/*
 * Invoice Studio — 스타일 전부.
 *
 * 원칙
 *   - 외부 폰트를 부르지 않는다. 라이선스 문제도 없고, 렌더를 막는 요청도 없다.
 *   - 색은 토큰으로만 쓴다. 다크 모드는 토큰 값만 바꾼다.
 *   - **문서(.doc)만은 다크 모드를 따르지 않는다.** 종이는 언제나 흰색이고,
 *     화면에서 어둡게 보이던 것이 인쇄하면 하얗게 나오는 편이 훨씬 나쁘다.
 *   - 빌드 도구 없음. 이 파일이 그대로 배포된다.
 */

:root {
	--bg:        #ffffff;
	--bg-alt:    #f6f7f9;
	--bg-sunk:   #eef0f3;
	--fg:        #16191d;
	--fg-soft:   #5a6270;
	--line:      #dde1e7;
	--accent:    #1f5fd6;
	--accent-fg: #ffffff;
	--good:      #15754f;
	--code-bg:   #f2f4f7;
	--radius:    10px;
	--wrap:      1240px;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg:      #0f1216;
		--bg-alt:  #151a20;
		--bg-sunk: #1b222a;
		--fg:      #e7eaee;
		--fg-soft: #9aa4b2;
		--line:    #262e38;
		--accent:  #6fa4ff;
		--accent-fg: #0f1216;
		--good:    #4bbd8b;
		--code-bg: #161d25;
	}
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans KR", sans-serif;
}

h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.011em; margin: 0 0 .5em; }
h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.5rem); }
h2 { font-size: clamp(1.25rem, 1.05rem + .9vw, 1.6rem); margin-top: 0; }
h3 { font-size: 1.05rem; }
p  { margin: 0 0 1em; }

a { color: var(--accent); text-underline-offset: 2px; }

code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: .92em; }
code { background: var(--code-bg); padding: .12em .36em; border-radius: 4px; }
pre  { margin: 0; padding: 1rem 1.1rem; overflow-x: auto; background: var(--code-bg); }
pre code { background: none; padding: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }
.hint { color: var(--fg-soft); font-size: .86rem; }

.skip { position: absolute; left: -9999px; top: 0; background: var(--accent); color: var(--accent-fg); padding: .6rem 1rem; z-index: 10; }
.skip:focus { left: 0; }

/* ------------------------------------------------------------------ 머리·꼬리 */

.site-head { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-head__in { display: flex; align-items: center; gap: 1.5rem; min-height: 58px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 650; color: var(--fg); text-decoration: none; }
.brand__mark { width: 18px; height: 18px; border-radius: 5px; background: linear-gradient(135deg, var(--accent), var(--good)); }
.nav { display: flex; gap: 1.15rem; margin-left: auto; flex-wrap: wrap; font-size: .93rem; }
.nav a { color: var(--fg-soft); text-decoration: none; }
.nav a:hover { color: var(--fg); text-decoration: underline; }

.site-foot { border-top: 1px solid var(--line); background: var(--bg-alt); margin-top: 3rem; padding: 2.5rem 0 3rem; font-size: .93rem; }
.foot-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.75rem; }
.foot-cols ul { list-style: none; margin: .4rem 0 0; padding: 0; }
.foot-cols li { margin: .25rem 0; }
.foot-cols p { color: var(--fg-soft); margin: .4rem 0 0; }
.foot-note { color: var(--fg-soft); margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }

/* ------------------------------------------------------------------ 앱 */

.app__bar { border-bottom: 1px solid var(--line); background: var(--bg-alt); position: sticky; top: 0; z-index: 4; }
.app__bar-in { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; padding-top: .6rem; padding-bottom: .6rem; }
.app__types { display: flex; gap: .15rem; flex-wrap: wrap; }
.app__types label { font-size: .88rem; padding: .35rem .7rem; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; color: var(--fg-soft); background: var(--bg); }
.app__types label:has(input:checked) { border-color: var(--accent); color: var(--fg); font-weight: 600; }
.app__types input { margin-right: .35rem; }
.app__actions { display: flex; gap: .45rem; align-items: center; margin-left: auto; flex-wrap: wrap; }
.app__saved { color: var(--fg-soft); font-size: .82rem; }

.app__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 2rem; padding-top: 1.5rem; padding-bottom: 1.5rem; align-items: start; }
@media (max-width: 1000px) { .app__grid { grid-template-columns: 1fr; } }

.editor fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem 1.1rem; margin: 0 0 1.1rem; }
.editor legend { padding: 0 .4rem; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--fg-soft); font-weight: 700; }

.row { display: grid; gap: .75rem; }
.row--2 { grid-template-columns: 1fr 1fr; }
.row--3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 620px) { .row--2, .row--3 { grid-template-columns: 1fr; } }

.field { display: block; margin-bottom: .75rem; }
.field > span { display: block; font-size: .84rem; color: var(--fg-soft); margin-bottom: .25rem; }
.field input, .field textarea, .field select {
	width: 100%; padding: .5rem .65rem; border: 1px solid var(--line);
	border-radius: 8px; background: var(--bg); color: var(--fg); font: inherit; font-size: .95rem;
}
.field textarea { resize: vertical; }
.field input:focus-visible, .field textarea:focus-visible, .field select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.check-inline { display: flex; align-items: center; gap: .45rem; font-size: .9rem; color: var(--fg-soft); }

.item { display: grid; grid-template-columns: 1fr 5rem 8rem 1.6rem; gap: .6rem; align-items: start; margin-bottom: .5rem; }
@media (max-width: 620px) { .item { grid-template-columns: 1fr 1fr; } .item .field--grow { grid-column: 1 / -1; } }
.item .field { margin-bottom: 0; }
.item__del { align-self: end; margin-bottom: .35rem; background: none; border: 1px solid var(--line); color: var(--fg-soft); border-radius: 6px; cursor: pointer; height: 2.1rem; }
.item__del:hover { color: var(--fg); }

.btn {
	display: inline-block; padding: .55rem 1rem; border-radius: 8px;
	background: var(--accent); color: var(--accent-fg); text-decoration: none;
	font-weight: 600; border: 1px solid transparent; cursor: pointer; font-size: .92rem;
	font-family: inherit;
}
.btn:hover { filter: brightness(1.08); }
.btn--ghost { background: transparent; color: var(--accent); border-color: var(--line); }
.btn--sm { padding: .35rem .75rem; font-size: .85rem; }

.preview { position: sticky; top: 4.5rem; }
.preview__inner { overflow-x: auto; background: var(--bg-sunk); padding: 1rem; border-radius: var(--radius); }
.preview__hint { margin-top: .6rem; }

/* ------------------------------------------------------------------ 문서 (= 인쇄물)
 *
 * 여기부터는 화면 테마를 따르지 않는다. 항상 흰 종이에 검은 글씨다.
 * 치수는 mm 와 pt 로 쓴다 — 인쇄에서 그대로 맞아떨어지게 하기 위해서다.
 * 폭 186mm 는 A4(210mm)에서 좌우 12mm 여백을 뺀 값이고, US Letter(216mm)에도 들어간다.
 */

.doc {
	background: #fff;
	color: #111418;
	width: 100%;
	max-width: 186mm;
	margin: 0 auto;
	padding: 14mm 12mm;
	box-shadow: 0 1px 3px rgba(0,0,0,.12), 0 8px 24px rgba(0,0,0,.08);
	font-size: 10.5pt;
	line-height: 1.5;
}

.doc .d-head { display: flex; justify-content: space-between; gap: 12mm; align-items: flex-start; margin-bottom: 10mm; }
.doc .d-brand { display: flex; gap: 5mm; align-items: flex-start; }
.doc .d-logo { max-width: 34mm; max-height: 20mm; object-fit: contain; }
.doc .d-me strong { display: block; font-size: 12pt; margin-bottom: 1mm; }
.doc .d-me div { color: #444b55; }

.doc .d-title { text-align: right; flex: none; }
.doc .d-title h1 { font-size: 20pt; letter-spacing: -0.01em; margin: 0 0 3mm; text-transform: none; }
.doc .d-meta { margin-left: auto; border-collapse: collapse; font-size: 9.5pt; }
.doc .d-meta th { text-align: right; color: #6b7280; font-weight: 500; padding: .6mm 3mm .6mm 0; white-space: nowrap; }
.doc .d-meta td { text-align: right; padding: .6mm 0; white-space: nowrap; }

.doc .d-party { margin-bottom: 8mm; }
.doc .d-party h2 { font-size: 8.5pt; text-transform: uppercase; letter-spacing: .08em; color: #6b7280; margin: 0 0 1.5mm; }
.doc .d-party strong { font-size: 11pt; }
.doc .d-party div { color: #444b55; }

.doc .d-items { width: 100%; border-collapse: collapse; margin-bottom: 8mm; }
.doc .d-items th { font-size: 8.5pt; text-transform: uppercase; letter-spacing: .06em; color: #6b7280; font-weight: 600; padding: 0 0 2mm; border-bottom: 1px solid #c9ced6; }
.doc .d-items td { padding: 2.5mm 0; border-bottom: 1px solid #e6e9ee; vertical-align: top; }
.doc .d-items .d-num { text-align: right; white-space: nowrap; padding-left: 6mm; width: 1%; }
.doc .d-items .d-desc { width: 60%; }
.doc .d-items .d-empty { color: #9aa1ac; }

.doc .d-foot { display: flex; justify-content: space-between; gap: 12mm; align-items: flex-start; }
.doc .d-notes { flex: 1 1 auto; font-size: 9.5pt; color: #444b55; }
.doc .d-notes h3 { font-size: 8.5pt; text-transform: uppercase; letter-spacing: .06em; color: #6b7280; margin: 4mm 0 1mm; }
.doc .d-notes p { margin: 0; }
.doc .d-taxnote { border-left: 2px solid #c9ced6; padding-left: 3mm; margin-bottom: 3mm !important; }

.doc .d-totals { flex: none; min-width: 62mm; border-collapse: collapse; }
.doc .d-totals th { text-align: left; font-weight: 500; color: #6b7280; padding: 1.2mm 6mm 1.2mm 0; white-space: nowrap; }
.doc .d-totals td { text-align: right; padding: 1.2mm 0; white-space: nowrap; }
.doc .d-totals .d-total th, .doc .d-totals .d-total td { border-top: 1px solid #c9ced6; font-weight: 700; font-size: 11.5pt; color: #111418; padding-top: 2mm; }

/* ------------------------------------------------------------------ 본문 페이지 */

.band { padding: 2.5rem 0; }
.band--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.lede { font-size: 1.08rem; color: var(--fg-soft); max-width: 64ch; }
.prose { max-width: 72ch; }
.crumb { font-size: .88rem; color: var(--fg-soft); margin-bottom: .3rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.25rem; }
.cards article { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.15rem 1.25rem; }
.cards h3 { margin-top: 0; }
.cards p { margin-bottom: 0; color: var(--fg-soft); }

.notes, .checklist { max-width: 74ch; padding-left: 1.2rem; }
.notes li { margin-bottom: .55rem; color: var(--fg-soft); }
.notes li strong { color: var(--fg); }
.checklist { list-style: none; padding-left: 0; }
.checklist li { padding-left: 1.6rem; position: relative; }
.checklist li::before { content: "□"; position: absolute; left: 0; color: var(--fg-soft); }

.faq { max-width: 74ch; }
.faq dt { font-weight: 650; margin-top: 1.4rem; }
.faq dd { margin: .35rem 0 0; color: var(--fg-soft); }

.code { position: relative; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 0 0 1.25rem; background: var(--code-bg); max-width: 72ch; }
.code__cap { padding: .5rem .9rem; font-size: .82rem; color: var(--fg-soft); border-bottom: 1px solid var(--line); }
.code__copy { position: absolute; top: .5rem; right: .5rem; padding: .3rem .7rem; font-size: .8rem; cursor: pointer; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--fg-soft); font-family: inherit; }
.code__copy:hover { color: var(--fg); }

.ad { margin: 2rem auto; max-width: var(--wrap); padding: 0 1.25rem; text-align: center; }
.ad__label { display: block; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--fg-soft); margin-bottom: .3rem; }

/* ------------------------------------------------------------------ 허브 */

.hero { padding: 3.25rem 0 2.5rem; background: linear-gradient(180deg, var(--bg-alt), var(--bg)); border-bottom: 1px solid var(--line); }
.hero h1 { max-width: 22ch; }
.hero__meta { color: var(--fg-soft); font-size: .9rem; margin-top: .9rem; }

.cards--tools article { display: flex; flex-direction: column; }
.cards--tools h3 { margin-bottom: .1rem; font-size: 1.15rem; }
.tool-verb { color: var(--accent); font-size: .85rem; font-weight: 600; margin: 0 0 .5rem; }

.why { max-width: 74ch; margin: 1.5rem 0 0; }
.why dt { font-weight: 650; margin-top: 1.2rem; }
.why dd { margin: .25rem 0 0; color: var(--fg-soft); }

/* ------------------------------------------------------------------ 도구 화면 추가분 */

.app__title { font-size: 1.05rem; margin: 0; font-weight: 650; }
.row-actions { display: flex; gap: .5rem; flex-wrap: wrap; }

/* 줄 항목 — 도구마다 열 구성이 다르다 */
.item--day { grid-template-columns: 9.5rem 6.5rem 6.5rem 6rem 1fr 1.6rem; }
.item--exp { grid-template-columns: 9.5rem 10rem 1fr 8rem 1.6rem; }
@media (max-width: 900px) {
	.item--day, .item--exp { grid-template-columns: 1fr 1fr; }
	.item--day .field--grow, .item--exp .field--grow { grid-column: 1 / -1; }
}

/* ------------------------------------------------------------------ 문서 추가분 */

.doc .d-two { display: flex; gap: 10mm; }
.doc .d-two > * { flex: 1 1 0; }

.doc .d-items--tight { font-size: 9.5pt; }
.doc .d-items--tight td { padding: 1.6mm 0; }
.doc .d-items--tight th:not(:first-child), .doc .d-items--tight td:not(:first-child) { padding-left: 4mm; }
.doc .d-items--tight td:first-child, .doc .d-items--tight th:first-child { white-space: nowrap; }

.doc .d-foot--top { margin-bottom: 8mm; align-items: flex-start; }

.doc .d-signs { display: flex; gap: 12mm; margin-top: 14mm; }
.doc .d-sign { flex: 1 1 0; max-width: 70mm; }
.doc .d-sign__line { display: block; border-bottom: 1px solid #9aa1ac; height: 10mm; }
.doc .d-sign__label { display: block; margin-top: 1.5mm; font-size: 8.5pt; color: #6b7280; }

/* ------------------------------------------------------------------ 인쇄
 *
 * 화면의 모든 것을 숨기고 문서만 남긴다. 미리보기와 인쇄물이 같은 요소·같은
 * 스타일이라는 것이 이 도구의 핵심이다 — 별도의 "PDF 생성기" 가 없으므로
 * 어긋날 여지도 없다.
 */
@media print {
	@page { margin: 12mm; }

	html, body { background: #fff !important; }

	.site-head, .site-foot, .app__bar, .editor, .preview__hint,
	.band, .ad, .skip, .hint { display: none !important; }

	.app__grid { display: block; padding: 0; }
	.wrap { max-width: none; padding: 0; }
	.preview { position: static; }
	.preview__inner { background: none; padding: 0; overflow: visible; border-radius: 0; }

	.doc {
		box-shadow: none;
		max-width: none;
		width: auto;
		margin: 0;
		padding: 0;
	}

	/* 표가 페이지 경계에서 잘리지 않게 */
	.doc .d-items tr { break-inside: avoid; }
	.doc .d-foot { break-inside: avoid; }
	.doc .d-signs { break-inside: avoid; }
	.doc .d-items--tight thead { display: table-header-group; }   /* 여러 쪽에 걸치면 머리글을 반복한다 */
}