:root {
    --bg: #0d1117;
    --bg-elevated: #151b23;
    --border: #2a323c;
    --accent: #7aa2f7;
    --ok: #d7dce1;
    --print: #6b7683;
    --err: #ff5f6d;
    --text: #c9d1d9;
}

html,
body {
    height: 100%;
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Fira Code', 'Courier New', Courier, monospace, sans-serif;
}

#wrapper {
    position: fixed;
    left: 0;
    top: var(--app-top, 0px);
    width: 100%;
    display: flex;
    flex-flow: column;
    height: var(--app-height, 100dvh);
    overflow: hidden;
}

#paddle-deco {
    position: absolute;
    inset: 0;
    z-index: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    opacity: 0.18;
    font-size: 1.4rem;
    line-height: 1.2;
    pointer-events: none;
    user-select: none;
}

#output-area {
    position: relative;
    z-index: 1;
    display: flex;
    flex-flow: column;
    flex: 1 1 auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    touch-action: pan-y;
    padding: 12px;
    box-sizing: border-box;
}

#output {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-flow: column;
    gap: 8px;
}

li {
    background: rgba(21, 27, 35, 0.52);
    backdrop-filter: blur(2px);
    border: 1px solid var(--border);
    border-left: 3px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    white-space: pre-wrap;
    word-break: break-word;

    &::before {
        content: '[' attr(data-prompt) '] ';
        opacity: 0.5;
        font-weight: bold;
        white-space: pre;
    }

    &.err {
        border-left-color: var(--err);
        color: var(--err);
    }

    &.print {
        border-left-color: var(--print);
        color: var(--print);
    }

    &.ok {
        border-left-color: var(--ok);
        color: var(--ok);
    }

    &.src {
        border-left-color: var(--accent);
        color: var(--text);
        cursor: pointer;
    }

    &.src:hover {
        border-color: var(--accent);
    }
}

#input-area {
    position: relative;
    z-index: 1;
    flex: 0 0 auto;
    display: flex;
    align-items: stretch;
    margin: 12px;
    margin-bottom: max(12px, env(safe-area-inset-bottom));
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

#input-area:focus-within {
    border-color: var(--accent);
}

textarea {
    flex: 1 1 auto;
    width: 100%;
    min-height: 44px;
    margin: 0;
    padding: 10px 12px;
    box-sizing: border-box;
    background: transparent;
    color: var(--text);
    border: none;
    outline: none;
    resize: vertical;
    font: inherit;
    font-size: 16px;
}

#button-area {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border);
}

button {
    flex: 1 1 auto;
    min-width: 44px;
    min-height: 44px;
    margin: 0;
    padding: 0 16px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    border: none;
    border-bottom: 1px solid var(--border);
    font: inherit;
    font-size: 16px;
    cursor: pointer;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
    transition:
        background 0.15s ease,
        color 0.15s ease;
}

button:last-child {
    border-bottom: none;
}

button:hover {
    background: rgba(255, 255, 255, 0.07);
    color: var(--accent);
}

button:active {
    background: rgba(0, 0, 0, 0.3);
    box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.5);
}

@media (max-width: 600px) {
    #paddle-deco {
        font-size: 0.55rem;
    }

    #input-area {
        flex-direction: column;
    }

    textarea {
        min-height: 72px;
    }

    #button-area {
        flex-direction: row-reverse;
        border-left: none;
        border-top: 1px solid var(--border);
    }

    button {
        border-bottom: none;
        border-right: 1px solid var(--border);
    }

    button:last-child {
        border-right: none;
    }
}