/* ── Design tokens ──────────────────────────────────────────────────────────── */
:root {
    --sf-nav-width: 240px;
    --sf-nav-bg: #1A2035;
    --sf-nav-text: rgba(255, 255, 255, 0.75);
    --sf-nav-section: rgba(255, 255, 255, 0.35);
    --sf-nav-hover-bg: rgba(255, 255, 255, 0.07);
    --sf-nav-active-bg: rgba(255, 255, 255, 0.12);
    --sf-page-bg: #F0F2F5;
    --sf-card-bg: #ffffff;
    --sf-border: #E8EAED;
    --sf-text: #1A1F2E;
    --sf-text-muted: #8A94A6;
    --sf-primary: #4361EE;
    --sf-primary-hover: #3451D1;
    --sf-danger: #E63946;
    --sf-success: #2DC653;
    --sf-warning: #F59E0B;
    --sf-shadow: 0 2px 12px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    --sf-radius: 10px;
}

/* ── Base ───────────────────────────────────────────────────────────────────── */
html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    color: var(--sf-text);
    background: var(--sf-page-bg);
    height: 100%;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

a, .btn-link { color: var(--sf-primary); }
h1, h2, h3, h4, h5 { color: var(--sf-text); font-weight: 700; letter-spacing: -0.01em; }

.card {
    border-radius: var(--sf-radius) !important;
    border: 1px solid var(--sf-border) !important;
    box-shadow: var(--sf-shadow) !important;
}
.card-body { padding: 20px 22px; }
.card-subtitle { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }

/* ── Sidebar nav ────────────────────────────────────────────────────────────── */
.sf-nav-brand {
    padding: 20px 18px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}
.sf-brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}
.sf-brand-logo {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--sf-primary) 0%, #6B8AFF 100%);
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.4);
}
.mgmt-logo {
    background: linear-gradient(135deg, #6B21A8 0%, #A855F7 100%);
    box-shadow: 0 4px 10px rgba(107, 33, 168, 0.4);
}
.sf-brand-name {
    font-size: 1.0625rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.01em;
    line-height: 1.2;
}
.sf-brand-subtitle {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.45);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.sf-nav {
    padding: 10px 0 20px;
    overflow-y: auto;
    flex: 1;
}
.sf-nav-section-label {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.35);
    padding: 18px 18px 6px;
    user-select: none;
}
.sf-nav-link {
    display: block;
    padding: 9px 18px;
    color: rgba(255, 255, 255, 0.68);
    text-decoration: none;
    font-size: 0.875rem;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
    margin: 1px 8px;
    border-radius: 6px;
}
.sf-nav-link:hover { background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.92); text-decoration: none; }
.sf-nav-link.active { background: rgba(107,33,168,0.35); color: white; font-weight: 600; box-shadow: inset 3px 0 0 #A855F7; }

/* ── Shell layout ────────────────────────────────────────────────────────────── */
.sf-layout { display: flex; height: 100vh; overflow: hidden; }
.sf-sidebar {
    width: var(--sf-nav-width, 240px);
    flex-shrink: 0;
    background: var(--sf-nav-bg);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    box-shadow: 2px 0 8px rgba(0,0,0,0.15);
    z-index: 200;
}
.sf-main { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }
.sf-topbar {
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid #EAECF0;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    flex-shrink: 0;
    z-index: 100;
}
.sf-topbar-left { display: flex; align-items: center; gap: 16px; }
.sf-topbar-right { display: flex; align-items: center; gap: 12px; }
.sf-topbar-platform-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: #6B21A8;
    background: #F3E8FF;
    border: 1px solid #DDD6FE;
    border-radius: 20px;
    padding: 4px 12px;
    letter-spacing: 0.02em;
}
.sf-content { flex: 1; overflow-y: auto; padding: 28px 32px; background: var(--sf-page-bg); }

/* ── User menu ───────────────────────────────────────────────────────────────── */
.sf-user-menu { position: relative; }
.sf-user-btn {
    display: flex; align-items: center; gap: 10px;
    background: none; border: 1px solid transparent; cursor: pointer;
    padding: 6px 10px; border-radius: 8px; font-size: 0.875rem; color: var(--sf-text);
    transition: background 0.15s, border-color 0.15s;
}
.sf-user-btn:hover { background: var(--sf-page-bg); border-color: var(--sf-border); }
.sf-user-avatar {
    width: 34px; height: 34px;
    background: linear-gradient(135deg, var(--sf-primary) 0%, #6B8AFF 100%);
    color: white; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; font-weight: 700; flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(67,97,238,0.35);
}
.mgmt-avatar { background: linear-gradient(135deg, #6B21A8 0%, #A855F7 100%); box-shadow: 0 2px 6px rgba(107,33,168,0.35); }
.sf-user-info { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.25; }
.sf-user-name { font-size: 0.8125rem; font-weight: 600; color: var(--sf-text); }
.sf-user-role { font-size: 0.6875rem; color: var(--sf-text-muted); }
.sf-user-caret { font-size: 0.55rem; color: var(--sf-text-muted); margin-left: 2px; }
.sf-dropdown-menu {
    position: absolute; top: calc(100% + 8px); right: 0;
    background: white; border: 1px solid var(--sf-border); border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.06);
    min-width: 190px; z-index: 300; overflow: hidden; padding: 4px 0;
}
.sf-dropdown-divider { border-top: 1px solid var(--sf-border); margin: 4px 0; }
.sf-dropdown-item {
    display: block; width: 100%; padding: 9px 16px;
    background: none; border: none; text-align: left;
    font-size: 0.875rem; color: var(--sf-text); cursor: pointer; text-decoration: none;
    transition: background 0.1s;
}
.sf-dropdown-item:hover { background: var(--sf-page-bg); }
.sf-dropdown-item.danger { color: var(--sf-danger); }
.sf-dropdown-item.danger:hover { background: #FFF5F5; }

/* ── Page header ─────────────────────────────────────────────────────────────── */
.sf-page-header {
    display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px;
}
.sf-page-title { font-size: 1.375rem; font-weight: 700; color: var(--sf-text); margin: 0; letter-spacing: -0.01em; }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn { border-radius: 7px; font-weight: 500; font-size: 0.875rem; transition: all 0.15s; }
.btn-primary { background-color: var(--sf-primary); border-color: var(--sf-primary); font-weight: 600; }
.btn-primary:hover, .btn-primary:focus { background-color: var(--sf-primary-hover); border-color: var(--sf-primary-hover); box-shadow: 0 4px 12px rgba(67,97,238,0.3); }
.btn:focus, .btn:active:focus { box-shadow: 0 0 0 3px rgba(67,97,238,0.2); }
.form-control, .form-select { border-radius: 7px; border-color: var(--sf-border); font-size: 0.875rem; }
.form-control:focus, .form-select:focus { border-color: var(--sf-primary); box-shadow: 0 0 0 3px rgba(67,97,238,0.15); }

/* ── Tables ─────────────────────────────────────────────────────────────────── */
.sf-table { width: 100%; border-collapse: collapse; background: var(--sf-card-bg); }
.sf-table thead th {
    font-size: 0.6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--sf-text-muted); padding: 12px 16px; border-bottom: 1px solid var(--sf-border);
    white-space: nowrap; background: #F8F9FB;
}
.sf-table tbody td {
    padding: 11px 16px; border-bottom: 1px solid var(--sf-border);
    color: var(--sf-text); font-size: 0.875rem; vertical-align: middle;
}
.sf-table tbody tr:last-child td { border-bottom: none; }
.sf-table tbody tr:hover td { background: #F8F9FB; }
.sf-table-toolbar { display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--sf-border); }
.sf-search { max-width: 260px; }
.sf-code { font-size: 0.8125rem; background: #F0F2F5; border: 1px solid var(--sf-border); border-radius: 4px; padding: 2px 6px; color: #5B6577; }

/* ── Definition list ─────────────────────────────────────────────────────────── */
.sf-dl dt { font-size: 0.8125rem; font-weight: 600; color: var(--sf-text-muted); }
.sf-dl dd { font-size: 0.875rem; color: var(--sf-text); }

/* ── Drawer ──────────────────────────────────────────────────────────────────── */
.sf-drawer-backdrop {
    position: fixed; inset: 0; background: rgba(15,23,42,0.45); z-index: 1040;
    animation: sfFadeIn 0.15s ease; backdrop-filter: blur(2px);
}
.sf-drawer {
    position: fixed; top: 0; right: 0; bottom: 0; width: 480px; max-width: 100vw;
    background: #fff; z-index: 1050; display: flex; flex-direction: column;
    box-shadow: -8px 0 32px rgba(0,0,0,0.12); animation: sfSlideIn 0.2s ease;
}
.sf-drawer-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; border-bottom: 1px solid var(--sf-border); flex-shrink: 0; background: #FAFBFC;
}
.sf-drawer-title { font-size: 1rem; font-weight: 700; color: var(--sf-text); }
.sf-drawer-close {
    background: none; border: 1px solid transparent; font-size: 1rem;
    color: var(--sf-text-muted); cursor: pointer; padding: 5px 9px; border-radius: 6px; transition: all 0.15s;
}
.sf-drawer-close:hover { background: var(--sf-border); color: var(--sf-text); }
.sf-drawer-body { flex: 1; overflow-y: auto; padding: 24px; }
.sf-drawer-footer {
    display: flex; gap: 8px; padding: 16px 24px; border-top: 1px solid var(--sf-border); justify-content: flex-end;
}
.sf-drawer-body .form-label { font-size: 0.8125rem; font-weight: 600; color: var(--sf-text-muted); margin-bottom: 4px; }

@keyframes sfFadeIn  { from { opacity: 0 } to { opacity: 1 } }
@keyframes sfSlideIn { from { transform: translateX(100%) } to { transform: translateX(0) } }

/* ── Management-specific ─────────────────────────────────────────────────────── */
.mgmt-login-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    backdrop-filter: blur(12px);
    color: white;
}
.mgmt-login-header { text-align: center; margin-bottom: 28px; }
.mgmt-login-logo {
    width: 52px; height: 52px; margin: 0 auto 16px;
    background: linear-gradient(135deg, #6B21A8 0%, #A855F7 100%);
    border-radius: 14px; display: flex; align-items: center; justify-content: center;
    font-size: 1.125rem; font-weight: 800; color: white;
    box-shadow: 0 8px 20px rgba(107,33,168,0.5);
}
.mgmt-login-title { font-size: 1.5rem; font-weight: 700; color: white; margin-bottom: 4px; }
.mgmt-login-subtitle { color: rgba(255,255,255,0.5); font-size: 0.875rem; }
.mgmt-input {
    background: rgba(255,255,255,0.07) !important;
    border-color: rgba(255,255,255,0.15) !important;
    color: white !important;
}
.mgmt-input::placeholder { color: rgba(255,255,255,0.3) !important; }
.mgmt-input:focus {
    background: rgba(255,255,255,0.1) !important;
    border-color: #A855F7 !important;
    box-shadow: 0 0 0 3px rgba(168,85,247,0.25) !important;
    color: white !important;
}
.mgmt-btn-primary {
    background: linear-gradient(135deg, #6B21A8 0%, #A855F7 100%);
    border: none; color: white; font-weight: 600; padding: 11px 20px; border-radius: 8px;
    transition: all 0.15s;
}
.mgmt-btn-primary:hover { filter: brightness(1.1); box-shadow: 0 4px 14px rgba(107,33,168,0.4); color: white; }

.mgmt-stat-value { font-size: 2rem; font-weight: 700; color: var(--sf-text); line-height: 1; }

/* ── Error UI ─────────────────────────────────────────────────────────────────── */
#blazor-error-ui {
    background: lightyellow; bottom: 0; box-shadow: 0 -1px 2px rgba(0,0,0,0.2);
    box-sizing: border-box; display: none; left: 0; padding: 0.6rem 1.25rem 0.7rem; position: fixed; width: 100%; z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }