body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #fafafa;
    color: #333;
}

.nav {
    position: fixed;
    inset-inline: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap);
    height: 64px;
    padding: 0 2vw;
    background: rgba(255, 255, 255, .7);
    backdrop-filter: blur(8px);
    filter: drop-shadow(5px 5px 10px rgba(255, 255, 255, .8));
    z-index: 100;
}

.logo {
    height: 30px;
    object-fit: cover;
    object-position: center;
    cursor: pointer;
    filter: invert(1);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 3vw;
}

.navItem {
    white-space: nowrap;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.navItem span {
    color: #000;
    font-size: 16px;
    position: relative;
    z-index: 6;
}

/* ---------- HAMBURGER (no JS) ---------- */
.nav-toggle {
    position: absolute;
    left: -9999px;
}

.nav-burger {
    display: none;
    width: 38px;
    height: 28px;
    position: relative;
    cursor: pointer;
    z-index: 130;
}

.nav-burger span {
    position: absolute;
    left: 0;
    right: 0;
    height: 3px;
    background: #000;
    border-radius: 2px;
    transform-origin: left center;
    transition: transform .25s ease, opacity .2s ease, width .25s ease;
}

.nav-burger span:nth-child(1) {
    top: 2px;
}

.nav-burger span:nth-child(2) {
    top: 12px;
}

.nav-burger span:nth-child(3) {
    top: 22px;
}

/* Burger -> X when checked (checkbox is BEFORE header) */
#nav-toggle:checked~header .nav-burger span:nth-child(1) {
    transform: rotate(38deg);
    width: 110%;
}

#nav-toggle:checked~header .nav-burger span:nth-child(2) {
    opacity: 0;
}

#nav-toggle:checked~header .nav-burger span:nth-child(3) {
    transform: rotate(-38deg);
    width: 110%;
}

/* ---------- FULLSCREEN OVERLAY MENU ---------- */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .92);
    color: #fff;
    display: grid;
    grid-template-rows: auto 1fr auto;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity .25s ease, transform .25s ease;
    z-index: 120;
}

#nav-toggle:checked+.menu-overlay {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.menu-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
}

.menu-top .overlay-logo img {
    height: 28px;
    filter: invert(1);
}

.menu-close {
    font-size: 34px;
    line-height: 1;
    color: #fff;
    cursor: pointer;
    user-select: none;
    padding: 6px 10px;
}

.menu-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: clamp(18px, 4vh, 40px);
    text-transform: lowercase;
    position: relative;
}

.menu-item {
    cursor: pointer;
}

.menu-link {
    position: relative;
    font-weight: 800;
    letter-spacing: .5px;
    text-decoration: none;
    color: rgba(255, 255, 255, .45);
    font-size: clamp(28px, 7vw, 64px);
    transition: color .2s ease, transform .2s ease;
}

.menu-link:hover {
    color: rgba(255, 255, 255, .85);
    transform: translateY(-2px);
}

.menu-link.active {
    color: #fff;
}

.menu-link.active::before {
    content: attr(data-num);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -58%);
    font-size: clamp(90px, 28vw, 240px);
    color: rgba(255, 255, 255, .08);
    font-weight: 900;
    pointer-events: none;
}

.menu-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 22px;
    padding: 18px 0 28px;
}

.menu-bottom img {
    height: 20px;
    filter: invert(1);
    opacity: .9;
}


a {
    color: #000000;
    text-decoration: none;
    font-weight: 550;
    font-size: 1rem;

}

.container {
    /* padding: 20vh; */
    padding-top: 10vh;
    width: 60vw;
    margin-left: 20vw;
    margin-right: 20vw;
    margin: 0 auto;
    height: 120vh;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

p {
    color: #555;
    margin-bottom: 30px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

input,
textarea {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    border: none;
    border-bottom: 2px solid #ccc;
    outline: none;
    background: transparent;
    transition: border-color 0.3s;
}

input:valid {
    background: #eaffea;
    /* greenish */
}

input:invalid {
    border-color: #e74c3c;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

.error-message {
    font-size: 0.9rem;
    color: #e74c3c;
    display: none;
}

input:invalid+.error-message {
    display: block;
}

button {
    margin-top: 3vh;
    align-self: flex-start;
    background: black;
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.3s;
    border-radius: 8px;
}

button:hover {
    background: #444;
}

.bottombar {
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    height: 1vh;
    gap: 18px;
    font-size: 1.2rem;
    padding-bottom: 2vh;
}

.bottomlink {
    height: 3vh;
    margin: 0px;
}


@media (max-width:768px) {

    /* NAV FIX: mobile should hide desktop links and show burger */
    .nav-right {
        display: none;
    }

    .nav-burger {
        display: block;
    }

    .comtainer {
        width: 90vw;
        padding-right: 5vw;
        padding-left: 5vw;
        margin: 0px;
    }
    form input,textarea{
        width: 85%;
    }
}

@media (max-width:560px) {
    .nav {
        height: 56px;
        padding: 0 4vw;
    }

    .logo {
        height: 26px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .comtainer {
        width: 90vw;
        padding-right: 5vw;
        padding-left: 5vw;
        margin: 0px;
    }
    form input,textarea{
        width: 85%;
    }

}

@media (max-width:380px) {
    .nav-burger {
        width: 32px;
        height: 24px;
    }

    .comtainer {
        width: 90vw;
        padding-right: 5vw;
        padding-left: 5vw;
        margin: 0px;
    }

    form input,textarea{
        width: 85%;
    }
}