* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", sans-serif;
    background: radial-gradient(circle at top left, #1a1a1a, #0e0e0e 60%);
    color: white;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Dashboard container */
.dashboard {
    width: 90%;
    max-width: 1400px;
}

/* Top Navigation */
.top-nav {
    display: flex;
    gap: 50px;
    margin-bottom: 50px;
    font-size: 1.3rem;
    letter-spacing: 1px;
}

.nav-item {
    opacity: 0.5;
    cursor: pointer;
    transition: 0.3s;
}

.nav-item.active {
    opacity: 1;
    border-bottom: 3px solid #107C10;
    padding-bottom: 6px;
}

/* Tile Row */
.tile-row {
    display: flex;
    gap: 20px;
    transition: transform 0.4s ease;
}

/* Base Tile */
.tile {
    background: #1f1f1f;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.tile span {
    font-size: 1.1rem;
}

/* Sizes */
.large {
    width: 320px;
    height: 320px;
}

.medium {
    width: 220px;
    height: 220px;
}

.small {
    width: 150px;
    height: 150px;
}

/* Focus effect (Xbox highlight) */
.tile.focus {
    outline: 4px solid #107C10;
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(16,124,16,0.6);
}