/* ============================================================
   parser.css — Design "lexer / token stream"
   Thème : dark charcoal · amber tokens · tree structure · scan
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Fira+Code:wght@300;400;500;700&display=swap');

/* ── VARIABLES ─────────────────────────────────────────── */
:root {
    --bg:       #111318;
    --bg2:      #181c24;
    --bg3:      #1e2330;
    --bg4:      #242938;
    --border:   #2a3044;
    --border2:  #222840;

    --amber:    #f59e0b;
    --amber2:   #d97706;
    --amber-bg: rgba(245,158,11,.1);
    --amber-glow: rgba(245,158,11,.2);

    --cyan:     #22d3ee;
    --green:    #4ade80;
    --rose:     #fb7185;
    --violet:   #a78bfa;
    --blue:     #60a5fa;
    --orange:   #fb923c;

    --text:     #e2e8f0;
    --text2:    #8896b0;
    --text3:    #3d4d66;

    --mono:     'Fira Code', 'JetBrains Mono', monospace;
    --sans:     'Space Grotesk', system-ui, sans-serif;

    --r:        12px;
    --scan-dur: 2.4s;
    --shadow:   0 20px 60px rgba(0,0,0,.6);
}

/* ── RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--sans);
    font-weight: 400;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── SCAN LINE (progress) ──────────────────────────────── */
#scanline {
    position: fixed;
    top: 0; left: 0;
    height: 2px;
    width: 0%;
    z-index: 600;
    background: linear-gradient(90deg, transparent, var(--amber), var(--amber2), transparent);
    box-shadow: 0 0 12px var(--amber), 0 0 24px var(--amber-glow);
    transition: width .08s linear;
}

/* ── HEADER ────────────────────────────────────────────── */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0,0,0,.4);
}
.hdr-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.hdr-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}
.hdr-icon {
    width: 34px; height: 34px;
    border-radius: 8px;
    background: var(--amber);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--bg);
    font-weight: 700;
    font-family: var(--mono);
    flex-shrink: 0;
    box-shadow: 0 0 16px var(--amber-glow);
}
.hdr-title {
    font-family: var(--mono);
    font-size: .92rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: .5px;
}
.hdr-title .ext { color: var(--amber); }

.hdr-nav {
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
}
.hdr-nav::-webkit-scrollbar { display: none; }
.hdr-nav a {
    font-family: var(--mono);
    font-size: .68rem;
    color: var(--text3);
    text-decoration: none;
    padding: 0 14px;
    height: 54px;
    display: flex;
    align-items: center;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 2px solid transparent;
    transition: color .2s, border-color .2s;
    white-space: nowrap;
}
.hdr-nav a:hover, .hdr-nav a.active {
    color: var(--amber);
    border-bottom-color: var(--amber);
}

/* ── HERO ──────────────────────────────────────────────── */
.hero {
    position: relative;
    padding: 72px 24px 60px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

/* Grille de fond type PCB */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: .25;
    pointer-events: none;
}
/* Radial glow centré */
.hero::after {
    content: '';
    position: absolute;
    width: 700px; height: 400px;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(245,158,11,.1) 0%, transparent 70%);
    top: 0; left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
}

.hero-inner {
    max-width: 1120px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-left {}

.hero-eyebrow {
    font-family: var(--mono);
    font-size: .68rem;
    color: var(--amber);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hero-eyebrow::before {
    content: '//';
    opacity: .4;
}

.hero h1 {
    font-family: var(--mono);
    font-size: clamp(2.8rem, 5.5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -1.5px;
    color: var(--text);
    margin-bottom: 20px;
}
.hero h1 .tok {
    color: var(--amber);
    position: relative;
}
.hero h1 .tok::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: var(--amber);
    opacity: .4;
}

.hero-desc {
    font-size: 1rem;
    color: var(--text2);
    font-weight: 300;
    max-width: 460px;
    line-height: 1.75;
    margin-bottom: 28px;
}

/* Pill stats */
.hero-pills {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.hero-pill {
    font-family: var(--mono);
    font-size: .68rem;
    letter-spacing: 1px;
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg2);
    color: var(--text2);
    transition: border-color .2s, color .2s;
}
.hero-pill:hover { border-color: var(--amber); color: var(--amber); }
.hero-pill.hl { border-color: var(--amber2); color: var(--amber); background: var(--amber-bg); }

/* Hero visual — token stream animé */
.hero-visual {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.hv-bar {
    background: var(--bg3);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
}
.hv-dots { display: flex; gap: 5px; }
.hv-dots span { width: 10px; height: 10px; border-radius: 50%; }
.hv-r { background: #ff5f57; } .hv-y { background: #ffbd2e; } .hv-g { background: #28ca41; }
.hv-label {
    font-family: var(--mono);
    font-size: .62rem;
    color: var(--text3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-left: auto;
}
.hv-body { padding: 18px; }

/* Input string */
.hv-input {
    font-family: var(--mono);
    font-size: .85rem;
    color: var(--text2);
    margin-bottom: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    line-height: 2;
}
.hv-input .char {
    display: inline-block;
    padding: 1px 3px;
    border-radius: 2px;
    transition: background .15s, color .15s;
}
.hv-input .char.scanned {
    background: var(--amber-bg);
    color: var(--amber);
}

/* Token stream */
.token-stream {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-height: 42px;
}
.token {
    font-family: var(--mono);
    font-size: .72rem;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid;
    font-weight: 500;
    animation: tokenPop .3s cubic-bezier(.34,1.56,.64,1) both;
    display: flex;
    align-items: center;
    gap: 5px;
}
@keyframes tokenPop {
    from { opacity: 0; transform: scale(.7) translateY(4px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}
.tok-string  { color: #c3e88d; border-color: rgba(195,232,141,.3); background: rgba(195,232,141,.07); }
.tok-number  { color: var(--orange); border-color: rgba(251,146,60,.3); background: rgba(251,146,60,.07); }
.tok-key     { color: var(--cyan); border-color: rgba(34,211,238,.3); background: rgba(34,211,238,.07); }
.tok-punct   { color: var(--violet); border-color: rgba(167,139,250,.3); background: rgba(167,139,250,.07); }
.tok-kw      { color: var(--rose); border-color: rgba(251,113,133,.3); background: rgba(251,113,133,.07); }
.tok-type {
    font-size: .55rem;
    opacity: .6;
    letter-spacing: .5px;
    text-transform: uppercase;
}

/* ── CONTAINER ─────────────────────────────────────────── */
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 36px 24px 80px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

/* ── SECTION CARD ──────────────────────────────────────── */
.section {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,.3);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .4s ease, transform .4s ease, border-color .25s, box-shadow .25s;
}
.section.visible { opacity: 1; transform: translateY(0); }
.section:hover { border-color: rgba(245,158,11,.3); }

.section-head {
    padding: 14px 22px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.02);
    display: flex;
    align-items: center;
    gap: 14px;
}
.sec-num {
    font-family: var(--mono);
    font-size: .62rem;
    color: var(--amber);
    letter-spacing: 2px;
    min-width: 28px;
}
.section-head h2 {
    font-family: var(--sans);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    flex: 1;
    letter-spacing: -.2px;
}
.sec-tag {
    font-family: var(--mono);
    font-size: .6rem;
    color: var(--text3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 3px 8px;
    border: 1px solid var(--border2);
    border-radius: 4px;
}
.section-body { padding: 24px 22px; }

/* ── PARAGRAPHE ────────────────────────────────────────── */
p {
    font-size: .95rem;
    color: var(--text2);
    margin-bottom: 14px;
    line-height: 1.75;
    font-weight: 300;
}
p strong { font-weight: 600; color: var(--text); }

/* ── CODE BLOCK ────────────────────────────────────────── */
.code-wrap {
    margin: 16px 0;
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
}
.code-bar {
    background: var(--bg3);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
}
.cb-dots { display: flex; gap: 5px; }
.cb-dots span { width: 9px; height: 9px; border-radius: 50%; }
.cb-r { background: #ff5f57; }
.cb-y { background: #ffbd2e; }
.cb-g { background: #28ca41; }
.cb-lang {
    font-family: var(--mono);
    font-size: .6rem;
    color: var(--amber);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-left: auto;
}
.cb-copy {
    font-family: var(--mono);
    font-size: .6rem;
    background: none;
    border: 1px solid var(--border2);
    color: var(--text3);
    padding: 3px 8px;
    border-radius: 3px;
    cursor: pointer;
    transition: border-color .15s, color .15s;
}
.cb-copy:hover { border-color: var(--amber); color: var(--amber); }

pre {
    margin: 0;
    padding: 18px 18px;
    background: rgba(0,0,0,.35);
    font-family: var(--mono);
    font-size: .82rem;
    line-height: 1.8;
    overflow-x: auto;
    color: #c9d1d9;
}
.kw  { color: #ff79c6; }
.fn  { color: #8be9fd; }
.str { color: #f1fa8c; }
.cm  { color: #6272a4; font-style: italic; }
.var { color: #bd93f9; }
.num { color: var(--orange); }
.op  { color: var(--amber); }

/* ── PARSE TREE VISUALIZER ─────────────────────────────── */
.tree-wrap {
    margin: 16px 0;
    background: rgba(0,0,0,.3);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 20px;
    font-family: var(--mono);
    font-size: .78rem;
    overflow-x: auto;
}
.tree-node {
    position: relative;
    padding-left: 22px;
    margin: 3px 0;
    line-height: 1.7;
}
.tree-node::before {
    content: '';
    position: absolute;
    left: 6px; top: 0; bottom: 0;
    width: 1px;
    background: var(--border);
}
.tree-node:last-child::before { height: 12px; }
.tree-node::after {
    content: '';
    position: absolute;
    left: 6px; top: 12px;
    width: 10px; height: 1px;
    background: var(--border);
}
.tree-root { padding-left: 0; color: var(--amber); font-weight: 700; }
.tree-root::before, .tree-root::after { display: none; }
.tn-key   { color: var(--cyan); }
.tn-str   { color: #f1fa8c; }
.tn-num   { color: var(--orange); }
.tn-bool  { color: var(--rose); }
.tn-null  { color: var(--text3); }
.tn-obj   { color: var(--amber); }
.tn-arr   { color: var(--violet); }
.tn-type {
    font-size: .58rem;
    opacity: .55;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-left: 6px;
    vertical-align: middle;
}

/* ── TYPES GRID ────────────────────────────────────────── */
.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    margin: 16px 0;
}
.type-card {
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: var(--r);
    padding: 16px;
    position: relative;
    overflow: hidden;
    transition: border-color .2s, transform .2s, box-shadow .2s;
    cursor: default;
}
.type-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--tc-color, var(--amber));
    opacity: 0;
    transition: opacity .2s;
}
.type-card:hover { border-color: var(--tc-color, var(--amber)); transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.4); }
.type-card:hover::before { opacity: 1; }
.tc-icon { font-size: 1.4rem; margin-bottom: 10px; display: block; }
.tc-name {
    font-family: var(--mono);
    font-size: .82rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
    letter-spacing: .3px;
}
.tc-desc { font-size: .75rem; color: var(--text2); line-height: 1.5; }
.tc-ext {
    display: inline-block;
    font-family: var(--mono);
    font-size: .58rem;
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
    color: var(--text3);
    margin-top: 8px;
    letter-spacing: 1px;
}

/* ── PIPE VISUAL ───────────────────────────────────────── */
.pipe-visual {
    display: flex;
    align-items: center;
    gap: 0;
    margin: 16px 0;
    flex-wrap: wrap;
}
.pipe-cell {
    font-family: var(--mono);
    font-size: .85rem;
    padding: 10px 18px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-right: none;
    color: var(--amber);
    font-weight: 500;
    transition: background .2s;
}
.pipe-cell:first-child { border-radius: 8px 0 0 8px; }
.pipe-cell:last-child { border-right: 1px solid var(--border); border-radius: 0 8px 8px 0; }
.pipe-cell:hover { background: var(--amber-bg); }
.pipe-sep {
    font-family: var(--mono);
    font-size: .8rem;
    color: var(--rose);
    padding: 10px 6px;
    background: var(--bg3);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    font-weight: 700;
}

/* Arrow between input and cells */
.pipe-arrow {
    margin: 0 12px;
    color: var(--amber);
    font-size: 1rem;
    animation: arrowPulse 1.6s ease-in-out infinite;
}
@keyframes arrowPulse {
    0%,100% { opacity: .4; transform: translateX(0); }
    50%      { opacity: 1;  transform: translateX(4px); }
}

/* ── NOTICE ────────────────────────────────────────────── */
.notice {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid;
    margin: 14px 0;
    font-size: .88rem;
    line-height: 1.65;
}
.notice-icon { flex-shrink: 0; margin-top: 1px; }
.n-amber { border-color: rgba(245,158,11,.4); background: rgba(245,158,11,.07); color: #fde68a; }
.n-ok    { border-color: rgba(74,222,128,.4);  background: rgba(74,222,128,.07);  color: #bbf7d0; }
.n-info  { border-color: rgba(96,165,250,.4);  background: rgba(96,165,250,.07);  color: #bfdbfe; }

/* ── LIVE PARSER TOOL ──────────────────────────────────── */
.tool-box {
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
    margin: 16px 0;
}
.tool-bar {
    background: var(--bg3);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.tool-title {
    font-family: var(--mono);
    font-size: .68rem;
    color: var(--amber);
    letter-spacing: 2px;
    text-transform: uppercase;
}
.tool-live {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--mono);
    font-size: .62rem;
    color: var(--green);
    letter-spacing: 1px;
}
.tool-live-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 5px var(--green);
    animation: lvPulse 1.8s ease-in-out infinite;
}
@keyframes lvPulse { 0%,100%{opacity:1}50%{opacity:.3} }
.tool-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}
.tool-pane {
    padding: 16px;
    border-right: 1px solid var(--border);
}
.tool-pane:last-child { border-right: none; }
.tool-pane label {
    display: block;
    font-family: var(--mono);
    font-size: .6rem;
    color: var(--text3);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.tool-select {
    width: 100%;
    margin-bottom: 10px;
    padding: 8px 12px;
    background: var(--bg4);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 6px;
    font-family: var(--mono);
    font-size: .8rem;
    outline: none;
    cursor: pointer;
    transition: border-color .2s;
}
.tool-select:focus { border-color: var(--amber); }
.tool-input {
    width: 100%;
    padding: 10px 12px;
    background: rgba(0,0,0,.3);
    border: 1px solid var(--border);
    color: var(--amber);
    border-radius: 6px;
    font-family: var(--mono);
    font-size: .82rem;
    outline: none;
    resize: vertical;
    min-height: 80px;
    transition: border-color .2s;
}
.tool-input:focus { border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-glow); }
.tool-output {
    min-height: 80px;
    padding: 12px;
    background: rgba(0,0,0,.3);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: var(--mono);
    font-size: .78rem;
    line-height: 1.75;
    overflow-x: auto;
    white-space: pre-wrap;
}
.out-key   { color: var(--cyan); }
.out-str   { color: #f1fa8c; }
.out-num   { color: var(--orange); }
.out-bool  { color: var(--rose); }
.out-null  { color: var(--text3); }
.out-ok    { color: var(--green); }
.out-err   { color: var(--rose); }
.out-dim   { color: var(--text3); }
.out-pipe  { color: var(--amber); }

/* ── SCROLL TO TOP ─────────────────────────────────────── */
#top-btn {
    position: fixed;
    right: 22px; bottom: 22px;
    width: 42px; height: 42px;
    border-radius: 50%;
    background: var(--bg2);
    border: 1px solid var(--border);
    color: var(--amber);
    display: flex; align-items: center; justify-content: center;
    text-decoration: none;
    font-family: var(--mono);
    font-size: 1rem;
    box-shadow: var(--shadow);
    opacity: 0; pointer-events: none;
    transform: translateY(10px);
    transition: opacity .3s, transform .3s, border-color .2s, box-shadow .2s;
    z-index: 200;
}
#top-btn.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
#top-btn:hover { border-color: var(--amber); box-shadow: 0 0 20px var(--amber-glow); }

/* ── FOOTER ────────────────────────────────────────────── */
footer {
    background: var(--bg2);
    border-top: 1px solid var(--border);
    padding: 20px 24px;
    text-align: center;
    font-family: var(--mono);
    font-size: .68rem;
    color: var(--text3);
    letter-spacing: 1px;
}
footer .fa { color: var(--amber); }

/* ── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 820px) {
    .hero-inner { grid-template-columns: 1fr; gap: 32px; }
    .hero-visual { max-width: 560px; }
    .tool-body { grid-template-columns: 1fr; }
    .tool-pane:first-child { border-right: none; border-bottom: 1px solid var(--border); }
    .types-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
    .hero { padding: 48px 16px 40px; }
    .hero h1 { font-size: 2.4rem; }
    .container { padding: 24px 14px 60px; gap: 16px; }
    .section-body { padding: 18px 14px; }
    .types-grid { grid-template-columns: 1fr; }
    .pipe-visual { gap: 0; }
}