* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Cairo", sans-serif;
}

body {
    background-color: #f6f7fb;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ==== الشريط العلوي ==== */
.navbar {
    width: 100%;
    background-color: #2c3e50;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 40px;
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

    .navbar h2 {
        color: #f1c40f;
        font-size: 22px;
    }

.nav-links {
    display: flex;
    gap: 20px;
}

    .nav-links a {
        text-decoration: none;
        color: #ecf0f1;
        padding: 8px 14px;
        border-radius: 8px;
        transition: 0.3s;
    }

        .nav-links a:hover,
        .nav-links a.active {
            background-color: #34495e;
        }

/* ==== المحتوى ==== */
.main-content {
    flex: 1;
    padding: 100px 30px 30px;
    transition: opacity 0.6s ease;
    opacity: 1;
}

.fade-out {
    opacity: 0;
}

.main-content h1 {
    margin-bottom: 20px;
    color: #2c3e50;
}

/* ==== كروت ==== */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: #fff;
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

    .card:hover {
        transform: translateY(-5px);
    }

    .card h3 {
        color: #2c3e50;
        margin-bottom: 10px;
        font-size: 18px;
    }

    .card p {
        color: #7f8c8d;
        font-size: 16px;
    }

/* ==== الرسم البياني ==== */
section.chart-section {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
    padding: 20px;
    margin-top: 30px;
}

    section.chart-section h2 {
        color: #0b2956;
        margin-bottom: 8px;
        text-align: right;
    }

    section.chart-section p {
        color: #6b7280;
        margin-bottom: 20px;
        text-align: right;
    }

canvas {
    max-width: 100%;
    height: 280px !important;
}

/* ==== متجاوبة ==== */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px 20px;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: flex-start;
        margin-top: 10px;
    }

    canvas {
        height: 220px !important;
    }
}