@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --vdr-primary: #0f172a;
    --vdr-primary-light: #1e293b;
    --vdr-primary-lighter: #334155;
    --vdr-accent: #0ea5e9;
    --vdr-accent-hover: #0284c7;
    --vdr-accent-soft: #e0f2fe;
    --vdr-success: #10b981;
    --vdr-success-soft: #d1fae5;
    --vdr-warning: #f59e0b;
    --vdr-warning-soft: #fef3c7;
    --vdr-danger: #ef4444;
    --vdr-danger-soft: #fee2e2;
    --vdr-info: #6366f1;
    --vdr-info-soft: #e0e7ff;
    --vdr-bg: #f8fafc;
    --vdr-surface: #ffffff;
    --vdr-border: #e2e8f0;
    --vdr-text: #1e293b;
    --vdr-text-muted: #64748b;
    --vdr-text-light: #94a3b8;
    --vdr-sidebar-width: 260px;
    --vdr-topbar-height: 64px;
    --vdr-radius-sm: 0.375rem;
    --vdr-radius: 0.5rem;
    --vdr-radius-lg: 0.75rem;
    --vdr-radius-xl: 1rem;
    --vdr-shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --vdr-shadow: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
    --vdr-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.08);
    --vdr-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.08);
    --vdr-transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--vdr-text);
    background-color: var(--vdr-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--vdr-accent);
    text-decoration: none;
}

a:hover {
    color: var(--vdr-accent-hover);
}

/* Buttons */
.btn {
    font-weight: 500;
    border-radius: var(--vdr-radius);
    padding: 0.5rem 1rem;
    transition: all var(--vdr-transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--vdr-primary);
    border-color: var(--vdr-primary);
    color: #fff;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--vdr-primary-light);
    border-color: var(--vdr-primary-light);
    color: #fff;
}

.btn-accent {
    background-color: var(--vdr-accent);
    border-color: var(--vdr-accent);
    color: #fff;
}

.btn-accent:hover, .btn-accent:focus {
    background-color: var(--vdr-accent-hover);
    border-color: var(--vdr-accent-hover);
    color: #fff;
}

.btn-outline-accent {
    color: var(--vdr-accent);
    border-color: var(--vdr-accent);
    background-color: transparent;
}

.btn-outline-accent:hover {
    background-color: var(--vdr-accent-soft);
    color: var(--vdr-accent-hover);
}

.btn-light {
    background-color: #fff;
    border-color: var(--vdr-border);
    color: var(--vdr-text);
}

.btn-light:hover {
    background-color: var(--vdr-bg);
    border-color: var(--vdr-border);
}

.btn-ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--vdr-text-muted);
}

.btn-ghost:hover {
    background-color: var(--vdr-bg);
    color: var(--vdr-text);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Forms */
.form-control, .form-select {
    border-color: var(--vdr-border);
    border-radius: var(--vdr-radius);
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    transition: border-color var(--vdr-transition), box-shadow var(--vdr-transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--vdr-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.12);
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--vdr-text);
    margin-bottom: 0.375rem;
}

.form-text {
    color: var(--vdr-text-muted);
    font-size: 0.8125rem;
}

/* Cards */
.vdr-card {
    background: var(--vdr-surface);
    border: 1px solid var(--vdr-border);
    border-radius: var(--vdr-radius-lg);
    box-shadow: var(--vdr-shadow);
    transition: box-shadow var(--vdr-transition), transform var(--vdr-transition);
}

.vdr-card:hover {
    box-shadow: var(--vdr-shadow-md);
}

.vdr-card-interactive {
    cursor: pointer;
}

.vdr-card-interactive:hover {
    transform: translateY(-2px);
}

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

.vdr-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--vdr-sidebar-width);
    height: 100vh;
    background-color: var(--vdr-primary);
    color: #fff;
    display: flex;
    flex-direction: column;
    z-index: 1030;
    transition: transform var(--vdr-transition);
}

.vdr-sidebar-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.5);
    z-index: 1020;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--vdr-transition), visibility var(--vdr-transition);
}

.vdr-sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

.vdr-sidebar-brand {
    height: var(--vdr-topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.vdr-sidebar-brand .brand-logo {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--vdr-accent) 0%, #6366f1 100%);
    border-radius: var(--vdr-radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.125rem;
    margin-right: 0.75rem;
}

.vdr-sidebar-brand .brand-text {
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.01em;
}

.vdr-sidebar-brand .brand-subtext {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--vdr-text-light);
}

.vdr-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.75rem;
}

.vdr-sidebar-nav .nav-section {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--vdr-text-light);
    padding: 0 0.75rem;
    margin: 1rem 0 0.5rem;
}

.vdr-sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.7);
    border-radius: var(--vdr-radius);
    padding: 0.625rem 0.875rem;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    transition: all var(--vdr-transition);
}

.vdr-sidebar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.vdr-sidebar-nav .nav-link.active {
    background-color: var(--vdr-accent);
    color: #fff;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.vdr-sidebar-footer {
    padding: 1rem 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.vdr-main {
    flex: 1;
    margin-left: var(--vdr-sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.vdr-topbar {
    height: var(--vdr-topbar-height);
    background-color: var(--vdr-surface);
    border-bottom: 1px solid var(--vdr-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1010;
}

.vdr-topbar .btn-menu {
    display: none;
    padding: 0.5rem;
    margin-left: -0.5rem;
}

.vdr-content {
    flex: 1;
    padding: 1.5rem;
}

.vdr-page-header {
    margin-bottom: 1.5rem;
}

.vdr-page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.vdr-page-header p {
    color: var(--vdr-text-muted);
    margin-bottom: 0;
}

/* Badges */
.vdr-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.vdr-badge-success {
    background-color: var(--vdr-success-soft);
    color: #047857;
}

.vdr-badge-warning {
    background-color: var(--vdr-warning-soft);
    color: #b45309;
}

.vdr-badge-danger {
    background-color: var(--vdr-danger-soft);
    color: #b91c1c;
}

.vdr-badge-info {
    background-color: var(--vdr-info-soft);
    color: #4338ca;
}

.vdr-badge-secondary {
    background-color: #f1f5f9;
    color: var(--vdr-text-muted);
}

/* Breadcrumb */
.vdr-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--vdr-text-muted);
    margin-bottom: 0.5rem;
}

.vdr-breadcrumb a {
    color: var(--vdr-text-muted);
}

.vdr-breadcrumb a:hover {
    color: var(--vdr-accent);
}

.vdr-breadcrumb-separator {
    color: var(--vdr-text-light);
}

/* Tabs */
.vdr-tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--vdr-border);
    margin-bottom: 1.5rem;
}

.vdr-tab {
    padding: 0.75rem 1rem;
    font-weight: 500;
    color: var(--vdr-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--vdr-transition);
}

.vdr-tab:hover {
    color: var(--vdr-text);
}

.vdr-tab.active {
    color: var(--vdr-accent);
    border-bottom-color: var(--vdr-accent);
}

/* Tables & lists */
.vdr-list {
    display: flex;
    flex-direction: column;
}

.vdr-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--vdr-border);
    transition: background-color var(--vdr-transition);
}

.vdr-list-item:last-child {
    border-bottom: none;
}

.vdr-list-item:hover {
    background-color: #fafafa;
}

/* Dropdowns */
.vdr-dropdown {
    position: relative;
}

.vdr-dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 0.25rem);
    min-width: 180px;
    background-color: var(--vdr-surface);
    border: 1px solid var(--vdr-border);
    border-radius: var(--vdr-radius-lg);
    box-shadow: var(--vdr-shadow-lg);
    padding: 0.375rem;
    z-index: 1050;
    display: none;
}

.vdr-dropdown-menu.show {
    display: block;
}

.vdr-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border-radius: var(--vdr-radius);
    border: none;
    background: none;
    text-align: left;
    font-size: 0.875rem;
    color: var(--vdr-text);
    cursor: pointer;
    transition: background-color var(--vdr-transition);
}

.vdr-dropdown-item:hover {
    background-color: var(--vdr-bg);
}

.vdr-dropdown-item.text-danger {
    color: var(--vdr-danger);
}

.vdr-dropdown-item.text-danger:hover {
    background-color: var(--vdr-danger-soft);
}

/* Empty state */
.vdr-empty {
    text-align: center;
    padding: 4rem 1.5rem;
    color: var(--vdr-text-muted);
}

.vdr-empty-icon {
    width: 64px;
    height: 64px;
    background-color: var(--vdr-accent-soft);
    color: var(--vdr-accent);
    border-radius: var(--vdr-radius-xl);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.vdr-empty h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--vdr-text);
    margin-bottom: 0.25rem;
}

.vdr-empty p {
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Auth */
.vdr-auth-page {
    min-height: 100vh;
    display: flex;
    background-color: var(--vdr-bg);
}

.vdr-auth-hero {
    flex: 1;
    background: linear-gradient(135deg, var(--vdr-primary) 0%, var(--vdr-primary-light) 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.vdr-auth-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.vdr-auth-hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    max-width: 500px;
}

.vdr-auth-hero p {
    font-size: 1.125rem;
    opacity: 0.8;
    max-width: 450px;
}

.vdr-auth-form {
    width: 100%;
    max-width: 460px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.vdr-auth-card {
    background: var(--vdr-surface);
    border-radius: var(--vdr-radius-xl);
    box-shadow: var(--vdr-shadow-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 460px;
}

.vdr-auth-logo {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--vdr-accent) 0%, #6366f1 100%);
    border-radius: var(--vdr-radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
}

.vdr-auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.375rem;
}

.vdr-auth-subtitle {
    color: var(--vdr-text-muted);
    font-size: 0.9375rem;
    margin-bottom: 1.75rem;
}

/* Alerts */
.vdr-alert {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--vdr-radius);
    border: 1px solid transparent;
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

.vdr-alert-danger {
    background-color: var(--vdr-danger-soft);
    border-color: #fecaca;
    color: #991b1b;
}

.vdr-alert-success {
    background-color: var(--vdr-success-soft);
    border-color: #a7f3d0;
    color: #065f46;
}

.vdr-alert-warning {
    background-color: var(--vdr-warning-soft);
    border-color: #fde68a;
    color: #92400e;
}

.vdr-alert-info {
    background-color: var(--vdr-info-soft);
    border-color: #c7d2fe;
    color: #3730a3;
}

/* Toasts */
.vdr-toast-container {
    position: fixed;
    top: calc(var(--vdr-topbar-height) + 1rem);
    right: 1.5rem;
    z-index: 1080;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 360px;
    max-width: calc(100vw - 2rem);
}

.vdr-toast {
    background-color: var(--vdr-surface);
    border: 1px solid var(--vdr-border);
    border-radius: var(--vdr-radius-lg);
    box-shadow: var(--vdr-shadow-lg);
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    animation: slideIn 0.2s ease-out;
}

.vdr-toast.success {
    border-left: 4px solid var(--vdr-success);
}

.vdr-toast.error {
    border-left: 4px solid var(--vdr-danger);
}

.vdr-toast.warning {
    border-left: 4px solid var(--vdr-warning);
}

.vdr-toast.info {
    border-left: 4px solid var(--vdr-info);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Utilities */
.text-accent { color: var(--vdr-accent) !important; }
.text-muted { color: var(--vdr-text-muted) !important; }
.text-success { color: var(--vdr-success) !important; }
.text-danger { color: var(--vdr-danger) !important; }
.bg-accent-soft { background-color: var(--vdr-accent-soft) !important; }
.letter-spacing-2 { letter-spacing: 0.25rem; }

.fade-in {
    animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Blazor error UI */
#blazor-error-ui {
    background: var(--vdr-danger);
    color: #fff;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0,0,0,0.2);
    display: none;
    left: 0;
    padding: 0.75rem 1.5rem;
    position: fixed;
    width: 100%;
    z-index: 10000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 1.5rem;
    top: 0.75rem;
}

#blazor-error-ui .reload {
    color: #fff;
    text-decoration: underline;
    margin-left: 0.5rem;
}

/* Responsive */
@media (max-width: 991.98px) {
    .vdr-sidebar {
        transform: translateX(-100%);
    }

    .vdr-sidebar.show {
        transform: translateX(0);
    }

    .vdr-main {
        margin-left: 0;
    }

    .vdr-topbar .btn-menu {
        display: inline-flex;
    }

    .vdr-auth-hero {
        display: none;
    }

    .vdr-auth-form {
        max-width: 100%;
        padding: 1.5rem;
    }
}

@media (min-width: 992px) {
    .vdr-sidebar-overlay {
        display: none !important;
    }
}

/* Bootstrap overrides */
.spinner-border.text-accent {
    color: var(--vdr-accent) !important;
}

.progress-bar {
    background-color: var(--vdr-accent);
}