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

body {
    background: #eee3d0;
    color: #30271f;
    font-family: Georgia, "Times New Roman", serif;
}


/* =========================
   ENTRY SCREEN
   ========================= */

.entry-screen {
    min-height: 100vh;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    text-align: center;
    padding: 40px;

    transition: opacity 1s ease, transform 1s ease;
}

.welcome {
    font-family: Arial, sans-serif;
    font-size: 14px;
    letter-spacing: 7px;
    margin-bottom: 25px;
}

.entry-screen h1 {
    font-size: clamp(55px, 10vw, 110px);
    line-height: 0.9;
    letter-spacing: -3px;
    margin-bottom: 35px;
}

.subtitle {
    font-family: Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    letter-spacing: 1px;
    max-width: 500px;
    margin-bottom: 45px;
}

#enterButton {
    background: transparent;
    border: 1px solid #30271f;

    padding: 17px 35px;

    font-family: Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 3px;

    cursor: pointer;

    transition: all 0.3s ease;
}

#enterButton:hover {
    background: #30271f;
    color: #eee3d0;
}


/* =========================
   MUSEUM HALL
   ========================= */

.museum-hall {
    min-height: 100vh;

    display: none;
    flex-direction: column;
    align-items: center;

    text-align: center;

    padding: 80px 30px;

    opacity: 0;
    transform: translateY(30px);

    transition: opacity 1s ease, transform 1s ease;
}

.hall-label {
    font-family: Arial, sans-serif;
    font-size: 12px;
    letter-spacing: 6px;
    margin-bottom: 25px;
}

.museum-hall h2,
.timeline-room h2 {
    font-size: clamp(45px, 8vw, 85px);
    line-height: 0.9;
    margin-bottom: 30px;
}

.hall-intro {
    font-family: Arial, sans-serif;
    line-height: 1.8;
    letter-spacing: 1px;
    margin-bottom: 60px;
}


/* =========================
   EXHIBITS
   ========================= */

.exhibits {
    width: min(900px, 100%);

    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.exhibit {
    min-height: 190px;

    background: rgba(255, 255, 255, 0.25);

    border: 1px solid #30271f;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    gap: 18px;

    color: #30271f;

    cursor: pointer;

    font-family: Arial, sans-serif;
    font-size: 12px;
    letter-spacing: 3px;

    transition: all 0.4s ease;
}

.exhibit:hover {
    background: #30271f;
    color: #eee3d0;
    transform: translateY(-5px);
}

.icon {
    font-size: 35px;
}

.secret {
    margin-top: 60px;

    font-family: Arial, sans-serif;
    font-size: 11px;
    letter-spacing: 3px;
    opacity: 0.6;
}


/* =========================
   TIMELINE ROOM
   ========================= */

.timeline-room {
    min-height: 100vh;

    display: none;
    flex-direction: column;
    align-items: center;

    text-align: center;

    padding: 80px 30px;
}


/* Timeline container */

.timeline {
    width: min(800px, 100%);

    display: flex;
    flex-direction: column;

    margin-top: 10px;
}


/* Individual timeline card */

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;

    gap: 25px;

    text-align: left;

    padding: 30px 0;

    border-top: 1px solid rgba(48, 39, 31, 0.4);
}

.timeline-item:last-child {
    border-bottom: 1px solid rgba(48, 39, 31, 0.4);
}


/* Number */

.timeline-number {
    font-family: Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 3px;
    opacity: 0.6;
}


/* Timeline heading */

.timeline-item h3 {
    font-family: Arial, sans-serif;
    font-size: 15px;
    letter-spacing: 3px;

    margin-bottom: 12px;
}


/* Timeline text */

.timeline-item p {
    font-family: Arial, sans-serif;
    font-size: 14px;
    line-height: 1.7;

    opacity: 0.75;
}


/* Back button */

.back-button {
    margin-top: 55px;

    background: transparent;

    border: 1px solid #30271f;

    padding: 15px 28px;

    color: #30271f;

    font-family: Arial, sans-serif;
    font-size: 11px;
    letter-spacing: 3px;

    cursor: pointer;

    transition: all 0.3s ease;
}

.back-button:hover {
    background: #30271f;
    color: #eee3d0;
}


/* =========================
   MOBILE
   ========================= */

@media (max-width: 600px) {

    .entry-screen {
        padding: 25px;
    }

    .entry-screen h1 {
        font-size: 55px;
    }

    .exhibits {
        grid-template-columns: 1fr;
    }

    .exhibit {
        min-height: 150px;
    }

    .timeline-item {
        grid-template-columns: 45px 1fr;
        gap: 15px;
    }

    .timeline-item h3 {
        font-size: 13px;
    }

    .timeline-item p {
        font-size: 13px;
    }
}