/* ===== CSS VARIABLES ===== */
:root {
  --primary: #1a56ff;
  --primary-dark: #0d3fd4;
  --accent: #ff6b2b;
  --bg: #f7f8fc;
  --bg-white: #ffffff;
  --bg-dark: #0d0f1a;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --shadow: 0 4px 24px rgba(26,86,255,0.08);
  --shadow-lg: 0 12px 48px rgba(26,86,255,0.14);
  --radius: 14px;
  --radius-sm: 8px;
  --font: 'Sora', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-w: 1200px;
  --header-h: 68px;
}

/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button{cursor:pointer;font-family:var(--font);border:none;background:none}

/* ===== UTILITIES ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:52px}
.section-header h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800;margin-bottom:10px;letter-spacing:-0.02em}
.section-header p{color:var(--text-muted);font-size:1.1rem}
.gradient-text{background:linear-gradient(135deg,var(--primary),#9b59ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.view-all-wrap{text-align:center;margin-top:40px}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:50px;font-weight:600;font-size:0.95rem;transition:all 0.25s ease;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 20px rgba(26,86,255,0.35)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(26,86,255,0.4)}
.btn-ghost{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:6px 14px;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-size:0.82rem;font-weight:600;transition:background 0.2s}
.btn-sm:hover{background:var(--primary-dark)}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--header-h)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:700}
.logo-icon{color:var(--primary);font-size:1.5rem}
.logo-text strong{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav a{padding:8px 16px;border-radius:50px;font-size:0.92rem;font-weight:500;color:var(--text);transition:all 0.2s}
.main-nav a:hover,.main-nav a.active{background:var(--primary);color:#fff}
.hamburger{display:none;font-size:1.5rem;color:var(--text);padding:8px;border-radius:var(--radius-sm)}

/* ===== HERO ===== */
.hero{position:relative;padding:90px 0 80px;overflow:hidden;background:linear-gradient(160deg,#eef2ff 0%,#f7f8fc 60%)}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.hero-badge{display:inline-block;background:rgba(26,86,255,0.1);color:var(--primary);padding:7px 18px;border-radius:50px;font-size:0.82rem;font-weight:600;letter-spacing:0.05em;margin-bottom:24px;border:1px solid rgba(26,86,255,0.2)}
.hero h1{font-size:clamp(2.4rem,5vw,4rem);font-weight:800;line-height:1.12;letter-spacing:-0.03em;margin-bottom:20px}
.hero-sub{font-size:1.15rem;color:var(--text-muted);max-width:560px;margin:0 auto 36px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:flex;gap:32px;justify-content:center;flex-wrap:wrap}
.stat{text-align:center}
.stat span{display:block;font-size:1.8rem;font-weight:800;color:var(--primary);font-family:var(--font-mono)}
.stat p{font-size:0.82rem;color:var(--text-muted);font-weight:500;margin-top:2px}
.hero-bg-shape{position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(26,86,255,0.07) 0%,transparent 70%);top:-100px;right:-100px;pointer-events:none}

/* ===== CATEGORIES ===== */
.categories-section{background:var(--bg-white)}
.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.cat-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:all 0.25s ease;display:block}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(26,86,255,0.3)}
.cat-card--accent{background:linear-gradient(135deg,#eef2ff,#f0eeff)}
.cat-icon{font-size:2.2rem;margin-bottom:14px}
.cat-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.cat-card p{font-size:0.9rem;color:var(--text-muted);margin-bottom:14px}
.cat-count{font-size:0.78rem;font-weight:700;color:var(--primary);background:rgba(26,86,255,0.1);padding:4px 12px;border-radius:50px}

/* ===== TOOL BOX ===== */
.tool-preview-section{background:linear-gradient(160deg,#0d0f1a 0%,#1a1e3a 100%)}
.tool-preview-section .section-header h2,.tool-preview-section .section-header p{color:#fff}
.tool-preview-section .section-header p{color:rgba(255,255,255,0.6)}
.tool-box{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius);overflow:hidden;backdrop-filter:blur(20px);max-width:860px;margin:0 auto}
.tool-box-header{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:rgba(26,86,255,0.2);color:#fff;font-weight:600;font-size:0.95rem;border-bottom:1px solid rgba(255,255,255,0.1)}
.tool-box textarea{width:100%;padding:20px;background:transparent;border:none;outline:none;font-family:var(--font-mono);font-size:0.92rem;color:#e0e7ff;resize:vertical;min-height:160px}
.tool-box textarea::placeholder{color:rgba(255,255,255,0.3)}
.wc-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,0.08);border-top:1px solid rgba(255,255,255,0.08)}
.wc-stat{text-align:center;padding:16px 10px;background:rgba(255,255,255,0.03)}
.wc-stat strong{display:block;font-size:1.6rem;font-weight:800;color:#fff;font-family:var(--font-mono)}
.wc-stat span{font-size:0.78rem;color:rgba(255,255,255,0.5);margin-top:2px;display:block}

/* ===== POPULAR TOOLS ===== */
.popular-section{background:var(--bg)}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.tool-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:all 0.25s ease;display:block}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(26,86,255,0.3)}
.tool-emoji{font-size:1.8rem;display:block;margin-bottom:10px}
.tool-card h4{font-size:1rem;font-weight:700;margin-bottom:6px}
.tool-card p{font-size:0.85rem;color:var(--text-muted)}

/* ===== WHY SECTION ===== */
.why-section{background:var(--bg-white)}
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:28px}
.why-card{text-align:center;padding:32px 20px}
.why-icon{font-size:2.5rem;margin-bottom:16px}
.why-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px}
.why-card p{font-size:0.9rem;color:var(--text-muted)}

/* ===== BLOG SECTION ===== */
.blog-section{background:var(--bg)}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.blog-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all 0.25s ease}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.blog-img{height:160px;background-size:cover;background-position:center}
.blog-img--1{background:linear-gradient(135deg,#1a56ff,#6c3fff)}
.blog-img--2{background:linear-gradient(135deg,#ff6b2b,#ff3d80)}
.blog-img--3{background:linear-gradient(135deg,#00c896,#1a56ff)}
.blog-content{padding:20px}
.blog-tag{font-size:0.75rem;font-weight:700;color:var(--primary);background:rgba(26,86,255,0.1);padding:3px 10px;border-radius:50px;display:inline-block;margin-bottom:10px}
.blog-content h3{font-size:1rem;font-weight:700;margin-bottom:8px;line-height:1.4}
.blog-content h3 a:hover{color:var(--primary)}
.blog-content p{font-size:0.87rem;color:var(--text-muted);margin-bottom:14px}
.blog-meta{display:flex;gap:14px;font-size:0.8rem;color:var(--text-muted)}

/* ===== FOOTER ===== */
.site-footer{background:var(--bg-dark);color:#cbd5e1;padding:64px 0 0}
.footer-inner{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo-icon{color:#60a5fa}
.footer-brand p{font-size:0.88rem;color:#94a3b8;max-width:260px;line-height:1.7}
.footer-col h4{font-size:0.85rem;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:16px}
.footer-col a{display:block;font-size:0.88rem;color:#94a3b8;margin-bottom:10px;transition:color 0.2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.07);padding:20px 0}
.footer-bottom p{font-size:0.85rem;color:#64748b;text-align:center}
.footer-bottom a{color:#60a5fa}

/* ===== PAGE HEADER ===== */
.page-hero{background:linear-gradient(135deg,#0d0f1a,#1a2040);color:#fff;padding:60px 0;text-align:center}
.page-hero h1{font-size:clamp(1.8rem,4vw,3rem);font-weight:800;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,0.7);font-size:1.05rem;max-width:560px;margin:0 auto}

/* ===== BREADCRUMB ===== */
.breadcrumb{padding:14px 0;border-bottom:1px solid var(--border);font-size:0.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 8px}

/* ===== ABOUT/CONTACT PAGES ===== */
.content-section{max-width:780px;margin:0 auto;padding:60px 24px}
.content-section h1{font-size:2rem;font-weight:800;margin-bottom:20px}
.content-section h2{font-size:1.4rem;font-weight:700;margin:36px 0 12px;color:var(--primary)}
.content-section p{color:var(--text-muted);margin-bottom:16px;line-height:1.8}
.content-section ul{color:var(--text-muted);padding-left:20px;margin-bottom:16px}
.content-section ul li{margin-bottom:8px;line-height:1.7}
.contact-form{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:40px;max-width:620px;margin:0 auto}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-weight:600;font-size:0.9rem;margin-bottom:8px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font);font-size:0.95rem;background:var(--bg);transition:border-color 0.2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,86,255,0.1)}
.form-group textarea{resize:vertical;min-height:120px}
.success-msg{background:#dcfce7;color:#166534;border:1px solid #bbf7d0;border-radius:var(--radius-sm);padding:14px 18px;display:none;margin-top:16px;font-size:0.9rem}

/* ===== TOOLS PAGE ===== */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.filter-btn{padding:8px 20px;border-radius:50px;border:2px solid var(--border);font-size:0.88rem;font-weight:600;color:var(--text-muted);background:var(--bg-white);transition:all 0.2s;cursor:pointer}
.filter-btn.active,.filter-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== TOOL DETAIL PAGE ===== */
.tool-detail{max-width:900px;margin:0 auto;padding:48px 24px}
.tool-detail h1{font-size:1.9rem;font-weight:800;margin-bottom:8px}
.tool-detail .tool-desc{color:var(--text-muted);margin-bottom:32px}
.tool-area{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.tool-area h3{font-weight:700;margin-bottom:14px;font-size:1.05rem}
.tool-area textarea,.tool-area input[type=text],.tool-area input[type=number]{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:0.92rem;background:var(--bg);transition:border-color 0.2s}
.tool-area textarea:focus,.tool-area input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,86,255,0.1)}
.tool-area textarea{resize:vertical;min-height:140px}
.tool-output{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;font-family:var(--font-mono);font-size:0.9rem;min-height:80px;margin-top:14px;white-space:pre-wrap;word-break:break-all}
.tool-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.copy-btn{background:var(--bg-white);border:1px solid var(--border);padding:8px 18px;border-radius:50px;font-size:0.85rem;font-weight:600;transition:all 0.2s}
.copy-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.tool-info{margin-top:48px}
.tool-info h2{font-size:1.3rem;font-weight:700;margin-bottom:12px}
.tool-info p{color:var(--text-muted);line-height:1.8;margin-bottom:12px}

/* ===== BLOG PAGE ===== */
.blog-post-content{max-width:760px;margin:0 auto;padding:48px 24px}
.blog-post-content h1{font-size:2rem;font-weight:800;margin-bottom:16px}
.blog-post-meta{display:flex;gap:16px;color:var(--text-muted);font-size:0.88rem;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.blog-post-content h2{font-size:1.35rem;font-weight:700;margin:32px 0 12px}
.blog-post-content p{color:var(--text-muted);line-height:1.9;margin-bottom:16px}
.blog-post-content ul,.blog-post-content ol{color:var(--text-muted);padding-left:24px;margin-bottom:16px}
.blog-post-content li{margin-bottom:8px;line-height:1.8}
.blog-post-content strong{color:var(--text)}
.blog-post-content blockquote{border-left:4px solid var(--primary);padding:14px 20px;background:rgba(26,86,255,0.05);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:24px 0;font-style:italic;color:var(--text-muted)}

/* ===== PRIVACY/TERMS ===== */
.legal-page{max-width:780px;margin:0 auto;padding:60px 24px}
.legal-page h1{font-size:2rem;font-weight:800;margin-bottom:8px}
.legal-page .last-updated{color:var(--text-muted);font-size:0.88rem;margin-bottom:32px}
.legal-page h2{font-size:1.25rem;font-weight:700;margin:32px 0 10px;color:var(--primary)}
.legal-page p{color:var(--text-muted);line-height:1.85;margin-bottom:14px}
.legal-page ul{color:var(--text-muted);padding-left:20px;margin-bottom:16px}
.legal-page ul li{margin-bottom:8px;line-height:1.75}

/* ===== RESPONSIVE ===== */
@media(max-width:900px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid var(--border);box-shadow:0 8px 24px rgba(0,0,0,0.1)}
  .main-nav.open{display:flex}
  .hamburger{display:block}
  .hero{padding:60px 0 50px}
  .section{padding:56px 0}
  .footer-inner{grid-template-columns:1fr}
  .wc-stats{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:480px){
  .hero-cta{flex-direction:column;align-items:center}
  .hero-stats{gap:20px}
  .wc-stats{grid-template-columns:1fr 1fr}
}