:root {
    --primary-color-0: #007bff; /* blue */
    --primary-color-1: #28a745; /* green */
    --primary-color-2: #dc3545; /* red */

    --color-gray-0: #ffffff;
    --color-gray-5: #fcfcfc;
    --color-gray-15: #f9f9f9;
    --color-gray-25: #f5f6f8;
    --color-gray-50: #ebeef1;
    --color-gray-100: #d8dee4;
    --color-gray-200: #b6c0cd;
    --color-gray-300: #99a5b8;
    --color-gray-400: #818da0;
    --color-gray-500: #6c7688;
    --color-gray-600: #596171;
    --color-gray-700: #474e5a;
    --color-gray-800: #353a44;
    --color-gray-900: #21252c;

    --document-width: 1990px;

    --background-color: var(--color-gray-5);
    --border-color: #e7e9ed;
    --text-color: var(--color-gray-900);
    --shadow-color: rgba(0, 0, 0, 0.05);
    --default-box-shadow: 0px 4px 12px var(--shadow-color);
    --default-hover-box-shadow: 0px 8px 20px var(--shadow-color);
    
    --border-radius: 8px;
    --transition-speed: 0.25s;
    --scale-size-1: 1.02;
}

/* Layout wrapper */
.saas-layout {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
    background-color: var(--color-gray-15);
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
}

/* Sidebar */
.saas-layout .app-navbar {
    width: 220px;
    flex-shrink: 0;
    background: var(--color-gray-0);
    box-shadow: var(--default-box-shadow);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-speed);
}

.saas-layout .app-navbar .brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color-0);
    margin-bottom: 2rem;
}

.saas-layout .app-navbar .nav-link {
    color: var(--color-gray-700);
    font-weight: 500;
    padding: 0.5rem 0;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
}

.saas-layout .app-navbar .nav-link:hover {
    background-color: var(--color-gray-15);
    box-shadow: var(--default-hover-box-shadow);
    color: var(--primary-color-0);
}

/* Main content */
.saas-layout .app-content {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top navigation bar */
.saas-layout .top-nav {
    flex-shrink: 0;
    background: var(--color-gray-0);
    box-shadow: var(--default-box-shadow);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
}

.saas-layout .top-nav span {
    font-size: 0.95rem;
}

/* Wrapper for main content + right-col */
.saas-layout .wrapper {
    flex: 1 1 auto;
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    overflow: hidden;
}

/* Left column (main content) */
.saas-layout .left-col {
    flex: 1 1 auto;
    min-width: 0;
    background: var(--background-color);
    padding: 1.5rem;
    border: solid var(--border-color) 1px;
    overflow-x: auto;
}

/* Right column (filters, quick links, etc) */
.saas-layout .right-col {
    width: 300px;
    flex-shrink: 0;
    background: var(--background-color);
    padding: 1.5rem;
    border: solid var(--border-color) 1px;
    overflow-x: auto;
}

/* Scrollbar improvements */
.saas-layout .left-col::-webkit-scrollbar,
.saas-layout .right-col::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.saas-layout .left-col::-webkit-scrollbar-thumb,
.saas-layout .right-col::-webkit-scrollbar-thumb {
    background-color: var(--color-gray-300);
    border-radius: 3px;
}

.saas-layout .left-col::-webkit-scrollbar-track,
.saas-layout .right-col::-webkit-scrollbar-track {
    background-color: var(--color-gray-15);
}