:root{--violet:#6d28d9;--violet2:#8b5cf6;--teal:#0f9f94;--coral:#f97360;--ink:#251a3b;--soft:#f7f3ff;--paper:#fffdfb;--border:#e5dff0;--muted:#675f73;--yellow:#f4c95d;--radius:20px;--shadow:0 14px 34px rgba(61,37,92,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:linear-gradient(180deg,#fffdfb,#f7f3ff 42%,#f4fbfa);line-height:1.65}a{color:var(--violet);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(1180px,94%);margin:auto}.site-header{background:rgba(255,253,251,.96);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);box-shadow:0 5px 18px rgba(61,37,92,.07)}.header-grid{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}.logo{display:flex;align-items:center;gap:12px;color:var(--ink)}.logo:hover{text-decoration:none}.logo-icon{background:linear-gradient(135deg,var(--violet),var(--teal));color:#fff;width:50px;height:50px;border-radius:16px;display:grid;place-items:center;font-weight:bold;box-shadow:0 8px 18px rgba(109,40,217,.22)}.logo strong{display:block;font-size:1.4rem;letter-spacing:.04em}.logo small{display:block;color:var(--muted);font-size:.76rem}.main-nav{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.main-nav a{color:var(--ink);padding:8px 11px;border-radius:999px;background:#f4effb}.main-nav a:hover{background:var(--violet);color:#fff;text-decoration:none}.hero{padding:48px 0 22px}.hero-card{background:radial-gradient(circle at 90% 10%,rgba(15,159,148,.17),transparent 30%),linear-gradient(135deg,#fff,#f3ebff);border:1px solid var(--border);border-radius:30px;padding:38px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;overflow:hidden}.hero h1{font-size:clamp(2.2rem,4vw,4.2rem);line-height:1.02;margin:0 0 15px;color:var(--ink)}.hero p{font-size:1.14rem;color:var(--muted);margin:0 0 22px}.hero-art{background:linear-gradient(145deg,#281a46,#4b2d72);border-radius:24px;padding:24px;color:#eafffb;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 18px 35px rgba(37,26,59,.18)}.hero-art code{display:block;white-space:pre-wrap;font-size:.95rem}.btns{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 17px;border-radius:999px;background:linear-gradient(135deg,var(--violet),var(--violet2));color:#fff;font-weight:bold;border:0;cursor:pointer;box-shadow:0 7px 15px rgba(109,40,217,.18)}.btn:hover{text-decoration:none;filter:brightness(.95)}.btn.secondary{background:#fff;color:var(--violet);border:1px solid #d7c9ed;box-shadow:none}.horizontal-ad{margin:0 auto 26px;background:linear-gradient(90deg,#fff7e3,#fff,#ecfffc);border:1px dashed #d9a82f;border-radius:18px;min-height:105px;padding:18px;display:flex;align-items:center;justify-content:center;text-align:center}.horizontal-ad span,.ad-box span,.footer-ad span{display:block;text-transform:uppercase;font-size:.72rem;color:#9c6c13;letter-spacing:.1em}.horizontal-ad strong,.ad-box strong,.footer-ad strong{display:block;color:#5d4214;font-size:1.05rem}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px;align-items:start;padding:22px 0 42px}.content-box,.tool-box{background:rgba(255,255,255,.94);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);margin-bottom:22px}.tool-intro{font-size:1.06rem}.explain-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}.explain-card{background:#faf8ff;border:1px solid var(--border);border-radius:16px;padding:16px}.explain-card h2,.example-box h2{font-size:1.05rem;margin:0 0 6px;color:var(--violet)}.example-box{background:#f0fbf9;border-left:5px solid var(--teal);border-radius:15px;padding:17px;margin:18px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:27px 0 14px}.section-title h2{margin:0;color:var(--ink)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.card{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:19px;box-shadow:0 7px 18px rgba(61,37,92,.07);transition:box-shadow .2s,border-color .2s,background .2s,transform .2s;min-height:176px}.card:hover{background:#fbf8ff;border-color:#bca3e5;box-shadow:0 15px 30px rgba(61,37,92,.14);text-decoration:none;transform:translateY(-2px)}.card .tag{display:inline-block;background:#efe7ff;color:#5c21bc;border-radius:999px;padding:4px 9px;font-size:.78rem;font-weight:bold}.card h3{color:var(--ink);margin:12px 0 7px}.card p{color:var(--muted);margin:0}.tool-area{margin-top:22px;padding-top:22px;border-top:1px solid var(--border)}.tool-area>h2{margin-top:0}.tool-form label{display:block;font-weight:bold;margin:12px 0 6px}.tool-form input[type=text],.tool-form input[type=url],.tool-form input[type=number],.tool-form textarea,.tool-form select{width:100%;padding:12px;border:1px solid #d6cde3;border-radius:12px;font:inherit;background:#fff}.tool-form textarea{min-height:180px;resize:vertical}.color-control{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:center;margin:10px 0}.tool-form input[type=color]{appearance:none;-webkit-appearance:none;width:96px;height:58px;padding:4px;border:2px solid #cbbce2;border-radius:14px;background:#fff;cursor:pointer}.tool-form input[type=color]::-webkit-color-swatch-wrapper{padding:0}.tool-form input[type=color]::-webkit-color-swatch{border:0;border-radius:9px}.tool-form input[type=range]{width:100%;accent-color:var(--violet)}.result{background:#261a3e;color:#effffb;border-radius:15px;padding:17px;min-height:70px;white-space:pre-wrap;overflow:auto}.light-result{background:#faf8ff;color:#261a3e;border:1px solid var(--border);border-radius:15px;padding:17px;min-height:70px;white-space:pre-wrap;overflow:auto}.tool-actions{display:flex;gap:10px;flex-wrap:wrap;margin:15px 0}.muted{color:var(--muted)}.ad-box{background:linear-gradient(145deg,#fff8e7,#fff);border:1px dashed #d8aa39;border-radius:18px;padding:20px;text-align:center;position:sticky;top:92px}.site-footer{background:#24173d;color:#f1ebfa;margin-top:32px;padding:36px 0}.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;align-items:center}.footer-grid h2{margin:0 0 6px}.footer-ad{border:1px dashed #91ddd5;border-radius:16px;padding:18px;text-align:center;background:rgba(255,255,255,.06)}.footer-links{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}.footer-links a{color:#fff;border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:8px 11px}.footer-links a:hover{background:#fff;color:#24173d;text-decoration:none}.note{border-left:5px solid var(--coral);background:#fff5f1;padding:15px;border-radius:13px;margin:15px 0}.color-preview{height:130px;border-radius:16px;border:1px solid var(--border);margin-top:12px;box-shadow:inset 0 0 0 4px #fff}.palette-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:15px 0}.swatch{min-height:100px;border-radius:14px;padding:10px;display:flex;align-items:flex-end;font-weight:bold;border:1px solid rgba(0,0,0,.08)}.serp-preview{background:#fff;border:1px solid var(--border);border-radius:14px;padding:17px}.serp-preview h3{color:#1a0dab;font-weight:normal;font-size:1.3rem;margin:4px 0}.serp-preview .url{color:#188038}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{border-bottom:1px solid var(--border);padding:10px;text-align:left}.data-table th{background:#f7f1ff}@media(max-width:900px){.hero-card,.layout,.footer-grid{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.ad-box{position:static}.footer-links{justify-content:flex-start}}@media(max-width:650px){.header-grid{align-items:flex-start;flex-direction:column}.main-nav{justify-content:flex-start}.cards,.explain-grid{grid-template-columns:1fr}.content-box,.tool-box,.hero-card{padding:19px}.color-control{grid-template-columns:1fr}.tool-form input[type=color]{width:100%;height:64px}.palette-grid{grid-template-columns:1fr 1fr}}

/* Hero delle pagine di sezione */
.category-hero{position:relative;overflow:hidden;background:radial-gradient(circle at 88% 18%,rgba(45,212,191,.24),transparent 28%),radial-gradient(circle at 12% 85%,rgba(249,115,96,.18),transparent 25%),linear-gradient(135deg,#24113f 0%,#4c1d95 52%,#087f79 100%);color:#fff;border:0;border-radius:26px;padding:30px;box-shadow:0 18px 38px rgba(42,20,74,.22);margin-bottom:22px}.category-hero:after{content:"</>";position:absolute;right:24px;bottom:-18px;font-size:7rem;font-weight:bold;color:rgba(255,255,255,.07);line-height:1}.category-hero h1{color:#fff;margin:6px 0 9px;font-size:clamp(2rem,3.4vw,3.2rem);line-height:1.08}.category-hero p{color:#f4efff;max-width:780px;margin:7px 0}.category-hero .muted,.category-hero .muted a{color:#dffcf8}.category-hero a{color:#fff;text-decoration:underline;text-underline-offset:3px}
/* Anteprime operative */
.preview-panel{margin:18px 0;padding:20px;border:1px solid var(--border);border-radius:18px;background:linear-gradient(145deg,#fdfcff,#f0fbf9);min-height:150px;display:grid;place-items:center;overflow:auto}.preview-panel h3{margin:0 0 12px}.preview-label{font-weight:bold;color:var(--violet);margin:18px 0 7px}.button-preview{display:inline-block;padding:12px 18px;border-radius:999px;font-weight:bold;text-decoration:none;box-shadow:0 8px 18px rgba(0,0,0,.10);transition:filter .2s,transform .2s}.button-preview:hover{filter:brightness(.92);text-decoration:none;transform:translateY(-1px)}.shadow-stage{width:min(430px,90%);min-height:145px;background:#fff;border-radius:18px;display:grid;place-items:center;padding:25px}.shadow-sample{width:min(260px,90%);min-height:92px;border-radius:16px;background:linear-gradient(135deg,#fff,#f6f1ff);display:grid;place-items:center;font-weight:bold;color:var(--violet);border:1px solid #eee7f7}.generated-table{border-collapse:collapse;width:min(600px,100%);background:#fff}.generated-table th,.generated-table td{padding:9px;border:1px solid #d8cfe6}.generated-table th{background:#eee7ff}
/* Tabelle e strumenti codifica */
.encoding-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.byte-box{background:#faf8ff;border:1px solid var(--border);border-radius:14px;padding:14px;min-height:110px;white-space:pre-wrap;overflow:auto;font-family:Consolas,monospace}.special-toolbar{display:grid;grid-template-columns:1fr auto;gap:10px;margin-bottom:14px}.special-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.special-item{border:1px solid var(--border);background:#fff;border-radius:14px;padding:13px;cursor:pointer;transition:.2s;text-align:left}.special-item:hover,.special-item:focus{border-color:var(--violet2);background:#f8f3ff;box-shadow:0 7px 18px rgba(61,37,92,.10)}.special-char{font-size:1.6rem;font-weight:bold;display:block}.special-code{display:block;font-family:Consolas,monospace;color:var(--muted);font-size:.82rem;word-break:break-all}.status-box{background:#edfdf9;border-left:5px solid var(--teal);border-radius:12px;padding:13px;margin:12px 0}.tool-subtitle{font-size:.95rem;color:var(--muted);margin-top:-5px}
@media(max-width:760px){.encoding-grid,.special-grid{grid-template-columns:1fr}.special-toolbar{grid-template-columns:1fr}.category-hero{padding:23px}.category-hero:after{font-size:5rem}}