/* ==========================================================================
   fragiadakis.com — site styles
   ========================================================================== */

/* Self-hosted fonts (no request to Google, so no visitor IPs leave the site).
   Both are variable fonts, latin subset, SIL Open Font License. The files are
   cached for a year: to update one, give it a new filename. */
/* Each family is split into a latin and a greek subset via unicode-range, so
   a browser only downloads the greek file when a page contains Greek text. */
@font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url("../fonts/inter-latin.woff2") format("woff2");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url("../fonts/inter-greek.woff2") format("woff2");
    unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
    font-family: "JetBrains Mono";
    font-style: normal;
    font-weight: 100 800;
    font-display: swap;
    src: url("../fonts/jetbrains-mono-latin.woff2") format("woff2");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
    font-family: "JetBrains Mono";
    font-style: normal;
    font-weight: 100 800;
    font-display: swap;
    src: url("../fonts/jetbrains-mono-greek.woff2") format("woff2");
    unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}

:root {
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --radius: 14px;
    --radius-sm: 8px;
    --maxw: 1140px;
    --gutter: clamp(16px, 4vw, 32px);
    --ease: cubic-bezier(.2, .7, .2, 1);
}

/* Dark (default) */
:root,
[data-theme="dark"] {
    --bg: #0b0f17;
    --bg-alt: #0f1521;
    --surface: #131a28;
    --surface-2: #19223390;
    --border: #232d40;
    --text: #e6ebf4;
    --muted: #93a0b8;
    --accent: #7c8cff;      /* PHP-ish indigo */
    --accent-2: #3ee6c4;    /* terminal teal */
    --accent-ink: #0b0f17;
    --shadow: 0 10px 30px -12px rgb(0 0 0 / .6);

    --t-kw: #c792ea;
    --t-str: #c3e88d;
    --t-var: #f07178;
    --t-num: #f78c6c;
    --t-fn: #82aaff;
    --t-cls: #ffcb6b;
    --t-ns: #89ddff;
    color-scheme: dark;
}

[data-theme="light"] {
    --bg: #f7f8fb;
    --bg-alt: #eef1f7;
    --surface: #ffffff;
    --surface-2: #ffffffcc;
    --border: #dde3ee;
    --text: #141a26;
    --muted: #56627a;
    --accent: #4f5bd5;
    --accent-2: #0f9f86;
    --accent-ink: #ffffff;
    --shadow: 0 10px 30px -14px rgb(20 30 60 / .25);

    --t-kw: #8e3fbf;
    --t-str: #3f7d1b;
    --t-var: #c2334a;
    --t-num: #c05621;
    --t-fn: #2d5bd0;
    --t-cls: #a36a00;
    --t-ns: #0b7a9a;
    color-scheme: light;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }
h4 { font-size: 1rem; font-weight: 700; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.container.narrow { max-width: 780px; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--muted); }
.icon { width: 20px; height: 20px; flex: none; }
.icon-sm { width: 16px; height: 16px; vertical-align: -3px; }

.skip-link {
    position: absolute; left: -999px; top: 8px; z-index: 100;
    background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: var(--radius-sm);
}
.skip-link:focus { left: 8px; }

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

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: saturate(160%) blur(12px);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand-mark {
    display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px;
    font-family: var(--font-mono); font-size: .85rem; font-weight: 700;
    color: var(--accent-ink);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.brand-text { font-family: var(--font-mono); font-size: .95rem; }
.prompt { color: var(--accent-2); }
.caret { animation: blink 1.1s steps(1) infinite; color: var(--accent); }

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
    color: var(--muted); font-size: .92rem; font-weight: 500;
    padding: 8px 12px; border-radius: var(--radius-sm);
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); background: var(--surface); text-decoration: none; }
.site-nav .nav-cta { color: var(--text); border: 1px solid var(--border); margin-left: 6px; }

.site-nav .lang-switch {
    margin-left: 6px; padding: 8px 10px; font-size: .8rem; font-weight: 700;
    color: var(--accent-2); border: 1px solid var(--border);
}
.site-nav .lang-switch:hover { color: var(--text); border-color: var(--accent-2); }

.theme-toggle, .nav-toggle {
    display: grid; place-items: center; width: 38px; height: 38px; margin-left: 6px;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: transparent; color: var(--text); cursor: pointer;
}
.theme-toggle:hover, .nav-toggle:hover { background: var(--surface); }
.nav-toggle { display: none; }
[data-theme="dark"] .when-light, [data-theme="light"] .when-dark { display: none; }

/* Greek-language hint bar (under the header, English pages only) */
.lang-hint {
    background: color-mix(in srgb, var(--accent-2) 10%, var(--bg-alt));
    border-bottom: 1px solid color-mix(in srgb, var(--accent-2) 30%, var(--border));
}
.lang-hint[hidden] { display: none; }
.lang-hint-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 10px; padding-bottom: 10px; }
.lang-hint p { margin: 0; font-size: .92rem; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; }
.lang-hint-lead { color: var(--muted); }
.lang-hint a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--accent-2); }
.lang-hint-close {
    display: grid; place-items: center; width: 32px; height: 32px; flex: none;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: transparent; color: var(--muted); cursor: pointer;
}
.lang-hint-close:hover { color: var(--text); border-color: var(--accent-2); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 20px; border-radius: 10px; font-weight: 600; font-size: .95rem;
    border: 1px solid transparent; transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary {
    color: var(--accent-ink);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 8px 24px -10px var(--accent);
}
.btn-ghost { color: var(--text); border-color: var(--border); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); }

.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: clamp(48px, 9vw, 110px) 0 56px;
    isolation: isolate;
}
.hero::before {
    content: ""; position: absolute; inset: 0; z-index: -1;
    background:
        radial-gradient(600px 300px at 15% 10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
        radial-gradient(500px 280px at 90% 30%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 70%);
}
.hero::after {
    content: ""; position: absolute; inset: 0; z-index: -1; opacity: .5;
    background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }

.eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: .82rem; color: var(--muted);
    padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-2) 25%, transparent); }
.hero h1 { margin-top: 18px; }
.grad {
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { font-size: 1.15rem; max-width: 60ch; }
.meta { font-size: .85rem; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-actions.center { justify-content: center; }

/* Terminal */
.terminal {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); overflow: hidden; min-width: 0;
}
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 12px 14px; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.terminal-bar span { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.terminal-bar span:nth-child(2) { background: #febc2e; }
.terminal-bar span:nth-child(3) { background: #28c840; }
.terminal-bar em { margin-left: auto; font-style: normal; font-size: .78rem; color: var(--muted); }
.terminal-body { margin: 0; padding: 18px 20px; font-size: .82rem; line-height: 1.7; overflow-x: auto; color: var(--text); }
.t-kw { color: var(--t-kw); } .t-str { color: var(--t-str); } .t-var { color: var(--t-var); }
.t-num { color: var(--t-num); } .t-fn { color: var(--t-fn); } .t-cls { color: var(--t-cls); } .t-ns { color: var(--t-ns); }
.cursor { color: var(--accent-2); animation: blink 1.1s steps(1) infinite; }

/* Stats */
.stats {
    list-style: none; padding: 0; margin: 56px 0 0;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
    background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.stats li { background: var(--surface); padding: 22px 20px; }
.stats strong { display: block; font-family: var(--font-mono); font-size: 1.9rem; line-height: 1.1; color: var(--text); }
.stats span { font-size: .88rem; color: var(--muted); }

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 9vw, 110px) 0; }
.section-tight { padding-top: 24px; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { margin-bottom: 40px; }
.section-head p.muted { margin: 0; }
.section-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.kicker { color: var(--accent-2); font-size: .82rem; letter-spacing: .04em; margin-bottom: 10px; text-transform: lowercase; }

.two-col { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; }
.prose p { color: var(--text); }
.inline-list { list-style: none; padding: 0; margin: 20px 0 0; display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: .88rem; }
.inline-list li { display: flex; align-items: center; gap: 6px; }

.card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px;
}

/* Now */
.now-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.now-intro {
    grid-column: 1 / -1; font-size: 1.08rem;
    border-left: 3px solid var(--accent);
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 10%, var(--surface)), var(--surface));
}
.now-intro p { max-width: 80ch; }
.feature h3 { margin-top: 14px; }
.feature p { font-size: .95rem; margin: 0; }
.feature-icon {
    display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 10px;
    color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent-2) 25%, transparent);
}

/* Stack */
.stack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stack-card h3 { font-size: .9rem; color: var(--accent-2); font-weight: 500; }
/* A lone card on the last row stretches across instead of sitting orphaned. */
.stack-card:last-child:nth-child(3n + 1) { grid-column: 1 / -1; }

.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
    font-family: var(--font-mono); font-size: .8rem;
    padding: 5px 10px; border-radius: 6px;
    background: var(--bg-alt); border: 1px solid var(--border); color: var(--text);
}
.chips-sm li { font-size: .72rem; padding: 3px 8px; }

/* Timeline */
.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline::before {
    content: ""; position: absolute; left: 150px; top: 8px; bottom: 8px; width: 2px;
    background: linear-gradient(var(--accent), var(--accent-2), transparent);
}
.timeline-item { display: grid; grid-template-columns: 150px 1fr; gap: 36px; margin-bottom: 20px; position: relative; }
.timeline-item::before {
    content: ""; position: absolute; left: 144px; top: 26px; width: 14px; height: 14px; border-radius: 50%;
    background: var(--bg-alt); border: 3px solid var(--accent);
}
.timeline-when { padding-top: 22px; font-size: .82rem; color: var(--muted); text-align: right; padding-right: 8px; }
.timeline-body h3 { margin-bottom: 4px; }
.timeline-body .at { color: var(--accent); font-weight: 600; }
.timeline-body p:not(.meta) { font-size: .96rem; }
.timeline-body .chips { margin-top: 4px; }

.edu { margin-top: 56px; }
.edu > h3 { display: flex; align-items: center; gap: 8px; color: var(--accent-2); font-weight: 500; font-size: .95rem; }
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.edu-grid p { margin: 0; font-size: .92rem; }

/* Hobbies */
.hobby-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
/* 2 or 4 cards: 2 columns, so none sits alone on the last row (hobby_grid_class()). */
.hobby-grid.hobby-grid-2 { grid-template-columns: repeat(2, 1fr); }
.hobby-card { padding: 0; overflow: hidden; color: var(--text); display: flex; flex-direction: column; transition: transform .25s var(--ease), border-color .25s; }
.hobby-card:hover { text-decoration: none; transform: translateY(-4px); border-color: var(--accent); }
.hobby-img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: var(--bg-alt); }
.hobby-img-placeholder {
    display: grid; place-items: center; font-size: 2rem; color: var(--accent);
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, var(--bg-alt)), color-mix(in srgb, var(--accent-2) 14%, var(--bg-alt)));
}
.hobby-body { padding: 20px 22px 22px; }
.hobby-body .meta { margin-bottom: 6px; }
.status { color: var(--accent-2); }

.empty { display: flex; gap: 20px; align-items: flex-start; border-style: dashed; }
.empty h3 { margin-top: 6px; }
.empty-code { margin: 14px 0 0; padding: 14px 16px; border-radius: var(--radius-sm); background: var(--bg-alt); border: 1px solid var(--border); font-size: .82rem; white-space: pre-wrap; }

.page-hero { padding: clamp(48px, 8vw, 90px) 0 24px; }
.page-hero .chips { margin-top: 10px; }
.back { margin-bottom: 26px; }
.project-img { border-radius: var(--radius); border: 1px solid var(--border); margin-bottom: 28px; }

/* Legal / long-form text (privacy page) */
.legal h2 { font-size: 1.3rem; margin: 2.2em 0 .6em; }
.legal h2:first-child { margin-top: 0; }
.legal ul { padding-left: 1.2em; margin: 0 0 1em; }
.legal li { margin-bottom: .4em; }
.legal code {
    font-family: var(--font-mono); font-size: .85em;
    padding: 1px 6px; border-radius: 4px; background: var(--bg-alt); border: 1px solid var(--border);
}
.footer-wrap a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.footer-wrap a:hover, .footer-wrap a[aria-current="page"] { color: var(--text); }

/* 404 */
.not-found { min-height: 60vh; }
.not-found-term {
    margin: 8px 0 24px; background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); white-space: pre-wrap; word-break: break-all;
}

/* Contact */
.contact { text-align: center; max-width: 760px; }
.contact .lead { margin-left: auto; margin-right: auto; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-wrap p { margin: 0; font-size: .8rem; }
.footer-wrap .version {
    padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border);
    color: var(--accent-2); white-space: nowrap;
}
.footer-links { display: flex; gap: 8px; }
.footer-links a { display: grid; place-items: center; width: 38px; height: 38px; border-radius: var(--radius-sm); color: var(--muted); border: 1px solid var(--border); }
.footer-links a:hover { color: var(--text); border-color: var(--accent); }

/* ---------- Motion ---------- */
@keyframes blink { 50% { opacity: 0; } }

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .js .reveal { opacity: 1; transform: none; transition: none; }
    .caret, .cursor { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
    .hero-grid, .two-col { grid-template-columns: 1fr; }
    .now-grid { grid-template-columns: 1fr 1fr; }
    .stack-grid, .hobby-grid { grid-template-columns: 1fr 1fr; }
    .stats { grid-template-columns: 1fr 1fr; }
    .stack-card:last-child:nth-child(3n + 1) { grid-column: auto; }
    .stack-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
}

/* Collapsed (hamburger) nav. Wider than the layout breakpoint below because
   the Greek labels plus the language switch need ~880px in a single row. */
@media (max-width: 900px) {
    .nav-toggle { display: grid; }
    .site-nav {
        display: none; position: absolute; top: 66px; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 2px;
        padding: 12px var(--gutter) 18px; background: var(--bg); border-bottom: 1px solid var(--border);
    }
    .site-nav.open { display: flex; }
    .site-nav a { padding: 12px; }
    .site-nav .nav-cta, .site-nav .lang-switch { margin-left: 0; }
    .theme-toggle { margin: 8px 0 0; }
}

@media (max-width: 760px) {
    .now-grid, .stack-grid, .hobby-grid, .hobby-grid.hobby-grid-2, .edu-grid { grid-template-columns: 1fr; }

    .timeline::before { left: 6px; }
    .timeline-item { grid-template-columns: 1fr; gap: 6px; padding-left: 30px; }
    .timeline-item::before { left: 0; top: 4px; }
    .timeline-when { text-align: left; padding: 0; }

    .empty { flex-direction: column; }
    .terminal-body { font-size: .74rem; }
}