/* =========================================================
   Be Strong And Fit - Main Stylesheet
   Mobile-first, fully responsive, CSS custom properties driven
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }

:root{
  --color-primary: #1db954;
  --color-primary-dark: #169c46;
  --color-secondary: #0f172a;
  --color-accent: #ff7a45;
  --color-text: #1f2937;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-soft: #f6f8fa;
  --color-border: #e5e9ef;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(15,23,42,.06);
  --shadow-md: 0 8px 24px rgba(15,23,42,.10);
  --shadow-lg: 0 20px 50px rgba(15,23,42,.16);
  --container-w: 1200px;
  --transition: .25s ease;
}

html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; height:auto; display:block; }
a{ color: inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4,h5,h6{ font-family: var(--font-heading); font-weight:700; line-height:1.25; margin:0 0 .6em; color: var(--color-secondary); }
p{ margin:0 0 1em; }
button{ font-family: var(--font-body); cursor:pointer; }

.container{ max-width: var(--container-w); margin:0 auto; padding: 0 20px; }

.skip-link{
  position:absolute; left:-9999px; top:0; background:var(--color-primary); color:#fff;
  padding:10px 16px; z-index:2000; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }

/* ---------------- Buttons ---------------- */
.btn{
  display:inline-flex; align-items:center; gap:8px; justify-content:center;
  padding: 13px 28px; border-radius: 50px; font-weight:600; font-size:.95rem;
  border:2px solid transparent; transition: all var(--transition); cursor:pointer;
}
.btn-primary{ background: var(--color-primary); color:#fff; }
.btn-primary:hover{ background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline{ background: transparent; border-color: rgba(255,255,255,.7); color:#fff; }
.btn-outline:hover{ background: rgba(255,255,255,.15); }
.btn-dark{ background: var(--color-secondary); color:#fff; }
.btn-dark:hover{ background:#000; }
.btn-sm{ padding: 8px 18px; font-size:.85rem; }
.btn-block{ width:100%; }

/* ---------------- Header ---------------- */
.site-header{
  position: sticky; top:0; z-index:1000; background: rgba(255,255,255,.97);
  backdrop-filter: blur(8px); border-bottom:1px solid var(--color-border);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; padding: 14px 20px; }
.brand{ display:flex; align-items:center; gap:12px; flex-shrink:0; }
.brand-logo{ height:42px; width:auto; max-width:160px; object-fit:contain; }
.brand-icon{
  width:42px; height:42px; border-radius:12px; background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color:#fff; display:flex; align-items:center; justify-content:center; font-size:1.2rem; flex-shrink:0;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-name{ font-family: var(--font-heading); font-weight:800; font-size:1.15rem; color: var(--color-secondary); }
.brand-tagline{ font-size:.7rem; color: var(--color-text-light); font-weight:500; }

.main-nav ul{ display:flex; gap: 6px; }
.main-nav a{
  display:block; padding: 10px 16px; font-weight:600; font-size:.95rem; color: var(--color-text);
  border-radius: 50px; transition: all var(--transition);
}
.main-nav a:hover{ background: var(--color-bg-soft); color: var(--color-primary); }

.header-actions{ display:flex; align-items:center; gap:14px; }
.search-form{ display:flex; align-items:center; background: var(--color-bg-soft); border-radius:50px; padding:4px 4px 4px 16px; border:1px solid var(--color-border); }
.search-form input{ border:none; background:transparent; outline:none; font-family:var(--font-body); font-size:.9rem; width: 170px; }
.search-form button{ border:none; background: var(--color-primary); color:#fff; width:34px; height:34px; border-radius:50%; display:flex; align-items:center; justify-content:center; }

.nav-toggle{ display:none; flex-direction:column; justify-content:center; gap:5px; width:38px; height:38px; background:none; border:none; }
.nav-toggle span{ width:100%; height:3px; background: var(--color-secondary); border-radius:2px; transition: all var(--transition); }
.nav-toggle.active span:nth-child(1){ transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2){ opacity:0; }
.nav-toggle.active span:nth-child(3){ transform: translateY(-8px) rotate(-45deg); }

.flash-message{ padding: 12px 0; background:#e7f9ee; color:#166534; font-weight:600; text-align:center; }
.flash-error{ background:#fde8e8; color:#991b1b; }

/* ---------------- Hero ---------------- */
.hero{
  position:relative; color:#fff; padding: 110px 0 100px; overflow:hidden;
  background-size: cover; background-position:center; background-color: var(--color-secondary);
}
.hero::before{
  content:''; position:absolute; inset:0;
  background: linear-gradient(135deg, rgba(15,23,42,.88), rgba(15,23,42,.55));
}
.hero-inner{ position:relative; z-index:2; max-width:720px; }
.hero-eyebrow{ display:inline-flex; align-items:center; gap:8px; background: rgba(255,255,255,.15); padding:8px 16px; border-radius:50px; font-size:.8rem; font-weight:700; letter-spacing:.05em; text-transform:uppercase; margin-bottom:22px; }
.hero h1{ color:#fff; font-size: clamp(2rem, 5vw, 3.4rem); margin-bottom:.5em; }
.hero p{ font-size: 1.15rem; color: rgba(255,255,255,.88); max-width:560px; margin-bottom:2em; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

/* ---------------- Section headings ---------------- */
.section{ padding: 70px 0; }
.section-soft{ background: var(--color-bg-soft); }
.section-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:36px; flex-wrap:wrap; }
.section-head .eyebrow{ color: var(--color-primary); font-weight:700; text-transform:uppercase; letter-spacing:.06em; font-size:.8rem; margin-bottom:8px; display:block; }
.section-head h2{ font-size: clamp(1.5rem, 3vw, 2.1rem); margin:0; }
.section-head p{ color: var(--color-text-light); margin:.4em 0 0; max-width:560px; }
.view-all-link{ font-weight:700; color: var(--color-primary); display:inline-flex; align-items:center; gap:6px; white-space:nowrap; }
.view-all-link:hover{ gap:10px; }

/* ---------------- Tabs (Top / Trending / Most Viewed) ---------------- */
.tabs-nav{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:32px; }
.tabs-nav button{
  padding:10px 20px; border-radius:50px; border:2px solid var(--color-border); background:#fff;
  font-weight:700; font-size:.9rem; color: var(--color-text-light); transition: all var(--transition);
  display:flex; align-items:center; gap:8px;
}
.tabs-nav button.active, .tabs-nav button:hover{ border-color: var(--color-primary); color: var(--color-primary); background: rgba(29,185,84,.06); }
.tab-panel{ display:none; }
.tab-panel.active{ display:block; animation: fadeIn .35s ease; }
@keyframes fadeIn{ from{ opacity:0; transform: translateY(6px);} to{opacity:1; transform:none;} }

/* ---------------- Post cards ---------------- */
.post-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap:28px; }
.post-grid.cols-2{ grid-template-columns: repeat(2,1fr); }

.post-card{
  background:#fff; border-radius: var(--radius); overflow:hidden; border:1px solid var(--color-border);
  transition: all var(--transition); display:flex; flex-direction:column; height:100%;
}
.post-card:hover{ box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: transparent; }
.post-card-img{ position:relative; aspect-ratio: 16/10; overflow:hidden; background: var(--color-bg-soft); }
.post-card-img img{ width:100%; height:100%; object-fit:cover; transition: transform .5s ease; }
.post-card:hover .post-card-img img{ transform: scale(1.08); }
.post-card-cat{
  position:absolute; top:14px; left:14px; padding:5px 14px; border-radius:50px; font-size:.72rem; font-weight:700;
  color:#fff; text-transform:uppercase; letter-spacing:.03em; box-shadow: var(--shadow-sm);
}
.post-card-body{ padding: 20px 22px 22px; display:flex; flex-direction:column; flex:1; }
.post-card-meta{ display:flex; align-items:center; gap:14px; font-size:.78rem; color: var(--color-text-light); margin-bottom:10px; flex-wrap:wrap; }
.post-card-meta span{ display:inline-flex; align-items:center; gap:5px; }
.post-card h3{ font-size:1.12rem; margin-bottom:.5em; }
.post-card h3 a:hover{ color: var(--color-primary); }
.post-card p{ color: var(--color-text-light); font-size:.92rem; margin-bottom:14px; flex:1; }
.post-card-footer{ display:flex; align-items:center; justify-content:space-between; padding-top:12px; border-top:1px solid var(--color-border); font-size:.8rem; color: var(--color-text-light); }
.read-more{ font-weight:700; color: var(--color-primary); font-size:.85rem; }

/* Compact list card (used in sidebar / trending list) */
.mini-post-list{ display:flex; flex-direction:column; gap:18px; }
.mini-post{ display:flex; gap:14px; align-items:flex-start; }
.mini-post-rank{ font-family:var(--font-heading); font-weight:800; font-size:1.4rem; color: var(--color-border); width:28px; flex-shrink:0; }
.mini-post-thumb{ width:76px; height:76px; border-radius:10px; overflow:hidden; flex-shrink:0; background:var(--color-bg-soft); }
.mini-post-thumb img{ width:100%; height:100%; object-fit:cover; }
.mini-post-info h4{ font-size:.92rem; margin-bottom:4px; line-height:1.35; }
.mini-post-info h4 a:hover{ color: var(--color-primary); }
.mini-post-info .meta{ font-size:.75rem; color: var(--color-text-light); display:flex; gap:10px; flex-wrap:wrap; }

/* ---------------- Categories grid ---------------- */
.cat-grid{ display:grid; grid-template-columns: repeat(6,1fr); gap:20px; }
.cat-card{
  background:#fff; border:1px solid var(--color-border); border-radius: var(--radius); padding:26px 18px;
  text-align:center; transition: all var(--transition);
}
.cat-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-md); border-color:transparent; }
.cat-icon{ width:56px; height:56px; border-radius:16px; display:flex; align-items:center; justify-content:center; margin:0 auto 14px; color:#fff; font-size:1.4rem; }
.cat-card h3{ font-size:.98rem; margin-bottom:4px; }
.cat-card span{ font-size:.78rem; color: var(--color-text-light); }

/* ---------------- Newsletter / CTA band ---------------- */
.cta-band{ background: linear-gradient(120deg, var(--color-secondary), #1e293b); color:#fff; padding:60px 0; border-radius: var(--radius); }
.cta-inner{ display:flex; align-items:center; justify-content:space-between; gap:30px; flex-wrap:wrap; }
.cta-inner h2{ color:#fff; margin-bottom:.2em; font-size:1.6rem; }
.cta-inner p{ color: rgba(255,255,255,.75); margin:0; }
.cta-form{ display:flex; gap:10px; flex-wrap:wrap; }
.cta-form input{ padding:13px 18px; border-radius:50px; border:none; min-width:240px; font-family: var(--font-body); }

/* ---------------- Single post page ---------------- */
.post-hero{ position:relative; }
.post-hero-img{ width:100%; aspect-ratio: 21/9; object-fit:cover; }
.post-header{ padding: 40px 0 20px; text-align:center; max-width:820px; margin:0 auto; }
.post-header .cat-badge{ display:inline-block; padding:6px 16px; border-radius:50px; color:#fff; font-size:.78rem; font-weight:700; text-transform:uppercase; margin-bottom:16px; }
.post-header h1{ font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom:.5em; }
.post-header .post-meta{ display:flex; align-items:center; justify-content:center; gap:18px; flex-wrap:wrap; color: var(--color-text-light); font-size:.9rem; }
.post-meta span{ display:inline-flex; align-items:center; gap:6px; }

.post-layout{ display:grid; grid-template-columns: 260px 1fr; gap:48px; align-items:flex-start; max-width:1140px; margin:0 auto; padding: 0 20px; }
.post-layout .post-body-col{ min-width:0; }

.toc-box{
  position:sticky; top:100px; background: var(--color-bg-soft); border:1px solid var(--color-border);
  border-radius: var(--radius); padding: 22px 20px;
}
.toc-box h4{ font-size:.85rem; text-transform:uppercase; letter-spacing:.06em; color: var(--color-text-light); margin-bottom:14px; display:flex; align-items:center; gap:8px; }
.toc-list li{ margin-bottom:2px; }
.toc-list a{
  display:block; padding: 7px 10px; font-size:.88rem; border-radius:8px; color: var(--color-text);
  border-left: 3px solid transparent; transition: all var(--transition);
}
.toc-list a:hover, .toc-list a.active{ background:#fff; color: var(--color-primary); border-left-color: var(--color-primary); }
.toc-list .toc-h3{ padding-left:22px; font-size:.83rem; }

.post-summary{ background: #fff7ed; border:1px solid #fed7aa; border-radius: var(--radius-sm); padding:18px 20px; margin: 24px 0; font-size:.95rem; }
.post-summary strong{ color: var(--color-accent); }

.post-content{ font-size:1.05rem; color:#374151; }
.post-content h2{ margin-top:2em; font-size:1.5rem; scroll-margin-top:100px; }
.post-content h3{ margin-top:1.6em; font-size:1.22rem; scroll-margin-top:100px; }
.post-content p{ margin-bottom:1.3em; }
.post-content img{ border-radius: var(--radius-sm); margin: 1.4em 0; width:100%; height:auto; }
.post-content video, .post-content iframe{ width:100%; border-radius: var(--radius-sm); margin:1.4em 0; aspect-ratio:16/9; }
.post-content ul, .post-content ol{ margin: 0 0 1.3em 1.3em; }
.post-content li{ margin-bottom:.5em; }
.post-content blockquote{ border-left:4px solid var(--color-primary); padding: 4px 20px; color: var(--color-text-light); font-style:italic; margin: 1.5em 0; }
.post-content a{ color: var(--color-primary); text-decoration:underline; }

.post-share{ display:flex; align-items:center; gap:12px; margin: 40px 0; padding: 20px 0; border-top:1px solid var(--color-border); border-bottom:1px solid var(--color-border); }
.post-share span{ font-weight:700; font-size:.9rem; color: var(--color-text-light); }
.share-btn{ width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center; background: var(--color-bg-soft); transition: all var(--transition); }
.share-btn:hover{ background: var(--color-primary); color:#fff; }

.related-posts{ margin-top:50px; }
.related-posts h3{ font-size:1.3rem; margin-bottom:22px; }

/* ---------------- Sidebar widgets (category/search pages) ---------------- */
.page-layout{ display:grid; grid-template-columns: 1fr 320px; gap:40px; }
.widget{ background:#fff; border:1px solid var(--color-border); border-radius: var(--radius); padding:22px; margin-bottom:26px; }
.widget h4{ font-size:1rem; margin-bottom:16px; padding-bottom:12px; border-bottom:2px solid var(--color-bg-soft); }
.widget-cat-list li{ margin-bottom:4px; }
.widget-cat-list a{ display:flex; justify-content:space-between; padding:9px 4px; font-size:.92rem; border-radius:8px; }
.widget-cat-list a:hover{ color: var(--color-primary); padding-left:10px; }
.widget-cat-list .count{ color: var(--color-text-light); font-size:.8rem; }

/* ---------------- Pagination ---------------- */
.pagination{ display:flex; justify-content:center; gap:8px; margin-top:44px; flex-wrap:wrap; }
.pagination a, .pagination span{
  min-width:42px; height:42px; padding:0 8px; border-radius:10px; display:flex; align-items:center; justify-content:center;
  border:1px solid var(--color-border); font-weight:600; font-size:.9rem; color: var(--color-text);
}
.pagination a:hover{ border-color: var(--color-primary); color: var(--color-primary); }
.pagination .current{ background: var(--color-primary); color:#fff; border-color: var(--color-primary); }

/* ---------------- Static pages (About/Privacy/Contact) ---------------- */
.page-hero{ background: var(--color-bg-soft); padding: 60px 0; text-align:center; }
.page-hero h1{ font-size: clamp(1.8rem, 3.6vw, 2.4rem); margin:0; }
.page-content{ max-width: 820px; margin: 0 auto; padding: 60px 20px; font-size:1.05rem; }
.page-content h2{ margin-top:1.4em; }
.page-content h3{ margin-top:1.2em; }

.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:44px; max-width:1040px; margin:0 auto; padding: 60px 20px; }
.contact-info-item{ display:flex; gap:16px; margin-bottom:26px; align-items:flex-start; }
.contact-info-item i{ width:46px; height:46px; border-radius:12px; background: rgba(29,185,84,.1); color: var(--color-primary); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.contact-info-item h4{ margin-bottom:2px; font-size:.98rem; }
.contact-info-item p{ margin:0; color: var(--color-text-light); font-size:.92rem; }

.form-group{ margin-bottom:18px; }
.form-group label{ display:block; font-weight:600; font-size:.88rem; margin-bottom:7px; }
.form-group input, .form-group textarea, .form-group select{
  width:100%; padding:13px 16px; border-radius:10px; border:1px solid var(--color-border); font-family:var(--font-body);
  font-size:.95rem; outline:none; transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus{ border-color: var(--color-primary); }
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap:16px; }
.form-note{ font-size:.85rem; color: var(--color-text-light); margin-top:10px; }

/* ---------------- Footer ---------------- */
.site-footer{ background: var(--color-secondary); color: rgba(255,255,255,.75); padding: 64px 0 0; margin-top: 80px; }
.footer-grid{ display:grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap:40px; padding-bottom:44px; }
.footer-col h4{ color:#fff; font-size:.95rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:18px; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col ul a:hover{ color: var(--color-primary); }
.brand-footer{ margin-bottom:14px; }
.brand-footer .brand-name{ color:#fff; }
.footer-about p{ font-size:.9rem; }
.social-links{ display:flex; gap:10px; margin-top:16px; }
.social-links a{ width:38px; height:38px; border-radius:50%; background: rgba(255,255,255,.08); display:flex; align-items:center; justify-content:center; transition: all var(--transition); }
.social-links a:hover{ background: var(--color-primary); color:#fff; }
.newsletter-form{ display:flex; gap:8px; margin-bottom:10px; }
.newsletter-form input{ flex:1; padding:11px 14px; border-radius:8px; border:none; font-family:var(--font-body); min-width:0; }
.newsletter-form button{ background: var(--color-primary); color:#fff; border:none; width:42px; border-radius:8px; }
.newsletter-msg{ font-size:.82rem; color: var(--color-primary); min-height:1em; }
.footer-contact{ font-size:.88rem; margin-top:8px; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.1); padding: 20px 0; text-align:center; font-size:.85rem; }

.back-to-top{
  position:fixed; bottom:26px; right:26px; width:46px; height:46px; border-radius:50%; background: var(--color-primary);
  color:#fff; border:none; display:flex; align-items:center; justify-content:center; box-shadow: var(--shadow-md);
  opacity:0; visibility:hidden; transform: translateY(10px); transition: all var(--transition); z-index:900;
}
.back-to-top.show{ opacity:1; visibility:visible; transform:none; }

/* ---------------- Reading progress ---------------- */
.read-progress-track{ position:sticky; top:73px; height:3px; background: var(--color-border); z-index:998; }
.read-progress-bar{ height:100%; width:0; background: var(--color-primary); transition: width .1s linear; }

/* ---------------- Breadcrumb ---------------- */
.breadcrumb{ font-size:.85rem; color: var(--color-text-light); padding: 18px 0; }
.breadcrumb a:hover{ color: var(--color-primary); }
.breadcrumb .sep{ margin: 0 6px; }

/* ---------------- Empty state ---------------- */
.empty-state{ text-align:center; padding: 60px 20px; color: var(--color-text-light); }
.empty-state i{ font-size:2.4rem; margin-bottom:16px; color: var(--color-border); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1080px){
  .cat-grid{ grid-template-columns: repeat(3,1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .post-layout{ grid-template-columns: 220px 1fr; gap:32px; }
}

@media (max-width: 960px){
  .post-grid{ grid-template-columns: repeat(2,1fr); }
  .page-layout{ grid-template-columns: 1fr; }
  .post-layout{ grid-template-columns: 1fr; }
  .toc-box{ position:static; margin-bottom:30px; }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 820px){
  .main-nav{
    position:fixed; top:73px; left:0; right:0; bottom:0; background:#fff; padding: 20px;
    transform: translateX(100%); transition: transform var(--transition); overflow-y:auto; z-index:999;
  }
  .main-nav.open{ transform:none; }
  .main-nav ul{ flex-direction:column; gap:4px; }
  .main-nav a{ padding:14px 16px; font-size:1.05rem; }
  .nav-toggle{ display:flex; }
  .search-form{ display:none; }
  .header-actions{ gap:8px; }
  .cta-inner{ flex-direction:column; text-align:center; }
  .cta-form{ width:100%; }
  .cta-form input{ flex:1; }
}

@media (max-width: 680px){
  .post-grid{ grid-template-columns: 1fr; }
  .cat-grid{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: 1fr; gap:32px; }
  .hero{ padding: 80px 0 70px; text-align:left; }
  .section{ padding: 50px 0; }
  .form-row{ grid-template-columns: 1fr; }
  .mini-post-thumb{ width:64px; height:64px; }
}

@media (max-width: 480px){
  .header-inner{ padding: 12px 16px; }
  .brand-tagline{ display:none; }
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-actions .btn{ width:100%; }
  .tabs-nav{ overflow-x:auto; flex-wrap:nowrap; padding-bottom:4px; }
  .tabs-nav button{ flex-shrink:0; }
}