@import url("colours.css");

:root {
    --bt-line: hsl(310, 45%, 32%);
    --et-line: hsl(20, 60%, 42%);
    --ref-line: hsl(152, 30%, 32%);
    --history-line: hsl(100, 12%, 66%);
    --grid-line: hsl(300, 8%, 88%);
    --muted: hsl(300, 6%, 38%);
    --warn: hsl(32, 80%, 30%);
}

main {
    max-width: 110ch;
    margin: 0 auto;
}

h1 {
    font-family: monospace;
    font-size: clamp(1.3rem, 4vw, 1.8rem);
    font-weight: 900;
    color: var(--primary);
    margin: 0 0 1.5rem 0;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

h2 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 0.75rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--secondary);
}

h3 {
    font-size: 0.9rem;
    margin: 1.5rem 0 0.5rem 0;
}

section {
    margin: 0 0 3rem 0;
}

section[hidden],
[hidden] {
    display: none;
}

p {
    max-width: 90ch;
    line-height: 1.6;
}

.lede {
    margin: 0 0 2rem 0;
}

.hint,
.hint-inline,
.muted {
    color: var(--muted);
}

.hint-inline {
    font-size: 0.8rem;
}

.notice {
    padding: 0.75rem 1rem;
    border: 1px solid var(--warn);
    color: var(--warn);
}

code {
    background: var(--grid-line);
    padding: 0 0.3em;
}

/* file picker */
.drop-zone {
    position: relative;
    display: block;
    padding: 1.5rem;
    border: 2px dashed var(--primary);
    text-align: center;
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone:focus-within,
.drop-zone.dragging {
    background: var(--grid-line);
}

.drop-title {
    display: block;
    font-weight: bold;
}

.drop-sub {
    display: block;
    color: var(--muted);
    font-size: 0.8rem;
    margin-top: 0.3rem;
}

.drop-zone input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    font-size: 16px;
}

.messages {
    margin: 0.75rem 0 0 0;
}

.messages p {
    margin: 0.2rem 0;
    font-size: 0.85rem;
}

.messages .bad {
    color: var(--warn);
}

button,
select,
input[type="text"] {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text);
    background: var(--background);
    border: 1px solid var(--primary);
    padding: 0.35rem 0.6rem;
}

select {
    max-width: 100%;
    min-width: 0;
}

button {
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background: var(--secondary);
}

:focus-visible {
    outline: 2px solid var(--bt-line);
    outline-offset: 2px;
}

.actions {
    margin: 0.75rem 0 0 0;
}

.field-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin: 0 0 0.75rem 0;
}

.field-row select {
    flex: 0 1 auto;
}

.field-row label {
    min-width: 12ch;
    font-weight: bold;
}

.field-row input[type="range"] {
    accent-color: var(--primary);
    flex: 1 1 18rem;
    max-width: 36rem;
}

/* tables */
.table-wrap {
    overflow-x: auto;
    margin: 0.75rem 0 0 0;
}

table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.85rem;
}

th,
td {
    text-align: left;
    padding: 0.35rem 0.75rem 0.35rem 0;
    border-bottom: 1px solid var(--grid-line);
    white-space: nowrap;
}

th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
}

td.num,
th.num {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

td.wrap {
    white-space: normal;
}

tr.excluded td {
    color: var(--muted);
    text-decoration: line-through;
}

.tag {
    font-size: 0.75rem;
    padding: 0.05rem 0.4rem;
    border: 1px solid var(--secondary);
}

.tag.warn {
    border-color: var(--warn);
    color: var(--warn);
}

/* result blocks */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.card {
    border: 1px solid var(--secondary);
    padding: 0.75rem 1rem;
}

.card .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
}

.card .value {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0.2rem 0;
    font-variant-numeric: tabular-nums;
}

.card .sub {
    font-size: 0.8rem;
    color: var(--muted);
}

.callout {
    border-left: 4px solid var(--primary);
    padding: 0.5rem 1rem;
    margin: 1rem 0;
    background: var(--grid-line);
}

.callout.warn {
    border-left-color: var(--warn);
}

/* charts */
.chart {
    margin: 0.5rem 0 1.5rem 0;
}

.chart svg {
    width: 100%;
    height: auto;
    display: block;
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.25rem;
    font-size: 0.8rem;
    margin: 0 0 0.25rem 0;
}

.legend span::before {
    content: "";
    display: inline-block;
    width: 1.5em;
    height: 0;
    border-top: 3px solid currentColor;
    margin-right: 0.4em;
    vertical-align: middle;
}

.legend .bt { color: var(--bt-line); }
.legend .et { color: var(--et-line); }
.legend .ref { color: var(--ref-line); }
.legend .hist { color: var(--history-line); }
.legend .actual { color: var(--text); }
.legend .ref::before { border-top-style: dashed; }

.chart .axis,
.chart .tick {
    font-family: monospace;
    font-size: 11px;
    fill: var(--muted);
}

.chart .grid { stroke: var(--grid-line); stroke-width: 1; }
.chart .frame { stroke: var(--muted); stroke-width: 1; fill: none; }
.chart .line { fill: none; stroke-linejoin: round; stroke-linecap: round; }
.chart .line.bt { stroke: var(--bt-line); stroke-width: 2.5; }
.chart .line.et { stroke: var(--et-line); stroke-width: 1.5; }
.chart .line.ref { stroke: var(--ref-line); stroke-width: 1.75; stroke-dasharray: 6 4; }
.chart .line.hist { stroke: var(--history-line); stroke-width: 1; }
.chart .line.actual { stroke: var(--text); stroke-width: 1.75; }
.chart .line.alt { stroke: var(--et-line); stroke-width: 2; stroke-dasharray: 2 3; }
.chart .vline { stroke: var(--muted); stroke-dasharray: 3 3; }
.chart .vlabel { font-family: monospace; font-size: 11px; fill: var(--text); }

footer {
    font-size: 0.8rem;
    color: var(--muted);
}

@media (max-width: 768px) {
    .field-row label {
        min-width: 100%;
    }
}

.design-grid {
    display: grid;
    grid-template-columns: max-content minmax(0, 12rem);
    gap: 0.5rem 1rem;
    align-items: center;
    margin: 0.75rem 0;
}

.design-grid label {
    font-weight: bold;
}

.tune { margin: 0.5rem 0; }
.tune summary { cursor: pointer; padding: 0.4rem 0; }

@media (max-width: 768px) {
    main { padding: 0 0.25rem; }
    button,
    select,
    input[type="text"] {
        font-size: 16px;
        min-height: 2.75rem;
        width: 100%;
        box-sizing: border-box;
    }
    .field-row { gap: 0.4rem; }
    .field-row input[type="range"] { width: 100%; min-height: 2.75rem; }
    .design-grid { grid-template-columns: 7.5rem minmax(0, 1fr); }
    .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem; }
    .card { padding: 0.5rem 0.6rem; }
    .card .value { font-size: 1.2rem; }
    .drop-zone { padding: 2rem 1rem; }
    td.wrap { min-width: 9rem; }
    section { margin-bottom: 2rem; }
}