/* ============================================
   Sentinel - Power BI Inspired Dark Theme
   ============================================ */

:root {
    --sn-bg-primary: #1b1b2f;
    --sn-bg-secondary: #162447;
    --sn-bg-card: #1f3056;
    --sn-bg-sidebar: #0f1a2e;
    --sn-accent: #F2C811;
    --sn-accent-hover: #e6be00;
    --sn-text: #e0e0e0;
    --sn-text-muted: #8e99a4;
    --sn-border: rgba(255,255,255,0.08);
    --sn-green: #2ecc71;
    --sn-yellow: #f39c12;
    --sn-red: #e74c3c;
    --sn-sidebar-width: 250px;
    --sn-topbar-height: 56px;
    --sn-input-bg: rgba(0,0,0,0.2);
    --sn-table-header-bg: rgba(0,0,0,0.2);
    --sn-sidebar-nav-color: #8e99a4;
    --sn-sidebar-nav-active-bg: rgba(242,200,17,0.08);
    --sn-sidebar-brand-color: #F2C811;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--sn-bg-primary);
    color: var(--sn-text);
    font-size: 14px;
    min-height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }

/* ---- Login Page ---- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f1a2e 0%, #1b1b2f 50%, #162447 100%);
}
.login-card {
    background: var(--sn-bg-card);
    border: 1px solid var(--sn-border);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.login-card .brand {
    text-align: center;
    margin-bottom: 2rem;
}
.login-card .brand h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--sn-accent);
    margin: 0;
}
.login-card .brand p {
    color: var(--sn-text-muted);
    margin: .25rem 0 0;
    font-size: .9rem;
}

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

/* Sidebar */
.sidebar {
    width: var(--sn-sidebar-width);
    background: var(--sn-bg-sidebar);
    border-right: 1px solid var(--sn-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1040;
    transition: transform .25s ease;
}
.sidebar-brand {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--sn-border);
    display: flex;
    align-items: center;
    gap: .75rem;
    height: var(--sn-topbar-height);
}
.sidebar-brand h5 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--sn-sidebar-brand-color);
}
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: .75rem 0;
}
.sidebar-nav .nav-section {
    padding: .5rem 1.25rem .25rem;
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--sn-text-muted);
    font-weight: 600;
}
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .6rem 1.25rem;
    color: var(--sn-sidebar-nav-color);
    text-decoration: none;
    font-size: .875rem;
    transition: all .15s;
    border-left: 3px solid transparent;
}
.sidebar-nav a:hover {
    color: var(--sn-text);
    background: var(--sn-sidebar-nav-active-bg);
}
.sidebar-nav a.active {
    color: var(--sn-accent);
    background: var(--sn-sidebar-nav-active-bg);
    border-left-color: var(--sn-accent);
    font-weight: 600;
}
.sidebar-nav a i {
    font-size: 1.1rem;
    width: 1.25rem;
    text-align: center;
}
.sidebar-footer {
    padding: .75rem 1.25rem;
    border-top: 1px solid var(--sn-border);
    font-size: .8rem;
    color: var(--sn-text-muted);
}

/* Main */
.main-area {
    margin-left: var(--sn-sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Topbar */
.topbar {
    height: var(--sn-topbar-height);
    background: var(--sn-bg-secondary);
    border-bottom: 1px solid var(--sn-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1030;
}
.topbar .page-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}
.topbar .user-menu {
    display: flex;
    align-items: center;
    gap: .75rem;
    color: var(--sn-text-muted);
    font-size: .875rem;
}
.topbar .btn-sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--sn-text);
    font-size: 1.25rem;
    cursor: pointer;
    padding: .25rem;
}

/* Content */
.content-area {
    flex: 1;
    padding: 1.5rem;
}

/* ---- Cards ---- */
.sn-card {
    background: var(--sn-bg-card);
    border: 1px solid var(--sn-border);
    border-radius: 10px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}
.sn-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--sn-border);
}
.sn-card-header h6 {
    margin: 0;
    font-size: .9rem;
    font-weight: 600;
    color: var(--sn-text);
}

/* ---- KPI Tiles ---- */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.kpi-tile {
    background: var(--sn-bg-card);
    border: 1px solid var(--sn-border);
    border-radius: 10px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.kpi-tile .kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.kpi-tile .kpi-icon.red { background: rgba(231,76,60,0.15); color: var(--sn-red); }
.kpi-tile .kpi-icon.yellow { background: rgba(243,156,18,0.15); color: var(--sn-yellow); }
.kpi-tile .kpi-icon.green { background: rgba(46,204,113,0.15); color: var(--sn-green); }
.kpi-tile .kpi-icon.accent { background: rgba(242,200,17,0.15); color: var(--sn-accent); }
.kpi-tile .kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}
.kpi-tile .kpi-label {
    font-size: .78rem;
    color: var(--sn-text-muted);
}

/* ---- Stoplight ---- */
.stoplight {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .8rem;
    font-weight: 600;
    padding: .2rem .6rem;
    border-radius: 20px;
}
.stoplight.red { background: rgba(231,76,60,0.15); color: var(--sn-red); }
.stoplight.yellow { background: rgba(243,156,18,0.15); color: var(--sn-yellow); }
.stoplight.green { background: rgba(46,204,113,0.15); color: var(--sn-green); }
.stoplight-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.stoplight.red .stoplight-dot { background: var(--sn-red); }
.stoplight.yellow .stoplight-dot { background: var(--sn-yellow); }
.stoplight.green .stoplight-dot { background: var(--sn-green); }

/* ---- Data Grid ---- */
.sn-table {
    width: 100%;
    font-size: .85rem;
    border-collapse: collapse;
}
.sn-table thead th {
    background: var(--sn-table-header-bg);
    padding: .65rem .75rem;
    text-align: left;
    font-weight: 600;
    color: var(--sn-text-muted);
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .03em;
    border-bottom: 1px solid var(--sn-border);
    white-space: nowrap;
}
.sn-table tbody tr {
    border-bottom: 1px solid var(--sn-border);
    transition: background .1s;
}
.sn-table tbody tr:hover {
    background: var(--sn-sidebar-nav-active-bg);
}
.sn-table tbody td {
    padding: .6rem .75rem;
    vertical-align: middle;
}

/* ---- Form overrides ---- */
.form-control, .form-select {
    background: var(--sn-input-bg) !important;
    border: 1px solid var(--sn-border) !important;
    color: var(--sn-text) !important;
    font-size: .875rem;
    border-radius: 6px;
}
.form-control:focus, .form-select:focus {
    border-color: var(--sn-accent) !important;
    box-shadow: 0 0 0 2px rgba(242,200,17,0.15) !important;
}
.form-label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--sn-text-muted);
    margin-bottom: .3rem;
}

/* ---- Buttons ---- */
.btn-accent {
    background: var(--sn-accent);
    color: #1b1b2f;
    border: none;
    font-weight: 600;
    border-radius: 6px;
    padding: .45rem 1.1rem;
    font-size: .85rem;
    transition: all .15s;
}
.btn-accent:hover {
    background: var(--sn-accent-hover);
    color: #1b1b2f;
}
.btn-ghost {
    background: transparent;
    border: 1px solid var(--sn-border);
    color: var(--sn-text-muted);
    border-radius: 6px;
    padding: .45rem 1rem;
    font-size: .85rem;
    transition: all .15s;
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.05);
    color: var(--sn-text);
}

/* ---- Tabs (dashboard footer) ---- */
.sn-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--sn-border);
    margin-bottom: 1rem;
}
.sn-tab {
    padding: .6rem 1.25rem;
    cursor: pointer;
    font-size: .85rem;
    font-weight: 500;
    color: var(--sn-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all .15s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}
.sn-tab:hover { color: var(--sn-text); }
.sn-tab.active {
    color: var(--sn-accent);
    border-bottom-color: var(--sn-accent);
    font-weight: 600;
}

/* ---- Filter bar ---- */
.filter-bar {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: .75rem;
    align-items: end;
}

/* ---- Chart container ---- */
.chart-container {
    position: relative;
    height: 280px;
}

/* ---- Autocomplete ---- */
.autocomplete-wrapper {
    position: relative;
}
.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 1050;
    background: var(--sn-bg-card);
    border: 1px solid var(--sn-border);
    border-radius: 0 0 6px 6px;
    max-height: 200px;
    overflow-y: auto;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.autocomplete-list .autocomplete-item {
    padding: .5rem .75rem;
    cursor: pointer;
    font-size: .85rem;
    transition: background .1s;
}
.autocomplete-list .autocomplete-item:hover,
.autocomplete-list .autocomplete-item.highlighted {
    background: rgba(242,200,17,0.1);
    color: var(--sn-accent);
}

/* ---- Upload zone ---- */
.upload-zone {
    border: 2px dashed var(--sn-border);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    color: var(--sn-text-muted);
    cursor: pointer;
    transition: all .2s;
}
.upload-zone:hover {
    border-color: var(--sn-accent);
    color: var(--sn-accent);
    background: rgba(242,200,17,0.03);
}

/* ---- Modal ---- */
.modal-content {
    background: var(--sn-bg-card) !important;
    border: 1px solid var(--sn-border) !important;
    border-radius: 10px !important;
}
.modal-header {
    border-bottom-color: var(--sn-border) !important;
}
.modal-footer {
    border-top-color: var(--sn-border) !important;
}

/* ---- Toast / Alert ---- */
.sn-alert {
    padding: .75rem 1rem;
    border-radius: 8px;
    font-size: .85rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.sn-alert.success { background: rgba(46,204,113,0.12); color: var(--sn-green); border: 1px solid rgba(46,204,113,0.2); }
.sn-alert.error { background: rgba(231,76,60,0.12); color: var(--sn-red); border: 1px solid rgba(231,76,60,0.2); }

/* ---- Responsive ---- */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-area {
        margin-left: 0;
    }
    .topbar .btn-sidebar-toggle {
        display: block;
    }
    .filter-bar {
        grid-template-columns: 1fr;
    }
    .kpi-row {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 575.98px) {
    .kpi-row {
        grid-template-columns: 1fr;
    }
    .content-area {
        padding: 1rem;
    }
    .sn-table {
        font-size: .78rem;
    }
    .sn-table thead th,
    .sn-table tbody td {
        padding: .5rem;
    }
}

/* ---- Validation ---- */
h1:focus { outline: none; }
.valid.modified:not([type=checkbox]) { outline: 1px solid #26b050; }
.invalid { outline: 1px solid #e50000; }
.validation-message { color: #e50000; }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}
.blazor-error-boundary::after { content: "An error has occurred." }
.darker-border-checkbox.form-check-input { border-color: #929292; }