:root {
    /* Refined Light Theme Palette */
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    
    --primary-blue: #2563eb;
    --primary-blue-soft: #eff6ff;
    --accent-mint: #10b981;
    --accent-mint-soft: #ecfdf5;
    
    --text-header: #0f172a;
    --text-body: #334155;
    --text-muted: #64748b;
    
    --border-light: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-body);
    min-height: 100vh;
    display: flex;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 3rem;
    padding: 0 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: #0f172a; /* Dark background like the screenshot */
    border-radius: 50%; /* Circular like the screenshot */
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    overflow: hidden;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-header);
    letter-spacing: -0.5px;
}

.nav-links {
    list-style: none;
    flex-grow: 1;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.875rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    gap: 12px;
    font-weight: 500;
}

.nav-link i {
    font-size: 1.1rem;
    width: 20px;
}

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

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

/* Main Content Area */
.main-wrapper {
    flex-grow: 1;
    margin-left: 280px;
    padding: 2rem 3rem;
    width: calc(100% - 280px); /* Ensure it takes remaining width */
    min-height: 100vh;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.page-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-header);
}

.page-title p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

.header-tools {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-box {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.25rem;
    width: 350px;
    display: flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.search-box:focus-within {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.search-box input {
    background: transparent;
    border: none;
    color: var(--text-header);
    margin-left: 10px;
    width: 100%;
    font-size: 0.95rem;
}

.search-box input:focus {
    outline: none;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease;
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

.icon-blue { background: var(--primary-blue-soft); color: var(--primary-blue); }
.icon-mint { background: var(--accent-mint-soft); color: var(--accent-mint); }
.icon-yellow { background: #fffbeb; color: #d97706; }
.icon-pink { background: #fdf2f8; color: #db2777; }

.stat-title {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    color: var(--text-header);
    font-size: 2rem;
    font-weight: 800;
    margin-top: 0.5rem;
}

/* Action Cards */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.action-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.action-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: scale(1.02);
}

.action-card i {
    font-size: 2.25rem;
    margin-bottom: 1.25rem;
    display: block;
}

.action-card h3 {
    font-size: 1.1rem;
    color: var(--text-header);
    font-weight: 700;
}

.action-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

@media (max-width: 1200px) {
    .main-wrapper { padding: 2rem; }
    .search-box { width: 100%; max-width: 300px; }
}

@media (max-width: 992px) {
    .sidebar { width: 80px; padding: 2rem 0.75rem; }
    .logo-text, .nav-text, .page-title p { display: none; }
    .main-wrapper { margin-left: 80px; width: calc(100% - 80px); }
    .nav-link { justify-content: center; padding: 1rem; }
    .nav-link i { margin: 0; font-size: 1.3rem; }
}

@media (max-width: 768px) {
    header { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
    .header-tools { width: 100%; justify-content: space-between; }
    .search-box { width: 100%; max-width: 100%; order: 2; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .action-grid { grid-template-columns: 1fr; }
    .main-wrapper { padding: 1.5rem; }
}