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

/* Body */
body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: #f5f7fa;
    color: #333;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: #0f172a;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    z-index: 1000;
}

.nav-left a {
    font-size: 20px;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-right {
    display: flex;
    align-items: center;
}

.nav-right a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    transition: 0.3s;
}

.nav-right a:hover {
    color: #38bdf8;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    height: 3px;
    width: 25px;
    background: white;
    margin: 4px 0;
    transition: 0.4s;
}

/* Hamburger animation */
.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Content */
.content {
    flex: 1;
    padding: 120px 20px 80px 20px;
    text-align: center;
    position: relative;
}

.page-title {
    font-size: 40px;
    margin-bottom: 30px;
}

/* Watermark */
.watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.5;
    width: 400px;
    z-index: 0;
}

/* Footer */
.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background: #0f172a;
    color: white;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {

    .hamburger {
        display: flex;
    }

    .nav-right {
        position: absolute;
        top: 70px;
        right: 0;
        background: #0f172a;
        width: 100%;
        flex-direction: column;
        align-items: center;
        display: none;
        padding: 20px 0;
    }

    .nav-right a {
        margin: 10px 0;
        font-size: 18px;
    }

    .nav-right.active {
        display: flex;
    }

    .watermark {
        width: 250px;
    }

    .page-title {
        font-size: 28px;
    }
}