/* ══════════════════════════════════════════════════════════
   ZX SPECTRUM 48K — CSS Design System
   Homage to the Sinclair ZX Spectrum 48K (1982)
   ══════════════════════════════════════════════════════════ */

/* ── Spectrum Palette ───────────────────────────────────── */
:root {
    /* Standard 8 colours */
    --spec-black:   #000000;
    --spec-blue:    #0000C5;
    --spec-red:     #C50000;
    --spec-magenta: #C500C5;
    --spec-green:   #00C500;
    --spec-cyan:    #00C5C5;
    --spec-yellow:  #C5C500;
    --spec-white:   #C5C5C5;

    /* BRIGHT variants */
    --spec-bright-blue:    #0000FF;
    --spec-bright-red:     #FF0000;
    --spec-bright-magenta: #FF00FF;
    --spec-bright-green:   #00FF00;
    --spec-bright-cyan:    #00FFFF;
    --spec-bright-yellow:  #FFFF00;
    --spec-bright-white:   #FFFFFF;

    /* UI */
    --bg:           #080808;
    --border-dim:   #2a2a2a;
    --text-dim:     #606060;
    --text-muted:   #444444;

    /* Typography */
    --font-main: 'Share Tech Mono', 'Courier New', monospace;
    --font-display: 'VT323', 'Share Tech Mono', monospace;

    /* Transitions */
    --t: 0.15s ease;
}

/* ── Reset & Base ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--spec-white);
    font-family: var(--font-main);
    font-size: 15px;
    line-height: 1.5;
    overflow-x: hidden;
    position: relative;
    /* slight CRT phosphor tint */
    background-image: radial-gradient(ellipse at center, #0a0e0a 0%, #000000 100%);
}

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


/* ── Screen border glow ────────────────────────────────── */
.screen-border {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 999;
    box-shadow: inset 0 0 60px rgba(0, 197, 0, 0.04),
                inset 0 0 2px  rgba(0, 255, 0, 0.08);
}

/* ── Container ─────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ══════════════════════════════════════════════════════════
   RAINBOW BAR — the signature Spectrum stripe
   ══════════════════════════════════════════════════════════ */
.rainbow-bar {
    display: flex;
    height: 10px;
    width: 100%;
}
.rb { flex: 1; }
.rb-black   { background: #000000; }
.rb-blue    { background: var(--spec-bright-blue); }
.rb-red     { background: var(--spec-bright-red); }
.rb-magenta { background: var(--spec-bright-magenta); }
.rb-green   { background: var(--spec-bright-green); }
.rb-cyan    { background: var(--spec-bright-cyan); }
.rb-yellow  { background: var(--spec-bright-yellow); }
.rb-white   { background: var(--spec-bright-white); }

/* ══════════════════════════════════════════════════════════
   HEADER — ZX Spectrum boot screen
   ══════════════════════════════════════════════════════════ */
.header {
    border-bottom: 2px solid var(--spec-white);
    margin-bottom: 0;
    background: var(--spec-black);
}

.boot-screen {
    padding: 32px 24px 24px;
}

/* ── Boot logo ─────────────────────────────────────────── */
.boot-logo {
    margin-bottom: 12px;
}
.logo-sinclair {
    font-family: var(--font-display);
    font-size: 1.4rem;
    letter-spacing: 0.04em;
    color: var(--spec-bright-cyan);
    text-shadow: 0 0 8px var(--spec-cyan);
}

/* ── Boot info lines ───────────────────────────────────── */
.boot-info { margin-bottom: 24px; }
.boot-line  { font-family: var(--font-main); font-size: 0.9rem; }

/* ── Header owner block ────────────────────────────────── */
.header-owner {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    align-items: flex-start;
    margin-bottom: 24px;
}

/* ── BASIC listing style ───────────────────────────────── */
.owner-block { display: flex; flex-direction: column; gap: 4px; }

.basic-rem {
    font-family: var(--font-main);
    font-size: 1rem;
    color: var(--spec-white);
}

.line-num {
    color: var(--spec-cyan);
    margin-right: 8px;
    display: inline-block;
    min-width: 28px;
    text-align: right;
}

.kw   { color: var(--spec-bright-white); font-weight: bold; }
.str  { color: var(--spec-bright-red); }

/* ── Prompt line ───────────────────────────────────────── */
.prompt-line {
    font-family: var(--font-main);
    font-size: 1.1rem;
    margin-top: 8px;
    color: var(--spec-bright-white);
}
.prompt-k { color: var(--spec-bright-cyan); margin-right: 4px; }

/* ── Cursor blink ──────────────────────────────────────── */
.cursor { color: var(--spec-bright-white); }
.blink  { animation: blink-cursor 1s step-end infinite; }
@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

/* ══════════════════════════════════════════════════════════
   BUTTONS — Spectrum key style
   ══════════════════════════════════════════════════════════ */
.spec-btn {
    display: inline-block;
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: bold;
    letter-spacing: 0.06em;
    padding: 6px 14px;
    border: 2px solid currentColor;
    cursor: pointer;
    transition: background var(--t), color var(--t), box-shadow var(--t);
    white-space: nowrap;
    text-transform: uppercase;
}

/* Colour variants */
.spec-btn-cyan {
    color: var(--spec-bright-cyan);
    border-color: var(--spec-bright-cyan);
}
.spec-btn-cyan:hover {
    background: var(--spec-bright-cyan);
    color: var(--spec-black);
    box-shadow: 0 0 12px var(--spec-cyan);
}

.spec-btn-yellow {
    color: var(--spec-bright-yellow);
    border-color: var(--spec-bright-yellow);
}
.spec-btn-yellow:hover {
    background: var(--spec-bright-yellow);
    color: var(--spec-black);
    box-shadow: 0 0 12px var(--spec-yellow);
}

.spec-btn-green {
    color: var(--spec-bright-green);
    border-color: var(--spec-bright-green);
}
.spec-btn-green:hover {
    background: var(--spec-bright-green);
    color: var(--spec-black);
    box-shadow: 0 0 14px var(--spec-green);
}

.spec-btn-dim {
    color: var(--spec-white);
    border-color: var(--text-dim);
}
.spec-btn-dim:hover {
    border-color: var(--spec-white);
    color: var(--spec-bright-white);
}

/* Header link buttons */
.header-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 4px;
}

/* ══════════════════════════════════════════════════════════
   SECTION HEADER
   ══════════════════════════════════════════════════════════ */
.section-header {
    padding: 40px 0 28px;
}

.section-label {
    font-size: 1.1rem;
    margin-bottom: 14px;
}

.section-divider {
    height: 2px;
    background: linear-gradient(
        to right,
        var(--spec-bright-cyan),
        var(--spec-bright-blue),
        var(--spec-bright-green),
        var(--spec-bright-yellow),
        var(--spec-bright-red),
        var(--spec-bright-magenta)
    );
    opacity: 0.6;
}

/* ══════════════════════════════════════════════════════════
   FEATURED GRID
   ══════════════════════════════════════════════════════════ */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 20px;
    padding-bottom: 60px;
}

/* ── Project Card ──────────────────────────────────────── */
.project-card {
    background: #0b0b0b;
    border: 1px solid var(--border-dim);
    position: relative;
    display: flex;
    flex-direction: column;
    transition: border-color var(--t), box-shadow var(--t);
    overflow: hidden;
}

.project-card:hover {
    border-color: var(--spec-white);
}

/* ── Colour accent bar (top of card, 4px) ─────────────── */
.card-color-bar { height: 4px; width: 100%; flex-shrink: 0; }

.bar-cyan    { background: var(--spec-bright-cyan); }
.bar-blue    { background: var(--spec-bright-blue); }
.bar-yellow  { background: var(--spec-bright-yellow); }
.bar-magenta { background: var(--spec-bright-magenta); }
.bar-red     { background: var(--spec-bright-red); }
.bar-white   { background: var(--spec-bright-white); }

.card-inner {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    gap: 10px;
}

/* ── Card listing line ─────────────────────────────────── */
.card-listing {
    display: flex;
    align-items: baseline;
    gap: 10px;
    border-bottom: 1px solid var(--border-dim);
    padding-bottom: 8px;
    margin-bottom: 2px;
}

.list-line-num {
    font-family: var(--font-main);
    font-size: 0.75rem;
    color: var(--spec-cyan);
    min-width: 16px;
}

.list-num {
    font-family: var(--font-display);
    font-size: 1.4rem;
    letter-spacing: 0.04em;
    line-height: 1;
}

/* ── Domain ────────────────────────────────────────────── */
.card-domain {
    font-family: var(--font-main);
    font-size: 0.78rem;
    letter-spacing: 0.05em;
}

/* ── Description ───────────────────────────────────────── */
.card-desc {
    font-family: var(--font-main);
    font-size: 0.88rem;
    color: var(--spec-white);
    line-height: 1.5;
    flex-grow: 1;
}

/* ── Tags ──────────────────────────────────────────────── */
.card-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.spec-tag {
    font-family: var(--font-main);
    font-size: 0.72rem;
    font-weight: bold;
    letter-spacing: 0.06em;
    padding: 2px 8px;
    border: 1px solid currentColor;
    text-transform: uppercase;
}

/* Tag colours */
.tag-js      { color: var(--spec-bright-yellow); }
.tag-canvas  { color: var(--spec-bright-cyan); }
.tag-css     { color: var(--spec-bright-blue); }
.tag-ts      { color: var(--spec-bright-cyan); }
.tag-react   { color: var(--spec-bright-magenta); }
.tag-data    { color: var(--spec-bright-green); }
.tag-art     { color: var(--spec-bright-red); }
.tag-fun     { color: var(--spec-bright-white); }

/* ── Card Actions ──────────────────────────────────────── */
.card-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 4px;
}

.load-btn {
    flex: 1;
    text-align: center;
    font-size: 1rem;
    font-family: var(--font-display);
    letter-spacing: 0.1em;
    padding: 8px 14px;
}

/* ══════════════════════════════════════════════════════════
   COLOUR UTILITY CLASSES (Spectrum INK colours)
   ══════════════════════════════════════════════════════════ */
.bright-white   { color: var(--spec-bright-white); }
.bright-cyan    { color: var(--spec-bright-cyan); }
.bright-yellow  { color: var(--spec-bright-yellow); }
.bright-green   { color: var(--spec-bright-green); }
.bright-magenta { color: var(--spec-bright-magenta); }
.bright-red     { color: var(--spec-bright-red); }
.bright-blue    { color: var(--spec-bright-blue); }
.dim            { color: var(--text-dim); }

/* ── Card hover accent glow ────────────────────────────── */
#card-clock:hover   { box-shadow: 0 0 18px rgba(0,255,255,0.12); }
#card-clocks:hover  { box-shadow: 0 0 18px rgba(0,0,255,0.15); }
#card-anagram:hover { box-shadow: 0 0 18px rgba(255,255,0,0.10); }
#card-pl:hover      { box-shadow: 0 0 18px rgba(255,0,255,0.12); }
#card-emoji:hover   { box-shadow: 0 0 18px rgba(255,0,0,0.12); }
#card-thailand:hover{ box-shadow: 0 0 18px rgba(255,255,255,0.08); }

/* ══════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════ */
.footer {
    border-top: 2px solid var(--spec-white);
    background: var(--spec-black);
}

.footer-inner {
    padding: 20px 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.footer-break {
    font-family: var(--font-display);
    font-size: 1.4rem;
    letter-spacing: 0.08em;
}

.footer-copy {
    font-family: var(--font-main);
    font-size: 0.8rem;
}

.footer-copy a {
    color: var(--spec-bright-cyan);
    text-decoration: underline;
}

.footer-copy a:hover {
    color: var(--spec-bright-white);
}

/* ══════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════ */
@media (max-width: 700px) {
    .header-owner { flex-direction: column; gap: 20px; }
    .header-links { flex-direction: row; flex-wrap: wrap; }
    .featured-grid { grid-template-columns: 1fr; }
    .footer-inner  { flex-direction: column; text-align: center; }
    .logo-sinclair { font-size: 1.1rem; }
}