/*
Theme Name: LevelUp
Theme URI: https://example.com/levelup
Author: LevelUp Studio
Description: Premium dark theme for a Level Design (Unreal Engine 5) & Blender 3D portfolio, tutorials and screenshot gallery site. Includes custom post types for Portfolio, Tutorials and Screenshot Gallery.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: levelup
*/

/* =========================================================
   0. DESIGN TOKENS
   ========================================================= */
:root{
  --c-black:        #0F0F10;
  --c-anthracite:   #1B1B1D;
  --c-anthracite-2: #242427;
  --c-red:          #C1121F;
  --c-red-bright:   #E31B2B;
  --c-green:        #4B5320;
  --c-green-bright: #5D6B28;
  --c-white:        #FFFFFF;
  --c-gray:         #A7A7AD;
  --c-gray-dim:     #6E6E74;
  --c-border:       rgba(255,255,255,0.08);

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-alt:     'Manrope', sans-serif;

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --radius-pill: 999px;

  --container: 1240px;
  --gutter: clamp(20px, 5vw, 64px);

  --shadow-card: 0 10px 30px -12px rgba(0,0,0,0.6);
  --transition: 220ms cubic-bezier(.2,.8,.2,1);
}

/* =========================================================
   1. RESET & BASE
   ========================================================= */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}
body{
  margin:0;
  background: var(--c-black);
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; height:auto; display:block; }
a{ color: inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,h5{ font-family: var(--font-display); font-weight:600; line-height:1.15; margin:0 0 .5em; letter-spacing:-0.01em; }
p{ margin:0 0 1em; color: var(--c-gray); }
:focus-visible{ outline:2px solid var(--c-red-bright); outline-offset:3px; }

.container{ max-width: var(--container); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section{ padding: clamp(56px, 9vw, 120px) 0; }
.section--tight{ padding: clamp(40px, 6vw, 80px) 0; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-alt); font-size: 13px; font-weight:700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--c-green-bright);
  margin-bottom: 14px;
}
.eyebrow::before{ content:""; width:18px; height:2px; background: var(--c-red); display:inline-block; }
.section-head{ max-width: 620px; margin-bottom: 44px; }
.section-head h2{ font-size: clamp(28px, 3.4vw, 42px); }
.section-head p{ font-size: 17px; }

/* =========================================================
   2. BUTTONS
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  font-family: var(--font-alt); font-weight:600; font-size:15px;
  padding: 14px 28px; border-radius: var(--radius-pill);
  border: 1px solid transparent; cursor:pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); }
.btn-primary{ background: var(--c-red); color:#fff; box-shadow: 0 8px 24px -8px rgba(193,18,31,.65); }
.btn-primary:hover{ background: var(--c-red-bright); }
.btn-outline{ background: transparent; border-color: rgba(255,255,255,.22); color:#fff; }
.btn-outline:hover{ border-color:#fff; }
.btn-ghost{ background: rgba(255,255,255,.06); color:#fff; }
.btn-ghost:hover{ background: rgba(255,255,255,.12); }
.btn-sm{ padding: 9px 18px; font-size:13px; }

/* =========================================================
   3. HEADER / NAV
   ========================================================= */
.site-header{
  position: sticky; top:0; z-index: 500;
  background: rgba(15,15,16,0.55);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}
.site-header.is-scrolled{
  background: rgba(15,15,16,0.78);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--c-border);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height: 84px; gap: 24px; }
.site-logo{ display:flex; align-items:center; gap:10px; font-family: var(--font-display); font-weight:700; font-size:20px; }
.site-logo img{ height:32px; width:auto; }
.site-logo .accent{ color: var(--c-red); }

.primary-nav{ display:flex; align-items:center; gap:6px; }
.primary-nav ul{ display:flex; gap:2px; }
.primary-nav a{
  display:block; padding: 10px 16px; font-family: var(--font-alt); font-size:14.5px; font-weight:600;
  color: var(--c-gray); border-radius: var(--radius-pill); transition: color var(--transition), background var(--transition);
}
.primary-nav a:hover, .primary-nav .current-menu-item > a{ color:#fff; background: rgba(255,255,255,.06); }

.header-actions{ display:flex; align-items:center; gap:14px; }
.nav-search-toggle{ background:none; border:none; color: var(--c-gray); cursor:pointer; padding:8px; }
.nav-search-toggle:hover{ color:#fff; }
.menu-toggle{ display:none; background:none; border:none; color:#fff; cursor:pointer; }

@media (max-width: 900px){
  .primary-nav{ position:fixed; inset:84px 0 0 0; background: var(--c-black); transform: translateY(-8px); opacity:0; pointer-events:none; transition: var(--transition); flex-direction:column; align-items:flex-start; padding: 24px var(--gutter); overflow:auto; }
  .primary-nav.is-open{ opacity:1; pointer-events:auto; transform: translateY(0); }
  .primary-nav ul{ flex-direction:column; width:100%; gap:4px; }
  .primary-nav a{ padding: 14px 12px; font-size:18px; width:100%; }
  .menu-toggle{ display:block; }
  .header-actions .btn{ display:none; }
}

/* search flyout */
.nav-search-panel{ position:fixed; inset:0; background: rgba(15,15,16,.92); backdrop-filter: blur(6px); z-index:600; display:flex; align-items:flex-start; justify-content:center; padding-top: 14vh; opacity:0; pointer-events:none; transition: opacity var(--transition); }
.nav-search-panel.is-open{ opacity:1; pointer-events:auto; }
.nav-search-panel form{ width:min(640px,90vw); display:flex; gap:10px; }
.nav-search-panel input[type="search"]{ flex:1; background: var(--c-anthracite); border:1px solid var(--c-border); color:#fff; padding:16px 20px; border-radius: var(--radius-m); font-size:18px; }
.nav-search-close{ position:absolute; top:32px; right:32px; background:none; border:none; color:#fff; cursor:pointer; }

/* =========================================================
   4. HERO
   ========================================================= */
.hero{ position:relative; min-height: 88vh; display:flex; align-items:center; overflow:hidden; }
.hero-bg{ position:absolute; inset:0; z-index:0; }
.hero-bg img{ width:100%; height:100%; object-fit:cover; }
.hero-bg::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(15,15,16,.55) 0%, rgba(15,15,16,.55) 30%, var(--c-black) 96%),
              linear-gradient(90deg, rgba(15,15,16,.85) 0%, rgba(15,15,16,.15) 55%);
}
.hero-content{ position:relative; z-index:1; max-width: 720px; }
.hero-content .eyebrow{ color: var(--c-green-bright); }
.hero-content h1{ font-size: clamp(48px, 8vw, 96px); margin-bottom:.2em; }
.hero-content h1 .accent{ color: var(--c-red); }
.hero-content .lede{ font-size: clamp(17px, 2vw, 20px); color: var(--c-gray); max-width: 520px; margin-bottom: 34px; }
.hero-cta{ display:flex; gap:16px; flex-wrap:wrap; }
.hero-scroll{ position:absolute; bottom:28px; left:50%; transform:translateX(-50%); z-index:1; color: var(--c-gray); display:flex; flex-direction:column; align-items:center; gap:8px; font-size:12px; letter-spacing:.12em; text-transform:uppercase; }
.hero-scroll .line{ width:1px; height:36px; background: linear-gradient(var(--c-gray), transparent); animation: scrollpulse 1.8s ease-in-out infinite; }
@keyframes scrollpulse{ 0%,100%{ opacity:.3; } 50%{ opacity:1; } }

/* =========================================================
   5. REVEAL ON SCROLL
   ========================================================= */
.reveal{ opacity:0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform:none; }
.reveal-stagger > *{ opacity:0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal-stagger.is-visible > *{ opacity:1; transform:none; }
.reveal-stagger.is-visible > *:nth-child(1){ transition-delay:.02s; }
.reveal-stagger.is-visible > *:nth-child(2){ transition-delay:.1s; }
.reveal-stagger.is-visible > *:nth-child(3){ transition-delay:.18s; }
.reveal-stagger.is-visible > *:nth-child(4){ transition-delay:.26s; }

/* =========================================================
   6. CARDS (signature: HUD corner brackets)
   ========================================================= */
.card{
  position:relative; background: var(--c-anthracite); border:1px solid var(--c-border); border-radius: var(--radius-m);
  overflow:hidden; transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.card:hover{ transform: translateY(-6px); border-color: rgba(255,255,255,.18); box-shadow: var(--shadow-card); }
.card::before, .card::after{
  content:""; position:absolute; width:22px; height:22px; border: 2px solid var(--c-red); opacity:0; transition: opacity var(--transition), width var(--transition), height var(--transition);
  pointer-events:none;
}
.card::before{ top:10px; left:10px; border-right:none; border-bottom:none; }
.card::after{ bottom:10px; right:10px; border-left:none; border-top:none; }
.card:hover::before, .card:hover::after{ opacity:1; width:28px; height:28px; }

.card-media{ aspect-ratio: 16/10; overflow:hidden; background: var(--c-anthracite-2); }
.card-media img{ width:100%; height:100%; object-fit:cover; transition: transform .6s ease; }
.card:hover .card-media img{ transform: scale(1.06); }
.card-body{ padding: 22px 24px 26px; }
.card-tag{ display:inline-block; font-family: var(--font-alt); font-size:11.5px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color: var(--c-green-bright); background: rgba(75,83,32,.18); padding:5px 12px; border-radius: var(--radius-pill); margin-bottom:12px; }
.card h3{ font-size:19px; margin-bottom:8px; }
.card p{ font-size:14.5px; margin-bottom:0; }
.card-meta{ display:flex; align-items:center; gap:14px; font-size:12.5px; color: var(--c-gray-dim); margin-top:14px; font-family: var(--font-alt); }

/* expertise icon cards */
.expertise-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:24px; }
.expertise-card{ background: var(--c-anthracite); border:1px solid var(--c-border); border-radius: var(--radius-m); padding: 34px 28px; }
.expertise-icon{ width:52px; height:52px; border-radius: var(--radius-s); background: rgba(193,18,31,.12); display:flex; align-items:center; justify-content:center; color: var(--c-red); margin-bottom:22px; }
.expertise-card h3{ font-size:19px; }
.expertise-card p{ font-size:14.5px; }
@media (max-width: 900px){ .expertise-grid{ grid-template-columns:1fr; } }

/* grids */
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap:26px; }
@media (max-width: 1000px){ .grid-3{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px){ .grid-3{ grid-template-columns: 1fr; } }

.screenshot-grid{ columns: 3 280px; column-gap: 20px; }
.screenshot-grid .card{ break-inside: avoid; margin-bottom:20px; }
@media (max-width: 900px){ .screenshot-grid{ columns: 2 220px; } }
@media (max-width: 540px){ .screenshot-grid{ columns: 1; } }

.section-foot{ display:flex; justify-content:space-between; align-items:center; margin-top:36px; flex-wrap:wrap; gap:16px; }

/* =========================================================
   7. FILTER BAR
   ========================================================= */
.filter-bar{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom:36px; }
.filter-bar button{
  font-family: var(--font-alt); font-size:13.5px; font-weight:600; color: var(--c-gray);
  background: var(--c-anthracite); border:1px solid var(--c-border); padding:9px 18px; border-radius: var(--radius-pill);
  cursor:pointer; transition: var(--transition);
}
.filter-bar button:hover{ color:#fff; border-color: rgba(255,255,255,.25); }
.filter-bar button.is-active{ background: var(--c-red); color:#fff; border-color: var(--c-red); }

/* =========================================================
   8. INTRO / GLASS PANEL
   ========================================================= */
.glass-panel{
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border: 1px solid var(--c-border);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-l);
  padding: clamp(28px,4vw,52px);
}
.intro-block{ max-width: 760px; }
.intro-block p{ font-size: clamp(17px,1.6vw,20px); color: #D6D6DA; }

/* =========================================================
   9. SINGLE PROJECT / TUTORIAL
   ========================================================= */
.entry-hero{ position:relative; }
.entry-hero img{ width:100%; max-height:560px; object-fit:cover; border-radius: var(--radius-l); }
.entry-meta-row{ display:flex; flex-wrap:wrap; gap:24px; margin: 24px 0 32px; padding: 20px 0; border-top:1px solid var(--c-border); border-bottom:1px solid var(--c-border); font-family: var(--font-alt); font-size:14px; }
.entry-meta-row .meta-item{ display:flex; flex-direction:column; gap:4px; }
.entry-meta-row .meta-label{ color: var(--c-gray-dim); font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; }
.entry-meta-row .meta-value{ color:#fff; font-weight:600; }
.entry-content{ max-width: 780px; font-size:17px; }
.entry-content h2, .entry-content h3{ margin-top:1.6em; }
.entry-content img{ border-radius: var(--radius-m); margin: 1.2em 0; }
.entry-content blockquote{ border-left:3px solid var(--c-red); padding-left:20px; color:#fff; font-style:italic; }
.video-embed{ position:relative; padding-top:56.25%; border-radius: var(--radius-m); overflow:hidden; margin: 1.6em 0; background: var(--c-anthracite); }
.video-embed iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }

.difficulty{ display:inline-flex; align-items:center; gap:6px; font-size:12px; font-weight:700; letter-spacing:.06em; text-transform:uppercase; padding:4px 12px; border-radius: var(--radius-pill); }
.difficulty--beginner{ background: rgba(75,83,32,.25); color:#9BB25A; }
.difficulty--intermediate{ background: rgba(193,18,31,.16); color:#E39A9F; }
.difficulty--advanced{ background: rgba(193,18,31,.3); color:#FF9AA3; }

/* =========================================================
   10. SIDEBAR / RELATED / SOCIAL / BREADCRUMBS
   ========================================================= */
.breadcrumbs{ font-size:13px; color: var(--c-gray-dim); margin-bottom: 24px; font-family: var(--font-alt); }
.breadcrumbs a{ color: var(--c-gray); }
.breadcrumbs a:hover{ color:#fff; }
.breadcrumbs .sep{ margin:0 8px; opacity:.5; }

.social-share{ display:flex; gap:10px; margin: 32px 0; }
.social-share a{ width:40px; height:40px; border-radius:50%; background: var(--c-anthracite); border:1px solid var(--c-border); display:flex; align-items:center; justify-content:center; color: var(--c-gray); transition: var(--transition); }
.social-share a:hover{ color:#fff; border-color: var(--c-red); background: rgba(193,18,31,.15); }

.related-posts{ margin-top: 64px; padding-top: 48px; border-top:1px solid var(--c-border); }

/* =========================================================
   11. COMMENTS
   ========================================================= */
.comments-area{ margin-top:56px; max-width:780px; }
.comment-list{ margin:0 0 32px; }
.comment{ padding:20px 0; border-bottom:1px solid var(--c-border); display:flex; gap:16px; }
.comment .avatar{ border-radius:50%; flex-shrink:0; }
.comment-author{ font-weight:700; font-size:14.5px; }
.comment-date{ font-size:12.5px; color: var(--c-gray-dim); margin-left:10px; }
.comment-content p{ font-size:14.5px; margin: 6px 0 8px; }
.comment-reply-link{ font-size:12.5px; color: var(--c-red); font-weight:600; }
.comment-form input[type=text], .comment-form input[type=email], .comment-form textarea{ width:100%; }

/* =========================================================
   12. FORMS
   ========================================================= */
input[type=text], input[type=email], input[type=search], input[type=url], textarea, select{
  background: var(--c-anthracite); border:1px solid var(--c-border); color:#fff; padding:14px 16px;
  border-radius: var(--radius-s); font-family: var(--font-body); font-size:15px; width:100%;
  transition: border-color var(--transition);
}
input:focus, textarea:focus, select:focus{ border-color: var(--c-red); }
label{ display:block; font-family: var(--font-alt); font-size:13px; font-weight:600; color: var(--c-gray); margin-bottom:8px; }
.form-row{ margin-bottom:20px; }
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
@media (max-width:640px){ .form-grid{ grid-template-columns:1fr; } }
.form-status{ padding:14px 18px; border-radius: var(--radius-s); font-size:14.5px; margin-bottom:20px; }
.form-status.success{ background: rgba(75,83,32,.2); color:#B7C98A; border:1px solid rgba(75,83,32,.4); }
.form-status.error{ background: rgba(193,18,31,.15); color:#FF9AA3; border:1px solid rgba(193,18,31,.4); }

.newsletter-box{ background: var(--c-anthracite); border:1px solid var(--c-border); border-radius: var(--radius-l); padding: clamp(28px,4vw,48px); display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap; }
.newsletter-box h3{ margin-bottom:6px; }
.newsletter-box form{ display:flex; gap:10px; flex:1; min-width:280px; max-width:460px; }

/* =========================================================
   13. FOOTER
   ========================================================= */
.site-footer{ background: var(--c-anthracite); border-top:1px solid var(--c-border); padding: 64px 0 28px; margin-top: 40px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:40px; border-bottom:1px solid var(--c-border); }
.footer-brand .site-logo{ margin-bottom:14px; }
.footer-brand p{ font-size:14.5px; max-width:320px; }
.footer-col h4{ font-family: var(--font-alt); font-size:13px; text-transform:uppercase; letter-spacing:.08em; color:#fff; margin-bottom:18px; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col a{ color: var(--c-gray); font-size:14.5px; transition: color var(--transition); }
.footer-col a:hover{ color:#fff; }
.footer-social{ display:flex; gap:10px; margin-top:16px; }
.footer-social a{ width:38px; height:38px; border-radius:50%; background: rgba(255,255,255,.06); display:flex; align-items:center; justify-content:center; color:#fff; }
.footer-social a:hover{ background: var(--c-red); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:24px; font-size:13px; color: var(--c-gray-dim); flex-wrap:wrap; gap:12px; }
@media (max-width:900px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns: 1fr; } }

/* =========================================================
   14. BACK TO TOP
   ========================================================= */
.back-to-top{
  position:fixed; right:26px; bottom:26px; width:48px; height:48px; border-radius:50%;
  background: var(--c-red); color:#fff; display:flex; align-items:center; justify-content:center;
  border:none; cursor:pointer; opacity:0; pointer-events:none; transform: translateY(10px);
  transition: var(--transition); z-index:400; box-shadow: 0 8px 24px -8px rgba(193,18,31,.7);
}
.back-to-top.is-visible{ opacity:1; pointer-events:auto; transform:none; }

/* =========================================================
   15. LIGHTBOX
   ========================================================= */
.lb-overlay{ position:fixed; inset:0; background: rgba(0,0,0,.9); z-index:900; display:flex; align-items:center; justify-content:center; opacity:0; pointer-events:none; transition: opacity var(--transition); padding: 40px; }
.lb-overlay.is-open{ opacity:1; pointer-events:auto; }
.lb-overlay img{ max-width:92vw; max-height:82vh; border-radius: var(--radius-s); box-shadow: 0 30px 80px -20px rgba(0,0,0,.8); }
.lb-caption{ position:absolute; bottom:36px; left:0; right:0; text-align:center; color:#fff; font-size:14px; }
.lb-close, .lb-prev, .lb-next{ position:absolute; background:none; border:none; color:#fff; cursor:pointer; padding:10px; }
.lb-close{ top:24px; right:24px; }
.lb-prev{ left:24px; top:50%; transform:translateY(-50%); }
.lb-next{ right:24px; top:50%; transform:translateY(-50%); }

/* =========================================================
   16. UTILITIES
   ========================================================= */
.text-center{ text-align:center; }
.mt-0{ margin-top:0; }
.skip-link{ position:absolute; left:-9999px; top:0; background:var(--c-red); color:#fff; padding:12px 20px; z-index:1000; }
.skip-link:focus{ left:12px; top:12px; }
.pagination{ display:flex; gap:8px; justify-content:center; margin-top:48px; }
.pagination a, .pagination span{ padding:10px 16px; border-radius: var(--radius-s); background: var(--c-anthracite); font-family: var(--font-alt); font-size:14px; }
.pagination .current{ background: var(--c-red); }