body {
    background-color: #000;
    color: #ff0000;
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    overflow-y: scroll;
    position: relative;
}

header {
    background-color: #111;
    padding: 10px 0;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: #ff0000;
    text-decoration: none;
    font-size: 18px;
}

nav ul li a:hover {
    text-decoration: underline;
}

#fog {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('./img/fog.png') repeat;
    opacity: 0.05;
    animation: moveFog 60s linear infinite;
    z-index: 1;
}

@keyframes moveFog {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(100%);
    }
}

.intro {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.8);
}

#introVideo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    opacity: 0.5;
    filter: brightness(0.5);
}

.intro-content {
    z-index: 2;
}

.intro h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #c00000;
}

.intro p {
    font-size: 24px;
    margin-bottom: 40px;
}

.intro button {
    padding: 15px 30px;
    font-size: 20px;
    border: 2px solid #ff0000;
    background-color: #111;
    color: #ff0000;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border-radius: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 600;
}

.intro button:hover {
    background-color: #222;
}

.scrollText {
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    text-align: center;
    z-index: 3;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.scrollContent {
    margin-top: 100vh;
    padding: 50px;
    text-align: center;
    background: rgba(0, 0, 0, 0.9);
}

.scrollContent h3 {
    font-size: 36px;
    margin-bottom: 20px;
}

.scrollContent p {
    font-size: 18px;
}

body.scrolled .scrollText {
    opacity: 1;
}

@keyframes flicker {
    0%, 100% {
        text-shadow: 
            0 0 5px #ff0000,
            0 0 10px #ff0000,
            0 0 15px #ff0000,
            0 0 20px #ff0000;
        opacity: 1;
    }
    50% {
        text-shadow: 
            0 0 2px #ff0000,
            0 0 3px #ff0000,
            0 0 4px #ff0000,
            0 0 6px #ff0000,
            0 0 7px #ff0000,
            0 0 9px #ff0000,
            0 0 10px #ff0000;
        opacity: 0.8;
    }
    70% {
        text-shadow: 
            0 0 1px #ff0000,
            0 0 2px #ff0000,
            0 0 3px #ff0000,
            0 0 4px #ff0000,
            0 0 5px #ff0000,
            0 0 6px #ff0000,
            0 0 7px #ff0000;
        opacity: 0.5;
    }
}

.flickering-glow {
    font-size: 48px;
    text-shadow: 
        0 0 5px #ff0000,
        0 0 7px #ff0000,
        0 0 8px #ff0000,
        0 0 10px #ff0000;
    animation: flicker 1.5s infinite alternate;
    color: #ff0000;
    text-align: center;
    margin: 0;
    padding: 20px;
}

@keyframes fillSmooth {
    0% {
        background-size: 0% 100%;
    }
    100% {
        background-size: 100% 100%;
    }
}

#startButton {
    padding: 15px 30px;
    font-size: 20px;
    border: 2px solid #ff0000;
    background: linear-gradient(to right, #ff0000 0%, #ff0000 100%);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    transition: background-size 0.5s ease-in-out;
    color: #fff;
    cursor: pointer;
    border-radius: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 600;
    position: relative; /* Mantém o botão estático */
}

#startButton.hold-fill {
    animation: fillSmooth 7s forwards;
}

@keyframes shakeViolent {
    0% {
        transform: translate(0, 0);
    }
    10% {
        transform: translate(-5px, -5px);
    }
    20% {
        transform: translate(5px, 0px);
    }
    30% {
        transform: translate(-5px, 5px);
    }
    40% {
        transform: translate(5px, -5px);
    }
    50% {
        transform: translate(-5px, 0px);
    }
    60% {
        transform: translate(5px, 5px);
    }
    70% {
        transform: translate(-5px, -5px);
    }
    80% {
        transform: translate(5px, 5px);
    }
    90% {
        transform: translate(-5px, -5px);
    }
    100% {
        transform: translate(0, 0);
    }
}

.intro, header, .intro-content {
    position: relative; /* Garantir que o tremor não afete o botão */
}

.intro.hold-shake, header.hold-shake, .intro-content.hold-shake {
    animation: shakeViolent 1s infinite;
}

#startButton {
    padding: 15px 30px;
    font-size: 20px;
    border: 2px solid #ff0000;
    background: linear-gradient(to right, #ff0000 0%, #ff0000 100%);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    transition: background-size 0.5s ease-in-out;
    color: #ff0000;
    cursor: pointer;
    border-radius: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 600;
}

#startButton.hold-fill {
    animation: fillSmooth 3s linear forwards;
    color: #000;
}