.resizable-container {
    --building-color1: #aa80ff;
    --building-color2: #66cc99;
    --building-color3: #cc6699;
    --building-color4: #538cc6;
    --window-color1: #bb99ff;
    --window-color2: #8cd9b3;
    --window-color3: #d98cb3;
    --window-color4: #8cb3d9;
}

* {
    box-sizing: border-box;
}

body {
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

.background-buildings, .foreground-buildings {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
    justify-content: space-evenly;
    position: absolute;
    top: 0;
}

.building-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.window-wrap {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
}

.resizable-container .sky {
    background: radial-gradient(
            closest-corner circle at 15% 15%,
            #ffcf33,
            #ffcf33 20%,
            #ffff66 21%,
            #bbeeff 100%
    );
}

/* BACKGROUND BUILDINGS - "bb" stands for "background building" */
.bb1 {
    width: 10%;
    height: 70%;
}

.bb1a {
    width: 70%;
}

.bb1b {
    width: 80%;
}

.bb1c {
    width: 90%;
}

.bb1d {
    width: 100%;
    height: 70%;
    background: linear-gradient(
            var(--building-color1) 50%,
            var(--window-color1)
    );
}

.bb1-window {
    height: 10%;
    background: linear-gradient(
            var(--building-color1),
            var(--window-color1)
    );
}

.bb2 {
    width: 10%;
    height: 50%;
}

.bb2a {
    border-bottom: 5vh solid var(--building-color2);
    border-left: 5vw solid transparent;
    border-right: 5vw solid transparent;
}

.bb2b {
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
            var(--building-color2),
            var(--building-color2) 6%,
            var(--window-color2) 6%,
            var(--window-color2) 9%
    );
}

.bb3 {
    width: 10%;
    height: 55%;
    background: repeating-linear-gradient(
            90deg,
            var(--building-color3),
            var(--building-color3),
            var(--window-color3) 15%
    );
}

.bb4 {
    width: 11%;
    height: 58%;
}

.bb4a {
    width: 3%;
    height: 10%;
    background-color: var(--building-color4);
}

.bb4b {
    width: 80%;
    height: 5%;
    background-color: var(--building-color4);
}

.bb4c {
    width: 100%;
    height: 85%;
    background-color: var(--building-color4);
}

.bb4-window {
    width: 18%;
    height: 90%;
    background-color: var(--window-color4);
}

/* FOREGROUND BUILDINGS - "fb" stands for "foreground building" */
.fb1 {
    width: 10%;
    height: 60%;
}

.fb1a {
    border-bottom: 7vh solid var(--building-color4);
    border-left: 2vw solid transparent;
    border-right: 2vw solid transparent;
}

.fb1b {
    width: 60%;
    height: 10%;
    background-color: var(--building-color4);
}

.fb1c {
    width: 100%;
    height: 80%;
    background: repeating-linear-gradient(
            90deg,
            var(--building-color4),
            var(--building-color4) 10%,
            transparent 10%,
            transparent 15%
    ),
    repeating-linear-gradient(
            var(--building-color4),
            var(--building-color4) 10%,
            var(--window-color4) 10%,
            var(--window-color4) 90%
    );
}

.fb2 {
    width: 10%;
    height: 40%;
}

.fb2a {
    width: 100%;
    border-bottom: 10vh solid var(--building-color3);
    border-left: 1vw solid transparent;
    border-right: 1vw solid transparent;
}

.fb2b {
    width: 100%;
    height: 75%;
    background-color: var(--building-color3);
}

.fb2-window {
    width: 22%;
    height: 100%;
    background-color: var(--window-color3);
}

.fb3 {
    width: 10%;
    height: 35%;
}

.fb3a {
    width: 80%;
    height: 15%;
    background-color: var(--building-color1);
}

.fb3b {
    width: 100%;
    height: 35%;
    background-color: var(--building-color1);
}

.fb3-window {
    width: 25%;
    height: 80%;
    background-color: var(--window-color1);
}

.fb4 {
    width: 8%;
    height: 45%;
    position: relative;
    left: 10%;
}

.fb4a {
    border-top: 5vh solid transparent;
    border-left: 8vw solid var(--building-color1);
}

.fb4b {
    width: 100%;
    height: 89%;
    background-color: var(--building-color1);
    display: flex;
    flex-wrap: wrap;
}

.fb4-window {
    width: 30%;
    height: 10%;
    border-radius: 50%;
    background-color: var(--window-color1);
    margin: 10%;
}

.fb5 {
    width: 10%;
    height: 33%;
    position: relative;
    right: 10%;
    background: repeating-linear-gradient(
            var(--building-color2),
            var(--building-color2) 5%,
            transparent 5%,
            transparent 10%
    ),
    repeating-linear-gradient(
            90deg,
            var(--building-color2),
            var(--building-color2) 12%,
            var(--window-color2) 12%,
            var(--window-color2) 44%
    );
}

.fb6 {
    width: 9%;
    height: 38%;
    background: repeating-linear-gradient(
            90deg,
            var(--building-color3),
            var(--building-color3) 10%,
            transparent 10%,
            transparent 30%
    ),
    repeating-linear-gradient(
            var(--building-color3),
            var(--building-color3) 10%,
            var(--window-color3) 10%,
            var(--window-color3) 30%
    );
}

.resizable-container.dark-mode {
    --building-color1: #000;
    --building-color2: #000;
    --building-color3: #000;
    --building-color4: #000;
    --window-color1: #777;
    --window-color2: #777;
    --window-color3: #777;
    --window-color4: #777;
}

.resizable-container.dark-mode .sky {
    background: radial-gradient(
            closest-corner circle at 15% 15%,
            #ccc,
            #ccc 20%,
            #445 21%,
            #223 100%
    );
}


#toggleTheme {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 24px;
    font-size: 18px;
    font-weight: bold;
    background-color: rgba(51, 51, 51, 0.9);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

#toggleTheme:hover {
    background-color: rgba(85, 85, 85, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

#toggleTheme:active {
    background-color: rgba(102, 102, 102, 0.9);
    transform: translateY(0);
}

#toggleTheme:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
}

@media (max-width: 600px) {
    #toggleTheme {
        padding: 10px 20px;
        font-size: 16px;
        top: 10px;
        right: 10px;
    }
}

@media (max-width: 1000px) {
    :root {
        --building-color1: #000;
        --building-color2: #000;
        --building-color3: #000;
        --building-color4: #000;
        --window-color1: #777;
        --window-color2: #777;
        --window-color3: #777;
        --window-color4: #777;
    }

    .sky {
        background: radial-gradient(
                closest-corner circle at 15% 15%,
                #ccc,
                #ccc 20%,
                #445 21%,
                #223 100%
        );
    }
}