/* ---------------------------------------------------------------------------
   Editorial Mono portfolio
   ---------------------------------------------------------------------------
   paper bg, ink, one accent. restraint is the design.
   ------------------------------------------------------------------------- */

:root {
    --bg: #F2EFE8;
    --ink: #0A0A0A;
    --ink-soft: #2A2A2A;
    --muted: #6B6862;
    --rule: #D9D4C7;
    --rule-strong: #B9B2A0;
    --panel: #EAE6DC;
    --accent: #C6F02D;
    --accent-ink: #0A0A0A;
    --code-cyan: #2A6F5A;
    --code-green: #1F7A3A;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--ink);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 17px;
    line-height: 1.55;
    font-feature-settings: 'ss01', 'cv11';
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

::selection {
    background: var(--accent);
    color: var(--accent-ink);
}

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

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

button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

input {
    font: inherit;
    color: inherit;
}

/* ---------- Typography utilities --------------------------------------- */

.display {
    font-family: 'Fraunces', 'Iowan Old Style', Georgia, serif;
    font-weight: 900;
    font-size: clamp(2.6rem, 6.4vw, 5.6rem);
    line-height: 0.98;
    letter-spacing: -0.025em;
    font-variation-settings: 'opsz' 144;
    color: var(--ink);
    max-width: 18ch;
}

.display em {
    font-style: italic;
    font-weight: 900;
    color: var(--ink);
}

.eyebrow {
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-soft);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.eyebrow-num {
    color: var(--ink);
    font-weight: 700;
}

.meta-rule {
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    color: var(--ink-soft);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 14px 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
}

.dot-sep {
    color: var(--rule-strong);
}

.dot-pulse {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 0 rgba(198, 240, 45, 0.6);
    animation: pulse 2s ease-out infinite;
    vertical-align: middle;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(198, 240, 45, 0.55); }
    70% { box-shadow: 0 0 0 10px rgba(198, 240, 45, 0); }
    100% { box-shadow: 0 0 0 0 rgba(198, 240, 45, 0); }
}

/* ---------- Navigation ------------------------------------------------- */

nav {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 5%;
    max-width: 1320px;
    margin: 0 auto;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
}

.logo {
    display: inline-flex;
    align-items: center;
    height: 40px;
    line-height: 1;
    overflow: hidden;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 1.5px solid var(--ink);
    display: block;
}

.logo-fallback {
    display: none;
    font-family: 'Fraunces', serif;
    font-weight: 900;
    font-size: 1.7rem;
    letter-spacing: -0.04em;
    color: var(--ink);
}

.logo:has(.logo-img[src]:not([src=""])) .logo-fallback {
    display: none;
}

.logo .logo-img[style*="display: none"],
.logo .logo-img.is-hidden {
    display: none;
}

.logo.is-fallback .logo-img {
    display: none;
}

.logo.is-fallback .logo-fallback {
    display: block;
}

.nav-cta {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink);
    padding: 10px 16px;
    border: 1px solid var(--ink);
    border-radius: 999px;
    transition: background 0.2s ease, color 0.2s ease;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-cta:hover {
    background: var(--ink);
    color: var(--bg);
}

.nav-cta:hover span {
    transform: translateX(2px);
}

.nav-cta span {
    transition: transform 0.2s ease;
}

/* ---------- Hero ------------------------------------------------------- */

main {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 5%;
}

.hero {
    padding: 88px 0 96px;
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.hero-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}

.status-dot {
    color: var(--ink-soft);
}

.hero h1.display {
    margin-top: 4px;
}

/* ---------- REPL (signature) ------------------------------------------ */

.repl {
    background: var(--panel);
    border: 1px solid var(--rule-strong);
    border-radius: 14px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--ink);
    overflow: hidden;
    box-shadow: 0 1px 0 var(--rule);
    position: relative;
}

.repl::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    box-shadow: 0 30px 80px -40px rgba(10, 10, 10, 0.18);
}

.repl-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    font-size: 0.82rem;
    flex-wrap: wrap;
}

.repl-prompt {
    color: var(--muted);
    user-select: none;
}

.repl-cmd {
    font-weight: 700;
    color: var(--ink);
}

.repl-flag {
    color: var(--ink-soft);
}

.repl-status {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--ink-soft);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.repl-banner {
    padding: 8px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    color: var(--ink-soft);
    font-size: 0.78rem;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.repl-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--rule);
    background: var(--bg);
}

.chip {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    padding: 6px 12px;
    border: 1px solid var(--rule-strong);
    border-radius: 999px;
    color: var(--ink);
    background: transparent;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    min-height: 32px;
}

.chip:hover,
.chip:focus-visible {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--bg);
    outline: none;
}

.repl-body {
    padding: 16px;
    min-height: 180px;
    max-height: 360px;
    overflow-y: auto;
    background: var(--panel);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.repl-body::-webkit-scrollbar {
    width: 8px;
}

.repl-body::-webkit-scrollbar-thumb {
    background: var(--rule-strong);
    border-radius: 4px;
}

.repl-line {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: nowrap;
}

.repl-arrow {
    color: var(--accent-ink);
    user-select: none;
    font-weight: 700;
}

.repl-input-line {
    background: var(--ink);
    color: var(--bg);
    padding: 8px 12px;
    border-radius: 6px;
    margin: 0 0 4px;
}

.repl-input-line .repl-arrow {
    color: var(--accent);
}

#repl-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    caret-color: var(--accent);
    min-width: 0;
}

#repl-input::placeholder {
    color: rgba(242, 239, 232, 0.4);
}

.repl-cursor {
    display: inline-block;
    width: 9px;
    height: 1.05em;
    background: var(--accent);
    vertical-align: -2px;
    animation: blink 1s steps(1) infinite;
}

.repl-user-line {
    color: var(--ink-soft);
    padding: 0;
    background: transparent;
    margin-bottom: 4px;
}

.repl-user-line .repl-arrow {
    color: var(--ink);
}

.repl-event {
    color: var(--ink-soft);
}

.repl-event .dot {
    display: inline-block;
    width: 12px;
    color: var(--ink);
}

.repl-answer {
    color: var(--ink);
    font-family: 'Inter', sans-serif;
    font-size: 0.94rem;
    line-height: 1.55;
    padding: 8px 0 4px;
    border-top: 1px dashed var(--rule-strong);
    margin-top: 6px;
    max-width: 60ch;
}

.repl-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.repl-chips .chip {
    border-color: var(--ink);
    color: var(--ink);
}

.repl-chips .chip:hover,
.repl-chips .chip:focus-visible {
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
}

.repl-footer {
    padding: 8px 16px;
    background: var(--bg);
    border-top: 1px solid var(--rule);
    font-family: 'Inter', sans-serif;
    font-size: 0.76rem;
    color: var(--muted);
    letter-spacing: 0.02em;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    50.01%, 100% { opacity: 0; }
}

/* ---------- Case study ------------------------------------------------- */

.case {
    padding: 80px 0 96px;
    border-top: 1px solid var(--rule);
}

.case-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.case-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--ink);
    border-bottom: 1px solid var(--rule-strong);
    padding-bottom: 2px;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.case-link:hover {
    color: var(--accent-ink);
    border-color: var(--accent);
    background: var(--accent);
}

.case-body {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 56px;
    align-items: start;
}

.case-meta {
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: sticky;
    top: 92px;
}

.meta-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--rule);
}

.meta-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.meta-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--ink);
}

.case-story {
    max-width: 64ch;
}

.case-h2 {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-variation-settings: 'opsz' 72;
    font-size: clamp(1.6rem, 2.4vw, 2.1rem);
    line-height: 1.18;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin-bottom: 28px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-block {
    border-top: 1px solid var(--rule-strong);
    padding-top: 14px;
}

.case-block-h {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-ink);
    background: var(--accent);
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: 12px;
    font-weight: 700;
}

.case-block p {
    font-size: 0.98rem;
    line-height: 1.55;
    color: var(--ink-soft);
}

.case-terminal {
    margin-top: 32px;
    background: var(--ink);
    color: var(--bg);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--ink);
}

.case-terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    color: var(--bg);
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.case-terminal-tag {
    background: var(--accent);
    color: var(--accent-ink);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.case-terminal-body {
    padding: 18px 18px 4px;
    margin: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--bg);
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
}

.t-cyan { color: #7FBFAA; }
.t-green { color: var(--accent); font-weight: 700; }

.case-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.stat {
    padding: 18px 16px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.stat:last-child {
    border-right: none;
}

.stat-num {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-size: 1.7rem;
    letter-spacing: -0.02em;
    color: var(--bg);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(242, 239, 232, 0.6);
    line-height: 1.3;
}

/* ---------- Process timeline ------------------------------------------ */

.process {
    padding: 96px 0 80px;
    border-top: 1px solid var(--rule);
}

.process-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 56px;
}

.process-sub {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--muted);
    letter-spacing: 0.04em;
}

.timeline {
    position: relative;
    padding: 32px 0;
    max-width: 960px;
    margin: 0 auto;
}

.timeline-rail {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--rule);
    transform: translateX(-50%);
}

.timeline-progress {
    position: absolute;
    left: 50%;
    top: 0;
    width: 2px;
    height: 0;
    background: var(--ink);
    transform: translateX(-50%);
    box-shadow: 0 0 12px rgba(10, 10, 10, 0.15);
    transition: height 0.05s linear;
}

.phase {
    position: relative;
    width: 50%;
    padding: 24px 48px 32px;
    opacity: 0.25;
    transition: opacity 0.5s ease, transform 0.5s ease;
    transform: translateY(12px);
}

.phase.visible {
    opacity: 1;
    transform: translateY(0);
}

.phase.left {
    left: 0;
    text-align: right;
    padding-right: 56px;
}

.phase.right {
    left: 50%;
    text-align: left;
    padding-left: 56px;
}

.phase-node {
    position: absolute;
    top: 36px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--bg);
    border: 1.5px solid var(--rule-strong);
    transition: all 0.3s ease;
    z-index: 2;
}

.phase.left .phase-node {
    right: -6px;
}

.phase.right .phase-node {
    left: -6px;
}

.phase.visible .phase-node {
    background: var(--ink);
    border-color: var(--ink);
    box-shadow: 0 0 0 5px var(--bg), 0 0 0 6px var(--ink);
}

.phase-card {
    background: var(--bg);
    border: 1px solid var(--rule);
    border-radius: 10px;
    padding: 22px 22px 22px;
    transition: border-color 0.4s ease, transform 0.4s ease, box-shadow 0.4s ease;
}

.phase.visible .phase-card {
    border-color: var(--ink-soft);
    box-shadow: 0 8px 24px -16px rgba(10, 10, 10, 0.3);
}

.phase-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}

.phase.visible .phase-tag {
    color: var(--accent-ink);
}

.phase-h {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-variation-settings: 'opsz' 36;
    font-size: 1.18rem;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    color: var(--ink);
}

.phase p {
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--ink-soft);
}

/* ---------- Contact ---------------------------------------------------- */

.contact {
    padding: 96px 0 96px;
    border-top: 1px solid var(--rule);
}

.contact-card {
    border: 1px solid var(--ink);
    border-radius: 16px;
    padding: 56px clamp(28px, 5vw, 64px);
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

.contact-card::after {
    content: '';
    position: absolute;
    inset: auto -10% -50% auto;
    width: 50%;
    height: 200%;
    background: var(--accent);
    transform: rotate(-3deg);
    opacity: 0.6;
    z-index: 0;
    pointer-events: none;
}

.contact-card > * {
    position: relative;
    z-index: 1;
}

.contact-h {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-variation-settings: 'opsz' 72;
    font-size: clamp(1.7rem, 3.4vw, 2.6rem);
    line-height: 1.1;
    letter-spacing: -0.015em;
    margin: 16px 0 14px;
    max-width: 22ch;
}

.contact-p {
    font-size: 1.05rem;
    color: var(--ink-soft);
    max-width: 52ch;
    margin-bottom: 28px;
}

.contact-actions {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 22px;
    background: var(--ink);
    color: var(--bg);
    border-radius: 999px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    min-height: 44px;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: var(--accent);
    color: var(--accent-ink);
    outline: none;
}

.btn-primary:hover span {
    transform: translateX(3px);
}

.btn-primary span {
    transition: transform 0.2s ease;
}

.contact-meta {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--muted);
}

.contact-mono-link {
    color: var(--ink);
    border-bottom: 1px solid var(--rule-strong);
    padding-bottom: 1px;
}

.contact-mono-link:hover {
    border-color: var(--ink);
}

/* ---------- Footer ----------------------------------------------------- */

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding: 32px 5%;
    max-width: 1320px;
    margin: 0 auto;
    border-top: 1px solid var(--rule);
    color: var(--muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
}

.social-links {
    display: flex;
    gap: 18px;
}

.social-links a {
    color: var(--muted);
    transition: color 0.2s ease;
    padding: 8px 4px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.social-links a:hover,
.social-links a:focus-visible {
    color: var(--ink);
    outline: none;
}

/* ---------- Responsive ------------------------------------------------- */

@media (max-width: 960px) {
    .case-body {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .case-meta {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 24px;
    }
    .meta-row {
        flex: 1 1 200px;
        border-bottom: none;
        padding-bottom: 0;
    }
    .case-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .case-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat:nth-child(2n) {
        border-right: none;
    }
}

@media (max-width: 720px) {
    body { font-size: 16px; }
    nav { padding: 14px 5%; }
    .logo { font-size: 1.4rem; }
    .hero { padding: 56px 0 64px; gap: 28px; }
    .case, .process, .contact { padding: 56px 0; }

    .timeline-rail,
    .timeline-progress {
        left: 18px;
        transform: none;
    }
    .phase {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding: 18px 0 22px 48px;
    }
    .phase.left .phase-node,
    .phase.right .phase-node {
        left: 12px;
        right: auto;
    }
    .meta-rule { gap: 8px; font-size: 0.78rem; }

    footer {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .repl-presets { gap: 6px; }
    .chip { font-size: 0.72rem; padding: 5px 10px; }
    .case-stats { grid-template-columns: 1fr 1fr; }
    .contact-actions { flex-direction: column; align-items: flex-start; gap: 14px; }
}

/* ---------- Accessibility --------------------------------------------- */

*:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 3px;
    border-radius: 4px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .dot-pulse { animation: none; box-shadow: none; }
    .repl-cursor { animation: none; opacity: 1; }
}