/* Smart2Grid - Neo-Minimalism / Digital Grid */
:root{
  --bg:#0F172A;--bg2:#1E293B;--panel:rgba(30,41,59,.6);--border:#334155;
  --text:#E2E8F0;--muted:#94A3B8;--accent:#3B82F6;--accent2:#2563EB;--mint:#5EEAD4;
  --radius:14px;--shadow:0 10px 40px rgba(37,99,235,.15);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--text);font-family:'Inter',-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
body{background-image:radial-gradient(circle at 20% 10%,rgba(37,99,235,.12),transparent 40%),radial-gradient(circle at 80% 90%,rgba(94,234,212,.08),transparent 40%),linear-gradient(180deg,#0F172A,#0B1120);min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--mint)}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;letter-spacing:-.02em;color:#F8FAFC;line-height:1.2}
h1{font-size:clamp(2rem,5vw,3.5rem)}
h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:1rem}
h3{font-size:1.25rem;margin-bottom:.5rem}
p{color:var(--muted);margin-bottom:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,23,42,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:#F8FAFC;font-size:1.15rem;font-family:'Space Grotesk',sans-serif}
.logo-mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--mint));display:grid;place-items:center;color:#0F172A;font-weight:900;box-shadow:0 0 18px rgba(59,130,246,.5)}
.nav-links{display:flex;gap:6px;flex-wrap:wrap}
.nav-links a{color:var(--text);padding:8px 14px;border-radius:8px;font-size:.92rem;font-weight:500;transition:all .2s}
.nav-links a:hover,.nav-links a.active{background:rgba(59,130,246,.12);color:var(--mint)}
.menu-toggle{display:none;background:none;border:1px solid var(--border);color:#fff;padding:8px 12px;border-radius:8px;cursor:pointer}
@media(max-width:860px){
  .menu-toggle{display:block}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#0F172A;border-bottom:1px solid var(--border);flex-direction:column;padding:12px 24px}
  .nav-links.open{display:flex}
}

/* Hero */
.hero{padding:80px 0 60px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr}}
.eyebrow{display:inline-block;padding:6px 14px;border:1px solid var(--border);border-radius:999px;font-size:.78rem;color:var(--mint);letter-spacing:.12em;text-transform:uppercase;margin-bottom:20px}
.hero h1 span{background:linear-gradient(90deg,var(--accent),var(--mint));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.1rem;color:#CBD5E1;margin:18px 0 28px;max-width:560px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:10px;font-weight:600;font-size:.95rem;transition:all .2s;border:1px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff;box-shadow:0 8px 24px rgba(37,99,235,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(37,99,235,.5);color:#fff}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--mint);color:var(--mint)}

/* Phone mockup */
.phone{position:relative;width:280px;height:560px;border:2px solid var(--border);border-radius:36px;background:#0B1120;margin:0 auto;padding:14px;box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 60px rgba(59,130,246,.25)}
.phone::before{content:"";position:absolute;top:14px;left:50%;transform:translateX(-50%);width:90px;height:18px;background:#000;border-radius:0 0 14px 14px}
.phone-screen{width:100%;height:100%;border-radius:24px;background:linear-gradient(160deg,#0F172A,#1E293B);padding:36px 14px 14px;display:flex;flex-direction:column;gap:10px}
.sudoku-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:6px;overflow:hidden;aspect-ratio:1}
.sudoku-grid div{background:#0F172A;display:grid;place-items:center;color:#CBD5E1;font-size:.75rem;font-weight:600;font-family:'Space Grotesk',sans-serif}
.sudoku-grid div.given{color:var(--mint)}
.sudoku-grid div.user{color:var(--accent)}
.sudoku-grid div.sel{background:rgba(59,130,246,.2)}

/* Sections */
section{padding:70px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 50px}
.section-head .eyebrow{margin-bottom:14px}

/* Rating */
.rating-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:30px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;justify-content:center;margin:30px 0}
.score{font-size:3.5rem;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--mint));-webkit-background-clip:text;color:transparent;font-family:'Space Grotesk',sans-serif;line-height:1}
.stars{color:#FBBF24;font-size:1.4rem;letter-spacing:.1em}
.rating-meta{color:var(--muted);font-size:.9rem}

/* Cards grid */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.grid-3,.grid-4{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}
@media(max-width:1100px){.grid-4{grid-template-columns:repeat(2,1fr)}}

.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:all .25s;backdrop-filter:blur(8px)}
.card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 16px 40px rgba(37,99,235,.18)}
.card .icon{width:48px;height:48px;border-radius:10px;background:linear-gradient(135deg,rgba(59,130,246,.2),rgba(94,234,212,.1));border:1px solid var(--border);display:grid;place-items:center;color:var(--mint);margin-bottom:16px;font-size:1.4rem}

/* Media placeholders - inline SVG/gradient art */
.media{aspect-ratio:16/10;border-radius:12px;border:1px solid var(--border);position:relative;overflow:hidden;display:grid;place-items:center;background:linear-gradient(135deg,#1E293B,#0F172A)}
.media.m1{background:linear-gradient(135deg,#1e3a8a,#0f172a)}
.media.m2{background:linear-gradient(135deg,#0f766e,#0f172a)}
.media.m3{background:linear-gradient(135deg,#7c3aed,#0f172a)}
.media.m4{background:linear-gradient(135deg,#0369a1,#0f172a)}
.media.m5{background:linear-gradient(135deg,#be185d,#0f172a)}
.media.m6{background:linear-gradient(135deg,#15803d,#0f172a)}
.media.m7{background:linear-gradient(135deg,#b45309,#0f172a)}
.media.m8{background:linear-gradient(135deg,#1e40af,#0f172a)}
.media.m9{background:linear-gradient(135deg,#831843,#0f172a)}
.media.m10{background:linear-gradient(135deg,#065f46,#0f172a)}
.media.m11{background:linear-gradient(135deg,#5b21b6,#0f172a)}
.media.m12{background:linear-gradient(135deg,#9a3412,#0f172a)}
.media svg{width:55%;height:55%;opacity:.85;filter:drop-shadow(0 4px 20px rgba(59,130,246,.4))}
.media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;transition:transform .8s ease}
.media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,23,42,0) 40%,rgba(15,23,42,.55) 100%);pointer-events:none}
.article-card:hover .media img{transform:scale(1.04)}

/* Article card */
.article-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .25s;display:flex;flex-direction:column}
.article-card:hover{transform:translateY(-4px);border-color:var(--accent)}
.article-card .media{border-radius:0;border:none;border-bottom:1px solid var(--border)}
.article-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.article-card .meta{font-size:.78rem;color:var(--mint);text-transform:uppercase;letter-spacing:.1em}
.article-card h3{margin:0}
.article-card .excerpt{font-size:.92rem}
.article-card .read{margin-top:auto;font-weight:600;color:var(--accent)}

/* Pros/Cons */
.pc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:700px){.pc-grid{grid-template-columns:1fr}}
.pc{padding:24px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel)}
.pc.pros{border-left:3px solid var(--mint)}
.pc.cons{border-left:3px solid #f87171}
.pc ul{list-style:none;padding:0}
.pc li{padding:10px 0;border-bottom:1px dashed var(--border);color:#CBD5E1}
.pc li:last-child{border:none}
.pc li::before{content:"›";color:var(--accent);margin-right:8px;font-weight:700}

/* Score breakdown bars */
.bar-row{margin:18px 0}
.bar-label{display:flex;justify-content:space-between;font-size:.92rem;margin-bottom:6px;color:#E2E8F0}
.bar-label b{color:var(--mint);font-family:'Space Grotesk',sans-serif}
.bar{height:8px;background:#0B1120;border-radius:99px;overflow:hidden;border:1px solid var(--border)}
.bar span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--mint));border-radius:99px;box-shadow:0 0 14px rgba(59,130,246,.5)}

/* FAQ accordion */
.faq-item{border:1px solid var(--border);border-radius:12px;margin-bottom:14px;background:var(--panel);overflow:hidden}
.faq-q{padding:18px 22px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#F8FAFC}
.faq-q:hover{color:var(--mint)}
.faq-a{padding:0 22px;max-height:0;overflow:hidden;transition:all .3s;color:var(--muted)}
.faq-item.open .faq-a{padding:0 22px 18px;max-height:500px}
.faq-q .chev{transition:transform .25s}
.faq-item.open .faq-q .chev{transform:rotate(180deg)}

/* Forms */
.form-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px}
@media(max-width:860px){.form-grid{grid-template-columns:1fr}}
.field{margin-bottom:16px}
.field label{display:block;font-size:.88rem;margin-bottom:6px;color:#CBD5E1}
.field input,.field textarea{width:100%;padding:12px 14px;background:#0B1120;border:1px solid var(--border);border-radius:10px;color:#F8FAFC;font-family:inherit;font-size:.95rem;transition:border-color .2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.info-box{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.info-box h4{color:var(--mint);margin-bottom:14px;font-size:1rem;text-transform:uppercase;letter-spacing:.08em}
.info-box p{font-size:.92rem;line-height:1.7}

/* Article body */
.article-body{max-width:780px;margin:40px auto}
.article-body h2{margin:34px 0 14px}
.article-body h3{margin:24px 0 10px;color:#F8FAFC}
.article-body p{font-size:1.02rem;color:#CBD5E1;line-height:1.8}
.article-body ul{margin:14px 0 20px 22px;color:#CBD5E1}
.article-body li{margin-bottom:8px}
.article-hero{padding:60px 0 20px;text-align:center}
.article-hero .meta{color:var(--mint);font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.gallery{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.gallery{grid-template-columns:1fr}}

/* Footer */
.site-footer{margin-top:60px;border-top:1px solid var(--border);background:#0B1120;padding:50px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:500px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h5{color:#F8FAFC;font-size:.95rem;margin-bottom:14px;font-family:'Space Grotesk',sans-serif}
.foot-grid a,.foot-grid p{color:var(--muted);font-size:.88rem;margin-bottom:8px;display:block}
.foot-grid a:hover{color:var(--mint)}
.copyright{border-top:1px solid var(--border);padding-top:20px;text-align:center;font-size:.82rem;color:var(--muted)}

/* Cookie */
.cookie{position:fixed;bottom:20px;left:20px;right:20px;max-width:560px;margin:0 auto;background:#0B1120;border:1px solid var(--border);border-radius:14px;padding:20px;z-index:200;box-shadow:0 20px 50px rgba(0,0,0,.6);display:none}
.cookie.show{display:block}
.cookie h4{margin-bottom:8px;font-size:1rem;color:#F8FAFC}
.cookie p{font-size:.85rem;margin-bottom:14px}
.cookie-actions{display:flex;gap:10px;flex-wrap:wrap}
.cookie-actions button{flex:1;min-width:90px;padding:10px;border-radius:8px;font-weight:600;font-size:.85rem;cursor:pointer;border:1px solid var(--border);background:transparent;color:#F8FAFC;transition:all .2s}
.cookie-actions button.primary{background:linear-gradient(135deg,var(--accent2),var(--accent));border-color:transparent}
.cookie-actions button:hover{border-color:var(--mint)}

.alert{padding:14px 18px;border-radius:10px;background:rgba(94,234,212,.1);border:1px solid var(--mint);color:var(--mint);margin-top:14px;display:none}
.alert.show{display:block}