/* ====================================================================
   DESIGN SYSTEM & CORE STYLES - CLOUD COST DASHBOARD
   Đề tài: Dashboard Quản lý và Tối ưu chi phí Cloud cơ bản
   Phong cách: Modern SaaS Dashboard, Clean, Professional, Student-Friendly
   ==================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Brand Colors */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);

    /* Cloud Provider Colors */
    --aws-color: #ff9900;
    --aws-bg: #fff8eb;
    --gcp-color: #4285f4;
    --gcp-bg: #eff6ff;
    --azure-color: #0078d4;
    --azure-bg: #e6f4ff;

    /* Semantic Status Colors */
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --info: #06b6d4;
    --info-bg: #ecfeff;

    /* Neutrals & Surfaces */
    --sidebar-bg: #0f172a;
    --sidebar-hover: #1e293b;
    --sidebar-active: #3b82f6;
    --sidebar-text: #94a3b8;
    --sidebar-text-bright: #f8fafc;

    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-subtle: #f1f5f9;
    --border-color: #e2e8f0;
    --border-color-hover: #cbd5e1;

    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;

    /* Layout Metrics */
    --sidebar-width: 260px;
    --header-height: 72px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-card: 0 2px 8px -2px rgba(15, 23, 42, 0.06), 0 1px 4px -1px rgba(15, 23, 42, 0.04);
    --shadow-hover: 0 12px 24px -4px rgba(15, 23, 42, 0.12);

    /* Transitions */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====================================================================
   BASE & RESET
   ==================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ====================================================================
   APP LAYOUT (SIDEBAR + MAIN CONTENT)
   ==================================================================== */
.app-layout {
    display: flex;
    min-height: 100vh;
    width: 100vw;
}

/* --- SIDEBAR --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
}

.sidebar-brand {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.sidebar-brand-text h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--sidebar-text-bright);
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.sidebar-brand-text span {
    font-size: 11px;
    color: #38bdf8;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-menu {
    flex: 1;
    padding: 20px 12px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.menu-section-title {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: #475569;
    padding: 12px 12px 6px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--border-radius-md);
    color: var(--sidebar-text);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    position: relative;
}

.menu-item i {
    font-size: 18px;
    width: 22px;
    text-align: center;
    transition: var(--transition);
}

.menu-item:hover {
    background-color: var(--sidebar-hover);
    color: var(--sidebar-text-bright);
}

.menu-item.active {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.menu-item.active i {
    color: #ffffff;
}

.menu-badge {
    margin-left: auto;
    background-color: var(--danger);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
}

.menu-badge.badge-success {
    background-color: var(--success);
}

.sidebar-footer {
    padding: 12px 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background-color: rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.student-tag {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    flex: 1;
    min-width: 0;
    border: 1px solid transparent;
}

.student-tag:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateY(-1px);
}

.student-tag:active {
    transform: translateY(0);
}

.student-avatar {
    width: 36px;
    height: 36px;
    background: #334155;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease;
}

.student-tag:hover .student-avatar {
    transform: scale(1.06);
}

.student-info {
    min-width: 0;
    overflow: hidden;
}

.student-info h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--sidebar-text-bright);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.student-info p {
    font-size: 11px;
    color: var(--sidebar-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* --- MAIN WRAPPER --- */
.main-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--bg-body);
    width: calc(100vw - var(--sidebar-width));
}

/* --- TOP HEADER --- */
.top-header {
    height: var(--header-height);
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 18px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-main);
    cursor: pointer;
}

.demo-banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.demo-banner-badge i {
    color: #22c55e;
    font-size: 14px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-search {
    position: relative;
}

.header-search input {
    width: 240px;
    padding: 8px 14px 8px 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-body);
    font-size: 13px;
    transition: var(--transition);
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #ffffff;
    width: 280px;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.header-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 13px;
}

.header-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.header-btn:hover {
    background-color: var(--bg-card-subtle);
    color: var(--text-main);
}

.header-btn-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background-color: var(--danger);
    border-radius: 50%;
    border: 2px solid #ffffff;
}

.btn-primary-action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-gradient);
    color: #ffffff;
    border: none;
    padding: 9px 18px;
    border-radius: var(--border-radius-md);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
    transition: var(--transition);
}

.btn-primary-action:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

/* ====================================================================
   MAIN PAGE CONTENT
   ==================================================================== */
.content-body {
    padding: 32px;
    flex: 1;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title h1 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.page-title p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ====================================================================
   KPI CARDS GRID
   ==================================================================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 22px 20px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-color-hover);
}

.kpi-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.kpi-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-muted);
}

.kpi-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.icon-blue {
    background-color: var(--primary-light);
    color: var(--primary);
}

.icon-green {
    background-color: var(--success-bg);
    color: var(--success);
}

.icon-amber {
    background-color: var(--warning-bg);
    color: var(--warning);
}

.icon-purple {
    background-color: #f3e8ff;
    color: #9333ea;
}

.icon-cyan {
    background-color: var(--info-bg);
    color: var(--info);
}

.kpi-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.5px;
    line-height: 1.2;
    margin-bottom: 8px;
}

.kpi-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.kpi-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 6px;
}

.trend-up {
    background-color: var(--danger-bg);
    color: var(--danger);
}

.trend-down {
    background-color: var(--success-bg);
    color: var(--success);
}

.trend-neutral {
    background-color: var(--bg-card-subtle);
    color: var(--text-muted);
}

/* ====================================================================
   BUDGET BANNER / PROGRESS BAR
   ==================================================================== */
.budget-banner {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #ffffff;
    border-radius: var(--border-radius-lg);
    padding: 20px 24px;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    box-shadow: var(--shadow-md);
}

.budget-info h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.budget-info p {
    font-size: 13px;
    color: #94a3b8;
}

.budget-progress-container {
    flex: 1;
    max-width: 450px;
}

.budget-progress-labels {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #cbd5e1;
}

.progress-track {
    width: 100%;
    height: 10px;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981 0%, #f59e0b 70%, #ef4444 100%);
    border-radius: 10px;
    transition: width 0.8s ease-in-out;
}

/* ====================================================================
   CHARTS & SECTIONS GRID
   ==================================================================== */
.charts-grid-main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-bottom: 28px;
}

.charts-grid-secondary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 28px;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #ffffff;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title i {
    color: var(--primary);
}

.card-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body {
    padding: 24px;
    flex: 1;
    position: relative;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
}

/* ====================================================================
   DATA TABLES
   ==================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.data-table th {
    background-color: var(--bg-card-subtle);
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    vertical-align: middle;
    white-space: nowrap;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background-color: #f8fafc;
}

.data-table td .resource-code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-weight: 700;
    color: var(--primary);
    background-color: var(--primary-light);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 12px;
}

.data-table td .resource-meta {
    display: flex;
    flex-direction: column;
}

.data-table td .resource-name-text {
    font-weight: 600;
    color: var(--text-main);
}

.data-table td .resource-region-text {
    font-size: 11px;
    color: var(--text-muted);
}

.cost-highlight {
    font-weight: 700;
    color: var(--text-main);
    font-size: 14px;
}

/* ====================================================================
   BADGES & PILLS
   ==================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    line-height: 1;
}

/* Status Badges */
.badge-running {
    background-color: #dcfce7;
    color: #15803d;
    border: 1px solid #bbf7d0;
}

.badge-running::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #22c55e;
    animation: pulse 1.8s infinite;
}

.badge-stopped {
    background-color: #f1f5f9;
    color: #475569;
    border: 1px solid #cbd5e1;
}

.badge-idle {
    background-color: #fef3c7;
    color: #b45309;
    border: 1px solid #fde68a;
}

.badge-idle::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #f59e0b;
}

.badge-terminated {
    background-color: #fee2e2;
    color: #b91c1c;
    border: 1px solid #fca5a5;
}

/* Provider Badges */
.badge-provider-aws {
    background-color: var(--aws-bg);
    color: #b45309;
    border: 1px solid #fed7aa;
}

.badge-provider-gcp {
    background-color: var(--gcp-bg);
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}

.badge-provider-azure {
    background-color: var(--azure-bg);
    color: #0369a1;
    border: 1px solid #bae6fd;
}

/* Resource Type Badges */
.badge-type-compute {
    background-color: #e0f2fe;
    color: #0369a1;
}

.badge-type-storage {
    background-color: #f3e8ff;
    color: #7e22ce;
}

.badge-type-database {
    background-color: #fce7f3;
    color: #be185d;
}

.badge-type-network {
    background-color: #ccfbf1;
    color: #0f766e;
}

/* Alert Severity Badges */
.badge-severity-critical {
    background-color: #fee2e2;
    color: #dc2626;
    border: 1px solid #fca5a5;
}

.badge-severity-warning {
    background-color: #fef3c7;
    color: #d97706;
    border: 1px solid #fde68a;
}

.badge-severity-info {
    background-color: #e0f2fe;
    color: #0284c7;
    border: 1px solid #bae6fd;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 5px rgba(34, 197, 94, 0);
    }

    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

/* ====================================================================
   ACTION BUTTONS & CONTROLS
   ==================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--border-radius-md);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
    border-radius: var(--border-radius-sm);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
}

.btn-primary:hover {
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-main);
}

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

.btn-success {
    background-color: var(--success);
    color: #ffffff;
}

.btn-success:hover {
    background-color: #059669;
}

.btn-danger {
    background-color: var(--danger);
    color: #ffffff;
}

.btn-danger:hover {
    background-color: #dc2626;
}

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

.btn-outline-primary:hover {
    background-color: var(--primary);
    color: #ffffff;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
}

.btn-icon:hover {
    background-color: var(--bg-card-subtle);
    color: var(--text-main);
}

/* ====================================================================
   FILTER BARS & TOOLBARS
   ==================================================================== */
.filter-toolbar {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 16px 20px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    box-shadow: var(--shadow-sm);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.search-input-box {
    position: relative;
}

.search-input-box input {
    width: 260px;
    padding: 8px 14px 8px 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-body);
    font-size: 13px;
}

.search-input-box input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #ffffff;
}

.search-input-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 13px;
}

.filter-select {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-card);
    font-size: 13px;
    color: var(--text-main);
    cursor: pointer;
    outline: none;
}

.filter-select:focus {
    border-color: var(--primary);
}

/* ====================================================================
   ALERT & RECOMMENDATION CARDS
   ==================================================================== */
.alert-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 16px 20px;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    transition: var(--transition);
}

.alert-card.critical {
    border-left: 4px solid var(--danger);
    background-color: #fffafb;
}

.alert-card.warning {
    border-left: 4px solid var(--warning);
    background-color: #fffdf5;
}

.alert-card.info {
    border-left: 4px solid var(--info);
    background-color: #faffff;
}

.alert-icon {
    font-size: 20px;
    margin-top: 2px;
}

.alert-card.critical .alert-icon {
    color: var(--danger);
}

.alert-card.warning .alert-icon {
    color: var(--warning);
}

.alert-card.info .alert-icon {
    color: var(--info);
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-message {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.alert-suggestion {
    font-size: 12px;
    background-color: rgba(0, 0, 0, 0.03);
    padding: 6px 10px;
    border-radius: 6px;
    color: #334155;
    font-weight: 500;
}

/* Recommendation Card */
.rec-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px 24px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.rec-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color-hover);
}

.rec-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.rec-info p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.rec-saving-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: #ecfdf5;
    color: #059669;
    border: 1px solid #a7f3d0;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
}

/* ====================================================================
   MODAL COMPONENT
   ==================================================================== */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-dialog {
    background-color: #ffffff;
    border-radius: var(--border-radius-xl);
    width: 100%;
    max-width: 580px;
    box-shadow: var(--shadow-hover);
    overflow: hidden;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-backdrop.active .modal-dialog {
    transform: translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
    max-height: 75vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    background-color: var(--bg-card-subtle);
}

/* Form Controls */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-body);
    font-size: 13px;
    color: var(--text-main);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-help {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ====================================================================
   TOAST NOTIFICATION SYSTEM
   ==================================================================== */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
}

.toast {
    background-color: #ffffff;
    color: var(--text-main);
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-hover);
    border-left: 4px solid var(--primary);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    font-weight: 600;
    min-width: 300px;
    transform: translateX(100%);
    animation: slideInToast 0.3s forwards cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.success {
    border-left-color: var(--success);
}

.toast.danger {
    border-left-color: var(--danger);
}

.toast.warning {
    border-left-color: var(--warning);
}

@keyframes slideInToast {
    to {
        transform: translateX(0);
    }
}

/* ====================================================================
   LOADING SKELETON
   ==================================================================== */
.skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ====================================================================
   USER PROFILE MODAL STYLES (FINOPS ACCOUNT INFO)
   ==================================================================== */
.user-profile-modal-backdrop {
    z-index: 99999 !important;
}

.user-profile-modal-backdrop.active {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.user-profile-dialog {
    max-width: 560px;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
    background: #ffffff;
}

.user-profile-cover {
    height: 100px;
    background: linear-gradient(135deg, #1e3a8a 0%, #0284c7 50%, #0ea5e9 100%);
    position: relative;
    padding: 16px 20px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.user-profile-cover-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.user-profile-close-btn {
    background: rgba(0, 0, 0, 0.3);
    border: none;
    color: #ffffff;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.user-profile-close-btn:hover {
    background: rgba(239, 68, 68, 0.9);
    transform: scale(1.1);
}

.user-profile-header-content {
    padding: 0 24px 16px;
    margin-top: -36px;
    display: flex;
    align-items: flex-end;
    gap: 16px;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.user-profile-avatar-wrap {
    position: relative;
    flex-shrink: 0;
}

.user-profile-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 4px solid #ffffff;
    color: #ffffff;
    font-size: 24px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.user-online-pulse {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 14px;
    height: 14px;
    background-color: #10b981;
    border: 2.5px solid #ffffff;
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.4);
    animation: pulseOnline 2s infinite;
}

@keyframes pulseOnline {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }

    70% {
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

.user-profile-titles {
    flex: 1;
    min-width: 0;
}

.user-profile-name {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 6px;
    line-height: 1.2;
}

.user-profile-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.user-profile-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 12px;
}

.badge-student {
    background-color: rgba(16, 185, 129, 0.12);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-admin {
    background-color: rgba(37, 99, 235, 0.12);
    color: #2563eb;
    border: 1px solid rgba(37, 99, 235, 0.25);
}

.badge-viewer {
    background-color: rgba(100, 116, 139, 0.12);
    color: #475569;
    border: 1px solid rgba(100, 116, 139, 0.25);
}

.badge-status-online {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.user-profile-body {
    padding: 20px 24px;
}

.user-profile-section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.user-info-item {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 10px 14px;
    transition: var(--transition);
}

.user-info-item:hover {
    border-color: rgba(56, 189, 248, 0.4);
    background-color: #f0f9ff;
}

.info-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.info-label i {
    color: var(--primary);
    font-size: 11px;
}

.info-value {
    font-size: 13px;
    color: var(--text-main);
    word-break: break-word;
}

.uid-tag {
    display: inline-block;
    background: #e2e8f0;
    color: #334155;
    padding: 2px 8px;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 700;
    font-size: 12px;
}

.user-profile-note {
    margin-top: 14px;
    background-color: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: var(--border-radius-md);
    padding: 10px 14px;
    font-size: 12px;
    color: #0369a1;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.45;
}

.user-profile-note i {
    margin-top: 2px;
    font-size: 14px;
    color: #0284c7;
    flex-shrink: 0;
}

.user-profile-footer {
    background-color: #f8fafc;
    padding: 14px 24px;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 640px) {
    .user-info-grid {
        grid-template-columns: 1fr;
    }
}