:root {
    --color-bg: hsl(218, 100%, 2%);
    --color-bg-2: hsl(218, 60%, 5%);
    --color-accent: hsl(189, 54%, 82%);
    --color-accent-light: hsl(189, 100%, 96%);
    --color-accent-dark: hsla(207, 58%, 60%, 0.5);
    --color-border: hsl(218, 44%, 29%);
    --color-card-bg: hsl(218, 39%, 10%);
    --color-tags-bg: hsl(218, 44%, 5%);
    --color-shadow-outer: hsla(218, 79%, 27%, 0.204);
    --color-shadow-inner: hsla(218, 100%, 0%, 0.98);
    --color-solution: #0fd512;
}

html {
  scroll-behavior: smooth;
}

body {
    box-sizing: border-box;
    height: 100vh;
    margin: 0;
    padding: 24px;
    padding-top: 96px;
    background-color: var(--color-bg-2);
    display: flex;
    justify-content: center;
}

#greeting {
    color: var(--color-accent-light);
}

#issue-list {
    box-sizing: border-box;
    width: 960px;
    max-width: 100%;
    height: 100%;
    overflow-y: auto;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--color-border);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    border-radius: 16px;
}

.issue-item {
    flex-shrink: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.issue-card {
    flex-shrink: 0;
    width: 100%;
    font-family: "ABeeZee", sans-serif;
    box-sizing: border-box;
    min-height: 80px;
    padding: 0px;
    border-radius: 16px;
    border: 1px solid var(--color-border);
    background-color: var(--color-card-bg);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    align-items: stretch;
    filter:
        drop-shadow(0 6px 6px var(--color-shadow-outer))
        drop-shadow(0 3px 3px var(--color-shadow-inner));
    position: relative;
    z-index: 1;
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.solution-toggle {
    /* position: absolute; */
    /* top: 8px; */
    /* right: 8px; */
    /* z-index: 1; */
    width: 64px;
    height: 32px;
    padding: 0;
    border: 1px solid var(--color-solution);
    border-radius: 8px;
    background-color: var(--color-tags-bg);
    color: var(--color-solution);
    cursor: pointer;
    font-size: 12px;
    font-weight: bold;
}

.solution-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.issue-number:hover > .issue-number,
.issue-number:hover > .issue-body {
    opacity: 0;
}

.issue-number:hover > .issue-hover-overlay {
    opacity: 1;
}

.issue-hover-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    color: var(--color-accent);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.issue-number {
    text-decoration: none;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    min-width: 120px;
    box-sizing: border-box;
    border-radius: 16px 0 0 16px;
    border-right: none;
    padding-top: 8px;
    padding-bottom: 8px;
    padding-left: 16px;
    padding-right: 16px;
    font-weight: bold;
    color: var(--color-accent);
    transition: opacity 0.2s ease;
    cursor: pointer;
}

.issue-body { 
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-end;
    flex: 1;
    transition: opacity 0.2s ease;
}

    
.issue-title-box {
    align-items: center;
    display: flex;
    flex-direction: row;
    box-sizing: border-box;
    padding: 8px;
}

.issue-title {
    font-family: "Nunito", sans-serif;
    box-sizing: border-box;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    color: var(--color-accent-dark);
    flex-grow: 1;
}


.issue-solution {
    font-family: "Nunito", sans-serif;
    box-sizing: border-box;
    position: relative;
    z-index: 0;
    max-height: 0;
    margin: 0 16px;
    overflow: hidden;
    padding: 0 8px;
    border: solid var(--color-border);
    border-width: 0 1px;
    border-radius: 0 0 8px 8px;
    background-color: var(--color-tags-bg);
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;

    color: var(--color-solution);
    opacity: 0;
    transition: max-height 0.25s ease, margin 0.25s ease, padding 0.25s ease, opacity 0.25s ease;
}

.issue-item.has-visible-solution .issue-solution {
    /* max-height: 40px; */
    margin: -16px 16px 0;
    padding: 24px;
    padding-top: 40px;
    border-width: 1px;
    opacity: 1;
}

.issue-tags {
    box-sizing: border-box;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    justify-content: stretch;
    border-left: 1px solid var(--color-border);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-tags-bg);
    border-radius: 16px 0 0 0;
    padding: 4px 4px 4px 8px;
}

.issue-tag {
    box-sizing: border-box;
    border-radius: 8px;
    border: 1px solid var(--tag-color, var(--color-border));
    background-color: color-mix(in srgb, var(--tag-color, var(--color-border)) 30%, black);
    padding: 8px;
    font-size: 16px;
    color: var(--tag-color, var(--color-accent));
}