/* Hallmark · genre: modern-minimal · macrostructure: Bento Grid · theme: Cobalt
 * nav: N1b (Cobalt bordered variant, working ⌘K) · footer: Ft2 Inline single line
 * pre-emit critique: P4 H4 E4 S4 R4 V5
 * contrast: pass (40-41, lightness-gap heuristic — not full APCA-verified)
 * nav: N1b · footer: Ft2 · slop: pass (42-45) · honest: pass (46) · chrome: pass (47)
 * tokens: pass (48) · responsive: pass (49) · mobile: pass (34, 49-57)
 * Comparison build — does not touch index.html / styles.css.
 */

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

html, body { overflow-x: clip; }

html {
    scroll-behavior: smooth;
}

body {
    background: var(--color-paper);
    color: var(--color-ink-2);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
}

h1, h2 {
    font-family: var(--font-display);
    color: var(--color-ink);
    overflow-wrap: anywhere;
    min-width: 0;
    line-height: 1.1;
}

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

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

:focus { outline: none; }
:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: var(--radius-control);
}

/* ── Nav ──────────────────────────────────────────────────────── */

.nav {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: color-mix(in oklch, var(--color-paper) 90%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-rule);
}

.nav__inner {
    max-width: 72rem;
    margin: 0 auto;
    padding-inline: clamp(1rem, 4vw, 2.5rem);
    height: 64px;
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav__brand {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--text-md);
    letter-spacing: -0.02em;
    color: var(--color-ink);
    white-space: nowrap;
}

.nav__links {
    display: flex;
    gap: var(--space-lg);
}

.nav__links a {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
    white-space: nowrap;
    border-bottom: 1px solid transparent;
    transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
    padding-block: var(--space-2xs);
}

.nav__links a:hover,
.nav__links a:focus-visible {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.nav__right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav__cmdk {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    height: 36px;
    padding-inline: var(--space-sm);
    border: 1px solid var(--color-rule-2);
    border-radius: var(--radius-control);
    background: var(--color-paper);
    color: var(--color-muted);
    font-size: var(--text-sm);
    font-family: var(--font-body);
    cursor: pointer;
    transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
    white-space: nowrap;
}

.nav__cmdk:hover,
.nav__cmdk:focus-visible {
    border-color: var(--color-accent);
    color: var(--color-ink);
}

.nav__cmdk:active { transform: translateY(1px); }

.nav__cmdk kbd {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    background: var(--color-paper-2);
    border: 1px solid var(--color-rule);
    border-radius: 4px;
    padding: var(--space-3xs) var(--space-2xs);
}

.btn {
    display: inline-flex;
    align-items: center;
    height: 36px;
    padding-inline: var(--space-md);
    border-radius: var(--radius-control);
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out),
                transform var(--dur-instant) var(--ease-out);
}

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

.btn--accent:hover { background: oklch(53% 0.20 256); }
.btn--accent:active { transform: translateY(1px); }
.btn--accent:focus-visible {
    outline: 2px solid var(--color-focus-on-accent);
    outline-offset: 2px;
}

/* ── Hero ─────────────────────────────────────────────────────── */

.hero {
    max-width: 72rem;
    margin: 0 auto;
    padding: var(--space-2xl) clamp(1rem, 4vw, 2.5rem) var(--space-3xl);
    text-align: left;
}

.hero__eyebrow {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero__name {
    font-size: var(--text-display);
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
    text-align: center;
}

.hero__lede {
    max-width: 65ch;
    margin: 0 auto var(--space-lg);
    color: var(--color-ink-2);
    font-size: var(--text-md);
    text-align: center;
}

.hero__links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-lg);
}

.hero__links a {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
    border-bottom: 1px solid var(--color-rule-2);
    white-space: nowrap;
    transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.hero__links a:hover,
.hero__links a:focus-visible {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* ── Bento grid ───────────────────────────────────────────────── */

.bento {
    max-width: 72rem;
    margin: 0 auto;
    padding: 0 clamp(1rem, 4vw, 2.5rem) var(--space-3xl);
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-flow: dense;
    gap: var(--space-lg);
}

.cell {
    grid-column: span 1;
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-card);
    padding: var(--space-lg);
    background: var(--color-paper);
    transition: border-color var(--dur-fast) var(--ease-out);
    scroll-margin-top: 80px;
    min-width: 0;
}

.cell:hover,
.cell:focus-within {
    border-color: var(--color-accent);
}

.span-2x1 { grid-column: span 2; }
.span-1x2 { grid-row: span 2; }
.span-2x2 { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; }

.cell--code {
    border: none;
    padding: 0;
    background: transparent;
}
.cell--code:hover, .cell--code:focus-within { border-color: transparent; }

.cell__head {
    font-size: var(--text-md);
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-sm);
}

.cell__tag {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-muted);
    margin-bottom: var(--space-xs);
}

.cell__strong { font-weight: 500; color: var(--color-ink); margin-top: var(--space-xs); }
.cell__muted { color: var(--color-muted); font-size: var(--text-sm); }
.cell__tech {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    color: var(--color-muted);
    margin-top: var(--space-sm);
}

.cell__stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-md);
}

.cell__stats .stat {
    display: block;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-accent);
}

/* ── Code card (hero feature tile) ───────────────────────────── */

.code-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--color-graphite);
    border-radius: var(--radius-card);
    padding: var(--space-lg);
    color: oklch(92% 0.01 250);
    box-shadow: 0 1px 2px oklch(24% 0.02 258 / 0.15);
}

.code-card__label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: oklch(70% 0.02 250);
    border-bottom: 1px solid var(--color-graphite-2);
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
}

.code-card__body {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    white-space: pre-wrap;
    word-break: break-word;
}

.tok-method { color: var(--color-accent); font-weight: 600; }
.tok-key { color: oklch(78% 0.10 256); }

.caret {
    display: inline-block;
    animation: blink 1s steps(2) infinite;
}

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

.code-card__response {
    margin-top: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

.code-card__response pre {
    overflow-x: auto;
    margin-top: var(--space-sm);
}

.status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    font-size: var(--text-xs);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: var(--space-3xs) var(--space-xs);
    border: 1px solid var(--color-accent);
    border-radius: 4px;
}

.status--ok { color: var(--color-accent); }

/* ── Skills tags ──────────────────────────────────────────────── */

.tag-group { margin-bottom: var(--space-md); }
.tag-group:last-child { margin-bottom: 0; }

.tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-2xs);
}

.tag {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    padding: var(--space-3xs) var(--space-xs);
    border: 1px solid var(--color-rule);
    border-radius: 4px;
    color: var(--color-ink-2);
}

/* ── Chat (reused #chatBox / #chatInput / #sendButton from chat.js) */

.chat-box {
    flex: 1;
    min-height: 8rem;
    max-height: 16rem;
    overflow-y: auto;
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-control);
    padding: var(--space-md);
    margin: var(--space-md) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    background: var(--color-paper-2);
}

.message {
    max-width: 85%;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-control);
    font-size: var(--text-sm);
}

.bot-message { background: var(--color-paper); border: 1px solid var(--color-rule); align-self: flex-start; }
.user-message { background: var(--color-accent); color: var(--color-accent-ink); align-self: flex-end; }
.message p { margin: 0; line-height: 1.5; }
.loading { color: var(--color-muted); }

.chat-input-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

#chatInput {
    flex: 1;
    height: 44px;
    padding-inline: var(--space-md);
    border: 1px solid var(--color-rule-2);
    outline: 2px solid transparent;
    outline-offset: 1px;
    border-radius: var(--radius-control);
    background: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: var(--text-sm);
}

#chatInput:hover { background: var(--color-paper-2); }

#chatInput:focus-visible {
    outline: 2px solid var(--color-focus);
}

#chatInput::placeholder { color: var(--color-muted); }

#sendButton {
    height: 44px;
    padding-inline: var(--space-md);
    border: none;
    border-radius: var(--radius-control);
    background: var(--color-accent);
    color: var(--color-accent-ink);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--text-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--dur-fast) var(--ease-out);
}

#sendButton:hover { background: oklch(53% 0.20 256); }
#sendButton:active { transform: translateY(1px); }
#sendButton:disabled { opacity: 0.5; cursor: not-allowed; }
#sendButton:focus-visible {
    outline: 2px solid var(--color-focus-on-accent);
    outline-offset: 2px;
}

/* ── Contact ──────────────────────────────────────────────────── */

.contact-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-lg);
    margin-top: var(--space-md);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    font-weight: 500;
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-rule-2);
    white-space: nowrap;
    padding-bottom: 2px;
    transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.contact-link span {
    transition: transform var(--dur-fast) var(--ease-out);
}

.contact-link:hover,
.contact-link:focus-visible {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.contact-link:hover span,
.contact-link:focus-visible span {
    transform: translateX(3px);
}

/* ── Footer (Ft2) ─────────────────────────────────────────────── */

.foot-line {
    border-top: 1px solid var(--color-rule);
    padding: var(--space-lg) clamp(1rem, 4vw, 2.5rem);
    text-align: center;
}

.foot-line p {
    font-size: var(--text-xs);
    color: var(--color-muted);
}

/* ── Command palette ──────────────────────────────────────────── */

.cmdk {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: grid;
    place-items: center;
    padding: var(--space-lg);
}

.cmdk[hidden] { display: none; }

.cmdk__backdrop {
    position: absolute;
    inset: 0;
    background: oklch(24% 0.02 258 / 0.45);
}

.cmdk__panel {
    position: relative;
    width: min(34rem, 100%);
    max-height: min(70vh, 28rem);
    background: var(--color-paper);
    border: 1px solid var(--color-rule-2);
    border-radius: var(--radius-card);
    box-shadow: 0 8px 28px oklch(24% 0.02 258 / 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.cmdk__input-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-rule);
}

.cmdk__prompt { color: var(--color-accent); font-family: var(--font-mono); }

.cmdk__input {
    flex: 1;
    border: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    background: transparent;
    color: var(--color-ink);
}

.cmdk__input-row kbd {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    border: 1px solid var(--color-rule);
    border-radius: 4px;
    padding: var(--space-3xs) var(--space-2xs);
}

.cmdk__list {
    list-style: none;
    overflow-y: auto;
    padding: var(--space-xs);
}

.cmdk__item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm);
    border-radius: var(--radius-control);
    font-size: var(--text-sm);
    cursor: pointer;
    color: var(--color-ink-2);
}

.cmdk__item .cmdk__hint {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.cmdk__item[aria-selected="true"] {
    background: var(--color-paper-2);
    color: var(--color-ink);
}

.cmdk__item:hover {
    background: var(--color-paper-2);
}

/* ── Reveal (one-shot, stagger by index) ─────────────────────── */

.reveal {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}

.reveal.is-in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .caret { animation: none; opacity: 1; }
    .contact-link span,
    .btn--accent, .nav__cmdk, #sendButton {
        transition: none;
    }
    .contact-link:hover span,
    .contact-link:focus-visible span,
    .btn--accent:active, .nav__cmdk:active, #sendButton:active {
        transform: none;
    }
}

/* ── Responsive ───────────────────────────────────────────────── */

@media (max-width: 60rem) {
    .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .span-2x1, .span-2x2 { grid-column: span 2; }
    .nav__links { display: none; }
}

@media (max-width: 40rem) {
    .bento { grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
    .span-2x1, .span-2x2, .span-1x2 { grid-column: span 1; grid-row: auto; }
    .code-card { margin: calc(var(--space-lg) * -1) calc(var(--space-lg) * -1) 0; }
    .hero { padding-top: var(--space-2xl); }
    .nav__cmdk span { display: none; }
    .contact-row { flex-direction: column; gap: var(--space-md); }
}