/* Skill Friday Ltd. — Inventory Management System
   "Halka Blue" theme */

:root {
  --sf-bg: #EAF4FB;
  --sf-card: #FFFFFF;
  --sf-accent: #2E7BD6;
  --sf-accent-hover: #256bbd;
  --sf-accent-soft: #4A90D9;
  --sf-deep: #1E5A9C;
  --sf-deep-dark: #164477;
  --sf-text: #1F2D3D;
  --sf-muted: #6B8098;
  --sf-border: #D7E8F5;
  --sf-warn: #F5A623;
  --sf-danger: #E5484D;
  --sf-success: #2FAE60;
  --sf-radius: 14px;
  --sf-radius-sm: 10px;
  --sf-shadow: 0 4px 18px rgba(30, 90, 156, 0.08);
}

* { box-sizing: border-box; }

body {
  background: var(--sf-bg);
  color: var(--sf-text);
  font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
}

/* ---------------- Layout shell ---------------- */
.sf-app { display: flex; min-height: 100vh; }

.sf-sidebar {
  width: 250px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--sf-deep) 0%, var(--sf-deep-dark) 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  transition: width 0.2s ease;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sf-sidebar.collapsed { width: 76px; }
.sf-sidebar.collapsed .sf-sidebar-label,
.sf-sidebar.collapsed .sf-brand-text { display: none; }

.sf-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.sf-brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #fff;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.sf-brand-text {
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  white-space: nowrap;
}
.sf-brand-text small { display: block; font-weight: 400; opacity: 0.75; font-size: 11px; }

.sf-nav { list-style: none; margin: 0; padding: 10px 10px; flex: 1; }
.sf-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--sf-radius-sm);
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 4px;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.sf-nav-link i, .sf-nav-link .bi { width: 20px; text-align: center; font-size: 16px; }
.sf-nav-link:hover { background: rgba(255,255,255,0.10); color: #fff; }
.sf-nav-link.active { background: var(--sf-accent); color: #fff; box-shadow: 0 2px 10px rgba(46,123,214,0.5); }

.sf-nav-section {
  padding: 14px 14px 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.5);
}

/* ---------------- Main column ---------------- */
.sf-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.sf-topbar {
  background: #fff;
  border-bottom: 1px solid var(--sf-border);
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
}
.sf-topbar-left { display: flex; align-items: center; gap: 14px; }
.sf-topbar-toggle {
  background: var(--sf-bg);
  border: 1px solid var(--sf-border);
  border-radius: 8px;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--sf-deep);
  cursor: pointer;
}
.sf-topbar-title { font-weight: 600; font-size: 17px; color: var(--sf-deep); }

.sf-user {
  display: flex; align-items: center; gap: 10px;
}
.sf-user-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--sf-accent-soft);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; object-fit: cover;
}
.sf-user-name { font-size: 14px; font-weight: 600; color: var(--sf-text); }
.sf-user-role { font-size: 11px; color: var(--sf-muted); }

.sf-content { padding: 24px; flex: 1; }

/* ---------------- Cards ---------------- */
.sf-card {
  background: var(--sf-card);
  border-radius: var(--sf-radius);
  box-shadow: var(--sf-shadow);
  border: 1px solid var(--sf-border);
  padding: 20px;
}

.sf-stat-card {
  background: linear-gradient(135deg, #fff 0%, #F4FAFF 100%);
  border-radius: var(--sf-radius);
  box-shadow: var(--sf-shadow);
  border: 1px solid var(--sf-border);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.sf-stat-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff;
  background: linear-gradient(135deg, var(--sf-accent-soft), var(--sf-accent));
  flex-shrink: 0;
}
.sf-stat-icon.warn { background: linear-gradient(135deg, #FBC46A, var(--sf-warn)); }
.sf-stat-icon.danger { background: linear-gradient(135deg, #F08A8D, var(--sf-danger)); }
.sf-stat-icon.success { background: linear-gradient(135deg, #6FD69A, var(--sf-success)); }
.sf-stat-value { font-size: 24px; font-weight: 700; color: var(--sf-text); line-height: 1.1; }
.sf-stat-label { font-size: 13px; color: var(--sf-muted); }

/* ---------------- Buttons ---------------- */
.btn-sf-primary {
  background: var(--sf-accent); border-color: var(--sf-accent); color: #fff;
}
.btn-sf-primary:hover { background: var(--sf-accent-hover); border-color: var(--sf-accent-hover); color: #fff; }
.btn-sf-outline {
  background: #fff; border: 1px solid var(--sf-accent); color: var(--sf-accent);
}
.btn-sf-outline:hover { background: var(--sf-accent); color: #fff; }

/* ---------------- Badges ---------------- */
.badge-sf-in { background: #E3F3E9; color: var(--sf-success); }
.badge-sf-out { background: #E6F0FB; color: var(--sf-deep); }
.badge-sf-reject { background: #FBE7E7; color: var(--sf-danger); }
.badge-sf-low { background: #FFF3E0; color: #B9700B; }
.badge-sf-inuse { background: #FBE7E7; color: var(--sf-danger); }
.badge-sf-pending { background: #FFF3E0; color: #B9700B; }
.badge-sf-approved { background: #E3F3E9; color: var(--sf-success); }
.badge-sf-rejected { background: #FBE7E7; color: var(--sf-danger); }
.badge-sf-hold { background: #ECEFF3; color: #51606F; }

/* ---------------- Auth pages ---------------- */
.sf-auth-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--sf-deep) 0%, var(--sf-accent-soft) 100%);
  padding: 24px;
}
.sf-auth-card {
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(15, 60, 110, 0.25);
  padding: 36px 34px;
  width: 100%;
  max-width: 420px;
}
.sf-auth-logo {
  width: 76px; height: 76px; border-radius: 50%;
  object-fit: cover;
  display: block; margin: 0 auto 14px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
  border: 3px solid #fff;
}
.sf-auth-title { text-align: center; font-weight: 700; color: var(--sf-deep); margin-bottom: 4px; }
.sf-auth-sub { text-align: center; color: var(--sf-muted); font-size: 13px; margin-bottom: 24px; }

/* ---------------- Table ---------------- */
.table-sf thead th {
  background: var(--sf-bg);
  color: var(--sf-deep);
  border-bottom: 2px solid var(--sf-border);
  font-size: 13px;
  white-space: nowrap;
}
.table-sf td { vertical-align: middle; font-size: 14px; }

.sf-thumb { width: 38px; height: 38px; border-radius: 8px; object-fit: cover; background: var(--sf-bg); }

@media (max-width: 900px) {
  .sf-sidebar { position: fixed; z-index: 40; left: -260px; }
  .sf-sidebar.mobile-open { left: 0; }
  .sf-main { width: 100%; }
}