/* ---------- tokens ---------- */
:root
{
    --bg: #0d1117;
    --surface: #161b22;
    --text: #e6edf3;
    --muted: #8b949e;
    --accent: #4ade80;
    --border: #30363d;

    --mono: "JetBrains Mono", ui-monospace, "Courier New", monospace;
    --sans: "Inter", system-ui, sans-serif;
}

/* ---------- reset ---------- */
*,
*::before,
*::after
{
    box-sizing: border-box;
}

body,
h1,
h2,
h3,
p,
ul
{
    margin: 0;
    padding: 0;
}

ul
{
    list-style: none;
}

img
{
    max-width: 100%;
    display: block;
}

/* ---------- base ---------- */
body
{
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 1rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a
{
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

a:hover
{
    border-bottom-color: var(--accent);
}

:focus-visible
{
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* ---------- layout ---------- */
.container
{
    max-width: 780px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
}

.section
{
    margin-bottom: 5rem;
}

/* ---------- the $ label ---------- */
.prompt
{
    font-family: var(--mono);
    font-size: 0.875rem;
    color: var(--accent);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

/* ---------- hero ---------- */
.hero h1
{
    font-family: var(--mono);
    font-size: clamp(2.25rem, 8vw, 3.25rem);
    font-weight: 700;
    line-height: 1.1;
}

.caret
{
    display: inline-block;
    width: 0.6ch;
    height: 1em;
    margin-left: 0.15em;
    background: var(--accent);
    vertical-align: -0.1em;
    animation: blink 1.1s step-end infinite;
}

@keyframes blink
{
    50%
    {
        opacity: 0;
    }
}

.tagline
{
    font-family: var(--mono);
    color: var(--muted);
    margin-top: 0.75rem;
}

.intro
{
    margin-top: 1.5rem;
    max-width: 60ch;
    color: var(--text);
}

/* ---------- badges ---------- */
.badges
{
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.badge
{
    font-family: var(--mono);
    font-size: 0.8125rem;
    color: var(--muted);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.3rem 0.7rem;
}

/* ---------- project card ---------- */
.card
{
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.75rem;
}

.card-image
{
    width: 100%;
    border-radius: 6px;
    border: 1px solid var(--border);
    margin-bottom: 1.75rem;
}

.card-title
{
    font-family: var(--mono);
    font-size: 1.375rem;
    line-height: 1.3;
    transition: color 0.15s ease;
}

.card-summary
{
    color: var(--muted);
    margin-top: 0.75rem;
}

.card-label
{
    font-family: var(--mono);
    font-size: 0.8125rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.card-label:first-child
{
    margin-top: 0;
}

.bullets li
{
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--muted);
}

.bullets li::before
{
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.bullets strong
{
    color: var(--text);
    font-weight: 600;
}

.card .badges
{
    margin-top: 2rem;
}

/* ---------- collapsible project ---------- */
.project-head
{
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
    cursor: pointer;
    list-style: none;
    /* hides the default triangle in Firefox */
}

.project-head::-webkit-details-marker
{
    display: none;
    /* hides it in Safari and older Chrome */
}

.project-head:hover .card-title
{
    color: var(--accent);
}

.chevron
{
    font-family: var(--mono);
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 0.4rem;
    transition: transform 0.2s ease;
}

.project[open] .chevron
{
    transform: rotate(180deg);
}

.project-body
{
    padding-top: 1.75rem;
    border-top: 1px solid var(--border);
    overflow: hidden;
}

/* ---------- buttons ---------- */
.card-links
{
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.75rem;
}

.button
{
    font-family: var(--mono);
    font-size: 0.875rem;
    color: var(--bg);
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 6px;
    padding: 0.5rem 1rem;
}

.button:hover
{
    opacity: 0.85;
    border-bottom-color: var(--accent);
}

.button-ghost
{
    color: var(--accent);
    background: transparent;
}

.button-ghost:hover
{
    background: rgba(74, 222, 128, 0.1);
    opacity: 1;
}

/* ---------- contact links ---------- */
.links li
{
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
}

.link-key
{
    font-family: var(--mono);
    font-size: 0.8125rem;
    color: var(--muted);
    min-width: 6rem;
}

.copy
{
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--muted);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1rem 0.5rem;
    cursor: pointer;
}

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

/* ---------- footer ---------- */
.footer
{
    font-family: var(--mono);
    font-size: 0.8125rem;
    color: var(--muted);
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

/* ---------- motion preference ---------- */
@media (prefers-reduced-motion: reduce)
{
    .caret
    {
        animation: none;
    }

    .chevron
    {
        transition: none;
    }
}