/* Design direction v2: "case file" — a dark, considered canvas with one
   recurring structural signature: a brass ledger index on sequential
   content (Work/Blog rows), echoing casework/lab-notebook numbering
   from both security and research work. One bold color, spent deliberately
   on headline rules, index numbers, and the primary action — not scattered.
   See PLAN.md step 8; v1 (light/minimal) is kept on branch
   design-v1-minimal-paper as a recoverable fallback. */

:root {
    --canvas: #17151a;
    --paper: #f3f0e6;
    --brass: #d9a653;
    --muted: #8c8578;
    --line: #322d2a;

    --font-display: "Newsreader", Georgia, serif;
    --font-body: "IBM Plex Sans", -apple-system, sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, monospace;

    --measure: 42rem;
    --gutter: clamp(1.25rem, 4vw, 3rem);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--canvas);
    color: var(--paper);
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    color: var(--brass);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--brass);
    outline-offset: 3px;
}

h1,
h2,
h3 {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.05;
    margin: 0 0 0.4em;
}

h1 {
    font-size: clamp(2.75rem, 7vw, 5.25rem);
    max-width: 16ch;
}

p {
    margin: 0 0 1.25em;
    max-width: var(--measure);
}

/* Header */

header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.75rem var(--gutter);
}

.wordmark {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 500;
}

header nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

header nav a {
    color: var(--muted);
    transition: color 0.15s ease;
}

header nav a:hover {
    color: var(--brass);
}

/* Main content */

main {
    padding: clamp(2rem, 5vw, 3.5rem) var(--gutter) 5rem;
}

.page {
    max-width: 72rem;
}

.page h1 {
    border-bottom: 3px solid var(--brass);
    padding-bottom: 0.35em;
    display: inline-block;
}

/* The boundary — two different woven-texture slices (from the site
   owner's own shirt/tie, top and bottom of the same photo) bookending
   the page in place of a flat rule. Using two distinct strips, not one
   repeated, gives the sense of a single larger image running behind the
   whole page — only glimpsed at its very top and bottom edges, with
   everything in between covered by the page content. Deliberately
   abstract: it reads as texture, not as imagery. */

.boundary {
    height: 0.85rem;
    background-size: cover;
    background-position: center;
}

.boundary--top {
    background-image: url("/static/img/boundary-texture-top.png");
}

.boundary--bottom {
    background-image: url("/static/img/boundary-texture-bottom.png");
}

.back-link {
    display: inline-block;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 2rem;
}

.back-link::before {
    content: "← ";
}

.back-link:hover {
    color: var(--brass);
}

.lede {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--muted);
    margin-top: 1rem;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 2rem;
    margin-top: 1.5rem;
}

/* Row lists (Work, Blog) — the ledger */

.row-list {
    list-style: none;
    max-width: 56rem;
    margin: 2.5rem 0 0;
    padding: 0;
    border-top: 1px solid var(--line);
}

.row-list li {
    border-bottom: 1px solid var(--line);
}

.row-link {
    display: grid;
    grid-template-columns: 3rem 1fr auto;
    align-items: baseline;
    gap: 0.25rem 1.5rem;
    padding: 1.5rem 0;
    color: var(--paper);
}

.row-index {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--brass);
}

.row-link:hover .row-title {
    color: var(--brass);
}

.row-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
}

.row-detail {
    grid-column: 2 / -1;
    color: var(--muted);
    font-size: 0.95rem;
}

/* Forms (Contact) */

form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: var(--measure);
    margin-top: 2rem;
}

form label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--muted);
}

form input,
form textarea {
    font: inherit;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--paper);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 0;
}

form input:focus,
form textarea:focus {
    border-bottom-color: var(--brass);
}

form textarea {
    min-height: 8rem;
    resize: vertical;
}

form button {
    align-self: flex-start;
    font: inherit;
    font-weight: 500;
    color: var(--canvas);
    background: var(--brass);
    border: none;
    padding: 0.75rem 1.75rem;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

form button:hover {
    opacity: 0.85;
}

/* Footer */

footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.5rem var(--gutter);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

footer p {
    margin: 0;
}

footer nav {
    display: flex;
    gap: 1.25rem;
}

footer nav a:hover {
    color: var(--brass);
}

@media (max-width: 30rem) {
    .row-link {
        grid-template-columns: 2.5rem 1fr;
    }

    .row-detail {
        grid-column: 1 / -1;
        padding-left: 2.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}