/* Inter font loaded via index.html <link> for reliability */

:root {
    --indigo-dark: #1a1a3e;
    --indigo-primary: #4a3aaa;
    --indigo-light: #6c5ce7;
    --indigo-accent: #00b4d8;
    --indigo-gold: #d4a843;
    --bg-main: #f0f2f8;
    --bg-card: #ffffff;
    --bg-elevated: #f8f9fc;
    --text-primary: #2d2d4e;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --border-color: #e2e5f1;
    --shadow-sm: 0 1px 3px rgba(26, 26, 62, 0.08);
    --shadow-md: 0 4px 12px rgba(26, 26, 62, 0.1);
    --shadow-lg: 0 8px 24px rgba(26, 26, 62, 0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
}

html, body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

input, select, textarea, button {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
    font-size: inherit;
}

a {
    color: var(--indigo-primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--indigo-light);
}

.sidebar a,
.sidebar a:hover,
.sidebar a:visited {
    color: inherit;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Layout */
.page {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--indigo-dark) 90%, black) 0%, var(--indigo-dark) 40%, color-mix(in srgb, var(--indigo-dark) 85%, var(--indigo-primary)) 100%);
    padding: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    box-shadow: 2px 0 16px rgba(0, 0, 0, 0.25);
    z-index: 10;
}

.sidebar-brand {
    padding: 1.75rem 1.25rem 1.5rem;
    text-align: center;
    background-color: color-mix(in srgb, var(--bg-main) 50%, white);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}

.sidebar-brand h2 {
    color: var(--indigo-dark);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    margin: 0;
    text-shadow: none;
}

.sidebar-brand span {
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    display: block;
    margin-top: 0.35rem;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-main);
}

.top-row {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
    z-index: 5;
}

.content {
    flex: 1;
    padding: 1.5rem 2rem;
}

/* Navigation */
.nav-item {
    margin: 0;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    text-decoration: none !important;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.9rem 1.35rem;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.2px;
}

.nav-link:hover {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--indigo-gold);
}

.nav-link.active {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.12);
    border-left-color: var(--indigo-gold);
    font-weight: 600;
}

.nav-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.9;
}

/* Cards */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-card);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 1rem;
    transition: all 0.25s ease;
}

.card:hover {
    box-shadow: 0 8px 24px rgba(26, 26, 62, 0.12);
    transform: translateY(-2px);
}

.card-header {
    background-color: var(--bg-elevated);
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    background-color: var(--bg-elevated);
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
}

/* Buttons */
.btn {
    padding: 0.5rem 1.15rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
    font-weight: 500;
    font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
    line-height: 1.5;
}

.btn-block {
    display: flex;
    width: 100%;
    justify-content: center;
    text-align: center;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background: linear-gradient(135deg, var(--indigo-primary), var(--indigo-light));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--indigo-primary), var(--indigo-light));
    filter: brightness(0.9);
}

.btn-secondary {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669, #047857);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
}

.btn-info {
    background: linear-gradient(135deg, var(--indigo-accent), #0891b2);
    color: white;
}

.btn-info:hover {
    background: linear-gradient(135deg, #0891b2, #0e7490);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
}

.btn-outline-light {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline-light:hover {
    background: var(--bg-elevated);
}

.btn-sm {
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.form-control,
.form-select {
    width: 100%;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
    font-size: 0.9rem;
    line-height: 1.5;
    background-color: var(--bg-card);
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--indigo-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--indigo-primary) 12%, transparent);
}

.form-control:disabled,
.form-select:disabled {
    background-color: var(--bg-elevated);
    opacity: 1;
    cursor: not-allowed;
}

textarea.form-control {
    resize: vertical;
}

fieldset {
    border: none;
    padding: 0;
    margin: 0;
    min-width: 0;
}

legend {
    font-size: inherit;
    padding: 0;
    margin-bottom: 0.5rem;
    float: none;
    width: auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 0.9rem;
}

.alert-info {
    background-color: color-mix(in srgb, var(--indigo-primary) 10%, white);
    border-color: color-mix(in srgb, var(--indigo-primary) 18%, white);
    color: var(--indigo-primary);
}

.alert-success {
    background-color: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

/* Badges */
.badge {
    padding: 0.3rem 0.7rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
    letter-spacing: 0.3px;
}

.badge-primary {
    background-color: color-mix(in srgb, var(--indigo-primary) 12%, white);
    color: var(--indigo-primary);
}

.badge-secondary {
    background-color: var(--bg-elevated);
    color: var(--text-secondary);
}

.badge-success {
    background-color: #ecfdf5;
    color: #065f46;
}

.badge-danger {
    background-color: #fef2f2;
    color: #991b1b;
}

.badge-warning {
    background-color: #fffbeb;
    color: #92400e;
}

.badge-info {
    background-color: #e0f7fa;
    color: #0e7490;
}

/* Validation */
.field-validation-error {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.invalid-feedback {
    display: block;
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-control.invalid {
    border-color: #ef4444;
}

/* Table styles */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

table th {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 2px solid var(--border-color);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

table tr:hover td {
    background-color: var(--bg-elevated);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-light);
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
}

.empty-state p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-light); }
.text-danger { color: #ef4444; }
.text-success { color: #10b981; }
.text-white { color: white; }
.ms-auto { margin-left: auto; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.px-3 { padding-left: 1rem; padding-right: 1rem; }
.px-4 { padding-left: 1.5rem; padding-right: 1.5rem; }

/* Responsive — sidebar handled by MainLayout scoped styles */
@media (max-width: 768px) {
    .top-row {
        flex-wrap: wrap;
    }

    .content {
        padding: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .page-header h1 {
        font-size: 1.25rem;
    }

    .data-table {
        font-size: 0.8rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem 0.4rem;
    }
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid color-mix(in srgb, var(--indigo-primary) 15%, transparent);
    border-radius: 50%;
    border-top-color: var(--indigo-primary);
    animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Page header pattern */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    margin-bottom: 0;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Blazor error UI */
#blazor-error-ui {
    background: #fef2f2;
    color: #991b1b;
    padding: 0.75rem 1rem;
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 1000;
    display: none;
    border-top: 2px solid #fecaca;
    font-family: 'Inter', system-ui, sans-serif !important;
    font-size: 0.85rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    margin-left: 0.75rem;
}

/* ============================
   INSTANT TOOLTIPS (JS-driven)
   ============================ */
.tooltip-popup {
    position: fixed;
    padding: 0.3rem 0.55rem;
    background: #1a1a3e;
    color: white;
    font-size: 0.72rem;
    font-weight: 500;
    border-radius: 4px;
    white-space: nowrap;
    pointer-events: none;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.08s ease;
}