/* ═══════════════════════════════════════════════
   LEARNTHISFAST.COM — Main Stylesheet
   ═══════════════════════════════════════════════ */

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root {
  --white:        #ffffff;
  --off-white:    #f8f8f6;
  --ink:          #111110;
  --ink-light:    #444442;
  --muted:        #888885;
  --rule:         #e8e8e4;
  --accent:       #e8451a;
  --accent-hover: #c73a15;
  --accent-light: #fff0ec;
  --success:      #22c55e;
  --warn:         #f59e0b;
  --max:          1180px;
  --article-max:  740px;
  --radius:       6px;
  --shadow:       0 2px 16px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.12);
}

html { scroll-behavior:smooth; font-size:16px; }
body { font-family:'Mulish',sans-serif; background:var(--white); color:var(--ink); line-height:1.7; -webkit-font-smoothing:antialiased; }
a { color:var(--accent); text-decoration:none; }
a:hover { text-decoration:underline; }
img { display:block; max-width:100%; }

/* ── TOPBAR ── */
.topbar { background:var(--ink); color:#ccc; font-size:12px; text-align:center; padding:7px 16px; }
.topbar a { color:var(--accent); font-weight:700; }
.topbar a:hover { color:#fff; }

/* ── NAV ── */
.site-nav { position:sticky; top:0; z-index:200; background:rgba(255,255,255,0.97); backdrop-filter:blur(10px); border-bottom:1px solid var(--rule); }
.nav-inner { max-width:var(--max); margin:0 auto; padding:0 24px; height:62px; display:flex; align-items:center; gap:24px; }
.logo { font-family:'Playfair Display',serif; font-size:22px; font-weight:900; color:var(--ink); white-space:nowrap; text-decoration:none; }
.logo span { color:var(--accent); }
.logo:hover { text-decoration:none; }
.nav-links { display:flex; gap:4px; list-style:none; flex:1; }
.nav-links a { font-size:13px; font-weight:600; color:var(--ink-light); padding:6px 10px; border-radius:4px; transition:all 0.15s; white-space:nowrap; text-decoration:none; }
.nav-links a:hover, .nav-links a.active { background:var(--accent-light); color:var(--accent); }
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:4px; }
.nav-toggle span { display:block; width:22px; height:2px; background:var(--ink); border-radius:2px; transition:all 0.2s; }
.nav-search-wrap { margin-left:auto; }
.nav-search-form { display:flex; align-items:center; background:var(--off-white); border:1px solid var(--rule); border-radius:100px; overflow:hidden; transition:border-color 0.2s; }
.nav-search-form:focus-within { border-color:var(--accent); }
.nav-search-form input { border:none; outline:none; background:transparent; padding:7px 14px; font-family:'Mulish',sans-serif; font-size:13px; width:180px; color:var(--ink); }
.nav-search-form button { background:none; border:none; padding:7px 12px; cursor:pointer; color:var(--muted); display:flex; align-items:center; }
.nav-search-form button:hover { color:var(--accent); }

/* ── HERO ── */
.hero { background:var(--off-white); border-bottom:1px solid var(--rule); padding:72px 24px 64px; text-align:center; position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-80px; left:50%; transform:translateX(-50%); width:700px; height:700px; background:radial-gradient(circle,rgba(232,69,26,0.07) 0%,transparent 65%); pointer-events:none; }
.hero-eyebrow { display:inline-block; font-size:11px; font-weight:800; letter-spacing:3px; text-transform:uppercase; color:var(--accent); margin-bottom:18px; }
.hero h1 { font-family:'Playfair Display',serif; font-size:clamp(38px,5.5vw,72px); font-weight:900; line-height:1.07; letter-spacing:-1.5px; margin-bottom:18px; }
.hero h1 em { font-style:italic; color:var(--accent); }
.hero-sub { font-size:18px; font-weight:300; color:var(--ink-light); max-width:480px; margin:0 auto 36px; }
.hero-search { display:flex; max-width:560px; margin:0 auto; border:2.5px solid var(--ink); border-radius:100px; overflow:hidden; background:var(--white); transition:border-color 0.2s,box-shadow 0.2s; }
.hero-search:focus-within { border-color:var(--accent); box-shadow:0 0 0 4px rgba(232,69,26,0.1); }
.hero-search input { flex:1; border:none; outline:none; padding:15px 22px; font-family:'Mulish',sans-serif; font-size:16px; background:transparent; color:var(--ink); }
.hero-search input::placeholder { color:var(--muted); }
.hero-search button { background:var(--ink); color:var(--white); border:none; padding:15px 26px; font-family:'Mulish',sans-serif; font-size:13px; font-weight:700; letter-spacing:0.5px; text-transform:uppercase; cursor:pointer; transition:background 0.2s; white-space:nowrap; }
.hero-search button:hover { background:var(--accent); }
.hero-tags { display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin-top:20px; }
.hero-tag { font-size:13px; font-weight:600; color:var(--ink-light); background:var(--white); border:1px solid var(--rule); border-radius:100px; padding:6px 16px; cursor:pointer; transition:all 0.2s; text-decoration:none; }
.hero-tag:hover { border-color:var(--accent); color:var(--accent); text-decoration:none; }

/* ── LAYOUT ── */
.container { max-width:var(--max); margin:0 auto; padding:0 24px; }
.section-header { display:flex; align-items:baseline; justify-content:space-between; padding:52px 0 24px; border-bottom:2px solid var(--ink); margin-bottom:32px; }
.section-title { font-family:'Playfair Display',serif; font-size:28px; font-weight:700; letter-spacing:-0.5px; }
.section-link { font-size:13px; font-weight:700; letter-spacing:0.5px; text-transform:uppercase; color:var(--accent); display:flex; align-items:center; gap:4px; transition:gap 0.2s; text-decoration:none; }
.section-link:hover { gap:10px; text-decoration:none; }

/* ── CARDS ── */
.card { background:var(--white); cursor:pointer; transition:transform 0.2s; }
.card:hover { transform:translateY(-2px); }
.card:hover .card-title { color:var(--accent); }
.card-img { overflow:hidden; background:var(--off-white); border-radius:var(--radius) var(--radius) 0 0; aspect-ratio:16/10; display:flex; align-items:center; justify-content:center; font-size:52px; }
.card-img img { width:100%; height:100%; object-fit:cover; transition:transform 0.5s; }
.card:hover .card-img img { transform:scale(1.04); }
.card-body { padding:18px 0 24px; }
.card-tag { display:inline-block; font-size:10px; font-weight:800; letter-spacing:2px; text-transform:uppercase; color:var(--accent); margin-bottom:9px; }
.card-title { font-family:'Playfair Display',serif; font-size:19px; font-weight:700; line-height:1.3; letter-spacing:-0.2px; color:var(--ink); margin-bottom:9px; transition:color 0.2s; }
.card-excerpt { font-size:14px; color:var(--ink-light); line-height:1.65; font-weight:300; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.card-meta { display:flex; align-items:center; gap:10px; margin-top:12px; font-size:12px; color:var(--muted); font-weight:500; }
.meta-dot { width:3px; height:3px; border-radius:50%; background:var(--rule); flex-shrink:0; }
.card a { text-decoration:none; color:inherit; display:block; }

/* Featured grid */
.featured-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:2px; margin-bottom:2px; }
.card-large .card-img { aspect-ratio:16/9; font-size:72px; }
.card-large .card-title { font-size:26px; }

/* Article grid */
.article-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:28px 20px; margin-bottom:48px; }
.article-grid .card-img { aspect-ratio:3/2; font-size:40px; }
.article-grid .card-title { font-size:16px; }
.article-grid .card-body { padding:12px 0 16px; }

/* ── CATEGORIES STRIP ── */
.cat-strip { background:var(--ink); padding:40px 0; margin:56px 0 0; }
.cat-strip-inner { max-width:var(--max); margin:0 auto; padding:0 24px; }
.cat-strip-label { font-size:11px; font-weight:700; letter-spacing:3px; text-transform:uppercase; color:var(--muted); margin-bottom:18px; }
.cat-list { display:flex; flex-wrap:wrap; gap:10px; }
.cat-pill { font-size:13px; font-weight:600; color:var(--white); background:rgba(255,255,255,0.07); border:1px solid rgba(255,255,255,0.12); border-radius:100px; padding:9px 20px; cursor:pointer; transition:all 0.2s; display:flex; align-items:center; gap:8px; text-decoration:none; }
.cat-pill:hover { background:var(--accent); border-color:var(--accent); text-decoration:none; }

/* ── TRENDING LIST ── */
.trending-grid { display:grid; grid-template-columns:1fr 1fr; gap:0; margin-bottom:56px; }
.trending-item { display:flex; align-items:flex-start; gap:16px; padding:20px 0; border-bottom:1px solid var(--rule); cursor:pointer; text-decoration:none; color:inherit; }
.trending-item:nth-child(odd) { padding-right:36px; }
.trending-item:nth-child(even) { padding-left:36px; border-left:1px solid var(--rule); }
.trending-item:hover .trending-title { color:var(--accent); }
.trending-item:hover .trending-num { color:var(--accent); }
.trending-num { font-family:'Playfair Display',serif; font-size:30px; font-weight:900; color:var(--rule); line-height:1; flex-shrink:0; width:40px; transition:color 0.2s; }
.trending-tag { font-size:10px; font-weight:800; letter-spacing:2px; text-transform:uppercase; color:var(--accent); margin-bottom:5px; }
.trending-title { font-family:'Playfair Display',serif; font-size:17px; font-weight:700; line-height:1.35; color:var(--ink); transition:color 0.2s; }
.trending-time { font-size:12px; color:var(--muted); margin-top:5px; }

/* ── NEWSLETTER ── */
.newsletter { background:var(--accent-light); border:1px solid rgba(232,69,26,0.15); border-radius:8px; padding:48px 40px; text-align:center; margin:0 0 64px; }
.newsletter-eyebrow { font-size:11px; font-weight:800; letter-spacing:2.5px; text-transform:uppercase; color:var(--accent); margin-bottom:12px; }
.newsletter h2 { font-family:'Playfair Display',serif; font-size:30px; font-weight:700; letter-spacing:-0.5px; margin-bottom:10px; }
.newsletter p { font-size:15px; color:var(--ink-light); font-weight:300; margin-bottom:24px; }
.newsletter-form { display:flex; max-width:420px; margin:0 auto; border:2px solid var(--accent); border-radius:100px; overflow:hidden; background:var(--white); }
.newsletter-form input { flex:1; border:none; outline:none; padding:12px 20px; font-family:'Mulish',sans-serif; font-size:14px; background:transparent; min-width:0; }
.newsletter-form button { background:var(--accent); color:var(--white); border:none; padding:12px 22px; font-family:'Mulish',sans-serif; font-size:13px; font-weight:700; letter-spacing:0.5px; text-transform:uppercase; cursor:pointer; transition:background 0.2s; white-space:nowrap; }
.newsletter-form button:hover { background:var(--accent-hover); }

/* ── CATEGORY PAGE ── */
.cat-page-hero { padding:48px 0 36px; border-bottom:1px solid var(--rule); margin-bottom:40px; }
.cat-page-hero .cat-emoji { font-size:48px; margin-bottom:12px; }
.cat-page-hero h1 { font-family:'Playfair Display',serif; font-size:44px; font-weight:900; letter-spacing:-1px; margin-bottom:10px; }
.cat-page-hero p { font-size:17px; color:var(--ink-light); font-weight:300; }
.cat-article-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:32px 24px; margin-bottom:64px; }
.cat-article-grid .card-img { font-size:48px; }

/* ── ARTICLE PAGE ── */
.article-layout { max-width:var(--max); margin:0 auto; padding:0 24px 80px; display:grid; grid-template-columns:1fr 300px; gap:64px; padding-top:48px; }
.article-header { margin-bottom:32px; }
.breadcrumb { font-size:13px; color:var(--muted); margin-bottom:14px; display:flex; gap:6px; flex-wrap:wrap; }
.breadcrumb a { color:var(--muted); text-decoration:none; }
.breadcrumb a:hover { color:var(--accent); }
.breadcrumb span { color:var(--rule); }
.article-tag-pill { display:inline-flex; align-items:center; gap:6px; font-size:11px; font-weight:800; letter-spacing:2px; text-transform:uppercase; color:var(--accent); background:var(--accent-light); padding:5px 12px; border-radius:100px; margin-bottom:16px; text-decoration:none; }
.article-tag-pill:hover { text-decoration:none; background:#fde0d6; }
.article-title { font-family:'Playfair Display',serif; font-size:clamp(26px,3.5vw,42px); font-weight:900; line-height:1.15; letter-spacing:-0.5px; margin-bottom:16px; }
.article-intro { font-size:19px; font-weight:300; color:var(--ink-light); line-height:1.7; margin-bottom:20px; }
.article-meta { display:flex; align-items:center; gap:12px; font-size:13px; color:var(--muted); padding:16px 0; border-top:1px solid var(--rule); border-bottom:1px solid var(--rule); margin-bottom:32px; flex-wrap:wrap; }

/* Quick answer */
.quick-answer { background:var(--accent-light); border-left:4px solid var(--accent); border-radius:0 var(--radius) var(--radius) 0; padding:20px 24px; margin-bottom:36px; }
.quick-answer-label { font-size:10px; font-weight:800; letter-spacing:2.5px; text-transform:uppercase; color:var(--accent); margin-bottom:8px; }
.quick-answer p { font-size:16px; font-weight:500; color:var(--ink); line-height:1.6; margin:0; }

/* Article body */
.article-body h2 { font-family:'Playfair Display',serif; font-size:26px; font-weight:700; margin:44px 0 16px; letter-spacing:-0.3px; padding-top:8px; border-top:1px solid var(--rule); }
.article-body h3 { font-size:18px; font-weight:700; margin:28px 0 10px; color:var(--ink); }
.article-body p { margin-bottom:20px; color:var(--ink-light); font-size:17px; line-height:1.75; }
.article-body ul, .article-body ol { padding-left:22px; margin-bottom:20px; color:var(--ink-light); font-size:17px; }
.article-body li { margin-bottom:10px; line-height:1.7; }
.article-body strong { color:var(--ink); font-weight:700; }
.article-body a { color:var(--accent); }

/* Steps */
.steps { list-style:none; padding:0; margin:0 0 32px; }
.step { display:flex; gap:20px; padding:24px 0; border-bottom:1px solid var(--rule); }
.step:first-child { border-top:1px solid var(--rule); }
.step-num { width:38px; height:38px; border-radius:50%; background:var(--ink); color:var(--white); font-family:'Playfair Display',serif; font-size:16px; font-weight:700; display:flex; align-items:center; justify-content:center; flex-shrink:0; margin-top:2px; }
.step-content h3 { font-size:17px; font-weight:700; margin-bottom:7px; color:var(--ink); }
.step-content p { font-size:15px; color:var(--ink-light); margin:0; line-height:1.65; }

/* Callout boxes */
.tip-box, .warn-box, .info-box { border-radius:0 var(--radius) var(--radius) 0; padding:16px 20px; margin:24px 0; font-size:15px; line-height:1.65; color:var(--ink-light); }
.tip-box { background:#f0fdf4; border-left:4px solid #22c55e; }
.warn-box { background:#fffbeb; border-left:4px solid #f59e0b; }
.info-box { background:#eff6ff; border-left:4px solid #3b82f6; }
.tip-box strong, .warn-box strong, .info-box strong { display:block; margin-bottom:4px; font-size:11px; letter-spacing:1.5px; text-transform:uppercase; }
.tip-box strong { color:#16a34a; }
.warn-box strong { color:#d97706; }
.info-box strong { color:#2563eb; }

/* FAQ */
.faq { margin:44px 0 0; }
.faq-title { font-family:'Playfair Display',serif; font-size:26px; font-weight:700; margin-bottom:20px; letter-spacing:-0.3px; }
.faq-item { border-bottom:1px solid var(--rule); }
.faq-btn { width:100%; background:none; border:none; text-align:left; padding:18px 0; font-family:'Mulish',sans-serif; font-size:16px; font-weight:700; color:var(--ink); cursor:pointer; display:flex; justify-content:space-between; align-items:center; gap:16px; }
.faq-btn::after { content:'+'; font-size:22px; color:var(--muted); flex-shrink:0; transition:transform 0.2s; }
.faq-btn.open::after { transform:rotate(45deg); }
.faq-answer { font-size:15px; color:var(--ink-light); line-height:1.7; padding-bottom:18px; display:none; }
.faq-answer.open { display:block; }

/* Sidebar */
.sidebar {}
.sidebar-widget { margin-bottom:36px; position:sticky; top:80px; }
.sidebar-label { font-size:11px; font-weight:800; letter-spacing:2px; text-transform:uppercase; color:var(--muted); padding-bottom:12px; border-bottom:2px solid var(--ink); margin-bottom:16px; }
.sidebar-link { display:block; font-size:14px; font-weight:600; color:var(--ink); text-decoration:none; padding:11px 0; border-bottom:1px solid var(--rule); line-height:1.4; transition:color 0.2s; }
.sidebar-link:hover { color:var(--accent); }
.sidebar-tag { font-size:10px; font-weight:700; letter-spacing:1.5px; text-transform:uppercase; color:var(--muted); display:block; margin-bottom:3px; }

/* ── SEARCH PAGE ── */
.search-header { padding:40px 0 32px; border-bottom:1px solid var(--rule); margin-bottom:36px; }
.search-header h1 { font-family:'Playfair Display',serif; font-size:32px; font-weight:700; margin-bottom:8px; }
.search-count { font-size:15px; color:var(--muted); }
.search-results { display:grid; gap:0; margin-bottom:64px; }
.search-result { display:flex; gap:20px; padding:24px 0; border-bottom:1px solid var(--rule); text-decoration:none; color:inherit; }
.search-result:hover .search-result-title { color:var(--accent); }
.search-result-emoji { font-size:36px; flex-shrink:0; width:56px; height:56px; background:var(--off-white); border-radius:var(--radius); display:flex; align-items:center; justify-content:center; }
.search-result-tag { font-size:10px; font-weight:800; letter-spacing:2px; text-transform:uppercase; color:var(--accent); margin-bottom:5px; }
.search-result-title { font-family:'Playfair Display',serif; font-size:20px; font-weight:700; margin-bottom:6px; transition:color 0.2s; }
.search-result-excerpt { font-size:14px; color:var(--ink-light); }

/* ── FOOTER ── */
.site-footer { background:var(--ink); color:rgba(255,255,255,0.7); margin-top:auto; }
.footer-inner { max-width:var(--max); margin:0 auto; padding:0 24px; }
.footer-top { display:grid; grid-template-columns:2fr 1fr 1fr; gap:48px; padding:56px 0 40px; border-bottom:1px solid rgba(255,255,255,0.1); }
.footer-logo { font-family:'Playfair Display',serif; font-size:22px; font-weight:900; color:var(--white); margin-bottom:12px; }
.footer-logo span { color:var(--accent); }
.footer-brand p { font-size:14px; line-height:1.7; max-width:280px; }
.footer-cats h4, .footer-links-col h4 { font-size:11px; font-weight:800; letter-spacing:2px; text-transform:uppercase; color:rgba(255,255,255,0.4); margin-bottom:16px; }
.footer-cats ul, .footer-links-col ul { list-style:none; display:flex; flex-direction:column; gap:10px; }
.footer-cats a, .footer-links-col a { color:rgba(255,255,255,0.6); font-size:14px; text-decoration:none; transition:color 0.2s; }
.footer-cats a:hover, .footer-links-col a:hover { color:var(--white); }
.footer-bottom { padding:20px 0; text-align:center; font-size:13px; color:rgba(255,255,255,0.3); }

/* ── UTILITY ── */
.badge { display:inline-block; font-size:10px; font-weight:800; letter-spacing:1px; text-transform:uppercase; padding:3px 8px; border-radius:3px; }
.badge-easy { background:#dcfce7; color:#166534; }
.badge-intermediate { background:#fef9c3; color:#854d0e; }
.badge-advanced { background:#fee2e2; color:#991b1b; }
.no-results { text-align:center; padding:64px 0; color:var(--muted); }
.no-results h2 { font-family:'Playfair Display',serif; font-size:28px; margin-bottom:12px; color:var(--ink); }

/* ── ANIMATIONS ── */
@keyframes fadeUp { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:translateY(0)} }
.hero-eyebrow{animation:fadeUp .5s ease both}
.hero h1{animation:fadeUp .5s .1s ease both}
.hero-sub{animation:fadeUp .5s .2s ease both}
.hero-search{animation:fadeUp .5s .3s ease both}
.hero-tags{animation:fadeUp .5s .4s ease both}

/* ── RESPONSIVE ── */
@media(max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:0}
  .sidebar{display:none}
  .featured-grid{grid-template-columns:1fr 1fr}
  .article-grid{grid-template-columns:1fr 1fr}
  .cat-article-grid{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none;flex-direction:column;position:absolute;top:62px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--rule);padding:16px 24px;gap:0;box-shadow:0 8px 24px rgba(0,0,0,0.1)}
  .nav-links.open{display:flex}
  .nav-links li{border-bottom:1px solid var(--rule)}
  .nav-links a{display:block;padding:12px 0}
  .nav-toggle{display:flex}
  .nav-search-wrap{display:none}
  .featured-grid{grid-template-columns:1fr}
  .article-grid{grid-template-columns:1fr 1fr}
  .trending-grid{grid-template-columns:1fr}
  .trending-item:nth-child(even){padding-left:0;border-left:none}
  .newsletter{padding:32px 20px}
  .footer-top{grid-template-columns:1fr;gap:32px;padding:40px 0 32px}
  .hero h1{letter-spacing:-1px}
}
@media(max-width:480px){
  .article-grid{grid-template-columns:1fr}
  .cat-article-grid{grid-template-columns:1fr}
}