body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #eef2ff, #f8fafc);
}

.sidebar {
    min-height: 100vh;
    background: #111827;
}

.sidebar a {
    display: block;
    color: white;
    padding: 12px;
    margin: 5px 0;
    border-radius: 8px;
    transition: 0.3s;
}

.sidebar a:hover {
    background: #2563eb;
    transform: translateX(5px);
}

.card {
    border-radius: 15px;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.dark-mode {
    background: #0f172a !important;
    color: white !important;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
}

/* 🔥 BIG FOOTER */
footer {
    padding: 30px;
    font-size: 18px;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #111827, #1f2937);
    box-shadow: 0 -5px 15px rgba(0,0,0,0.2);
}