/*
   JSON FORMATTER — EXPERT WEB TOOLS
*/

@font-face { font-family: 'Inter';       src: url('/fonts/inter-v20-latin-regular.woff2') format('woff2');       font-weight: 400; font-display: swap; }
@font-face { font-family: 'Orbitron';    src: url('/fonts/orbitron-v35-latin-700.woff2') format('woff2');        font-weight: 700; font-display: swap; }
@font-face { font-family: 'Roboto Mono'; src: url('/fonts/roboto-mono-v31-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }

:root {
    --bg-dark:          #0a0a0f;
    --primary-accent:   #3b82f6;
    --secondary-accent: #8b5cf6;
    --text-main:        #ffffff;
    --text-muted:       #94a3b8;
    --card-bg:          rgba(25, 25, 35, 0.6);
    --card-border:      rgba(255, 255, 255, 0.08);
    --editor-bg:        #0d0d12;
    --input-bg:         rgba(255, 255, 255, 0.05);
    --faq-bg:           rgba(255, 255, 255, 0.03);
    --faq-hover:        rgba(255, 255, 255, 0.06);

    --json-key:     #60a5fa;
    --json-string:  #fb923c;
    --json-number:  #4ade80;
    --json-boolean: #c084fc;
    --json-null:    #f472b6;

    --font-heading: 'Orbitron', sans-serif;
    --font-body:    'Inter', sans-serif;
    --font-code:    'Roboto Mono', monospace;
}

/* Light Theme Variables (Synchronized Architecture) */
html.light-theme {
    --bg-dark: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: #cbd5e1;
    --editor-bg: #ffffff;
    --input-bg: #f1f5f9;
    --faq-bg: #ffffff;
    --faq-hover: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #475569;

    --json-key:     #2563eb;
    --json-string:  #ea580c;
    --json-number:  #16a34a;
    --json-boolean: #9333ea;
    --json-null:    #db2777;
}

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

html, body { width: 100%; }

/* STRICT CHROMIUM BUG FIX: transition background-color only */
html, body {
    background-color: var(--bg-dark);
    transition: background-color 0.2s ease;
}

body {
    color: var(--text-main); font-family: var(--font-body);
    min-height: 100vh; display: flex; flex-direction: column;
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

.background-glow {
    position: fixed; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at center, rgba(139,92,246,0.08) 0%, rgba(10,10,15,0) 50%);
    z-index: -1; pointer-events: none;
}
html.light-theme .background-glow { 
    background: radial-gradient(circle at center, rgba(139,92,246,0.15) 0%, rgba(248,250,252,0) 50%); 
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }

/* ── Header ─────────────────────────────────────────────────────────── */
.tool-header { display: flex; justify-content: space-between; align-items: center; padding: 1.5rem 5%; max-width: 1400px; margin: 0 auto; width: 100%; }
.back-btn { color: var(--text-muted); text-decoration: none; display: flex; align-items: center; gap: 8px; transition: color 0.3s; }
.back-btn:hover { color: var(--primary-accent); }
.logo { font-family: var(--font-heading); font-size: 1.2rem; }
.logo span { color: var(--secondary-accent); }

/* Sync'd Theme Toggle Button */
.theme-toggle-btn { 
    background: var(--input-bg); border: 1px solid var(--card-border); 
    color: var(--text-main); width: 36px; height: 36px; border-radius: 8px; 
    cursor: pointer; display: flex; align-items: center; justify-content: center; 
    transition: all 0.2s ease;
}
.theme-toggle-btn:hover { border-color: var(--primary-accent); color: var(--primary-accent); }

.main-content { flex-grow: 1; padding: 2rem clamp(1rem, 5%, 5%); max-width: 1400px; margin: 0 auto; width: 100%; }
.tool-container {
    background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px; padding: 2rem;
    backdrop-filter: blur(10px); box-shadow: 0 10px 30px rgba(0,0,0,0.3); width: 100%; min-width: 0;
}
.tool-intro { text-align: center; margin-bottom: 2rem; }
.tool-intro h1 { font-family: var(--font-heading); margin-bottom: 0.5rem; font-size: clamp(1.4rem, 4vw, 2rem); }
.tool-intro p  { color: var(--text-muted); }
.tool-intro .h1-ampersand { font-family: var(--font-body); font-weight: 300; }

/* ── Toolbar ─────────────────────────────────────────────────────────── */
.toolbar {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1rem;
    background: rgba(255,255,255,0.03); padding: 10px; border-radius: 12px; align-items: center;
}
html.light-theme .toolbar { background: rgba(0,0,0,0.03); }

.toolbar .group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filter-group { flex-grow: 1; max-width: 350px; }

.filter-wrapper {
    display: flex; align-items: center; background: var(--input-bg); border: 1px solid var(--card-border);
    border-radius: 8px; padding: 0 10px; width: 100%; transition: border-color 0.2s;
}
.filter-wrapper:focus-within { border-color: var(--primary-accent); }
.filter-wrapper i { color: var(--text-muted); font-size: 0.8rem; }
.filter-wrapper input {
    background: transparent; border: none; color: var(--text-main); padding: 8px 10px;
    font-family: var(--font-code); font-size: 0.85rem; width: 100%; outline: none;
}

.tool-btn {
    background: transparent; border: 1px solid var(--card-border); color: var(--text-muted);
    padding: 8px 14px; border-radius: 8px; cursor: pointer; font-family: var(--font-heading);
    font-size: 0.82rem; display: flex; align-items: center; gap: 8px; transition: background 0.2s, color 0.2s; white-space: nowrap;
}
.tool-btn:hover  { background: rgba(255,255,255,0.05); color: var(--text-main); }
html.light-theme .tool-btn:hover { background: rgba(0,0,0,0.05); }

.tool-btn.primary { background: var(--primary-accent); color: #fff; border-color: var(--primary-accent); }
.tool-btn.primary:hover { background: #2563eb; }
.tool-btn.danger:hover  { border-color: #ef4444; color: #ef4444; }

.toggle-checkbox { display: flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: 0.85rem; cursor: pointer; user-select: none; margin-left: 4px; }
.toggle-checkbox input { accent-color: var(--primary-accent); cursor: pointer; width: 14px; height: 14px; }

/* ── IO Container ────────────────────────────────────────────────────── */
.io-container { display: flex; gap: 20px; min-height: 500px; height: 65vh; }
.input-pane, .output-pane { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.pane-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; flex-wrap: wrap; gap: 6px; }
.pane-header label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; font-weight: bold; }

.output-controls { display: flex; gap: 10px; align-items: center; }
.view-toggles { display: flex; background: var(--input-bg); border: 1px solid var(--card-border); border-radius: 6px; overflow: hidden; }
.view-btn { background: transparent; border: none; color: var(--text-muted); padding: 4px 10px; font-size: 0.75rem; cursor: pointer; font-family: var(--font-heading); transition: background 0.2s, color 0.2s; }
.view-btn.active { background: var(--primary-accent); color: #fff; }

.payload-stats { font-family: var(--font-code); font-size: 0.75rem; color: var(--text-muted); background: var(--input-bg); border: 1px solid var(--card-border); padding: 2px 8px; border-radius: 4px; white-space: nowrap; }
.badge { font-family: var(--font-body); font-size: 0.75rem; padding: 2px 8px; border-radius: 4px; font-weight: bold; }
.badge.warning { background: rgba(245,158,11,0.2); color: #f59e0b; }

textarea, .output-wrapper {
    flex-grow: 1; background: var(--editor-bg); border: 1px solid var(--card-border);
    border-radius: 8px; font-family: var(--font-code); font-size: 16px; color: var(--text-main); width: 100%;
}
textarea { padding: 1rem; outline: none; line-height: 1.5; resize: vertical; min-height: 200px; overflow-x: auto; }
textarea:focus { border-color: var(--primary-accent); }

/* ── Code View Output ───────────────────────────────────────────── */
.output-wrapper { overflow: auto; position: relative; padding: 1rem 0; }
pre { margin: 0; counter-reset: line; }
code { display: block; }
.json-line {
    display: block; line-height: 1.5; padding-left: 3.5rem; position: relative;
    word-break: break-all; white-space: pre-wrap; font-size: 14px;
}
.json-line::before {
    counter-increment: line; content: counter(line); position: absolute; left: 0; width: 3rem;
    text-align: right; color: #475569; padding-right: 0.7rem; user-select: none; font-size: 0.8rem; line-height: 1.5; border-right: 1px solid var(--card-border);
}

.error-line { background: rgba(239,68,68,0.2); border-top: 1px solid rgba(239,68,68,0.4); border-bottom: 1px solid rgba(239,68,68,0.4); }

/* ── Tree View Output ───────────────────────────────────────────── */
.tree-view-container { padding: 0 1.5rem 1.5rem 1.5rem; font-family: var(--font-code); font-size: 14px; line-height: 1.6; word-break: break-all; }
.tree-children { padding-left: 1.5rem; border-left: 1px dashed var(--card-border); margin-left: 0.5rem; }
.tree-row { margin: 2px 0; }
.tree-count { color: var(--text-muted); font-size: 0.75rem; font-style: italic; margin-left: 6px; user-select: none; }
.tree-bracket { color: var(--text-muted); }
.tree-key { color: var(--json-key); }

details.tree-node > summary { 
    cursor: pointer; 
    list-style: none; 
    outline: none; 
    display: block; 
}
details.tree-node > summary::-webkit-details-marker { display: none; }

.tree-summary-content {
    display: inline-flex;
    align-items: center;
}
.tree-arrow {
    font-size: 0.7rem; color: var(--text-muted); margin-right: 8px; 
    transition: transform 0.2s; width: 12px; text-align: center; display: inline-block;
}
details.tree-node[open] > summary .tree-arrow { transform: rotate(90deg); }

.json-key     { color: var(--json-key); }
.json-string  { color: var(--json-string); }
.json-number  { color: var(--json-number); }
.json-boolean { color: var(--json-boolean); }
.json-null    { color: var(--json-null); }

/* ── Status Messages ─────────────────────────────────────────────────── */
.status-message { margin-top: 1rem; padding: 1rem; border-radius: 8px; font-family: var(--font-code); font-size: 0.9rem; line-height: 1.5; }
.status-message.success { background: rgba(16,185,129,0.1); color: #10b981; border: 1px solid rgba(16,185,129,0.2); }
.status-message.error   { background: rgba(239,68,68,0.1);  color: #ef4444; border: 1px solid rgba(239,68,68,0.2); }

.toast {
    display: block; position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
    background: #1e1e24; border: 1px solid var(--primary-accent); color: #fff;
    padding: 10px 20px; border-radius: 8px; z-index: 2000; box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    transition: opacity 0.3s; font-size: 0.9rem; pointer-events: none; white-space: nowrap; max-width: calc(100vw - 2rem);
}
html.light-theme .toast { background: #ffffff; color: #0f172a; border: 1px solid var(--primary-accent); }
.hidden { display: none !important; }

/* ── FAQ Section (HTML5 Accordions) ─────────────────────────────────── */
.info-section { margin-top: 4rem; text-align: center; }
.info-section h2 { margin-bottom: 2rem; color: var(--text-main); font-family: var(--font-heading); font-size: 1.4rem; }
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
.info-card { background: var(--faq-bg); padding: 2rem; border-radius: 12px; border: 1px solid var(--card-border); }
.info-card i  { font-size: 2rem; color: var(--secondary-accent); margin-bottom: 1rem; display: block; }
.info-card h3 { margin-bottom: 0.5rem; font-family: var(--font-heading); font-size: 1.1rem; color: var(--text-main); }
.info-card p  { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

.faq-container { margin: 4rem auto 0; text-align: left; max-width: 800px; }
.faq-container h3 { font-family: var(--font-heading); color: var(--text-main); margin-bottom: 2rem; text-align: center; font-size: 1.5rem;}
.faq-item { background: var(--faq-bg); border: 1px solid var(--card-border); border-radius: 8px; margin-bottom: 1rem; overflow: hidden; transition: background 0.2s; }
.faq-item:hover { background: var(--faq-hover); }
.faq-item summary {
    padding: 1.25rem; font-weight: 600; font-size: 1rem; color: var(--text-main); cursor: pointer; list-style: none;
    position: relative; display: flex; justify-content: space-between; align-items: center; outline: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; color: var(--primary-accent); font-family: var(--font-code); font-size: 1.25rem; font-weight: normal; transition: transform 0.2s; }
.faq-item[open] summary::after { content: '−'; transform: rotate(90deg); }
.faq-item summary:focus-visible { box-shadow: inset 0 0 0 2px var(--primary-accent); border-radius: 8px; }
.faq-content { padding: 0 1.25rem 1.25rem 1.25rem; color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; border-top: 1px solid transparent; }
.faq-item[open] .faq-content { border-top-color: var(--card-border); padding-top: 1rem; }
.faq-content code { background: rgba(0,0,0,0.3); padding: 2px 6px; border-radius: 4px; font-family: var(--font-code); color: var(--primary-accent); }
html.light-theme .faq-content code { background: rgba(0,0,0,0.05); }

footer { text-align: center; padding: 3rem 0; color: var(--text-muted); font-size: 0.9rem; margin-top: 3rem; }
footer a       { color: var(--text-main); text-decoration: none; }
footer a:hover { color: var(--primary-accent); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; } }
@media (max-width: 900px) {
    .io-container { flex-direction: column; height: auto; min-height: unset; gap: 1rem; }
    textarea, .output-wrapper { min-height: 300px; }
    .toolbar { flex-direction: column; align-items: flex-start; }
    .toolbar .group { width: 100%; max-width: 100%; }
    .tool-btn { flex: 1; justify-content: center; }
    .toggle-checkbox { flex: 0 0 auto; }
}
@media (max-width: 600px) {
    .tool-header, .main-content { padding: 1rem; }
    .tool-container { padding: 1rem; border-radius: 12px; }
    .json-line { padding-left: 2.5rem; font-size: 12px; }
    .json-line::before { width: 2rem; font-size: 0.72rem; }
    .info-grid { grid-template-columns: 1fr; }
    textarea { font-size: 14px; }
    .faq-item summary { font-size: 0.9rem; }
}
@media (max-width: 380px) {
    .tool-intro h1 { font-size: 1.2rem; }
    .tool-container { padding: 0.75rem; }
    .tool-btn { font-size: 0.75rem; padding: 7px 10px; }
}