:root {
    --primary: #4F46E5;
    --primary-soft: rgba(79, 70, 229, 0.1);
    --secondary: #06B6D4;
    --secondary-soft: rgba(6, 182, 212, 0.1);
    --accent: #22C55E;
    --accent-soft: rgba(34, 197, 94, 0.1);
    --success-soft: rgba(34, 197, 94, 0.1);
    --info-soft: rgba(6, 182, 212, 0.1);
    --warning-soft: rgba(245, 158, 11, 0.1);
    --dark: #0F172A;
    --light: #F8FAFC;
    --white: #ffffff;

    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;

    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Poppins', sans-serif;

    --sidebar-width: 260px;
    --topbar-height: 70px;
    --border-radius: 12px;
    --transition-base: all 0.3s ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--light);
    color: var(--gray-700);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transition: var(--transition-base);
}

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
}

.sidebar .nav-link {
    padding: 0.8rem 1.5rem;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-base);
    border-left: 3px solid transparent;
}

.sidebar .nav-link i {
    width: 20px;
    text-align: center;
}

.sidebar .nav-link:hover {
    color: var(--primary);
    background-color: var(--primary-soft);
}

.sidebar .nav-link.active {
    color: var(--primary);
    background-color: var(--primary-soft);
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-footer {
    padding: 1.5rem;
    margin-top: auto;
}

.upgrade-card {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 1.25rem;
    border-radius: var(--border-radius);
    color: var(--white);
    font-size: 0.9rem;
    text-align: center;
}

/* Content Area */
.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: var(--topbar-height);
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 999;
}

.search-container {
    position: relative;
    width: 300px;
}

.table-search {
    position: relative;
    width: 100%;
    max-width: 300px;
}

.table-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    pointer-events: none;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

.table-search input {
    padding-left: 2.5rem !important;
    border-radius: 8px;
    border: 1px solid var(--gray-200);
    background-color: var(--light);
    font-size: 0.85rem;
    transition: var(--transition-base);
    height: 38px;
}

.table-search input:focus {
    background-color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
    outline: none;
}

.user-actions {
    display: flex;
    align-items: center;
}

.profile img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--gray-100);
}

/* KPI Cards */
.kpi-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: transform 0.2s ease;
}

.kpi-card:hover {
    transform: translateY(-5px);
}

.kpi-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.kpi-info .label {
    font-size: 0.85rem;
    color: var(--gray-500);
    display: block;
    margin-bottom: 0.25rem;
}

.kpi-info .value {
    margin-bottom: 0;
    font-size: 1.5rem;
}

/* Tables */
.table th {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    color: var(--gray-500);
    border-top: none;
}

.table td {
    padding: 1rem 0.75rem;
    color: var(--gray-700);
}

.empty-state {
    color: var(--gray-400);
}

/* Buttons and UI Elements */
.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    font-weight: 500;
    transition: var(--transition-base);
}

.btn-primary:hover {
    background-color: #3f38c9;
    border-color: #3f38c9;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.bg-primary-soft { background-color: var(--primary-soft); }
.bg-success-soft { background-color: var(--success-soft); }
.bg-info-soft { background-color: var(--info-soft); }
.bg-warning-soft { background-color: var(--warning-soft); }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Functional Overlays */
.overlay-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

#blocked-screen {
    background-color: #FFF5F5;
}

.p-max-width {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .content {
        margin-left: 0;
    }
}

/* QR Code Responsive High-Res */
#qr-code-container canvas {
    max-width: 100% !important;
    height: auto !important;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}