/* ===========================================================
   Text Repeat Tool — Professional Stylesheet
   =========================================================== */
:root{
    --primary:#6366f1;
    --primary-dark:#4f46e5;
    --primary-light:#eef2ff;
    --accent:#ec4899;
    --success:#10b981;
    --text:#111827;
    --text-muted:#6b7280;
    --bg:#ffffff;
    --bg-soft:#f9fafb;
    --bg-card:#ffffff;
    --border:#e5e7eb;
    --shadow-sm:0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow:0 4px 12px rgba(0,0,0,.08);
    --shadow-lg:0 20px 40px -10px rgba(99,102,241,.25);
    --radius:12px;
    --radius-lg:16px;
    --transition:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:'Inter','Segoe UI',system-ui,-apple-system,Roboto,sans-serif;
    color:var(--text);
    background:var(--bg-soft);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- HEADER ---------- */
.site-header{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,.9);
    backdrop-filter:saturate(180%) blur(12px);
    -webkit-backdrop-filter:saturate(180%) blur(12px);
    border-bottom:1px solid var(--border);
}
.header-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:70px;
}
.logo{
    display:flex;align-items:center;gap:10px;
    font-weight:800;font-size:20px;color:var(--text);
}
.logo-icon{
    width:38px;height:38px;border-radius:10px;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    display:grid;place-items:center;color:#fff;font-size:18px;
    box-shadow:0 4px 12px rgba(99,102,241,.4);
}
.nav-menu{display:flex;gap:8px;align-items:center;list-style:none}
.nav-menu a{
    color:var(--text);font-weight:500;padding:8px 16px;
    border-radius:8px;font-size:15px;
}
.nav-menu a:hover{background:var(--primary-light);color:var(--primary-dark)}
.nav-menu .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff !important;padding:10px 20px;
}
.nav-menu .btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.mobile-toggle{
    display:none;background:none;border:none;cursor:pointer;
    font-size:24px;color:var(--text);padding:4px 8px;
}

/* ---------- HERO ---------- */
.hero{
    padding:80px 0 60px;
    background:
        radial-gradient(1200px 600px at 10% 0%,rgba(99,102,241,.12),transparent 60%),
        radial-gradient(1000px 500px at 90% 10%,rgba(236,72,153,.12),transparent 60%),
        linear-gradient(180deg,#fff,#f9fafb);
    text-align:center;
}
.hero h1{
    font-size:clamp(32px,5vw,54px);font-weight:800;
    letter-spacing:-.03em;line-height:1.1;margin-bottom:18px;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero p{
    font-size:18px;color:var(--text-muted);max-width:680px;
    margin:0 auto 30px;
}
.hero-badges{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.hero-badges span{
    display:inline-flex;align-items:center;gap:6px;
    background:#fff;border:1px solid var(--border);
    padding:6px 14px;border-radius:100px;font-size:13px;
    color:var(--text-muted);box-shadow:var(--shadow-sm);
}

/* ---------- SECTION ---------- */
.section{padding:60px 0}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{
    font-size:clamp(26px,3.5vw,38px);font-weight:800;
    letter-spacing:-.02em;margin-bottom:10px;color:var(--text);
}
.section-head p{color:var(--text-muted);font-size:16px;max-width:680px;margin:0 auto}

/* ---------- TOOL CARD ---------- */
.tool-card{
    background:var(--bg-card);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:32px;
    box-shadow:var(--shadow);
    max-width:900px;margin:0 auto;
}
.form-group{margin-bottom:20px}
.form-group label{
    display:block;font-weight:600;margin-bottom:8px;
    color:var(--text);font-size:14px;
}
.form-control{
    width:100%;padding:12px 14px;
    border:1.5px solid var(--border);
    border-radius:10px;font-size:15px;
    font-family:inherit;color:var(--text);
    background:#fff;transition:var(--transition);
    resize:vertical;
}
.form-control:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(99,102,241,.12);
}
textarea.form-control{min-height:120px;font-family:'Inter',sans-serif}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.options-row{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:20px}
.check-option{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:14px}
.check-option input{width:18px;height:18px;accent-color:var(--primary)}

.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border:none;border-radius:10px;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:var(--transition);font-family:inherit;
}
.btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-secondary{background:#fff;border:1.5px solid var(--border);color:var(--text)}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}
.btn-success{background:var(--success);color:#fff}
.btn-block{width:100%}
.btn-group{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}

.result-area{
    position:relative;margin-top:20px;
    background:var(--bg-soft);
    border:1.5px solid var(--border);
    border-radius:10px;padding:16px;
    max-height:300px;overflow:auto;
    font-family:'Courier New',monospace;
    font-size:14px;white-space:pre-wrap;word-break:break-word;
}
.result-meta{
    display:flex;justify-content:space-between;align-items:center;
    font-size:13px;color:var(--text-muted);margin-top:10px;
}

/* ---------- ART GALLERY ---------- */
.art-grid{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
    gap:20px;
}
.art-card{
    background:var(--bg-card);
    border:1px solid var(--border);
    border-radius:var(--radius);
    overflow:hidden;
    transition:var(--transition);
    display:flex;flex-direction:column;
    box-shadow:var(--shadow-sm);
}
.art-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-lg);
    border-color:var(--primary);
}
.art-header{
    padding:12px 16px;
    background:linear-gradient(135deg,var(--primary-light),#fff);
    border-bottom:1px solid var(--border);
    display:flex;justify-content:space-between;align-items:center;
    font-size:13px;font-weight:600;color:var(--primary-dark);
}
.art-content{
    padding:16px;
    font-family:'Courier New','Noto Sans Mono',monospace;
    font-size:11px;line-height:1.15;
    white-space:pre;
    overflow:auto;
    max-height:260px;
    flex:1;
    background:#fafafa;
    color:#111;
}
.art-actions{
    padding:10px 14px;
    border-top:1px solid var(--border);
    background:#fff;
    display:flex;gap:8px;
}
.art-actions .btn{padding:8px 14px;font-size:13px;flex:1}

/* ---------- HOW TO USE ---------- */
.howto-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:20px;
    margin-bottom:40px;
}
.howto-step{
    background:#fff;border:1px solid var(--border);
    border-radius:var(--radius);padding:24px;
    position:relative;transition:var(--transition);
}
.howto-step:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.step-num{
    width:40px;height:40px;border-radius:10px;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    color:#fff;font-weight:800;font-size:18px;
    display:grid;place-items:center;margin-bottom:14px;
}
.howto-step h3{font-size:18px;margin-bottom:8px;color:var(--text)}
.howto-step p{color:var(--text-muted);font-size:14px}

.blog-article{
    background:#fff;border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:40px;
    max-width:860px;margin:0 auto;
    box-shadow:var(--shadow-sm);
}
.blog-article h2{font-size:26px;margin:24px 0 12px;color:var(--text)}
.blog-article h3{font-size:20px;margin:20px 0 10px;color:var(--text)}
.blog-article p{margin-bottom:14px;color:#374151}
.blog-article ul,.blog-article ol{margin:0 0 16px 22px;color:#374151}
.blog-article li{margin-bottom:6px}

/* ---------- FAQ ---------- */
.faq-item{
    background:#fff;border:1px solid var(--border);
    border-radius:var(--radius);margin-bottom:12px;overflow:hidden;
}
.faq-q{
    padding:18px 20px;cursor:pointer;font-weight:600;
    display:flex;justify-content:space-between;align-items:center;
    font-size:15px;
}
.faq-q:hover{background:var(--bg-soft)}
.faq-a{padding:0 20px 18px;color:var(--text-muted);display:none;font-size:14px}
.faq-item.active .faq-a{display:block}
.faq-item.active .faq-q{background:var(--primary-light);color:var(--primary-dark)}
.faq-item .chev{transition:transform .2s}
.faq-item.active .chev{transform:rotate(180deg)}

/* ---------- FOOTER ---------- */
.site-footer{
    background:#111827;color:#d1d5db;
    padding:50px 0 20px;margin-top:60px;
}
.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1fr;
    gap:30px;margin-bottom:30px;
}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
.footer-col p{font-size:14px;color:#9ca3af;line-height:1.7}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:#9ca3af;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-logo{
    display:flex;align-items:center;gap:10px;
    font-weight:800;font-size:18px;color:#fff;margin-bottom:12px;
}
.footer-bottom{
    border-top:1px solid #1f2937;padding-top:20px;
    text-align:center;font-size:13px;color:#9ca3af;
}

/* ---------- TOAST ---------- */
.toast{
    position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);
    background:var(--success);color:#fff;padding:12px 24px;
    border-radius:100px;font-weight:600;font-size:14px;
    box-shadow:0 10px 30px rgba(16,185,129,.35);
    transition:transform .35s ease;z-index:1000;
    display:flex;align-items:center;gap:8px;
}
.toast.show{transform:translateX(-50%) translateY(0)}

/* ---------- RESPONSIVE ---------- */
@media (max-width:768px){
    .mobile-toggle{display:block}
    .nav-menu{
        position:absolute;top:70px;left:0;right:0;
        background:#fff;flex-direction:column;align-items:stretch;
        padding:16px;gap:4px;
        border-bottom:1px solid var(--border);
        box-shadow:var(--shadow);
        display:none;
    }
    .nav-menu.show{display:flex}
    .nav-menu a{padding:12px 16px}
    .form-row{grid-template-columns:1fr}
    .tool-card{padding:22px}
    .blog-article{padding:24px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
    .hero{padding:50px 0 40px}
}
@media (max-width:480px){
    .footer-grid{grid-template-columns:1fr}
}