/* Erropedia – main.css */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0c10;
  --bg2:       #0f1218;
  --bg3:       #151b24;
  --border:    #1f2d3d;
  --border2:   #2a3a4e;
  --accent:    #00d4ff;
  --accent2:   #0099cc;
  --accent3:   #00ff88;
  --red:       #ff4757;
  --amber:     #ffa726;
  --text:      #e2e8f0;
  --text2:     #94a3b8;
  --text3:     #64748b;
  --code-bg:   #0d1117;
  --radius:    8px;
  --radius-lg: 14px;
  --shadow:    0 4px 24px rgba(0,0,0,.5);
  --shadow-lg: 0 8px 48px rgba(0,0,0,.7);
  --font-sans:   'Inter', system-ui, sans-serif;
  --font-display:'Syne', sans-serif;
  --font-mono:   'Space Mono', monospace;
  --trans:     0.2s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font-sans); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; transition: color var(--trans); }
a:hover { color: var(--accent3); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(10,12,16,.93); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); height: 64px; }
.header-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 4px; color: var(--text); text-decoration: none; }
.logo:hover { color: var(--accent); }
.logo-icon { font-family: var(--font-mono); color: var(--accent); font-size: 1rem; background: rgba(0,212,255,.1); border: 1px solid rgba(0,212,255,.3); padding: 4px 8px; border-radius: 6px; font-weight: 700; letter-spacing: 0; }
.logo-text { font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; }
.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a { color: var(--text2); padding: 6px 14px; border-radius: 6px; font-size: .9rem; font-weight: 500; transition: all var(--trans); text-decoration: none; }
.main-nav a:hover { color: var(--text); background: var(--bg3); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; margin-left: auto; padding: 8px; }

/* Hero */
.hero { position: relative; overflow: visible; background: linear-gradient(135deg, #0a0c10 0%, #0f1520 50%, #0a1020 100%); padding: 90px 0 80px; border-bottom: 1px solid var(--border); }
.hero-grid-overlay { position: absolute; inset: 0; pointer-events: none; overflow: hidden; background-image: linear-gradient(rgba(0,212,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0,212,255,.04) 1px, transparent 1px); background-size: 50px 50px; }
.hero-inner { position: relative; max-width: 780px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(0,212,255,.08); border: 1px solid rgba(0,212,255,.25); color: var(--accent); font-family: var(--font-mono); font-size: .8rem; padding: 6px 14px; border-radius: 50px; margin-bottom: 28px; letter-spacing: .05em; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent3); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.3)} }
.hero-title { font-family: var(--font-display); font-size: clamp(2.8rem, 7vw, 5rem); font-weight: 800; line-height: 1.05; letter-spacing: -0.03em; color: var(--text); margin-bottom: 20px; }
.hero-title em { color: var(--accent); font-style: normal; }
.hero-sub { color: var(--text2); font-size: 1.1rem; max-width: 560px; margin-bottom: 40px; line-height: 1.7; }

/* Search Box */
.search-box { position: relative; max-width: 680px; overflow: visible; }
.search-inner { display: flex; align-items: center; background: var(--bg2); border: 1.5px solid var(--border2); border-radius: var(--radius-lg); overflow: hidden; transition: border-color var(--trans), box-shadow var(--trans); }
.search-inner:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,212,255,.15); }
.search-icon { padding: 0 12px 0 18px; font-size: 1.1rem; color: var(--text3); flex-shrink: 0; }
.search-input { flex: 1; background: none; border: none; outline: none; color: var(--text); font-family: var(--font-mono); font-size: .95rem; padding: 18px 8px; min-width: 0; }
.search-input::placeholder { color: var(--text3); }
.search-btn { background: var(--accent); color: #000; border: none; cursor: pointer; padding: 18px 28px; font-weight: 700; font-size: .95rem; font-family: var(--font-display); letter-spacing: .03em; transition: background var(--trans); flex-shrink: 0; white-space: nowrap; }
.search-btn:hover { background: var(--accent3); }
.search-hints { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.search-hints span { background: var(--bg3); border: 1px solid var(--border); color: var(--text2); padding: 5px 12px; border-radius: 50px; font-size: .8rem; font-family: var(--font-mono); cursor: pointer; transition: all var(--trans); }
.search-hints span:hover { border-color: var(--accent); color: var(--accent); }

/* Search Results Panel */
.search-results-panel { position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 9999; background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow-y: auto; max-height: 520px; }
.sr-item { display: block; padding: 14px 18px; border-bottom: 1px solid var(--border); transition: background var(--trans); color: var(--text); text-decoration: none; }
.sr-item:last-child { border-bottom: none; }
.sr-item:hover { background: var(--bg3); }
.sr-item-title { font-weight: 600; font-size: .95rem; margin-bottom: 4px; }
.sr-item-meta { display: flex; gap: 8px; align-items: center; font-size: .78rem; color: var(--text3); flex-wrap: wrap; }
.sr-item-code { font-family: var(--font-mono); background: rgba(0,212,255,.1); color: var(--accent); padding: 1px 6px; border-radius: 4px; font-size: .75rem; }
.sr-empty { padding: 20px 18px; color: var(--text3); text-align: center; font-size: .9rem; }
.sr-generating { padding: 16px 18px; color: var(--accent); display: flex; align-items: center; gap: 10px; font-size: .9rem; }
.spinner { width: 16px; height: 16px; border: 2px solid var(--border2); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; flex-shrink: 0; }
@keyframes spin { to { transform: rotate(360deg); } }
.sr-no-results { padding: 24px 18px 28px; text-align: center; }
.sr-no-results p { color: var(--text2); font-size: .9rem; margin-bottom: 12px; }
.sr-ai-btn { display: inline-flex; align-items: center; gap: 8px; background: rgba(0,212,255,.08); border: 1px solid rgba(0,212,255,.3); color: var(--accent); padding: 10px 20px; border-radius: 50px; font-size: .88rem; font-weight: 600; cursor: pointer; transition: all var(--trans); font-family: var(--font-sans); }
.sr-ai-btn:hover { background: rgba(0,212,255,.16); transform: translateY(-1px); }
.sr-ai-notice { padding: 8px 18px; font-size: .75rem; color: var(--accent3); background: rgba(0,255,136,.06); border-bottom: 1px solid rgba(0,255,136,.15); display: flex; align-items: center; gap: 6px; }
.sr-footer { padding: 10px 18px; text-align: center; border-top: 1px solid var(--border); font-size: .78rem; }
.sr-footer a { color: var(--accent); }

/* Stats Bar */
.stats-bar { background: var(--bg2); border-bottom: 1px solid var(--border); }
.stats-inner { display: flex; justify-content: space-around; padding: 18px 0; flex-wrap: wrap; gap: 16px; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat strong { font-family: var(--font-mono); font-size: 1.5rem; color: var(--accent); }
.stat span { font-size: .75rem; color: var(--text3); text-transform: uppercase; letter-spacing: .08em; margin-top: 2px; }
.progress-wrap { height: 3px; background: var(--bg3); }
.progress-bar { height: 3px; background: linear-gradient(90deg, var(--accent), var(--accent3)); transition: width 1s ease; }

/* Sections */
.section { padding: 64px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 32px; }
.section-head h2 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--text); letter-spacing: -0.02em; }
.view-all { color: var(--accent); font-size: .9rem; font-weight: 600; }
.view-all:hover { color: var(--accent3); }

/* Categories Grid */
.categories-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.cat-card { display: flex; align-items: center; gap: 14px; background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 18px; color: var(--text); transition: all var(--trans); text-decoration: none; }
.cat-card:hover { border-color: var(--accent); background: var(--bg3); transform: translateY(-2px); box-shadow: var(--shadow); }
.cat-icon { font-size: 1.8rem; flex-shrink: 0; line-height: 1; }
.cat-info h3 { font-size: .9rem; font-weight: 600; margin-bottom: 2px; color: var(--text); }
.cat-info span { font-size: .75rem; color: var(--text3); font-family: var(--font-mono); }

/* Solutions Grid */
.solutions-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.sol-card { display: flex; flex-direction: column; gap: 10px; background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; color: var(--text); transition: all var(--trans); text-decoration: none; }
.sol-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,212,255,.08); }
.sol-code { font-family: var(--font-mono); font-size: .78rem; color: var(--accent); background: rgba(0,212,255,.08); border: 1px solid rgba(0,212,255,.2); padding: 3px 8px; border-radius: 5px; align-self: flex-start; }
.sol-card h3 { font-size: 1rem; font-weight: 600; color: var(--text); line-height: 1.4; }
.sol-card p { font-size: .85rem; color: var(--text2); line-height: 1.5; flex: 1; }
.sol-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: auto; }
.cat-pill { background: rgba(0,212,255,.1); color: var(--accent); border: 1px solid rgba(0,212,255,.2); padding: 2px 8px; border-radius: 4px; font-size: .72rem; font-weight: 600; }
.views, .age { font-size: .72rem; color: var(--text3); font-family: var(--font-mono); }

/* Badges */
.badge { padding: 2px 8px; border-radius: 4px; font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.badge-green { background: rgba(0,255,136,.1); color: var(--accent3); border: 1px solid rgba(0,255,136,.25); }
.badge-amber { background: rgba(255,167,38,.1); color: var(--amber); border: 1px solid rgba(255,167,38,.25); }
.badge-red   { background: rgba(255,71,87,.1); color: var(--red); border: 1px solid rgba(255,71,87,.25); }

/* Footer */
.site-footer { background: var(--bg2); border-top: 1px solid var(--border); margin-top: 80px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding: 60px 0 40px; }
.footer-brand p { color: var(--text3); font-size: .85rem; margin-top: 12px; max-width: 260px; }
.footer-links h4 { font-family: var(--font-display); font-size: .9rem; font-weight: 700; color: var(--text); margin-bottom: 14px; letter-spacing: .05em; text-transform: uppercase; }
.footer-links a { display: block; color: var(--text3); font-size: .85rem; margin-bottom: 8px; transition: color var(--trans); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 0; color: var(--text3); font-size: .8rem; }

/* Solution Page */
.page-wrap { padding: 40px 20px 80px; max-width: 1200px; margin: 0 auto; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: .82rem; color: var(--text3); margin-bottom: 32px; flex-wrap: wrap; }
.breadcrumb a { color: var(--text3); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.sol-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.sol-main { min-width: 0; }
.sol-header { margin-bottom: 32px; }
.error-code-badge { display: inline-block; font-family: var(--font-mono); font-size: .85rem; background: rgba(0,212,255,.12); color: var(--accent); border: 1px solid rgba(0,212,255,.3); padding: 6px 14px; border-radius: 6px; margin-bottom: 16px; }
.sol-header h1 { font-family: var(--font-display); font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 800; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.02em; }
.sol-header-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 18px; }
.views-badge, .date-badge { font-size: .8rem; color: var(--text3); font-family: var(--font-mono); }
.sol-summary { color: var(--text2); font-size: 1.05rem; line-height: 1.7; padding: 16px 20px; background: var(--bg2); border-left: 3px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; }

/* Inline search on solution page */
.inline-search { position: relative; margin: 28px 0; display: flex; }
.inline-search input { flex: 1; background: var(--bg2); border: 1px solid var(--border2); border-right: none; color: var(--text); padding: 12px 16px; border-radius: var(--radius) 0 0 var(--radius); font-family: var(--font-mono); font-size: .88rem; outline: none; transition: border-color var(--trans); }
.inline-search input:focus { border-color: var(--accent); }
.inline-search button { background: var(--accent); color: #000; border: none; padding: 12px 20px; border-radius: 0 var(--radius) var(--radius) 0; font-weight: 700; cursor: pointer; white-space: nowrap; }
.inline-search .search-results-panel { top: calc(100% + 4px); }

/* Prose */
.prose { color: var(--text); line-height: 1.8; }
.prose h2 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--text); margin: 36px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.prose h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; color: var(--text); margin: 24px 0 10px; }
.prose p { margin-bottom: 14px; color: var(--text2); }
.prose ol, .prose ul { margin: 14px 0 14px 24px; }
.prose li { margin-bottom: 8px; color: var(--text2); }
.prose ol li::marker { color: var(--accent); font-weight: 700; font-family: var(--font-mono); }
.prose ul li::marker { color: var(--accent); }
.prose pre { background: var(--code-bg); border: 1px solid var(--border2); border-radius: var(--radius); padding: 20px; overflow-x: auto; margin: 18px 0; }
.prose code { font-family: var(--font-mono); font-size: .88em; }
.prose pre code { color: var(--accent3); font-size: .9rem; }
.prose :not(pre) > code { background: rgba(0,212,255,.08); color: var(--accent); padding: 2px 6px; border-radius: 4px; }
.prose blockquote { border-left: 3px solid var(--accent); background: var(--bg2); padding: 16px 20px; margin: 18px 0; border-radius: 0 var(--radius) var(--radius) 0; color: var(--text2); }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: .9rem; }
.prose th { background: var(--bg3); color: var(--text); padding: 10px 14px; text-align: left; border: 1px solid var(--border2); font-weight: 600; }
.prose td { padding: 9px 14px; border: 1px solid var(--border); color: var(--text2); }
.prose tr:nth-child(even) td { background: rgba(255,255,255,.02); }

/* Vote */
.vote-box { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; text-align: center; margin: 40px 0; }
.vote-box p { color: var(--text2); margin-bottom: 16px; font-size: .95rem; }
.vote-btn { padding: 10px 24px; border-radius: 50px; border: 1px solid var(--border2); background: var(--bg3); color: var(--text); cursor: pointer; font-size: .9rem; font-weight: 600; margin: 0 6px; transition: all var(--trans); font-family: var(--font-sans); }
.vote-yes:hover { border-color: var(--accent3); color: var(--accent3); background: rgba(0,255,136,.08); }
.vote-no:hover  { border-color: var(--red); color: var(--red); background: rgba(255,71,87,.08); }
.vote-thanks { color: var(--accent3); font-weight: 600; }

/* Tags */
.tags-box { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0; }
.tag { background: var(--bg3); border: 1px solid var(--border); color: var(--text2); padding: 4px 12px; border-radius: 50px; font-size: .78rem; transition: all var(--trans); text-decoration: none; }
.tag:hover { border-color: var(--accent); color: var(--accent); }

/* Sidebar */
.sol-sidebar { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 80px; }
.sidebar-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; }
.sidebar-card h3 { font-size: .9rem; font-weight: 700; color: var(--text); margin-bottom: 14px; font-family: var(--font-display); }
.related-link { display: block; font-size: .82rem; color: var(--text2); padding: 7px 0; border-bottom: 1px solid var(--border); transition: color var(--trans); text-decoration: none; }
.related-link:last-child { border-bottom: none; }
.related-link:hover { color: var(--accent); }
.related-link code { font-family: var(--font-mono); font-size: .75rem; color: var(--accent); }
.cat-pill-large { display: inline-block; padding: 8px 16px; background: rgba(0,212,255,.08); border: 1px solid rgba(0,212,255,.2); color: var(--accent); border-radius: var(--radius); font-size: .88rem; font-weight: 600; }
.search-sidebar input { width: 100%; background: var(--bg3); border: 1px solid var(--border2); color: var(--text); padding: 10px 12px; border-radius: var(--radius); font-family: var(--font-mono); font-size: .85rem; outline: none; margin-bottom: 8px; transition: border-color var(--trans); }
.search-sidebar input:focus { border-color: var(--accent); }
.search-sidebar button { width: 100%; padding: 10px; background: var(--accent); color: #000; border: none; border-radius: var(--radius); font-weight: 700; cursor: pointer; }

/* Category / Search hero */
.cat-hero, .search-hero { background: var(--bg2); border-bottom: 1px solid var(--border); padding: 48px 0 36px; }
.cat-hero h1, .search-hero h1 { font-family: var(--font-display); font-size: 2rem; font-weight: 800; margin: 10px 0 12px; letter-spacing: -0.02em; }
.search-hero h1 em { color: var(--accent); font-style: normal; }
.cat-hero p { color: var(--text2); max-width: 600px; }
.cat-stats { display: flex; gap: 20px; margin-top: 16px; }
.cat-stats span { font-family: var(--font-mono); font-size: .8rem; color: var(--text3); }
.filter-bar { display: flex; align-items: center; gap: 10px; padding: 24px 0 18px; flex-wrap: wrap; }
.filter-bar span { color: var(--text3); font-size: .85rem; }
.filter-btn { padding: 6px 16px; border-radius: 50px; border: 1px solid var(--border2); color: var(--text2); font-size: .83rem; font-weight: 500; transition: all var(--trans); text-decoration: none; }
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 700; }
.search-form .search-inner { border-radius: var(--radius-lg); }
.result-count { color: var(--text3); font-size: .85rem; font-family: var(--font-mono); margin-top: 14px; }
.solutions-list { display: flex; flex-direction: column; gap: 14px; padding: 32px 0; }
.sol-list-item { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px 24px; color: var(--text); transition: all var(--trans); text-decoration: none; }
.sol-list-item:hover { border-color: var(--accent); transform: translateX(4px); }
.sol-list-main { flex: 1; min-width: 0; }
.sol-list-main h2 { font-size: 1rem; font-weight: 600; margin: 6px 0; color: var(--text); }
.sol-list-main p { font-size: .85rem; color: var(--text2); }
.inline-code { font-family: var(--font-mono); font-size: .78rem; color: var(--accent); background: rgba(0,212,255,.08); padding: 2px 7px; border-radius: 4px; margin-bottom: 4px; display: inline-block; }
.sol-list-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; flex-shrink: 0; }
.no-results { text-align: center; padding: 80px 20px; color: var(--text2); }
.no-results p { margin-bottom: 12px; }

/* Pagination */
.pagination { display: flex; gap: 8px; justify-content: center; padding: 40px 0; flex-wrap: wrap; }
.page-btn { padding: 8px 16px; background: var(--bg2); border: 1px solid var(--border2); color: var(--text2); border-radius: var(--radius); font-size: .88rem; transition: all var(--trans); text-decoration: none; }
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-btn.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 700; }

/* Admin */
.admin-wrap { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.admin-sidebar { background: var(--bg2); border-right: 1px solid var(--border); padding: 24px 16px; }
.admin-sidebar h2 { font-family: var(--font-display); font-size: 1rem; color: var(--text3); text-transform: uppercase; letter-spacing: .1em; margin: 0 0 16px; }
.admin-nav a { display: block; padding: 9px 14px; color: var(--text2); border-radius: var(--radius); font-size: .88rem; margin-bottom: 4px; transition: all var(--trans); text-decoration: none; }
.admin-nav a:hover, .admin-nav a.active { background: rgba(0,212,255,.1); color: var(--accent); }
.admin-main { padding: 36px; }
.admin-main h1 { font-family: var(--font-display); font-size: 1.8rem; margin-bottom: 28px; }
.stat-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; margin-bottom: 40px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; }
.stat-card .num { font-family: var(--font-display); font-size: 2rem; color: var(--accent); font-weight: 700; }
.stat-card .lbl { font-size: .78rem; color: var(--text3); text-transform: uppercase; letter-spacing: .08em; margin-top: 4px; }
.data-table { width: 100%; border-collapse: collapse; background: var(--bg2); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); }
.data-table th { background: var(--bg3); padding: 12px 16px; text-align: left; font-size: .8rem; color: var(--text3); text-transform: uppercase; letter-spacing: .07em; border-bottom: 1px solid var(--border); }
.data-table td { padding: 11px 16px; font-size: .88rem; color: var(--text2); border-bottom: 1px solid var(--border); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg3); }

/* Responsive */
@media (max-width: 900px) {
  .sol-layout { grid-template-columns: 1fr; }
  .sol-sidebar { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .admin-wrap { grid-template-columns: 1fr; }
  .admin-sidebar { display: none; }
}
@media (max-width: 640px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .main-nav.open { display: flex; flex-direction: column; position: fixed; inset: 64px 0 0; background: var(--bg2); padding: 20px; z-index: 99; }
  .main-nav.open a { padding: 14px; font-size: 1.1rem; border-bottom: 1px solid var(--border); }
  .hero { padding: 50px 0; }
  .hero-title { font-size: 2.2rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr 1fr; }
  .sol-list-item { flex-direction: column; }
  .sol-list-meta { flex-direction: row; align-items: center; }
}