/*
Theme Name: StudySmart Hub Complete
Version: 2.0
Description: Complete student-focused SEO mini-project website for StudySmart Hub.
*/
:root{--navy:#172554;--blue:#4f46e5;--blue2:#3730a3;--text:#172033;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--white:#fff;--max:1160px;--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.65}a{color:var(--blue);text-decoration:none}a:hover{color:var(--blue2)}img{max-width:100%;height:auto}
.container{width:min(92%,var(--max));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;color:var(--navy);font-size:1.08rem;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--blue);color:#fff;font-weight:900;font-size:1.1rem}
.main-nav ul{display:flex;gap:19px;align-items:center;list-style:none;padding:0;margin:0}.main-nav a{font-size:.9rem;font-weight:700;color:#334155}.main-nav a:hover{color:var(--blue)}.nav-toggle{display:none}
.hero{background:linear-gradient(135deg,#eef2ff 0%,#fff 72%);padding:82px 0 72px}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}.eyebrow{display:inline-block;background:#e0e7ff;color:#3730a3;padding:6px 11px;border-radius:999px;font-size:.76rem;font-weight:850;letter-spacing:.03em}
h1{font-size:clamp(2.5rem,5vw,4.35rem);line-height:1.03;letter-spacing:-.045em;margin:18px 0 20px;color:var(--navy)}h2{font-size:clamp(1.7rem,3vw,2.35rem);line-height:1.15;letter-spacing:-.025em;margin:0 0 13px;color:var(--navy)}h3{font-size:1.15rem;line-height:1.3;margin:0 0 8px;color:var(--navy)}.lead{font-size:1.12rem;color:var(--muted);max-width:730px}
.btns{display:flex;gap:11px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:10px;font-weight:800}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue2);color:#fff}.btn-secondary{background:#fff;color:var(--navy);border:1px solid #cbd5e1}
.hero-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:25px;box-shadow:0 20px 55px rgba(23,37,84,.10)}.hero-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}.hero-item:last-child{border-bottom:0}.icon{width:42px;height:42px;border-radius:12px;background:#eef2ff;display:grid;place-items:center;font-weight:900;color:var(--blue);flex:0 0 auto}.hero-item strong{display:block}.hero-item span{font-size:.9rem;color:var(--muted)}
.section{padding:72px 0}.section-alt{background:var(--bg)}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:28px}.section-head p{max-width:650px;color:var(--muted);margin:0}
.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.card p{color:var(--muted);margin:7px 0}.card:hover{box-shadow:0 12px 30px rgba(23,37,84,.07);transform:translateY(-2px);transition:.18s}.tag{display:inline-block;background:#f1f5f9;color:#475569;border-radius:999px;padding:5px 9px;font-size:.72rem;font-weight:850;margin-bottom:11px}.link{display:inline-block;margin-top:14px;font-weight:800}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stat{padding:20px;border:1px solid var(--line);border-radius:15px;background:#fff}.stat strong{display:block;font-size:1.5rem;color:var(--navy)}.stat span{font-size:.88rem;color:var(--muted)}
.page-hero{background:linear-gradient(135deg,#eef2ff,#fff);padding:58px 0 40px}.page-hero h1{font-size:clamp(2.1rem,4vw,3.4rem);margin:14px 0}.content{padding:48px 0 78px;max-width:900px}.content h2{margin-top:38px}.content h3{margin-top:28px}.content p,.content li{color:#4b5563}.comparison{width:100%;border-collapse:collapse;margin:22px 0;background:#fff;border:1px solid var(--line)}.comparison th,.comparison td{padding:13px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}.comparison th{background:#f8fafc;color:var(--navy)}.notice{padding:17px 20px;background:#eef2ff;border-left:4px solid var(--blue);border-radius:8px;margin:25px 0}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:20px 0}.tool{padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff}.tool strong{display:block}.tool span{font-size:.88rem;color:var(--muted)}
.cta{background:var(--navy);color:#fff;border-radius:22px;padding:40px}.cta h2{color:#fff}.cta p{color:#dbe4f0}.site-footer{background:#0b1324;color:#cbd5e1;padding:48px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:35px}.site-footer h3{color:#fff}.site-footer a{color:#cbd5e1}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;font-size:.84rem}
.post-meta{font-size:.84rem;color:#7b8798}.post-card{display:block;color:inherit}.post-card:hover{color:inherit}.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:0;list-style:none}.checklist li{padding:12px 14px;background:#f8fafc;border:1px solid var(--line);border-radius:10px}
@media(max-width:900px){.hero-grid,.grid-3,.tool-grid,.footer-grid{grid-template-columns:1fr}.grid-2,.stats{grid-template-columns:repeat(2,1fr)}.main-nav{display:none;width:100%}.main-nav.open{display:block}.main-nav ul{flex-direction:column;align-items:flex-start;padding:10px 0}.nav-toggle{display:block;background:#fff;border:1px solid var(--line);border-radius:9px;padding:8px 12px}.header-inner{flex-wrap:wrap;padding:10px 0}}
@media(max-width:600px){.grid-2,.stats,.checklist{grid-template-columns:1fr}.hero{padding:55px 0}.section{padding:52px 0}}