/*
Theme Name: YoutubeThumbnailDownloader
Theme URI: https://youtubethumbnaildownloader4k.com/
Author: YoutubeThumbnailDownloader Team
Author URI: https://youtubethumbnaildownloader4k.com/
Description: A fast, SEO-optimized WordPress theme for a YouTube thumbnail downloader tool. Includes HD/4K extraction, bulk ZIP export, dark mode, custom page templates (About, Contact, FAQs, legal pages), and full blog support.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ytd-theme
*/

/* ==========================================================================
   YoutubeThumbnailDownloader — Design System
   Display: Space Grotesk / Body: Inter / Data: JetBrains Mono
   ========================================================================== */

:root{
  --ink:        #12131A;
  --ink-soft:   #2A2C38;
  --paper:      #FAFAF8;
  --paper-dim:  #F1F0EC;
  --line:       #E7E5DF;
  --gray-600:   #5B5F6B;
  --gray-500:   #7A7E8A;

  --red:        #E31C3D;
  --red-dark:   #B4142E;
  --red-tint:   #FDEBEE;
  --teal:       #0FAE9E;
  --teal-tint:  #E6F8F6;
  --gold:       #F2A93B;
  --gold-tint:  #FDF3E2;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(18,19,26,.06);
  --shadow-md: 0 8px 24px rgba(18,19,26,.08);
  --shadow-lg: 0 20px 48px rgba(18,19,26,.14);

  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --container: 1180px;
}

[data-theme="dark"]{
  --ink:        #F1F0EC;
  --ink-soft:   #D6D5D0;
  --paper:      #101115;
  --paper-dim:  #16171D;
  --line:       #262832;
  --gray-600:   #A7ABB8;
  --gray-500:   #8A8E9B;
  --red-tint:   #2A1319;
  --teal-tint:  #0E2523;
  --gold-tint:  #2A2015;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  transition:background .25s ease, color .25s ease;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-display); margin:0 0 .5em; line-height:1.15; letter-spacing:-.01em; }
p{ margin:0 0 1em; color:var(--gray-600); line-height:1.7; }
code, .mono{ font-family:var(--font-mono); }

.container{ max-width:var(--container); margin:0 auto; padding:0 24px; }
section{ padding:88px 0; }
@media (max-width:768px){ section{ padding:56px 0; } }

.visually-hidden{ position:absolute; width:1px;height:1px; overflow:hidden; clip:rect(0 0 0 0); }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:3px solid var(--teal);
  outline-offset:2px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--font-display); font-weight:600; font-size:15px;
  padding:14px 26px; border-radius:999px; border:1.5px solid transparent;
  cursor:pointer; transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.btn:active{ transform:scale(.97); }
.btn-primary{ background:var(--red); color:#fff; box-shadow:var(--shadow-md); }
.btn-primary:hover{ background:var(--red-dark); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-dark{ background:var(--ink); color:var(--paper); }
.btn-sm{ padding:9px 16px; font-size:13px; }
.btn:disabled{ opacity:.5; cursor:not-allowed; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:700; font-size:18px; }
.brand img{ height:34px; width:auto; }
.nav-links{ display:flex; align-items:center; gap:28px; }
.nav-links a{ font-size:14.5px; font-weight:600; color:var(--ink-soft); }
.nav-links a:hover{ color:var(--red); }
.nav-actions{ display:flex; align-items:center; gap:10px; }
.theme-toggle{
  width:40px; height:40px; border-radius:50%; border:1.5px solid var(--line);
  background:var(--paper-dim); display:flex; align-items:center; justify-content:center;
  cursor:pointer; font-size:17px;
}
.nav-toggle{ display:none; background:none; border:none; font-size:24px; cursor:pointer; color:var(--ink); }

@media (max-width:900px){
  .nav-links{
    position:absolute; top:100%; left:0; right:0; background:var(--paper);
    flex-direction:column; align-items:flex-start; gap:0; border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition:max-height .3s ease;
  }
  .nav-links.open{ max-height:400px; }
  .nav-links a{ padding:14px 24px; width:100%; border-top:1px solid var(--line); }
  .nav-toggle{ display:block; }
}

/* ---------- Hero ---------- */
.hero{ padding:64px 0 40px; position:relative; overflow:hidden; }
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:8px; font-family:var(--font-mono); font-size:12.5px;
  letter-spacing:.06em; text-transform:uppercase; color:var(--red); background:var(--red-tint);
  padding:6px 14px; border-radius:999px; margin-bottom:22px;
}
.hero h1{ font-size:clamp(34px,5vw,58px); max-width:820px; }
.hero h1 em{ font-style:normal; color:var(--red); }
.hero-sub{ font-size:18px; max-width:640px; margin-bottom:36px; }

/* ---------- Tool Panel ---------- */
.tool-panel{
  background:var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:28px; box-shadow:var(--shadow-lg);
}
.tool-input-row{ display:flex; gap:10px; flex-wrap:wrap; }
.tool-input-row input[type="text"], .tool-input-row textarea{
  flex:1; min-width:220px; font-family:var(--font-mono); font-size:15px;
  padding:16px 18px; border-radius:var(--radius-md); border:1.5px solid var(--line);
  background:var(--paper); color:var(--ink);
}
.tool-input-row textarea{ resize:vertical; min-height:96px; width:100%; }
.tool-meta-row{ display:flex; align-items:center; justify-content:space-between; margin-top:12px; flex-wrap:wrap; gap:10px; }
.tool-mode-switch{ display:flex; gap:6px; background:var(--paper); border:1px solid var(--line); border-radius:999px; padding:4px; }
.tool-mode-switch button{
  border:none; background:none; padding:8px 16px; border-radius:999px; font-family:var(--font-display);
  font-weight:600; font-size:13.5px; cursor:pointer; color:var(--gray-600);
}
.tool-mode-switch button.active{ background:var(--ink); color:var(--paper); }
.tool-hint{ font-size:13px; color:var(--gray-500); margin:14px 0 0; }
.tool-error{
  display:none; margin-top:14px; padding:12px 16px; border-radius:var(--radius-sm);
  background:var(--red-tint); color:var(--red-dark); font-size:14px; font-weight:600;
}
.tool-error.show{ display:block; }

/* ---------- Results ---------- */
.results{ margin-top:32px; }
.results-group{ margin-bottom:36px; }
.results-group-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; flex-wrap:wrap; gap:8px;}
.results-group-head h3{ font-size:16px; margin:0; }
.video-id-tag{ font-family:var(--font-mono); font-size:12.5px; color:var(--gray-500); }
.quality-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(230px,1fr)); gap:16px; }
.quality-card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-md);
  overflow:hidden; box-shadow:var(--shadow-sm); display:flex; flex-direction:column;
  position:relative; border-left:4px solid var(--line);
}
.quality-card[data-tier="4"]{ border-left-color:var(--red); }
.quality-card[data-tier="3"]{ border-left-color:var(--gold); }
.quality-card[data-tier="2"]{ border-left-color:var(--teal); }
.quality-card[data-tier="1"]{ border-left-color:var(--gray-500); }
.quality-card .thumb-wrap{ aspect-ratio:16/9; background:var(--paper-dim); overflow:hidden; }
.quality-card img{ width:100%; height:100%; object-fit:cover; }
.quality-card .thumb-info{ padding:14px 16px; display:flex; flex-direction:column; gap:10px; }
.quality-card .thumb-label{ display:flex; align-items:center; justify-content:space-between; }
.quality-card .thumb-label strong{ font-family:var(--font-display); font-size:15px; }
.quality-card .thumb-dims{ font-family:var(--font-mono); font-size:12px; color:var(--gray-500); }
.quality-card .thumb-actions{ display:flex; gap:8px; }
.badge-best{
  position:absolute; top:10px; right:10px; background:var(--red); color:#fff; font-size:11px;
  font-weight:700; padding:4px 10px; border-radius:999px; font-family:var(--font-mono);
}

.batch-item{ border:1px solid var(--line); border-radius:var(--radius-md); padding:18px; margin-bottom:18px; background:var(--paper); }
.batch-actions-row{ display:flex; justify-content:space-between; align-items:center; margin-bottom:18px; flex-wrap:wrap; gap:10px; }

/* ---------- Resolution Ladder (signature element) ---------- */
.ladder{ display:flex; align-items:flex-end; gap:14px; height:220px; margin:0 auto; max-width:420px; }
.ladder .step{
  flex:1; border-radius:8px 8px 0 0; position:relative; display:flex; align-items:flex-start; justify-content:center;
  padding-top:10px; font-family:var(--font-mono); font-size:11px; color:#fff; font-weight:600;
}
.ladder .step span{ writing-mode:vertical-rl; text-orientation:mixed; }
.ladder .step:nth-child(1){ height:35%; background:var(--gray-500); }
.ladder .step:nth-child(2){ height:55%; background:var(--teal); }
.ladder .step:nth-child(3){ height:78%; background:var(--gold); }
.ladder .step:nth-child(4){ height:100%; background:var(--red); }

/* ---------- Feature / How-it-works Grid ---------- */
.section-head{ max-width:640px; margin-bottom:48px; }
.section-head .hero-eyebrow{ margin-bottom:16px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
@media (max-width:900px){ .grid-3{ grid-template-columns:1fr 1fr; } .grid-4{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .grid-3, .grid-4{ grid-template-columns:1fr; } }

.card{
  background:var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:28px; transition:transform .2s ease, box-shadow .2s ease;
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-md); }
.card .icon{
  width:44px; height:44px; border-radius:12px; display:flex; align-items:center; justify-content:center;
  background:var(--red-tint); color:var(--red); font-size:20px; margin-bottom:16px;
}
.card h3{ font-size:17px; }
.card p{ font-size:14.5px; margin:0; }

.steps{ counter-reset:step; display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:768px){ .steps{ grid-template-columns:1fr; } }
.step-card{ position:relative; padding-left:0; }
.step-num{
  font-family:var(--font-mono); font-size:13px; color:var(--red); font-weight:700; display:block; margin-bottom:10px;
}

/* ---------- Testimonials ---------- */
.testimonial-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:900px){ .testimonial-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .testimonial-grid{ grid-template-columns:1fr; } }
.testimonial{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:24px; box-shadow:var(--shadow-sm);
}
.stars{ color:var(--gold); font-size:15px; letter-spacing:2px; margin-bottom:10px; }
.testimonial p{ font-size:14.5px; color:var(--ink-soft); margin-bottom:16px; }
.testimonial-author{ display:flex; align-items:center; gap:10px; }
.avatar{
  width:36px; height:36px; border-radius:50%; background:var(--red); color:#fff;
  display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:700; font-size:14px;
}
.author-meta strong{ display:block; font-size:13.5px; }
.author-meta span{ font-size:12px; color:var(--gray-500); }

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink); color:var(--paper); border-radius:var(--radius-lg);
  padding:56px; text-align:center; margin:0 24px;
}
.cta-band h2{ color:var(--paper); }
.cta-band p{ color:#B9BAC2; max-width:520px; margin-left:auto; margin-right:auto; }

/* ---------- FAQ Accordion ---------- */
.accordion-item{ border-bottom:1px solid var(--line); }
.accordion-q{
  width:100%; text-align:left; background:none; border:none; padding:22px 0; cursor:pointer;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  font-family:var(--font-display); font-weight:600; font-size:16.5px; color:var(--ink);
}
.accordion-q .plus{ font-size:22px; color:var(--red); transition:transform .2s ease; flex-shrink:0; }
.accordion-item.open .accordion-q .plus{ transform:rotate(45deg); }
.accordion-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.accordion-a p{ padding-bottom:22px; margin:0; font-size:15px; }

/* ---------- Forms (contact) ---------- */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:640px){ .form-grid{ grid-template-columns:1fr; } }
.field{ display:flex; flex-direction:column; gap:6px; }
.field.full{ grid-column:1/-1; }
.field label{ font-size:13.5px; font-weight:600; }
.field input, .field textarea, .field select{
  padding:13px 16px; border-radius:var(--radius-sm); border:1.5px solid var(--line);
  background:var(--paper); color:var(--ink); font-family:var(--font-body); font-size:14.5px;
}
.field textarea{ resize:vertical; min-height:130px; }
.form-note{ font-size:13px; color:var(--gray-500); margin-top:14px; }
.form-success{
  display:none; background:var(--teal-tint); color:var(--teal); padding:14px 18px; border-radius:var(--radius-sm);
  font-weight:600; margin-bottom:18px; font-size:14px;
}
.form-success.show{ display:block; }

/* ---------- Contact info cards ---------- */
.contact-info-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-bottom:48px; }
@media (max-width:768px){ .contact-info-grid{ grid-template-columns:1fr; } }

/* ---------- Legal Pages ---------- */
.legal-page h2{ font-size:22px; margin-top:40px; }
.legal-page h3{ font-size:17px; margin-top:26px; }
.legal-page p, .legal-page li{ font-size:15px; }
.legal-page ul{ margin:0 0 1em; padding-left:20px; list-style:disc; }
.legal-updated{ font-family:var(--font-mono); font-size:13px; color:var(--gray-500); margin-bottom:8px; }
.legal-toc{ background:var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius-md); padding:22px 26px; margin:28px 0 44px; }
.legal-toc a{ display:block; padding:6px 0; font-size:14.5px; color:var(--red); font-weight:600; }

/* ---------- Blog ---------- */
.blog-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
@media (max-width:900px){ .blog-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .blog-grid{ grid-template-columns:1fr; } }
.blog-card{ border:1px solid var(--line); border-radius:var(--radius-md); overflow:hidden; background:var(--paper); transition:transform .2s ease, box-shadow .2s ease; }
.blog-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-md); }
.blog-card .thumb{ aspect-ratio:16/9; background:linear-gradient(135deg,var(--red),var(--gold)); display:flex; align-items:center; justify-content:center; }
.blog-card .thumb span{ font-family:var(--font-mono); color:#fff; font-size:13px; opacity:.9; }
.blog-card .body{ padding:20px; }
.blog-tag{ font-family:var(--font-mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--red); }
.blog-card h3{ font-size:17px; margin:10px 0; }
.blog-card .meta{ font-size:12.5px; color:var(--gray-500); }
.blog-post-body h2{ font-size:22px; margin-top:38px; }
.blog-post-body p, .blog-post-body li{ font-size:15.5px; }
.blog-post-body ul, .blog-post-body ol{ padding-left:22px; margin-bottom:1.2em; }
.blog-post-body ul{ list-style:disc; }
.blog-post-body ol{ list-style:decimal; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:#D3D4DA; padding:64px 0 28px; margin-top:96px; }
.footer-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:32px; margin-bottom:48px; }
@media (max-width:768px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-brand img{ height:30px; filter:brightness(0) invert(1); }
.footer-col h4{ font-family:var(--font-display); font-size:13.5px; text-transform:uppercase; letter-spacing:.06em; color:#8B8D97; margin-bottom:16px; }
.footer-col a{ display:block; padding:6px 0; font-size:14px; color:#D3D4DA; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{ border-top:1px solid #262832; padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:13px; color:#8B8D97; }
.footer-disclaimer{ font-size:12px; color:#63656F; max-width:900px; margin-top:14px; line-height:1.6; }

/* ---------- Breadcrumb ---------- */
.breadcrumb{ font-size:13px; color:var(--gray-500); padding:20px 0 0; }
.breadcrumb a{ color:var(--gray-500); }
.breadcrumb a:hover{ color:var(--red); }

/* ---------- Toast ---------- */
.toast{
  position:fixed; bottom:26px; left:50%; transform:translateX(-50%) translateY(20px);
  background:var(--ink); color:var(--paper); padding:13px 22px; border-radius:999px; font-size:14px;
  font-weight:600; opacity:0; pointer-events:none; transition:all .25s ease; z-index:999; box-shadow:var(--shadow-lg);
}
.toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }

.page-hero{ padding:56px 0 20px; text-align:left; }
.page-hero p{ max-width:600px; }

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}