/* 나만의 메모장 스타일.
   색은 전부 CSS 변수로 두고 [data-theme] 로 라이트/다크를 전환한다. */

:root {
    --bg: #ffffff;
    --fg: #1f2328;
    --muted: #5c636a;          /* 흰 배경 대비 5.8:1 */
    --panel: #f1f3f5;
    --card-bg: #fbfbfc;
    --border: #8b9198;         /* 흰 배경 대비 3.1:1 (WCAG 1.4.11) */
    --border-soft: #d7dade;    /* 장식용 구분선. 대비 요건 없는 곳에만 */
    --pin-bg: #fff8e8;
    --pin-border: #b8791a;
    --code-bg: #f0f1f3;
    --mark-bg: #ffe89a;
    --mark-fg: #1f2328;
    --chip-bg: #e9ecef;
    --chip-fg: #3d4349;
    --chip-active-bg: #0a58ca; /* 흰 글자 대비 6.3:1 */
    --chip-active-fg: #ffffff;
    --focus: #0a58ca;
    --danger: #b02a37;
    --pin-fg: #8a5a0b;         /* 흰 배경 대비 4.6:1 */
    --btn-fg: #343a40;
    --ok-bg: #0f5132;
    --err-bg: #842029;
}

[data-theme='dark'] {
    --bg: #16181c;
    --fg: #e8eaed;
    --muted: #a8aeb5;          /* 어두운 배경 대비 6.4:1 */
    --panel: #22252b;
    --card-bg: #1c1f24;
    --border: #737b85;         /* 다크 배경 대비 3.2:1 */
    --border-soft: #333840;
    --pin-bg: #2a2418;
    --pin-border: #d1a04a;
    --code-bg: #2a2e35;
    --mark-bg: #6b5a13;
    --mark-fg: #fff6c2;
    --chip-bg: #2d3138;
    --chip-fg: #d5d9de;
    --chip-active-bg: #4c8dff;
    --chip-active-fg: #10131a;
    --focus: #7aa7ff;
    --danger: #e4707c;
    --pin-fg: #e0a94a;         /* 다크 배경 대비 7.4:1 */
    --btn-fg: #dfe3e8;
    --ok-bg: #146c43;
    --err-bg: #b02a37;
}

body {
    background-color: var(--bg);
    color: var(--fg);
}

/* 포커스 표시를 모든 조작 요소에 일관되게 준다. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--panel);
    color: var(--fg);
    padding: 10px 16px;
    z-index: 100;
}
.skip-link:focus {
    left: 8px;
    top: 8px;
}

.wrap {
    max-width: 880px;
    margin: 28px auto 80px;
    padding: 0 16px;
}

/* ------------------------------------------------------------- 상단 */

.topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.topbar h1 {
    font-weight: 700;
    font-size: 1.9rem;
    margin: 0;
}
.topbar h1 .ver {
    background-color: var(--chip-active-bg);
    color: var(--chip-active-fg);
    padding: 2px 8px;
    font-size: 1rem;
    border-radius: 4px;
    vertical-align: middle;
}
.topbar .spacer {
    margin-left: auto;
}

/* ------------------------------------------------------------- 작성 폼 */

.writer {
    background-color: var(--panel);
    padding: 22px;
    border-radius: 8px;
    border: 1px solid var(--border);
}
.writer .field {
    margin-bottom: 12px;
}
.writer label,
.toolbar label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.hint {
    color: var(--muted);
    font-size: 0.85rem;
}
#char-count.over {
    color: var(--danger);
    font-weight: 600;
}
.field-error {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 4px;
    min-height: 1em;
}

input.form-control,
textarea.form-control,
select.form-select {
    background-color: var(--card-bg);
    color: var(--fg);
    border-color: var(--border);
}
input.form-control::placeholder,
textarea.form-control::placeholder {
    color: var(--muted);
}
[aria-invalid='true'] {
    border-color: var(--danger) !important;
}

/* ------------------------------------------------------------- 도구 모음 */

.toolbar {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-top: 26px;
    flex-wrap: wrap;
}
.toolbar .search-field { max-width: 280px; }
.toolbar .sort-field { max-width: 150px; }

/* marked/DOMPurify 가 없을 때 쓰는 평문 폴백. 인라인 style 을 쓰지 않는다. */
.plain-fallback { white-space: pre-wrap; margin: 0; }

.toolbar .count {
    color: var(--muted);
    font-size: 0.9rem;
    margin-left: auto;
    white-space: nowrap;
    padding-bottom: 6px;
}

.tagbar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
    padding: 0;
    list-style: none;
}
.tagbar li {
    display: block;
}

.chip {
    background-color: var(--chip-bg);
    color: var(--chip-fg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 5px 12px;
    font: inherit;
    font-size: 0.84rem;
    line-height: 1.3;
    cursor: pointer;
    min-height: 32px;
}
.chip[aria-pressed='true'] {
    background-color: var(--chip-active-bg);
    color: var(--chip-active-fg);
    border-color: var(--chip-active-bg);
}

/* ------------------------------------------------------------- 카드 */

.cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-top: 16px;
    padding: 0;
    list-style: none;
}
@media (max-width: 640px) {
    .cards { grid-template-columns: 1fr; }
}

.memo-card {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--fg);
}
.memo-card.pinned {
    border-color: var(--pin-border);
    border-left-width: 4px;
    background-color: var(--pin-bg);
}
.memo-card .title {
    font-weight: 700;
    font-size: 1.08rem;
    margin: 0 0 6px;
    word-break: break-word;
}
.memo-card .content {
    margin: 6px 0;
    word-break: break-word;
    overflow-wrap: anywhere;
}
.memo-card .content > *:last-child { margin-bottom: 0; }
.memo-card .content pre {
    background-color: var(--code-bg);
    border-radius: 4px;
    padding: 10px;
    overflow-x: auto;
}
.memo-card .content code {
    background-color: var(--code-bg);
    border-radius: 4px;
    padding: 1px 4px;
}
.memo-card .content pre code { padding: 0; }
.memo-card .content img { max-width: 100%; height: auto; }
.memo-card .content blockquote {
    border-left: 3px solid var(--border);
    padding-left: 12px;
    margin-left: 0;
    color: var(--muted);
}
.memo-card .content table {
    width: 100%;
    border-collapse: collapse;
    display: block;
    overflow-x: auto;
}
.memo-card .content th,
.memo-card .content td {
    border: 1px solid var(--border);
    padding: 4px 8px;
}
.memo-card .meta {
    color: var(--muted);
    font-size: 0.78rem;
    margin-top: 8px;
}
.memo-card .tags {
    margin: 8px 0 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.btn-pin,
.btn-quiet {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--btn-fg);
}
.btn-pin { color: var(--pin-fg); border-color: var(--pin-fg); }
.btn-pin:hover, .btn-quiet:hover { background: var(--chip-bg); color: var(--fg); }

.memo-card .buttons {
    margin-top: 12px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* 터치 기기에서는 버튼을 충분히 키운다 (WCAG 2.5.8). */
@media (pointer: coarse) {
    .memo-card .buttons .btn { min-height: 44px; padding-inline: 16px; }
    .chip { min-height: 40px; padding: 9px 14px; }
}

/* ------------------------------------------------------------- 상태 표시 */

.hidden { display: none !important; }

.empty,
.list-error {
    color: var(--muted);
    text-align: center;
    margin-top: 30px;
    grid-column: 1 / -1;
}
.list-error { color: var(--danger); }

.skeleton {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px;
    background-color: var(--card-bg);
}
.skeleton .bar {
    height: 12px;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--border), var(--panel), var(--border));
    background-size: 200% 100%;
    animation: shimmer 1.2s linear infinite;
    margin-bottom: 10px;
}
.skeleton .bar.short { width: 45%; }
@keyframes shimmer {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
    .skeleton .bar { animation: none; }
}

.cards.loading { opacity: 0.55; transition: opacity 120ms linear; }
@media (prefers-reduced-motion: reduce) { .cards.loading { transition: none; } }

.more { text-align: center; margin-top: 22px; }

mark {
    padding: 0;
    background-color: var(--mark-bg);
    color: var(--mark-fg);
}

/* ------------------------------------------------------------- 토스트 */

.toasts {
    position: fixed;
    left: 50%;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1000;
    width: min(92vw, 420px);
}
.toast-item {
    padding: 12px 16px;
    border-radius: 8px;
    color: #fff;
    background-color: var(--ok-bg);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    gap: 12px;
}
.toast-item.error { background-color: var(--err-bg); }
.toast-item .toast-action {
    margin-left: auto;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #fff;
    border-radius: 6px;
    padding: 4px 10px;
    font: inherit;
    font-size: 0.85rem;
    cursor: pointer;
}

.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;
}

/* ------------------------------------------------------------- 기타 */

.noscript-warning {
    background: var(--err-bg);
    color: #fff;
    padding: 12px 16px;
    margin: 0;
    text-align: center;
}

.admin {
    margin-top: 28px;
    color: var(--muted);
    font-size: 0.9rem;
}
.admin summary {
    cursor: pointer;
    padding: 6px 0;
}
.admin .field { margin: 10px 0; }

/* 오류 토스트는 알림 토스트 위에 쌓인다. */
.toasts.alerts { bottom: calc(90px + env(safe-area-inset-bottom, 0px)); }

/* ------------------------------------------------- 공유 / 잠금 / 타임캡슐 */

.burn-notice {
    background: var(--err-bg);
    color: #fff;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 18px;
}

.locked-note {
    color: var(--pin-fg);
    font-weight: 600;
}

.memo-card.locked {
    border-style: dashed;
    border-color: var(--pin-fg);
}
.memo-card.encrypted .title::before {
    content: '🔒 ';
}

/* 위키 링크 */
.wikilink {
    color: var(--focus);
    text-decoration: underline;
    text-underline-offset: 2px;
    cursor: pointer;
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
}
.wikilink.missing {
    color: var(--muted);
    text-decoration-style: dashed;
}

/* ------------------------------------------------- 패널 / 팔레트 / 그래프 */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 16px;
    z-index: 900;
    overflow-y: auto;
}

.panel {
    background: var(--bg);
    color: var(--fg);
    border: 1px solid var(--border);
    border-radius: 10px;
    width: min(720px, 100%);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}
.panel-head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border);
}
.panel-head h2 { margin: 0; font-size: 1.15rem; }
.panel-head .btn { margin-left: auto; }
.panel-body { padding: 18px; }
.panel-body section { margin-bottom: 18px; }
.panel-body h3 { font-size: 0.95rem; margin: 0 0 8px; }
.panel-body hr { border: 0; border-top: 1px solid var(--border); margin: 18px 0; }

.menu-item { display: block; width: 100%; text-align: left; margin-bottom: 6px; }
.checkbox { display: block; margin: 10px 0; cursor: pointer; }
.checkbox input { margin-right: 6px; }
.share-output { margin-top: 10px; }
.share-output input { margin-bottom: 8px; }

/* 명령 팔레트 */
.palette-back { align-items: flex-start; padding-top: 12vh; }
.palette { width: min(560px, 100%); padding: 12px; }
.palette input { margin-bottom: 10px; }
.palette-list { list-style: none; margin: 0; padding: 0; max-height: 50vh; overflow-y: auto; }
.palette-item {
    padding: 9px 12px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    gap: 10px;
    align-items: baseline;
}
.palette-item.active { background: var(--chip-active-bg); color: var(--chip-active-fg); }
.palette-hint { margin-left: auto; font-size: 0.8rem; opacity: 0.8; }
.palette-empty { padding: 12px; color: var(--muted); }

/* 연결 그래프 */
.graph-wrap { overflow-x: auto; }
.graph { width: 100%; height: auto; min-width: 480px; }
.graph-edge { stroke: var(--border); stroke-width: 1.4; }
.graph-node circle { fill: var(--chip-active-bg); stroke: var(--bg); stroke-width: 2; cursor: pointer; }
.graph-node:hover circle, .graph-node:focus circle { fill: var(--pin-fg); }
.graph-node text { fill: var(--fg); font-size: 11px; pointer-events: none; }
.graph-node:focus { outline: none; }
.graph-node:focus circle { stroke: var(--focus); stroke-width: 3; }

/* 활동 히트맵 */
.heatmap-wrap { overflow-x: auto; }
.heatmap { width: 100%; height: auto; min-width: 520px; }
.heat { fill: var(--chip-bg); }
.heat.level-1 { fill: #9be9a8; }
.heat.level-2 { fill: #40c463; }
.heat.level-3 { fill: #30a14e; }
.heat.level-4 { fill: #216e39; }

.summary { display: flex; gap: 22px; flex-wrap: wrap; margin: 0 0 18px; }
.summary dt { font-size: 0.8rem; color: var(--muted); }
.summary dd { margin: 0; font-size: 1.4rem; font-weight: 700; }

/* 수정 이력 */
.revision { border: 1px solid var(--border); border-radius: 8px; padding: 12px; }
.revision h3 { margin-bottom: 6px; }
.diff {
    background: var(--code-bg);
    border-radius: 6px;
    padding: 10px;
    overflow-x: auto;
    font-size: 0.85rem;
    margin: 8px 0;
}
.diff-added { color: #1a7f37; }
.diff-removed { color: var(--danger); }
[data-theme='dark'] .diff-added { color: #56d364; }

/* 이동한 메모를 잠깐 강조 */
.memo-card.flash { outline: 3px solid var(--focus); outline-offset: 3px; }