@font-face {
    font-family: 'Intro';
    src: url('fonts/intro.otf') format('opentype');
}

@font-face {
    font-family: 'Halvar';
    src: url('fonts/halvar_breitschrift.ttf') format('truetype');
}

body {
    background: url('img/1.jpg') no-repeat center center fixed;
    background-size: cover;
    margin: 0;
    height: 100%;
    overflow: auto;
    font-family: 'Intro', sans-serif;
}

.button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin-top: 60px;
    width: 100%;
}

.container {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin-top: 240px;
    position: relative;
}

.container img.skull {
    width: 110px;
    margin: -3px;
    transition: transform 0.5s cubic-bezier(0.32, 0.64, 0.45, 1);
    position: relative;
    z-index: 2;
}

#diamond {
    position: absolute;
    width: 120px;
    z-index: 1;
    display: none;
    pointer-events: none;
}

#message {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 64px;
    margin-top: -450px;
}

.glass-message {
    display: inline-block;
    padding: 20px 38px;
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.12);
    box-shadow:
        0 4px 24px 0 rgba(0, 0, 0, 0.12),
        0 0 0 2px rgba(255, 255, 255, 0.23) inset,
        0 0 0 6px rgba(16, 185, 129, 0.10) inset;
    border: 2.5px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #fff;
    font-family: 'Halvar', sans-serif;
    font-size: 2.1rem;
    font-weight: bold;
    letter-spacing: 1.5px;
    text-align: center;
    text-shadow: 0 2px 12px #0008, 0 1px 0 #fff4;
    transition: box-shadow 0.2s, background 0.2s;
    user-select: none;
    margin: 0 auto;
}

.start-button {
    font-size: 16px;
    font-weight: bold;
    padding: 12px 24px;
    width: 130px;
    border-radius: 25px;
    background: linear-gradient(145deg, #e52d27 0%, #b31217 100%);
    box-shadow: 0 6px #9f0f0f, 0 -6px #e52d27 inset;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    font-family: 'Intro', sans-serif;
}

.start-button:hover {
    background: linear-gradient(145deg, #b31217 0%, #e52d27 100%);
    box-shadow: 0 8px #9f0f0f, 0 -6px #e52d27 inset;
    transform: translateY(-3px);
}

.start-button:active {
    box-shadow: 0 3px #9f0f0f, 0 -3px #e52d27 inset;
    transform: translateY(2px);
}

.return-button {
    font-size: 16px;
    font-weight: bold;
    padding: 12px 12px;
    width: 130px;
    border-radius: 25px;
    background: linear-gradient(145deg, #e52d27 0%, #b31217 100%);
    box-shadow: 0 6px #9f0f0f, 0 -6px #e52d27 inset;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    font-family: 'Intro', sans-serif;
    margin-top: 20px;
    text-align: center;
}

.return-button:hover {
    background: linear-gradient(145deg, #b31217 0%, #e52d27 100%);
    box-shadow: 0 8px #9f0f0f, 0 -6px #e52d27 inset;
    transform: translateY(-3px);
}

.return-button:active {
    box-shadow: 0 3px #9f0f0f, 0 -3px #e52d27 inset;
    transform: translateY(2px);
}

.selected-skull {
    filter: drop-shadow(0 0 40px #ffd700) brightness(1.15);
}