/* ── CSS 변수 ─────────────────────────────────────────────────── */
:root {
  --st-brand:    #e85d04;
  --st-brand-bg: #fff5ee;
  --st-text:     #475569;
}

/* ── 레이아웃 ──────────────────────────────────────────────────── */
body        { background: #f5f7fa; font-size: 14px; }
#main       { overflow: auto; }
.page       { display: none; }
.page.active { display: block; }
.app-hidden { display: none !important; }
.text-brand { color: var(--st-brand); }

/* ── 상단 탭바 ─────────────────────────────────────────────────── */
#topbar {
  background: #fff;
  border-bottom: 1px solid #d1d5db;
  box-shadow: 0 2px 4px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 1020;
}
#topbar .navbar-brand {
  font-weight: 700;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
#topbar .navbar-brand:hover { opacity: .8; }
#topbar .nav-link {
  color: var(--st-text);
  font-weight: 500;
  border-radius: 10px;
  padding: 6px 14px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
#topbar .nav-link i          { font-size: 1.1rem; }
#topbar .nav-link:hover      { color: var(--st-brand); background: var(--st-brand-bg); }
#topbar .nav-link.active     { color: var(--st-brand); background: var(--st-brand-bg); font-weight: 600; }

/* 세션 타이머 · 연장 버튼 · 로그아웃 버튼 */
.session-timer             { color: #6c757d; }
.session-timer--warn       { color: #fd7e14; }
.session-timer--danger     { color: #dc3545; }
.btn-extend {
  font-size: 12px;
  border-radius: 8px;
  border: 1px solid #ced4da;
  color: var(--st-text);
  line-height: 1.8;
}
.btn-extend:hover  { background: var(--st-brand-bg); border-color: var(--st-brand); color: var(--st-brand); }
.btn-topbar-icon   { padding: 8px 10px; border-radius: 10px; color: var(--st-text); }
.btn-topbar-icon:hover { background: var(--st-brand-bg); color: var(--st-brand); }

/* ── 설정 좌측 세로 탭 ─────────────────────────────────────────── */
.settings-vnav .nav-link        { color: var(--st-text); border-radius: 8px; padding: 8px 14px; margin-bottom: 3px; font-size: 13.5px; }
.settings-vnav .nav-link i      { font-size: 1.1rem; width: 1.5rem; }
.settings-vnav .nav-link:hover  { background: var(--st-brand-bg); color: var(--st-brand); }
.settings-vnav .nav-link.active { background: var(--st-brand); color: #fff; }

/* ── 공통 컴포넌트 ─────────────────────────────────────────────── */
.card                    { border: none; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.btn-xs                  { padding: 2px 8px; font-size: 12px; }

.table th                { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: #6c757d; }
#loginModal .modal-dialog { max-width: 380px; margin-top: 15vh; }

/* ── 대시보드 ──────────────────────────────────────────────────── */
.dash-card       { border: 1px solid rgba(13,110,253,.15) !important; transition: box-shadow .15s ease, transform .15s ease; }
.dash-card:hover { box-shadow: 0 8px 22px rgba(13,110,253,.18); transform: translateY(-3px); border-color: rgba(13,110,253,.35) !important; }

.stat-card.upload       { border-color: #0d6efd; }
.stat-card.download     { border-color: #198754; }
.stat-card.delete       { border-color: #dc3545; }
.stat-card.device       { border-color: #6f42c1; }

/* ── 로그 테이블 ───────────────────────────────────────────────── */
#page-logs table td, #page-logs table th { padding: 5px 10px; }
#page-logs table thead th:not(:last-child) { border-right: 2px solid #ced4da; }
.action-upload            { color: #0d6efd; }
.action-download          { color: #198754; }
.action-delete            { color: #dc3545; }
.action-rename            { color: #fd7e14; }
.action-login,
.action-logout            { color: #6c757d; }
.size-val                 { font-family: monospace; }

/* ── API 가이드 ────────────────────────────────────────────────── */
.api-code {
  background: #f6f8fa;
  border: 1px solid #e4e7ea;
  border-radius: .375rem;
  padding: .5rem .65rem;
}
.api-code code {
  color: #24292f;
  font-size: .78rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
}
#page-apiguide table code { font-size: .78rem; }