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

html, body {
    height: 100%;
    background: #000;
    color: #fff;
    font-family: 'Unbounded', system-ui, sans-serif;
}

body {
    display: grid;
    place-items: center;
    overflow: hidden;
}

.gate {
    text-align: center;
    padding: 24px 16px;
}

.title {
    font-weight: 800;
    font-size: clamp(32px, 8vw, 88px);
    letter-spacing: -0.02em;
    line-height: 1.05;
    opacity: 0;
    filter: blur(14px);
    transform: translateY(24px) scale(0.96);
    animation: reveal 1.4s cubic-bezier(.2,.7,.2,1) .2s forwards;
}

.subtitle {
    margin-top: 22px;
    font-weight: 300;
    font-size: clamp(13px, 2.2vw, 18px);
    color: #9a9a9a;
    opacity: 0;
    animation: fade 1s ease 1.3s forwards;
}

.form {
    margin: 40px auto 0;
    display: flex;
    gap: 10px;
    justify-content: center;
    opacity: 0;
    animation: fade 1s ease 1.9s forwards;
}

.pass {
    width: min(260px, 60vw);
    padding: 16px 20px;
    background: #0d0d0d;
    border: 1px solid #2a2a2a;
    border-radius: 14px;
    color: #fff;
    font: 500 20px 'Unbounded', sans-serif;
    letter-spacing: .3em;
    text-align: center;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
}
.pass:focus {
    border-color: #fff;
    box-shadow: 0 0 0 4px rgba(255,255,255,.08);
}

.go {
    width: 58px;
    border: 0;
    border-radius: 14px;
    background: #fff;
    color: #000;
    font: 800 22px 'Unbounded', sans-serif;
    cursor: pointer;
    transition: transform .15s;
}
.go:hover  { transform: translateX(3px); }
.go:active { transform: scale(.95); }

.error {
    margin-top: 18px;
    font-size: 13px;
    color: #ff5a5a;
}

.shake { opacity: 1; animation: shake .45s ease; }

@keyframes reveal { to { opacity: 1; filter: blur(0); transform: none; } }
@keyframes fade   { to { opacity: 1; } }
@keyframes shake {
    20%, 60% { transform: translateX(-8px); }
    40%, 80% { transform: translateX(8px); }
}