:root {
    --bg-color: #ebebeb;
    --win-bg: #ffffff;
    --win-border: #000000;
    --accent-green: #00ff00;
    --text-color: #000000;
    --grid-line: rgba(0, 0, 0, 0.05);
}
body {
    background-color: var(--bg-color);
    background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 25px 25px;
    color: var(--text-color);
    font-family: Monaco, Consolas, Courier, monospace;
    margin: 0;
    padding: 0;
}
.mac-header {
    background: var(--win-bg);
    border-bottom: 2px solid var(--win-border);
    height: 45px;
    position: sticky;
    top: 0;
    z-index: 999;
}
.mac-logo img {
    height: 32px;
    margin-top: 6px;
}
.nav-link {
    color: var(--text-color) !important;
    font-size: 14px;
    font-weight: bold;
}
.nav-link:hover {
    background: var(--win-border);
    color: #fff !important;
}
.mac-window {
    background: var(--win-bg);
    border: 2px solid var(--win-border);
    box-shadow: 6px 6px 0px var(--win-border);
    border-radius: 0px;
    margin-bottom: 30px;
    position: relative;
}
.mac-titlebar {
    background: var(--win-border);
    color: #ffffff;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--win-border);
}
.mac-close-btn {
    width: 12px;
    height: 12px;
    border: 1px solid #ffffff;
    background: #ffffff;
    cursor: pointer;
}
.mac-content {
    padding: 25px;
}
.mac-btn {
    background: var(--win-bg);
    color: var(--text-color) !important;
    border: 2px solid var(--win-border);
    border-radius: 0px;
    font-weight: bold;
    padding: 8px 24px;
    cursor: pointer;
    display: inline-block;
    box-shadow: 3px 3px 0px var(--win-border);
    transition: all 0.1s;
}
.mac-btn:hover {
    transform: translate(1px, 1px);
    box-shadow: 2px 2px 0px var(--win-border);
}
.mac-btn:active {
    transform: translate(3px, 3px);
    box-shadow: 0px 0px 0px var(--win-border);
}
.bottom-dock-nav {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--win-bg);
    border: 2px solid var(--win-border);
    box-shadow: 4px 4px 0px var(--win-border);
    padding: 10px 25px;
    display: flex;
    gap: 20px;
    z-index: 1000;
}
.dock-item {
    color: var(--text-color) !important;
    font-size: 13px;
    font-weight: bold;
    text-decoration: none;
    padding: 5px 10px;
}
.dock-item:hover {
    background: var(--win-border);
    color: #fff !important;
}