/* ═══════════════════════════════════════════════════════════
   SafeAI Platform — Design System
   ═══════════════════════════════════════════════════════════ */

:root {
  /* Colors */
  --bg: #f0f2f5;
  --card: #ffffff;
  --border: #e2e8f0;
  --cyan: #1a6eff;
  --cyan-light: #e8f0fe;
  --green: #00a854;
  --green-light: #e6f7ed;
  --amber: #d97706;
  --amber-light: #fef3c7;
  --red: #e53e3e;
  --red-light: #fee2e2;
  --purple: #7c3aed;
  --purple-light: #ede9fe;
  --text1: #0d1520;
  --text2: #2e4a66;
  --text3: #5a7a96;
  --text4: #94a3b8;
  /* Layout */
  --sidebar-w: 200px;
  --topbar-h: 52px;
  /* Radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;
  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 2px 8px rgba(0,0,0,.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,.1);
}

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text1);
  font-size: 14px;
  line-height: 1.5;
}
a { color: var(--cyan); text-decoration: none; }
button { cursor: pointer; font-family: inherit; font-size: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* ── Topbar ─────────────────────────────────────────────── */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 16px;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  overflow: visible;
}
.topbar-logo {
  font-weight: 700; font-size: 16px; color: var(--cyan);
  display: flex; align-items: center; gap: 8px;
  width: var(--sidebar-w);
}
.topbar-logo svg { width: 24px; height: 24px; }
.topbar-center { flex: 1; display: flex; align-items: center; gap: 16px; padding-left: 16px; }
.topbar-right { display: flex; align-items: center; gap: 12px; overflow: visible; }
.topbar-clock { color: var(--text3); font-size: 13px; font-variant-numeric: tabular-nums; }
.topbar-bell {
  position: relative; background: none; border: none; color: var(--text3);
  font-size: 18px; padding: 6px;
}
.topbar-bell .dot {
  position: absolute; top: 4px; right: 4px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--red); border: 2px solid var(--card);
}
.topbar-user-wrap { position: relative; }
.topbar-user {
  display: flex; align-items: center; gap: 8px;
  background: none; border: none; color: var(--text2);
}
.topbar-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--cyan-light); color: var(--cyan);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 13px;
}

/* ── User Dropdown ──────────────────────────────────────── */
.user-dropdown {
  display: none; position: absolute; top: calc(100% + 8px); right: 0;
  width: 260px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r-md); box-shadow: var(--shadow-lg); z-index: 9999;
  overflow: hidden;
}
.user-dropdown.open { display: block; }
.user-dropdown-profile {
  padding: 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.user-dropdown-profile .avatar-lg {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--cyan-light); color: var(--cyan);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; flex-shrink: 0;
}
.user-dropdown-profile .profile-info { min-width: 0; }
.user-dropdown-profile .profile-name { font-weight: 600; font-size: 14px; }
.user-dropdown-profile .profile-email { font-size: 12px; color: var(--text3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-dropdown-profile .profile-grade { margin-top: 4px; }
.user-dropdown-menu { padding: 4px 0; }
.user-dropdown-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; font-size: 13px; color: var(--text2);
  cursor: pointer; border: none; background: none; width: 100%;
  text-align: left; transition: background .1s;
}
.user-dropdown-item:hover { background: var(--bg); }
.user-dropdown-item .dd-icon { width: 18px; text-align: center; font-size: 14px; }
.user-dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }
.user-dropdown-item.danger { color: var(--red); }
.user-dropdown-item.danger:hover { background: var(--red-light); }

/* ── Password Strength ──────────────────────────────────── */
.pw-rules { list-style: none; padding: 0; margin: 8px 0 0; font-size: 12px; }
.pw-rules li { padding: 2px 0; color: var(--text4); display: flex; align-items: center; gap: 6px; }
.pw-rules li.pass { color: var(--green); }
.pw-rules li .rule-icon { width: 14px; text-align: center; }

/* ── Sidebar ────────────────────────────────────────────── */
.sidebar {
  position: fixed; top: var(--topbar-h); left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--card);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  z-index: 90;
  padding: 8px 0;
}
.sidebar-group { padding: 4px 0; }
.sidebar-label {
  padding: 8px 16px 4px;
  font-size: 11px; font-weight: 600;
  color: var(--text4); text-transform: uppercase; letter-spacing: .5px;
}
.sidebar-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  color: var(--text2);
  font-size: 13px;
  border-left: 3px solid transparent;
  transition: all .15s;
}
.sidebar-item:hover { background: var(--bg); }
.sidebar-item.active {
  color: var(--cyan); background: var(--cyan-light);
  border-left-color: var(--cyan); font-weight: 600;
}
.sidebar-item .icon { width: 18px; text-align: center; opacity: .7; }
.sidebar-item.sub {
  padding-left: 36px;
  font-size: 12.5px;
  color: var(--text3);
}
.sidebar-item.sub .icon { width: 14px; opacity: .55; }
.sidebar-item.sub.active {
  color: var(--cyan); background: var(--cyan-light); font-weight: 600;
}
.sidebar-divider {
  height: 1px; background: var(--border); margin: 6px 12px;
}
.sidebar-badge {
  margin-left: auto;
  background: var(--red); color: #fff;
  font-size: 11px; font-weight: 600;
  padding: 1px 6px; border-radius: 10px;
  min-width: 18px; text-align: center;
}

/* ── Sidebar 얇은 스트립 + 마우스오버 표출 — roadmap §4.10 ─── */
.sidebar { transition: width .16s ease; }
.main { transition: margin-left .16s ease; }
:root.sb-collapsed { --sidebar-w: 12px; }               /* 얇은 바만 남김(존재 인식) */
:root.sb-collapsed .topbar-logo { display: none; }
:root.sb-collapsed .sidebar { width: 12px; overflow: hidden; }
:root.sb-collapsed .sidebar > * { opacity: 0; transition: opacity .12s ease; }   /* 아이콘/라벨 숨김 */
/* 마우스 올리면 전체 표출 (오버레이 — 본문 밀지 않음) */
:root.sb-collapsed .sidebar:hover { width: 200px; overflow-y: auto; z-index: 95; box-shadow: var(--shadow-lg); }
:root.sb-collapsed .sidebar:hover > * { opacity: 1; }
/* 토글 버튼 (topbar) */
.sb-toggle { background: none; border: none; color: var(--text3); width: 34px; height: 34px; border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: .15s; }
.sb-toggle:hover { background: var(--bg); color: var(--cyan); }
.sb-toggle svg { width: 20px; height: 20px; transition: transform .18s; }
:root.sb-collapsed .sb-toggle svg { transform: rotate(180deg); }
.ptt-embed .sb-toggle { display: none; }

/* ── Main Content ───────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  margin-top: var(--topbar-h);
  padding: 16px 20px;
  min-height: calc(100vh - var(--topbar-h));
}

/* ── Page Header ────────────────────────────────────────── */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.page-title { font-size: 20px; font-weight: 700; }
.page-desc { color: var(--text3); font-size: 13px; margin-top: 2px; }

/* ── KPI Cards ──────────────────────────────────────────── */
.kpi-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi-card {
  background: var(--card); border-radius: var(--r-md);
  padding: 16px; border-left: 4px solid var(--cyan);
  box-shadow: var(--shadow-sm);
}
.kpi-card.green { border-left-color: var(--green); }
.kpi-card.amber { border-left-color: var(--amber); }
.kpi-card.red { border-left-color: var(--red); }
.kpi-card.purple { border-left-color: var(--purple); }
.kpi-label { font-size: 12px; color: var(--text3); margin-bottom: 4px; }
.kpi-value { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kpi-sub { font-size: 12px; color: var(--text4); margin-top: 2px; }

/* ── Panel ──────────────────────────────────────────────── */
.panel {
  background: var(--card); border-radius: var(--r-md);
  box-shadow: var(--shadow-sm); margin-bottom: 16px;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
}
.panel-title { font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.panel-body { padding: 16px; }
.panel-body.no-pad { padding: 0; }

/* ── Tabs ───────────────────────────────────────────────── */
.tabs {
  display: flex; border-bottom: 1px solid var(--border);
  background: var(--card); margin-bottom: 16px;
  border-radius: var(--r-md) var(--r-md) 0 0;
}
.tab {
  padding: 10px 20px; color: var(--text3);
  font-size: 13px; font-weight: 500; border: none; background: none;
  border-bottom: 2px solid transparent;
  transition: all .15s;
}
.tab:hover { color: var(--text1); }
.tab.active { color: var(--cyan); border-bottom-color: var(--cyan); font-weight: 600; }

/* ── Table ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; padding: 10px 12px;
  background: #f8fafc; color: var(--text3);
  font-weight: 600; font-size: 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td {
  padding: 10px 12px; border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}
tbody tr:hover { background: #f8fafc; }
tbody tr.inactive { opacity: .6; }
tbody tr.highlight-amber { background: var(--amber-light); }
tbody tr.highlight-red { background: var(--red-light); }

/* ── Badges ─────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 600;
  white-space: nowrap;
}
.badge-cyan { background: var(--cyan-light); color: var(--cyan); }
.badge-green { background: var(--green-light); color: var(--green); }
.badge-amber { background: var(--amber-light); color: var(--amber); }
.badge-red { background: var(--red-light); color: var(--red); }
.badge-purple { background: var(--purple-light); color: var(--purple); }
.badge-gray { background: #f1f5f9; color: var(--text3); }

/* Status dots */
.dot-online { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: pulse 2s infinite; }
.dot-offline { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--text4); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .5; } }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--r-sm);
  font-size: 13px; font-weight: 500;
  border: 1px solid var(--border);
  background: var(--card); color: var(--text2);
  transition: all .15s;
}
.btn:hover { background: var(--bg); }
.btn-primary { background: var(--cyan); color: #fff; border-color: var(--cyan); }
.btn-primary:hover { background: #1557cc; }
.btn-danger { background: var(--red); color: #fff; border-color: var(--red); }
.btn-danger:hover { background: #c53030; }
.btn-success { background: var(--green); color: #fff; border-color: var(--green); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 6px; min-width: 32px; justify-content: center; }

/* ── Search Bar ─────────────────────────────────────────── */
.search-bar {
  display: flex; gap: 8px; align-items: center;
  padding: 12px 16px; flex-wrap: wrap;
}
.search-input {
  flex: 1; min-width: 200px;
  padding: 8px 12px; border: 1px solid var(--border);
  border-radius: var(--r-sm); outline: none;
  transition: border-color .15s;
}
.search-input:focus { border-color: var(--cyan); }
.search-select {
  padding: 8px 12px; border: 1px solid var(--border);
  border-radius: var(--r-sm); background: var(--card);
  min-width: 120px; outline: none;
}

/* ── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.4); z-index: 200;
  align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--card); border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  width: 90%; max-width: 560px; max-height: 85vh;
  overflow-y: auto;
}
.modal-lg { max-width: 720px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close {
  background: none; border: none; font-size: 20px;
  color: var(--text3); padding: 4px;
}
.modal-body { padding: 20px; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 12px 20px; border-top: 1px solid var(--border);
}

/* ── Form ───────────────────────────────────────────────── */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 12px; font-weight: 600; color: var(--text2); margin-bottom: 4px; }
.form-label .req { color: var(--red); }
.form-control {
  width: 100%; padding: 8px 12px;
  border: 1px solid var(--border); border-radius: var(--r-sm);
  outline: none; transition: border-color .15s;
}
.form-control:focus { border-color: var(--cyan); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-hint { font-size: 11px; color: var(--text4); margin-top: 4px; }

/* ── Pagination ─────────────────────────────────────────── */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; padding: 12px;
}
.pagination button {
  padding: 6px 10px; border: 1px solid var(--border);
  border-radius: var(--r-sm); background: var(--card);
  font-size: 12px; color: var(--text2);
}
.pagination button.active { background: var(--cyan); color: #fff; border-color: var(--cyan); }
.pagination button:disabled { opacity: .4; cursor: default; }

/* ── Utility ────────────────────────────────────────────── */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text3); }
.text-red { color: var(--red); }
.text-green { color: var(--green); }
.text-amber { color: var(--amber); }
.font-mono { font-family: 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.gap-8 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  margin-left: var(--sidebar-w);
  padding: 12px 20px;
  font-size: 11px; color: var(--text4);
  display: flex; justify-content: space-between;
  border-top: 1px solid var(--border);
}

/* ── Blink animation for CRITICAL ───────────────────────── */
@keyframes blink-red { 0%,100% { background: var(--red-light); } 50% { background: #fecaca; } }
.blink-red { animation: blink-red 1.5s infinite; }

/* ── Tree ───────────────────────────────────────────────── */
.tree { list-style: none; }
.tree-item {
  padding: 8px 12px;
  display: flex; align-items: center; gap: 6px;
  cursor: pointer; font-size: 13px; color: var(--text2);
  border-radius: var(--r-sm);
}
.tree-item:hover { background: var(--bg); }
.tree-item.active { background: var(--cyan-light); color: var(--cyan); font-weight: 600; }
.tree-item .toggle { width: 16px; text-align: center; font-size: 10px; }
.tree-children { padding-left: 20px; }
.tree-count { margin-left: auto; font-size: 11px; color: var(--text4); }

/* ── Card Grid ──────────────────────────────────────────── */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.card {
  background: var(--card); border-radius: var(--r-md);
  padding: 16px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border); transition: box-shadow .15s;
}
.card:hover { box-shadow: var(--shadow-md); }
.card-title { font-weight: 600; margin-bottom: 8px; }
.card-meta { font-size: 12px; color: var(--text3); display: flex; gap: 12px; }

/* ── Slide Panel ────────────────────────────────────────── */
.slide-panel {
  position: fixed; top: var(--topbar-h); right: -480px; bottom: 0;
  width: 480px; background: var(--card);
  box-shadow: var(--shadow-lg); z-index: 150;
  transition: right .3s ease; overflow-y: auto;
}
.slide-panel.open { right: 0; }
.slide-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--card); z-index: 1;
}
.slide-panel-body { padding: 20px; }

/* ── Calendar ───────────────────────────────────────────── */
.calendar { width: 100%; border-collapse: collapse; }
.calendar th { padding: 8px; text-align: center; font-size: 12px; color: var(--text3); }
.calendar td {
  padding: 4px; height: 100px; vertical-align: top;
  border: 1px solid var(--border); font-size: 12px;
}
.calendar td .day-num { font-weight: 600; margin-bottom: 4px; }
.calendar .cal-item {
  padding: 2px 6px; border-radius: 3px; margin-bottom: 2px;
  font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cal-approved { background: var(--green-light); color: var(--green); }
.cal-submitted { background: var(--amber-light); color: var(--amber); }
.cal-progress { background: var(--cyan-light); color: var(--cyan); }
.cal-completed { background: #f1f5f9; color: var(--text3); }