/* General Reset & Core Layout Styles */
body {
    background-color: var(--bg-color, #282c34);
    color: var(--text-color, #abb2bf);
    font-family: var(--font-sans, 'Inter', sans-serif);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background-color: var(--header-bg-color, #21252b);
    padding: 1rem 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

.container {
    display: flex;
    min-height: calc(100vh - 75px);
    width: 100%;
}

/* Scrollbars customized */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Pane layout containers */
.left-pane, .right-pane {
    background-color: var(--panel-bg-color, #21252b);
    line-height: normal;
}

/* Section elements styling */
.nav-item.active-section a {
    color: var(--accent-color) !important;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-block {
    animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}