/* Shared hand-drawn system for the writings.
   One stylesheet behind every page here; the marks, colors and type match
   nima.sadri.ai and sadri.ai. Each page supplies its own #wobble filter in a
   defs <svg>, because CSS filter: url(#id) resolves against the current
   document and an external sheet cannot carry the definition. */

:root {
    --ink-900: #0B0E14;
    --ink-800: #161B24;
    --ink-600: #444C5A;
    --ink-500: #5C6675;
    --ink-400: #808A99;
    --ink-300: #AAB2BF;
    --page:    #F5F7FA;
    --card:    #FFFFFF;
    --teal-600: #0E9084;
    --teal-500: #16B0A3;
    --teal-100: #E2FBF6;
    --gold:    #F6C177;

    --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-hand: 'Kalam', 'Bradley Hand', cursive;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    --hand-rule: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='8' viewBox='0 0 1200 8' preserveAspectRatio='none'%3E%3Cpath d='M0 4.7C148 2.9 296 6.1 456 4.3 618 2.5 762 6.2 902 4.6 1042 3.1 1132 5.6 1200 4.1' fill='none' stroke='rgba(11,14,20,0.22)' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    --hand-rule-teal: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='10' viewBox='0 0 1200 10' preserveAspectRatio='none'%3E%3Cpath d='M0 5.4C148 2.4 296 7.4 456 4.6 618 1.8 762 7.6 902 5.2 1042 2.8 1132 6.8 1200 4.2' fill='none' stroke='%2316B0A3' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E");
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    position: relative;
    background-color: var(--page);
    background-image: radial-gradient(circle at 1px 1px, rgba(11,14,20,0.10) 1px, transparent 0);
    background-size: 28px 28px;
    color: var(--ink-800);
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.65;
    letter-spacing: -0.01em;
    min-height: 100vh;
    overflow-x: hidden;
}

/* paper tooth */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    opacity: 0.5;
    pointer-events: none;
    z-index: 999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
    background-size: 220px 220px;
}

.defs { position: absolute; width: 0; height: 0; }

/* ── marginalia ───────────────────────── */

.doodles { position: absolute; inset: 0; pointer-events: none; z-index: 0; }

.doodles svg {
    position: absolute;
    fill: none;
    stroke: var(--ink-800);
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.55;
}

/* two classes, so this outranks the `.doodles svg` base rule */
.doodles .teal { stroke: var(--teal-600); }

.w1  { top: 4%;  left: 3%;    width: 66px; }
.w2  { top: 12%; right: 3%;   width: 78px; }
.w3  { top: 24%; left: 2.5%;  width: 44px; }
.w4  { top: 36%; right: 2.5%; width: 56px; }
.w5  { top: 48%; left: 3%;    width: 60px; }
.w6  { top: 60%; right: 3%;   width: 48px; }
.w7  { top: 72%; left: 2.5%;  width: 54px; }
.w8  { top: 84%; right: 3%;   width: 62px; }
.w9  { top: 93%; left: 3%;    width: 46px; }

/* nothing lines up: every other mark leans the other way */
.doodles svg:nth-child(3n)   { rotate: -8deg; }
.doodles svg:nth-child(3n+1) { rotate: 6deg; }

@media (max-width: 62rem) {
    .doodles { display: none; }
}

/* ── shell ────────────────────────────── */

.container {
    position: relative;
    z-index: 1;
    max-width: 44rem;
    margin: 0 auto;
    padding: 4.5rem 1.5rem 5rem;
}

a { color: inherit; }

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-hand);
    font-weight: 400;
    font-size: 1.15rem;
    color: var(--ink-500);
    text-decoration: none;
    margin-bottom: 3.5rem;
    transform: rotate(-1.2deg);
    transform-origin: left center;
    transition: color 0.25s ease;
}

.back-link:hover { color: var(--teal-600); }
.back-link svg { width: 26px; height: auto; transition: transform 0.25s cubic-bezier(0.34, 1.45, 0.64, 1); }
.back-link:hover svg { transform: translateX(-5px); }

/* ── article header ───────────────────── */

.article-header, .page-header { margin-bottom: 3rem; }

.title {
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
}

/* highlighter swipe, for a .mark span inside a title */
.title .mark { position: relative; display: inline-block; padding: 0 0.06em; }

.title .mark::before {
    content: '';
    position: absolute;
    left: -0.05em;
    right: -0.05em;
    bottom: 0.04em;
    height: 0.3em;
    background: var(--gold);
    border-radius: 0.35em 0.9em 0.4em 0.7em;
    transform: rotate(-1.1deg) scaleX(0);
    transform-origin: left center;
    z-index: -1;
    animation: swipe 0.5s cubic-bezier(0.65, 0, 0.35, 1) 0.5s forwards;
}

@keyframes swipe { to { transform: rotate(-1.1deg) scaleX(1); } }

.subtitle {
    margin-top: 1rem;
    font-family: var(--font-hand);
    font-weight: 400;
    font-size: 1.25rem;
    line-height: 1.4;
    color: var(--ink-600);
    transform: rotate(-0.8deg);
    transform-origin: left center;
}

/* the hairline divider becomes a drawn stroke */
.divider {
    width: 9rem;
    height: 10px;
    margin: 1.6rem 0 0;
    background-image: var(--hand-rule-teal);
    background-repeat: no-repeat;
    background-size: 100% 10px;
}

.asterism {
    display: block;
    margin-top: 1.2rem;
    font-family: var(--font-hand);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--teal-500);
    letter-spacing: 0.3em;
}

/* ── prose ────────────────────────────── */

.content { font-weight: 500; color: var(--ink-600); }

.content p { margin-bottom: 1.25rem; }

.content > p:first-child { margin-top: 0; }

.content h2 {
    margin: 3rem 0 1.2rem;
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--ink-900);
    display: inline-block;
    padding-bottom: 8px;
    background-image: var(--hand-rule-teal);
    background-repeat: no-repeat;
    background-position: bottom left;
    background-size: 100% 8px;
}

.content h2:first-child { margin-top: 0; }

.content h3 {
    margin: 2.2rem 0 0.9rem;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    color: var(--ink-900);
}

.content strong { font-weight: 700; color: var(--ink-900); }

.content em { font-style: normal; font-family: var(--font-hand); font-weight: 400; }

.content a {
    color: var(--teal-600);
    font-weight: 700;
    text-decoration: none;
    border-bottom: 2px solid rgba(22,176,163,0.35);
}

.content a:hover { border-bottom-color: var(--teal-500); }

.content ul, .content ol {
    margin: 1.3rem 0;
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.content li {
    position: relative;
    padding-left: 1.5rem;
    line-height: 1.6;
}

/* hand-drawn tick instead of a bullet */
.content ul > li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.62em;
    width: 13px;
    height: 6px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='13' height='6' viewBox='0 0 13 6'%3E%3Cpath d='M1 4.2C4 2.4 8 2.1 12 3.4' fill='none' stroke='%2316B0A3' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
}

/* the implicit list-item counter, not a custom one: it honours the
   <ol start> and <li value> attributes these posts rely on */
.content ol > li { padding-left: 2rem; }

.content ol > li::before {
    content: counter(list-item);
    position: absolute;
    left: 0;
    top: 0.1em;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--teal-600);
}

.content code {
    font-family: var(--font-mono);
    font-size: 0.82em;
    background: var(--teal-100);
    color: var(--teal-600);
    padding: 0.15em 0.4em;
    border-radius: 5px;
}

.content pre {
    margin: 1.4rem 0 1.8rem;
    padding: 1.3rem 1.5rem;
    background: var(--ink-900);
    border-radius: 12px 16px 10px 14px;
    overflow-x: auto;
    line-height: 1.55;
}

.content pre code {
    background: none;
    color: #E2E7ED;
    padding: 0;
    font-size: 0.78rem;
    display: block;
}

.content blockquote {
    margin: 1.6rem 0;
    padding-left: 1.2rem;
    border-left: 3px dashed var(--teal-500);
    font-family: var(--font-hand);
    font-weight: 400;
    font-size: 1.15rem;
    color: var(--ink-500);
}

.content img { max-width: 100%; height: auto; border-radius: 10px 14px 8px 12px; }

.content figure { margin: 2rem 0; }

.content figcaption {
    margin-top: 0.6rem;
    font-family: var(--font-hand);
    font-weight: 300;
    font-size: 1rem;
    color: var(--ink-400);
}

/* ── notes & callouts ─────────────────── */

.note, .callout {
    position: relative;
    margin: 2rem 0;
    padding: 1.2rem 1.4rem;
    background: var(--card);
    border-radius: 14px 18px 12px 16px;
    font-size: 0.95rem;
    color: var(--ink-600);
}

/* the outline lives on a pseudo-element so the wobble filter
   never touches the text */
.note::before, .callout::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2.2px solid var(--ink-800);
    border-radius: 14px 18px 12px 16px;
    filter: url(#wobble);
}

.note { transform: rotate(-0.5deg); }
.callout { transform: rotate(0.4deg); }

.callout strong, .note strong { color: var(--teal-600); }

/* ── embeds & tables ──────────────────── */

.content figure.terminal-embed {
    width: 100%;
    max-width: 100%;
    position: static;
    transform: none;
}

.content figure.terminal-embed iframe {
    width: 100%;
    display: block;
    border: 2.5px solid var(--ink-800);
    border-radius: 12px 16px 10px 14px;
    background: #0d1117;
    box-shadow: 7px 8px 0 var(--teal-500);
    overflow: hidden;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.9rem;
}

.result-table th, .result-table td {
    padding: 0.7rem 0.9rem;
    text-align: left;
    background-image: var(--hand-rule);
    background-repeat: no-repeat;
    background-position: bottom left;
    background-size: 100% 8px;
}

.result-table th {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-900);
}

.result-table td.win { color: var(--teal-600); font-weight: 700; }
.result-table td.num { font-family: var(--font-mono); font-size: 0.82em; }

/* ── writings index ───────────────────── */

.intro {
    margin-top: 1.4rem;
    font-weight: 500;
    color: var(--ink-600);
    max-width: 34rem;
}

.entries {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.entry { position: relative; }

.entry-link {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    padding: 1.3rem 1.4rem;
    background: var(--card);
    border-radius: 16px 20px 14px 22px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.28s cubic-bezier(0.34, 1.45, 0.64, 1);
}

.entry-link::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2.2px solid var(--ink-800);
    border-radius: 16px 20px 14px 22px;
    filter: url(#wobble);
}

.entry:nth-child(even) .entry-link { transform: rotate(-0.4deg); }
.entry:nth-child(odd)  .entry-link { transform: rotate(0.3deg); }

.entry-link:hover, .entry-link:focus-visible {
    transform: translate(-2px, -4px) rotate(0.5deg);
}

.entry-link:focus-visible { outline: 3px dashed var(--teal-600); outline-offset: 6px; }

.entry-date {
    position: relative;
    flex: none;
    width: 5.5rem;
    padding-top: 0.25rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--ink-400);
}

.entry-content { position: relative; flex: 1; }

.entry-title {
    font-weight: 800;
    font-size: 1.15rem;
    line-height: 1.25;
    letter-spacing: -0.03em;
    color: var(--ink-900);
}

.entry-desc {
    margin-top: 0.25rem;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--ink-600);
}

.entry-tag {
    display: inline-block;
    margin-top: 0.7rem;
    font-family: var(--font-hand);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--teal-600);
    transform: rotate(-1.5deg);
}

.entry-arrow {
    position: relative;
    flex: none;
    width: 30px;
    height: auto;
    align-self: center;
    color: var(--teal-600);
    transition: transform 0.28s cubic-bezier(0.34, 1.45, 0.64, 1);
}

.entry-link:hover .entry-arrow { transform: translateX(6px); }

/* ── footer ───────────────────────────── */

.page-footer {
    margin-top: 5rem;
    padding-top: 1.4rem;
    background-image: var(--hand-rule);
    background-repeat: no-repeat;
    background-position: top left;
    background-size: 100% 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--ink-400);
}

.page-footer a { color: var(--teal-600); text-decoration: none; }

/* ── entrance ─────────────────────────── */

@keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: none; }
}

.article-header, .page-header, .content, .entries {
    opacity: 0;
    animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.article-header, .page-header { animation-delay: 0.05s; }
.content, .entries { animation-delay: 0.25s; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .article-header, .page-header, .content, .entries { opacity: 1; animation: none; }
    .title .mark::before { transform: rotate(-1.1deg); animation: none; }
    .entry-link, .entry-arrow, .back-link svg { transition: none; }
}

@media (max-width: 34rem) {
    body { font-size: 16px; }
    .container { padding: 3rem 1.15rem 3.5rem; }
    .entry-link { flex-wrap: wrap; gap: 0.5rem 1rem; padding: 1.15rem 1.2rem; }
    .entry-date { width: auto; padding-top: 0; order: -1; }
    .entry-arrow { display: none; }
}