/* ===== 기본 설정 (혜택on 무료도구 공통 디자인 시스템) ===== */
:root {
  --color-bg: #f2f3f5;
  --color-card: #ffffff;
  --color-text: #1c1c1e;
  --color-sub: #8a8f98;
  --color-primary: #171717;
  --color-primary-dark: #000000;
  --color-accent: #1481fa;
  --color-accent-tint: #e7f1ff;
  --color-border: #e6e7eb;
  --color-danger: #e0245e;
  --color-success: #12b76a;
  --color-success-tint: #e5f9ee;
  --color-warning: #f79009;
  --color-warning-tint: #fff4e5;
  --radius: 22px;
  --shadow-card: 0 2px 14px rgba(20, 20, 30, 0.06);
  --shadow-pop: 0 6px 20px rgba(20, 20, 30, 0.10);
}

* { box-sizing: border-box; }

/* hidden 속성은 무조건 숨김 — 요소별 display 규칙(flex/table 등)에 가려지지 않도록. modern-normalize와 동일 */
[hidden] { display: none !important; }

html { font-size: 17px; }

body {
  margin: 0;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

/* ===== 상단 돌아가기 바 ===== */
.tool-back-bar {
  display: block;
  padding: 10px 16px;
  background: #1F4E79;
  color: #fff;
  font-size: 0.85rem;
  text-decoration: none;
  text-align: center;
}
.tool-back-bar:hover { background: #17395c; }

/* ===== 헤더 ===== */
.app-header { text-align: center; padding: 24px 16px 12px; }
.app-title-row { display: flex; justify-content: center; }
.app-header h1 {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 1.5rem;
  margin: 0 0 6px;
}
.app-icon { flex-shrink: 0; }
.app-title-sub-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-sub);
  background: #eaebee;
  padding: 4px 10px;
  border-radius: 999px;
}
.app-sub { font-size: 0.95rem; color: var(--color-sub); margin: 0; }

/* ===== 안내 바 ===== */
.notice-bar {
  max-width: 1320px;
  margin: 0 auto 18px;
  padding: 0 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 16px;
  text-align: center;
}
.notice-bar p { margin: 0; font-size: 0.85rem; color: var(--color-sub); }
.notice-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-tint);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ===== 메인 레이아웃 ===== */
.app-main { max-width: 1320px; margin: 0 auto; padding: 0 18px 40px; }
.layout-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }

.panel {
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 22px 20px;
  /* 그리드 항목이 min-content(시나리오 표의 min-width:420px 등)로 부풀어
     페이지가 가로 스크롤되고, 그 여파로 입력 패널 폭이 줄며 필드 설명이
     재줄바꿈돼 타이핑마다 세로 리플로우가 나던 문제 방지. */
  min-width: 0;
}
.panel-title { font-size: 1.05rem; font-weight: 800; margin: 0 0 18px; }
.sub-heading { font-size: 0.95rem; font-weight: 800; margin: 0 0 10px; }

/* ===== 입력 필드 ===== */
.field-group { margin-bottom: 20px; min-width: 0; }
.field-group.small { margin-bottom: 14px; }
.field-label { display: block; font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.field-label .num { color: var(--color-accent); }
.field-label .opt { font-weight: 400; color: var(--color-sub); font-size: 0.85rem; }

.money-input {
  display: flex;
  align-items: center;
  border-radius: 16px;
  overflow: hidden;
  background: #f2f3f5;
}
.money-input.has-error { box-shadow: inset 0 0 0 1.5px var(--color-danger); }
.num-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  padding: 13px 14px;
  font-size: 1.1rem;
  min-height: 46px;
  text-align: right;
  font-weight: 700;
  color: var(--color-text);
}
.money-input .unit { padding: 0 14px; font-size: 1rem; color: var(--color-sub); white-space: nowrap; }
.num-input:focus { background: #eaf2ff; }

.field-hint { margin: 6px 0 0; font-size: 0.82rem; color: var(--color-sub); line-height: 1.4; }
.field-error { margin: 6px 0 0; font-size: 0.82rem; color: var(--color-danger); font-weight: 700; }
.field-error:empty { display: none; }
.field-error.is-warning { color: var(--color-warning); }
/* 타이핑 중 경고/에러가 떴다 사라져도 레이아웃이 밀리지 않도록 2줄분 공간 상시 확보
   (ID 특정성이 .field-error:empty 를 이겨 빈 상태에서도 표시된다) */
#variable-error,
#other-error {
  display: block;
  line-height: 1.45;
  min-height: 2.4rem;
}

/* ===== 고급 옵션 ===== */
.advanced-toggle {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 10px 0;
  cursor: pointer;
}
.advanced-panel { border-radius: 16px; background: #f7f8fa; padding: 14px; margin-bottom: 14px; }

/* ===== 버튼 ===== */
.calc-btn {
  display: block;
  width: 100%;
  min-height: 52px;
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  margin-top: 4px;
}
.calc-btn:active { background: var(--color-primary-dark); }
.live-hint { text-align: center; font-size: 0.8rem; color: var(--color-sub); margin: 8px 0 0; }
.reset-btn {
  display: block;
  width: 100%;
  min-height: 44px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-sub);
  background: transparent;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  margin-top: 6px;
}

/* ===== 히어로 결과 카드 ===== */
.hero-card {
  padding: 26px 22px;
  text-align: center;
  background: linear-gradient(160deg, #1481fa, #0d5fc4);
  border-radius: var(--radius);
  color: #fff;
  margin-bottom: 18px;
}
.hero-label { margin: 0; font-size: 0.95rem; opacity: 0.85; }
.hero-amount-row {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; flex-wrap: wrap; margin: 6px 0 10px;
}
.hero-amount { margin: 0; font-size: 2.3rem; font-weight: 900; letter-spacing: -0.02em; }
.hero-tier { font-size: 0.85rem; font-weight: 800; padding: 5px 12px; border-radius: 999px; background: rgba(255,255,255,0.2); }
.hero-tier.tone-success { background: var(--color-success); }
.hero-tier.tone-info { background: rgba(255,255,255,0.28); }
.hero-tier.tone-warning { background: var(--color-warning); }
.hero-note { margin: 0 0 16px; font-size: 0.85rem; opacity: 0.85; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.hero-stat { background: rgba(255,255,255,0.12); border-radius: 14px; padding: 10px 8px; }
.hero-stat-label { display: block; font-size: 0.78rem; opacity: 0.85; margin-bottom: 2px; }
.hero-stat-value { display: block; font-size: 1.2rem; font-weight: 800; }
.hero-stat-value.is-negative { color: #ffb3b8; }

.result-empty {
  padding: 28px 8px;
  text-align: center;
  color: var(--color-sub);
  font-size: 0.9rem;
  border: 1px dashed var(--color-border);
  border-radius: 16px;
}

/* ===== 비용 내역 ===== */
.breakdown-list { list-style: none; margin: 10px 0 20px; padding: 0; font-size: 0.95rem; }
.breakdown-list li {
  display: flex; justify-content: space-between;
  padding: 7px 0; border-bottom: 1px solid var(--color-border);
}
.breakdown-list li.total {
  font-weight: 800;
  border-top: 2px solid var(--color-text);
  border-bottom: none;
  margin-top: 4px;
  padding-top: 10px;
}
.breakdown-list li .negative { color: var(--color-danger); }
.breakdown-list li .positive { color: var(--color-success); }

/* ===== 리포트 카드 ===== */
.report-cards { list-style: none; margin: 0 0 20px; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.report-card {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; background: #f7f8fa; border-radius: 16px;
  border-left: 4px solid var(--color-border);
}
.report-card.tone-success { border-left-color: var(--color-success); background: var(--color-success-tint); }
.report-card.tone-warning { border-left-color: var(--color-warning); background: var(--color-warning-tint); }
.report-card.tone-info { border-left-color: var(--color-accent); background: var(--color-accent-tint); }
.report-icon { font-size: 1.3rem; line-height: 1; }
.report-body { flex: 1; min-width: 0; }
.report-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 4px; }
.report-row strong { font-size: 0.9rem; }
.report-tag {
  font-size: 0.78rem; font-weight: 800; padding: 3px 10px; border-radius: 999px;
  background: #eaebee; color: var(--color-sub); white-space: nowrap;
}
.tone-success .report-tag { background: var(--color-success); color: #fff; }
.tone-warning .report-tag { background: var(--color-warning); color: #fff; }
.tone-info .report-tag { background: var(--color-accent); color: #fff; }
.report-text { margin: 0; font-size: 0.85rem; color: var(--color-text); line-height: 1.5; }
.report-meta { margin: 6px 0 0; font-size: 0.75rem; color: var(--color-sub); }

/* ===== 하위 섹션 구분선 ===== */
.scenario-wrap,
.history-wrap { border-top: 1px solid var(--color-border); padding-top: 18px; }

/* ===== 시나리오 표 ===== */
.scenario-hint { margin: 0 0 12px; font-size: 0.82rem; color: var(--color-sub); }
.scenario-table-wrap { overflow-x: auto; }
.scenario-table {
  width: 100%; border-collapse: collapse; font-size: 0.83rem; white-space: nowrap; min-width: 420px;
}
.scenario-table th, .scenario-table td {
  text-align: right; padding: 8px 7px; border-bottom: 1px solid var(--color-border); color: var(--color-text);
}
.scenario-table th:first-child, .scenario-table td:first-child { text-align: left; }
.scenario-table thead th { color: var(--color-sub); font-weight: 700; }
.scenario-table tbody tr.is-base { background: var(--color-accent-tint); font-weight: 700; }
.scenario-table td.negative,
.history-table td.negative { color: var(--color-danger); }
.cell-badge { display: inline-block; font-size: 0.74rem; font-weight: 800; padding: 2px 8px; border-radius: 999px; }
.cell-badge.tone-success { background: var(--color-success); color: #fff; }
.cell-badge.tone-info { background: var(--color-accent); color: #fff; }
.cell-badge.tone-warning { background: var(--color-warning); color: #fff; }

/* ===== 계산 기록 ===== */
.history-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.history-clear-btn {
  border: none; background: transparent; color: var(--color-sub);
  font-size: 0.8rem; font-weight: 700; cursor: pointer;
}
.history-empty { font-size: 0.85rem; color: var(--color-sub); margin: 0; }
.history-table-wrap { overflow-x: auto; }
.history-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; white-space: nowrap; }
.history-table th, .history-table td {
  text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--color-border); color: var(--color-text);
}
.history-table th { color: var(--color-sub); font-weight: 700; }
.history-row-delete { border: none; background: transparent; color: var(--color-sub); cursor: pointer; font-size: 0.9rem; }

/* ===== 면책 안내 ===== */
.tool-disclaimer {
  max-width: 1320px;
  margin: 0 auto;
  padding: 14px 18px;
  background: var(--color-warning-tint);
  border: 1px solid var(--color-warning);
  border-radius: 16px;
  font-size: 0.83rem;
  color: #7a4708;
  line-height: 1.5;
}

/* ===== 접이식 (사용법 / FAQ) ===== */
.accordion {
  max-width: 1320px;
  margin: 14px auto 0;
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 4px 20px;
}
.accordion-summary {
  cursor: pointer; list-style: none; padding: 18px 0;
  font-size: 1rem; font-weight: 800; display: flex; align-items: center; gap: 8px;
}
.accordion-summary::-webkit-details-marker { display: none; }
.accordion-summary::before { content: "▸"; color: var(--color-sub); transition: transform 150ms ease; }
.accordion[open] .accordion-summary::before { transform: rotate(90deg); }
.accordion-body { padding-bottom: 20px; font-size: 0.92rem; color: var(--color-text); }
.accordion-body ol { margin: 0; padding-left: 20px; }
.accordion-body li { margin-bottom: 8px; }
.accordion-body p { margin: 0 0 10px; }

/* ===== 푸터 ===== */
.app-footer {
  text-align: center; font-size: 0.82rem; color: var(--color-sub);
  padding: 24px 16px 40px; max-width: 1320px; margin: 0 auto;
}
.app-footer p { margin: 4px 0; }

/* ===== 태블릿 (>=768px) ===== */
@media (min-width: 768px) {
  .layout-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .panel-input { grid-column: 1; grid-row: 1; }
  .panel-result { grid-column: 2; grid-row: 1; }
  .panel-report { grid-column: 1 / -1; grid-row: 2; }
}

/* ===== PC (>=1200px) : 3컬럼 ===== */
@media (min-width: 1200px) {
  .layout-grid { grid-template-columns: 340px minmax(0, 1fr) 400px; align-items: start; }
  .panel-input { grid-column: 1; grid-row: 1; }
  .panel-result { grid-column: 2; grid-row: 1; min-width: 0; }
  .panel-report { grid-column: 3; grid-row: 1; }
  .panel-input, .panel-report { position: sticky; top: 18px; }
}

/* ===== 모바일 / POS 가로형 ===== */
@media (max-width: 479px) {
  html { font-size: 16px; }
  .hero-amount { font-size: 1.95rem; }
}