/* --- Theme: dark instrumentation console --- */
:root {
    --bg: #0a0c0a;
    --surface: #121513;
    --ink: #e7eae4;
    --muted: #7c8579;
    --phosphor: #4ce0b3;
    --amber: #ffb454;
    --rule: #232823;

    --font-sans: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;

    --measure: 640px;
    --fast: 0.15s ease;
}

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

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
    }
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    position: relative;
}

/* Faint scanline + grid texture — a CRT/instrumentation cue, kept subtle */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        repeating-linear-gradient(
            to bottom,
            rgba(76, 224, 179, 0.025) 0px,
            rgba(76, 224, 179, 0.025) 1px,
            transparent 1px,
            transparent 3px
        ),
        linear-gradient(rgba(76, 224, 179, 0.035) 1px, transparent 1px),
        linear-gradient(
            90deg,
            rgba(76, 224, 179, 0.035) 1px,
            transparent 1px
        );
    background-size:
        100% 3px,
        48px 48px,
        48px 48px;
}

a {
    color: var(--phosphor);
    text-decoration-color: rgba(76, 224, 179, 0.35);
}

a:hover {
    text-decoration-color: var(--phosphor);
}

a:focus-visible,
button:focus-visible,
span[tabindex]:focus-visible {
    outline: 2px solid var(--phosphor);
    outline-offset: 2px;
}

/* --- Scroll progress (persistent signal-trace, extends the ruler motif) --- */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--rule);
    z-index: 50;
}

.scroll-progress span {
    display: block;
    height: 100%;
    width: 100%;
    background: var(--phosphor);
    transform: scaleX(0);
    transform-origin: left;
}

/* --- Layout --- */

.page {
    position: relative;
    z-index: 1;
    max-width: 780px;
    margin: 0 auto;
    padding: 4.5rem 1.75rem 5rem;
}

.block {
    margin-bottom: 4rem;
    max-width: var(--measure);
}

.block h2 {
    font-family: var(--font-mono);
    font-size: 0.98rem;
    font-weight: 500;
    text-transform: lowercase;
    color: var(--ink);
    margin-bottom: 1.5rem;
}

.block h2::before {
    content: "// ";
    color: var(--phosphor);
}

/* --- Masthead --- */

.masthead {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
}

.masthead-text h1 {
    font-family: var(--font-mono);
    font-size: clamp(1.9rem, 4vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.1;
}

.role {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--phosphor);
    margin-top: 0.5rem;
}

.cursor {
    display: inline-block;
    width: 0.55em;
    height: 1em;
    background: var(--phosphor);
    margin-left: 0.15em;
    transform: translateY(0.15em);
    animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
    0%,
    49% {
        opacity: 1;
    }
    50%,
    100% {
        opacity: 0;
    }
}

.tagline {
    font-size: 0.95rem;
    color: var(--muted);
    margin-top: 0.9rem;
    max-width: 46ch;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.1rem;
    margin-top: 1.4rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.contact-links a {
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 1px;
    transition: border-color var(--fast);
}

.contact-links a:hover {
    border-color: var(--phosphor);
    color: var(--phosphor);
}

.masthead-photo {
    flex-shrink: 0;
    width: 148px;
    height: 148px;
    background-size: cover;
    background-position: center;
    border: 2px solid var(--phosphor);
}

/* --- Ruler divider (single load-in motion) --- */

.ruler {
    margin: 2.5rem 0 3.5rem;
    height: 1px;
    background: var(--rule);
    position: relative;
    overflow: hidden;
}

.ruler span {
    position: absolute;
    inset: 0;
    background: var(--phosphor);
    transform: scaleX(0);
    transform-origin: left;
    animation: sweep 0.9s 0.15s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes sweep {
    to {
        transform: scaleX(1);
    }
}

/* --- About --- */

.about-body p {
    color: var(--ink);
    margin-bottom: 1rem;
}

.about-body p:last-child {
    margin-bottom: 0;
}

/* --- Stacked entries (experience / projects / education) --- */

.stack {
    display: flex;
    flex-direction: column;
}

.entry {
    padding: 1.6rem 0 1.6rem 1rem;
    border-top: 1px solid var(--rule);
    border-left: 2px solid transparent;
    transition: border-left-color var(--fast);
}

.stack .entry:first-child {
    border-top: none;
}

.entry:hover {
    border-left-color: var(--phosphor);
}

.entry-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

.entry-title {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--ink);
}

.entry-date {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--muted);
    white-space: nowrap;
}

.entry-subtitle {
    font-size: 0.92rem;
    color: var(--muted);
    margin-top: 0.2rem;
}

.entry-body {
    margin-top: 0.85rem;
}

.entry-body ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.entry-body li {
    position: relative;
    padding-left: 1.1rem;
    color: var(--ink);
}

.entry-body li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 5px;
    height: 5px;
    background: var(--phosphor);
}

/* --- Projects --- */

.entry-metric {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.92rem;
    color: var(--amber);
    white-space: nowrap;
}

.entry-tags {
    margin-top: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.entry-tags span {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--muted);
    border: 1px solid var(--rule);
    padding: 0.2rem 0.55rem;
    transition:
        border-color var(--fast),
        color var(--fast);
}

.entry:hover .entry-tags span {
    border-color: var(--rule);
}

.entry-tags span:hover {
    border-color: var(--phosphor);
    color: var(--phosphor);
    animation: flicker 0.3s steps(2, end);
}

/* A CRT pixel waking up, rather than a smooth fade */
@keyframes flicker {
    0% {
        opacity: 0.35;
    }
    30% {
        opacity: 1;
    }
    45% {
        opacity: 0.5;
    }
    65% {
        opacity: 1;
    }
    100% {
        opacity: 1;
    }
}

.entry-link {
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.entry-image {
    margin-top: 1rem;
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.entry-image img {
    max-width: 100%;
    max-height: 320px;
    border: 1px solid var(--rule);
    display: block;
    /* Even, light dimming so a white-background screenshot doesn't blaze
       against the dark page — no vignette, just a flat filter. */
    filter: brightness(0.9) saturate(0.9);
}

/* Scope-bezel corner ticks, echoing the instrumentation theme */
.entry-image::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    --tick: 14px;
    background:
        linear-gradient(var(--phosphor), var(--phosphor)) top left / var(
                --tick
            )
            2px no-repeat,
        linear-gradient(var(--phosphor), var(--phosphor)) top left / 2px var(
                --tick
            )
            no-repeat,
        linear-gradient(var(--phosphor), var(--phosphor)) bottom right /
            var(--tick) 2px no-repeat,
        linear-gradient(var(--phosphor), var(--phosphor)) bottom right / 2px
            var(--tick) no-repeat;
    opacity: 0.7;
}

/* --- Skills --- */

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.7rem;
}

.skills-list span {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.35rem 0.7rem;
    background: var(--surface);
    border: 1px solid var(--rule);
    color: var(--ink);
}

/* --- Footer --- */

.site-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--rule);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--muted);
}

/* --- Responsive --- */

@media (max-width: 640px) {
    .page {
        padding: 3rem 1.25rem 3.5rem;
    }

    .masthead {
        flex-direction: column-reverse;
    }

    .masthead-photo {
        width: 108px;
        height: 108px;
    }

    .entry-header {
        flex-direction: column;
        gap: 0.3rem;
    }
}