/* =========================================================================
   사내 메일 서버 - 정적 템플릿 스타일
   외부 의존성 없음(바닐라). 색감은 Vuexy 톤을 참고.
   ========================================================================= */

:root {
  --primary: #7367f0;
  --primary-hover: #6358e6;
  --primary-soft: #ecebff;
  --success: #28c76f;
  --success-soft: #ddf6e8;
  --warning: #ff9f43;
  --warning-soft: #fff1e1;
  --danger: #ea5455;
  --danger-soft: #fce5e6;
  --info: #00cfe8;
  --info-soft: #d9f8fc;

  --bg: #f5f5f9;
  --card: #ffffff;
  --heading: #444050;
  --text: #6f6b7d;
  --muted: #b3b1bd;
  --border: #e6e6eb;
  --border-strong: #d9d8e0;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 8px rgba(47, 43, 61, 0.08);
  --shadow-lg: 0 6px 24px rgba(47, 43, 61, 0.16);
  --topbar-h: 60px;
  --sidebar-w: 240px;
  --list-w: 380px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Apple SD Gothic Neo", "Malgun Gothic", "맑은 고딕", sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }
svg { display: block; }

/* ---------- 공통 버튼 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  padding: 8px 16px; font-size: 14px; font-weight: 500;
  background: transparent; color: var(--text); transition: .15s;
  white-space: nowrap;
}
.btn:hover { background: rgba(115,103,240,.08); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 6px rgba(115,103,240,.3); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { border-color: var(--border-strong); }
.btn-outline:hover { background: #f3f2f7; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }
.btn-icon:hover { background: rgba(115,103,240,.08); color: var(--primary); }

/* ---------- 배지 ---------- */
.badge { display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; border-radius: 30px; padding: 2px 8px; line-height: 1.4; }
.badge-primary { background: var(--primary-soft); color: var(--primary); }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-danger  { background: var(--danger-soft);  color: var(--danger); }
.badge-info    { background: var(--info-soft);    color: #0bb6cc; }
.badge-count { min-width: 20px; height: 20px; padding: 0 6px; font-size: 11px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-success { background: var(--success); }
.dot-primary { background: var(--primary); }
.dot-info    { background: var(--info); }
.dot-danger  { background: var(--danger); }
.dot-warning { background: var(--warning); }

/* ---------- 상단바 ---------- */
.topbar {
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 16px;
  padding: 0 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 30;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--heading); font-size: 17px; }
.brand .brand-logo { width: 34px; height: 34px; border-radius: 8px; background: var(--primary);
  color: #fff; display: grid; place-items: center; box-shadow: 0 2px 8px rgba(115,103,240,.4); }
.topbar-spacer { flex: 1; }
.topbar-nav { display: flex; gap: 4px; }
.topbar-nav a { padding: 8px 14px; border-radius: var(--radius-sm); color: var(--text); font-weight: 500; display: flex; align-items: center; gap: 6px; }
.topbar-nav a:hover { background: #f3f2f7; }
.topbar-nav a.active { background: var(--primary-soft); color: var(--primary); }
.admin-chip { display: flex; align-items: center; gap: 10px; }
.admin-chip .name { font-weight: 600; color: var(--heading); line-height: 1.2; }
.admin-chip .mail { font-size: 12px; color: var(--muted); }
.avatar { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 600; color: #fff; flex-shrink: 0; font-size: 14px; }
.avatar-sm { width: 32px; height: 32px; font-size: 13px; }
.avatar-lg { width: 44px; height: 44px; font-size: 16px; }
/* 아바타 색상 변형 */
.av-1 { background: #7367f0; } .av-2 { background: #28c76f; } .av-3 { background: #ff9f43; }
.av-4 { background: #00cfe8; } .av-5 { background: #ea5455; } .av-6 { background: #826bf8; }

/* ===================== 메일 앱 레이아웃 ===================== */
.mail-app {
  display: grid;
  grid-template-columns: var(--sidebar-w) var(--list-w) 1fr;
  height: calc(100vh - var(--topbar-h));
  background: var(--bg);
}

/* ---------- 폴더 사이드바 ---------- */
.folders {
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow-y: auto;
}
.folders .compose-wrap { padding: 18px; }
.folder-list { padding: 0 12px; }
.folder-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--text); cursor: pointer; margin-bottom: 2px; transition: .12s;
}
.folder-item:hover { background: #f3f2f7; }
.folder-item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.folder-item .f-icon { width: 20px; height: 20px; flex-shrink: 0; }
.folder-item .f-name { flex: 1; }
.section-title { font-size: 11px; font-weight: 700; letter-spacing: .04em; color: var(--muted);
  text-transform: uppercase; padding: 16px 24px 8px; }
.label-item { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border-radius: var(--radius-sm);
  cursor: pointer; color: var(--text); }
.label-item:hover { background: #f3f2f7; }
.storage { margin-top: auto; padding: 18px; border-top: 1px solid var(--border); font-size: 13px; }
.storage .bar { height: 6px; border-radius: 3px; background: #eceaf4; overflow: hidden; margin: 8px 0 6px; }
.storage .bar > span { display: block; height: 100%; background: var(--primary); border-radius: 3px; }
.storage .meta { color: var(--muted); font-size: 12px; }

/* ---------- 메일 목록 ---------- */
.mail-list { background: var(--card); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden; }
.list-header { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.search-box { display: flex; align-items: center; gap: 8px; background: #f5f5f9;
  border: 1px solid transparent; border-radius: var(--radius-sm); padding: 8px 12px; }
.search-box:focus-within { background: #fff; border-color: var(--primary); }
.search-box svg { color: var(--muted); flex-shrink: 0; }
.search-box input { border: 0; outline: 0; background: transparent; width: 100%; font-size: 14px; color: var(--text); }
.list-tools { display: flex; align-items: center; gap: 6px; margin-top: 12px; }
.list-tools .count { margin-left: auto; font-size: 12px; color: var(--muted); }
.list-title { font-size: 18px; font-weight: 700; color: var(--heading); margin: 0 0 12px; display:flex; align-items:center; gap:8px;}

.mail-items { flex: 1; overflow-y: auto; }
.mail-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: .12s; position: relative;
}
.mail-item:hover { background: #faf9fd; box-shadow: var(--shadow); z-index: 1; }
.mail-item.unread { background: #fbfbfe; }
.mail-item.unread .mi-from, .mail-item.unread .mi-subject { font-weight: 700; color: var(--heading); }
.mail-item.selected { background: var(--primary-soft); }
.mail-item .check { margin-top: 4px; }
.mail-item .star { color: var(--muted); flex-shrink: 0; margin-top: 2px; }
.mail-item .star.on { color: var(--warning); }
.mi-body { flex: 1; min-width: 0; }
.mi-top { display: flex; align-items: center; gap: 8px; }
.mi-from { font-weight: 600; color: var(--heading); }
.mi-time { margin-left: auto; font-size: 12px; color: var(--muted); white-space: nowrap; }
.mi-subject { color: var(--heading); font-size: 13px; margin-top: 3px; }
.mi-preview { color: var(--muted); font-size: 13px; margin-top: 2px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; }
.mi-tags { display: flex; gap: 6px; margin-top: 6px; align-items: center; }
.mi-attach { color: var(--muted); }

.checkbox { appearance: none; width: 18px; height: 18px; border: 1.5px solid var(--border-strong);
  border-radius: 4px; cursor: pointer; position: relative; flex-shrink: 0; background: #fff; }
.checkbox:checked { background: var(--primary); border-color: var(--primary); }
.checkbox:checked::after { content: ""; position: absolute; left: 5px; top: 1px; width: 5px; height: 10px;
  border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }

/* ---------- 메일 읽기창 ---------- */
.mail-view { background: var(--bg); overflow-y: auto; display: flex; flex-direction: column; }
.view-empty { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--muted); gap: 14px; text-align: center; padding: 40px; }
.view-empty svg { color: #d6d4e0; }
.view-header { background: var(--card); border-bottom: 1px solid var(--border); padding: 18px 24px; }
.view-title-row { display: flex; align-items: center; gap: 12px; }
.view-title { font-size: 18px; font-weight: 700; color: var(--heading); margin: 0; flex: 1; }
.view-actions { display: flex; align-items: center; gap: 4px; }
.back-btn { display: none; }
.view-content { padding: 24px; }
.mail-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 18px; box-shadow: var(--shadow); }
.mail-card-head { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.mc-from { line-height: 1.35; }
.mc-from .nm { font-weight: 600; color: var(--heading); }
.mc-from .em { font-size: 12px; color: var(--muted); }
.mc-meta { margin-left: auto; display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
.mail-card-body { padding: 20px; color: var(--text); line-height: 1.7; }
.mail-card-body p { margin: 0 0 12px; }
.attach-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.attach { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 13px; color: var(--text); background: #faf9fd; }
.attach svg { color: var(--primary); }
.reply-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 20px; box-shadow: var(--shadow); }
.reply-box .reply-to { font-weight: 600; color: var(--heading); margin-bottom: 12px; }
.reply-box textarea { width: 100%; min-height: 120px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px; resize: vertical; font-family: inherit; font-size: 14px; color: var(--text); outline: none; }
.reply-box textarea:focus { border-color: var(--primary); }
.reply-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }

/* ---------- 작성 모달 ---------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(47,43,61,.5); z-index: 50;
  display: none; align-items: flex-end; justify-content: flex-end; padding: 24px; }
.modal-overlay.open { display: flex; }
.modal { background: var(--card); border-radius: var(--radius); width: 600px; max-width: 100%;
  box-shadow: var(--shadow-lg); display: flex; flex-direction: column; max-height: 90vh; }
.modal-head { display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border); background: #f5f5f9; border-radius: var(--radius) var(--radius) 0 0; }
.modal-head h5 { margin: 0; font-size: 16px; color: var(--heading); }
.modal-body { padding: 16px 20px; overflow-y: auto; }
.field-row { display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--border); padding: 10px 0; }
.field-row label { color: var(--muted); width: 56px; flex-shrink: 0; }
.field-row input { border: 0; outline: 0; width: 100%; font-size: 14px; font-family: inherit; color: var(--text); }
.modal-body textarea { width: 100%; min-height: 220px; border: 0; outline: 0; resize: vertical;
  font-family: inherit; font-size: 14px; color: var(--text); padding: 14px 0; }
.modal-foot { display: flex; align-items: center; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--border); }
.modal-foot .spacer { flex: 1; }

/* ===================== 설정 페이지 ===================== */
.settings-wrap { max-width: 1100px; margin: 0 auto; padding: 28px 24px 60px; }
.page-head { margin-bottom: 24px; }
.page-head h1 { font-size: 22px; color: var(--heading); margin: 0 0 6px; }
.page-head p { margin: 0; color: var(--muted); }
.settings-grid { display: grid; grid-template-columns: 220px 1fr; gap: 24px; align-items: start; }
.settings-nav { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px; position: sticky; top: calc(var(--topbar-h) + 24px); }
.settings-nav a { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: var(--radius-sm);
  color: var(--text); font-weight: 500; margin-bottom: 2px; cursor: pointer; }
.settings-nav a:hover { background: #f3f2f7; }
.settings-nav a.active { background: var(--primary); color: #fff; box-shadow: 0 2px 6px rgba(115,103,240,.3); }

.panel { display: none; }
.panel.active { display: block; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); margin-bottom: 20px; }
.card-head { padding: 18px 22px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.card-head h2 { font-size: 16px; color: var(--heading); margin: 0; }
.card-head .desc { font-size: 13px; color: var(--muted); margin: 2px 0 0; }
.card-body { padding: 22px; }
.card-foot { padding: 16px 22px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--heading); }
.form-group .hint { font-size: 12px; color: var(--muted); }
.input, .select { border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 9px 12px; font-size: 14px; font-family: inherit; color: var(--text); background: #fff; outline: none; transition: .12s; }
.input:focus, .select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(115,103,240,.12); }
.input-group { display: flex; }
.input-group .input { border-radius: var(--radius-sm) 0 0 var(--radius-sm); flex: 1; }
.input-group .addon { display: flex; align-items: center; padding: 0 12px; background: #f3f2f7;
  border: 1px solid var(--border-strong); border-left: 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--muted); font-size: 13px; }

/* 토글 스위치 */
.switch { position: relative; display: inline-block; width: 42px; height: 24px; flex-shrink: 0; }
.switch input { display: none; }
.switch .slider { position: absolute; inset: 0; background: #d9d8e0; border-radius: 24px; transition: .2s; }
.switch .slider::before { content: ""; position: absolute; height: 18px; width: 18px; left: 3px; top: 3px;
  background: #fff; border-radius: 50%; transition: .2s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.switch input:checked + .slider { background: var(--primary); }
.switch input:checked + .slider::before { transform: translateX(18px); }
.switch-row { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.switch-row:last-child { border-bottom: 0; }
.switch-row .sr-text { flex: 1; }
.switch-row .sr-text .t { font-weight: 600; color: var(--heading); }
.switch-row .sr-text .d { font-size: 13px; color: var(--muted); margin-top: 2px; }

.radio-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.radio-card { border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm); padding: 14px; cursor: pointer; transition: .12s; }
.radio-card:hover { border-color: var(--primary); }
.radio-card.active { border-color: var(--primary); background: var(--primary-soft); }
.radio-card .rc-t { font-weight: 600; color: var(--heading); }
.radio-card .rc-d { font-size: 12px; color: var(--muted); margin-top: 4px; }

.status-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
  padding: 4px 10px; border-radius: 30px; }
.status-pill.ok { background: var(--success-soft); color: var(--success); }
.status-pill.off { background: #f0eff3; color: var(--muted); }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .03em;
  color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border); }
.table td { padding: 12px 14px; border-bottom: 1px solid var(--border); color: var(--text); }
.table tr:last-child td { border-bottom: 0; }

/* ===================== 반응형 ===================== */
@media (max-width: 1100px) {
  .mail-app { grid-template-columns: var(--sidebar-w) 1fr; }
  .mail-view { display: none; }
  .mail-app.show-view .folders,
  .mail-app.show-view .mail-list { display: none; }
  .mail-app.show-view { grid-template-columns: 1fr; }
  .mail-app.show-view .mail-view { display: flex; }
  .back-btn { display: inline-flex !important; }
  .settings-grid { grid-template-columns: 1fr; }
  .settings-nav { position: static; display: flex; overflow-x: auto; }
  .settings-nav a { white-space: nowrap; }
}
@media (max-width: 720px) {
  .mail-app { grid-template-columns: 1fr; }
  .folders { display: none; }
  .mail-app.show-folders .folders { display: flex; position: fixed; top: var(--topbar-h); bottom: 0;
    left: 0; width: 260px; z-index: 40; box-shadow: var(--shadow-lg); }
  .form-grid, .radio-cards { grid-template-columns: 1fr; }
  .admin-chip .name, .admin-chip .mail { display: none; }
  .topbar-nav a span { display: none; }
}