btn {
  font-size: 0.85rem;
  padding: 4px 6px;
}

/* 인라인 수정 */
.edit-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  flex: 1;
}
.edit-row .edit-buttons {
  display: flex;
  gap: 4px;
}
@media (max-width: 520px) {
  .edit-row {
    grid-template-columns: 1fr;
  }
}