/* ==== Base & Variables ==== */
:root {
  --bg: #f8fafc;
  --bg-gradient: radial-gradient(at 0% 0%, hsla(253,16%,7%,0) 0, transparent 50%), radial-gradient(at 50% 0%, hsla(225,39%,30%,0.05) 0, transparent 50%), radial-gradient(at 100% 0%, hsla(339,49%,30%,0.05) 0, transparent 50%);
  --card: rgba(255, 255, 255, 0.7);
  --card-hover: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #6366f1;
  --accent-d: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7);
  --border: rgba(226, 232, 240, 0.8);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --r: 16px;
}

body.dark-mode {
  --bg: #0f172a;
  --bg-gradient: radial-gradient(at 0% 0%, hsla(253,16%,7%,0) 0, transparent 50%), radial-gradient(at 50% 0%, hsla(225,39%,30%,0.1) 0, transparent 50%), radial-gradient(at 100% 0%, hsla(339,49%,30%,0.1) 0, transparent 50%);
  --card: rgba(30, 41, 59, 0.7);
  --card-hover: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: rgba(51, 65, 85, 0.8);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Vazirmatn', 'IRANSans', 'Segoe UI', Tahoma, sans-serif;
  background-color: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; width: 100%; }

/* ==== Header (Glassmorphism) ==== */
.site-header {
  background: var(--card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background 0.3s ease;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; }
.brand {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  letter-spacing: -0.5px;
}
nav { display: flex; align-items: center; gap: 16px; }
nav a { color: var(--text); text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
nav a:hover { color: var(--accent); }

/* ==== Dark Mode Toggle ==== */
.theme-toggle {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}
.theme-toggle:hover { transform: scale(1.1); }

/* ==== Hero Section ==== */
.hero { padding: 80px 0 60px; text-align: center; animation: fadeIn 1s ease; }
.hero h1 { font-size: 3rem; font-weight: 800; margin-bottom: 16px; letter-spacing: -1px; line-height: 1.3; }
.hero p { color: var(--muted); font-size: 1.2rem; margin-bottom: 32px; max-width: 600px; margin-inline: auto; }
.search-box { max-width: 600px; margin: 0 auto; position: relative; }
.search-box input {
  width: 100%;
  padding: 16px 24px;
  border: 2px solid transparent;
  border-radius: 50px;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}
.search-box input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15); }

/* ==== Sections & Grids ==== */
.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-right: 12px;
  border-right: 4px solid var(--accent);
  display: inline-block;
}
.tools-grid, .blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}

/* ==== Cards ==== */
.tool-card, .blog-card {
  background: var(--card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.tool-card::before, .blog-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.tool-card:hover, .blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--card-hover);
}
.tool-card:hover::before, .blog-card:hover::before { opacity: 1; }

.tool-card .icon {
  font-size: 1.8rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
  color: var(--accent);
  transition: transform 0.3s ease;
}
.tool-card:hover .icon { transform: scale(1.1) rotate(-5deg); }
.tool-card h3, .blog-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.tool-card p, .blog-card p { color: var(--muted); font-size: 0.9rem; line-height: 1.6; flex: 1; }
.blog-card .meta { font-size: 0.8rem; color: var(--accent); margin-top: 16px; font-weight: 600; }

/* ==== Tool Page & Content ==== */
.tool-page { padding: 50px 20px; flex: 1; max-width: 800px; margin: 0 auto; animation: fadeIn 0.8s ease; }
.tool-page h1 { font-size: 2.2rem; margin-bottom: 12px; font-weight: 800; }
.tool-desc { color: var(--muted); margin-bottom: 32px; font-size: 1.1rem; }
.tool-box {
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 32px;
  box-shadow: var(--shadow);
}
textarea, input[type=text], input[type=number], input[type=url], select {
  width: 100%; padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px;
  font-family: inherit; font-size: 1rem; outline: none; background: var(--bg); color: var(--text);
  transition: all 0.2s ease; box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}
textarea:focus, input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15); }
textarea { resize: vertical; min-height: 160px; }

/* ==== Buttons ==== */
.btn {
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }

/* ==== Result Boxes & Stats ==== */
.result {
  margin-top: 24px; padding: 20px; background: rgba(99, 102, 241, 0.05);
  border: 1px solid rgba(99, 102, 241, 0.2); border-radius: 12px;
  font-size: 1.1rem; word-break: break-all; color: var(--text);
}
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 24px; }
.stats > div {
  text-align: center; padding: 20px; background: var(--bg);
  border-radius: 12px; border: 1px solid var(--border); transition: transform 0.2s;
}
.stats > div:hover { transform: translateY(-3px); border-color: var(--accent); }
.stats span { display: block; font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.stats small { color: var(--muted); font-size: 0.85rem; font-weight: 600; }

/* ==== Article (Blog) ==== */
.article-main { max-width: 800px; padding: 50px 20px; flex: 1; margin: 0 auto; animation: fadeIn 0.8s ease; }
.article-main h1 { font-size: 2.2rem; margin-bottom: 16px; line-height: 1.4; font-weight: 800; }
.article-meta { color: var(--muted); font-size: 0.95rem; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.article-body { line-height: 2.1; font-size: 1.1rem; color: var(--text); }
.article-body h2 { font-size: 1.6rem; margin: 40px 0 16px; color: var(--accent); font-weight: 800; }
.article-body h3 { font-size: 1.25rem; margin: 32px 0 12px; font-weight: 700; }
.article-body p { margin-bottom: 20px; text-align: justify; }
.article-body ul, .article-body ol { margin-bottom: 20px; padding-right: 24px; }
.article-body li { margin-bottom: 10px; }
.article-body a { color: var(--accent); text-decoration: none; font-weight: 600; border-bottom: 2px dashed var(--accent); transition: all 0.2s; }
.article-body a:hover { color: var(--accent-d); border-bottom-style: solid; }
.article-body blockquote {
  background: rgba(99, 102, 241, 0.05); border-right: 4px solid var(--accent);
  padding: 20px 24px; margin: 24px 0; border-radius: 12px; font-weight: 500;
}
.article-cta {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
  border: 1px solid rgba(99, 102, 241, 0.2); padding: 32px; border-radius: 16px;
  margin: 40px 0; text-align: center;
}
.article-cta h3 { margin-bottom: 12px; color: var(--accent); font-size: 1.3rem; }

/* ==== Footer ==== */
.site-footer {
  background: var(--card); backdrop-filter: blur(12px); border-top: 1px solid var(--border);
  padding: 24px 0; text-align: center; color: var(--muted); font-size: 0.9rem; margin-top: auto;
}

/* ==== Animations ==== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0% { transform: translateY(0); } 50% { transform: translateY(-10px); } 100% { transform: translateY(0); } }

/* ==== Responsive ==== */
@media(max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .tool-page h1, .article-main h1 { font-size: 1.8rem; }
  .tool-box { padding: 20px; }
  .header-inner { padding: 12px 16px; }
  nav a { font-size: 0.85rem; }
}

/* Fix for Yektanet Ads breaking grid */
.ad-container {
  display: block !important;
  clear: both !important;
  width: 100% !important;
  overflow: hidden !important;
}
/* Ensure grid is robust */
.tools-grid, .blog-grid {
  grid-auto-rows: 1fr;
}

/* ==== Command Palette ==== */
.cp-overlay {
  position: fixed; inset: 0; background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
  z-index: 99999; display: none; align-items: flex-start; justify-content: center;
  padding-top: 10vh;
}
.cp-modal {
  width: 90%; max-width: 650px; background: var(--card);
  border: 1px solid var(--border); border-radius: 16px; overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  animation: cpSlideDown 0.2s ease;
}
@keyframes cpSlideDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
.cp-search-wrap {
  display: flex; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.cp-icon { font-size: 1.2rem; margin-left: 12px; }
.cp-search-wrap input {
  flex: 1; background: transparent; border: none; font-size: 1.1rem; color: var(--text);
  outline: none; font-family: inherit;
}
.cp-results { max-height: 400px; overflow-y: auto; padding: 8px; }
.cp-item {
  display: flex; align-items: center; padding: 12px 16px; text-decoration: none;
  color: var(--text); border-radius: 8px; transition: background 0.1s;
}
.cp-item.active, .cp-item:hover { background: rgba(99, 102, 241, 0.1); }
.cp-item-icon { font-size: 1.3rem; margin-left: 16px; width: 24px; text-align: center; }
.cp-item-title { flex: 1; font-weight: 600; font-size: 1rem; }
.cp-item-type { font-size: 0.75rem; color: var(--muted); background: var(--bg); padding: 4px 8px; border-radius: 4px; border: 1px solid var(--border); }
.cp-empty { padding: 30px; text-align: center; color: var(--muted); }
.cp-fab {
  position: fixed; bottom: 30px; left: 30px; width: 56px; height: 56px;
  border-radius: 50%; background: var(--accent-gradient); color: white;
  border: none; font-size: 1.5rem; cursor: pointer; z-index: 9999;
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s;
}
.cp-fab:hover { transform: scale(1.1) translateY(-3px); }

/* ==== Favorite Stars ==== */
.tool-card { position: relative; }
.fav-star {
  position: absolute; top: 15px; right: 15px; font-size: 1.5rem;
  color: var(--muted); cursor: pointer; z-index: 10; transition: transform 0.2s;
}
.fav-star:hover { transform: scale(1.2); color: #f59e0b !important; }

/* ==== Dashboard Mini Cards ==== */
.mini-card { padding: 16px; display: flex; flex-direction: row; align-items: center; gap: 12px; }
.mini-card h3 { margin: 0; font-size: 0.95rem; }
@media(max-width: 768px) {
  .cp-fab { bottom: 20px; left: 20px; width: 50px; height: 50px; }
}


/* ==== Hub Mini Links (Homepage) ==== */
.hub-mini-link {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(168,85,247,0.08));
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s;
}
.hub-mini-link:hover {
  background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(168,85,247,0.15));
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(99,102,241,0.15);
}
.hub-mini-link span {
  color: var(--accent);
}

/* ==== Hub Related Link (Tool Pages) ==== */
.hub-related-link a:hover {
  background: linear-gradient(135deg, rgba(99,102,241,0.25), rgba(168,85,247,0.25)) !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99,102,241,0.2);
}

/* ==== Reading Progress Bar ==== */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0%;
  background: linear-gradient(90deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  z-index: 99999;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.5);
  transition: width 0.1s ease;
}

/* ==== Article Toolbar ==== */
.article-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.toolbar-section {
  display: flex;
  align-items: center;
  gap: 8px;
}
.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 4px;
}
.read-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(168,85,247,0.1));
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 10px;
  color: var(--accent);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}
.read-btn:hover {
  background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(168,85,247,0.2));
  transform: translateY(-2px);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  text-decoration: none;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text);
}
.share-btn:hover {
  transform: scale(1.1);
  border-color: var(--accent);
}
.share-wa:hover { background: #25D366; color: white; border-color: #25D366; }
.share-tg:hover { background: #0088cc; color: white; border-color: #0088cc; }
.share-tw:hover { background: #1DA1F2; color: white; border-color: #1DA1F2; }

/* ==== Back to Top ==== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: white;
  border: none;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 9998;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
}

/* ==== Mobile ==== */
@media (max-width: 640px) {
  .article-toolbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px;
  }
  .toolbar-divider {
    width: 100%;
    height: 1px;
    margin: 4px 0;
  }
  .share-buttons {
    flex-wrap: wrap;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }
}


/* ==== Related Sections ==== */
.related-section {
  margin: 40px auto;
  max-width: 800px;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.related-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
  padding-right: 12px;
  border-right: 3px solid var(--accent);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}
.related-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}
.related-card:hover {
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(168,85,247,0.1));
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99,102,241,0.15);
}
.related-icon {
  font-size: 1.1rem;
  color: var(--accent);
  flex-shrink: 0;
}
.related-name {
  line-height: 1.4;
}
@media (max-width: 640px) {
  .related-section {
    padding: 16px;
    margin: 30px auto;
  }
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
  .related-card {
    padding: 10px;
    font-size: 0.85rem;
  }
}

/* Fix Related Section Text Overflow */
.related-name {
  line-height: 1.4;
  word-break: break-word;
  overflow-wrap: anywhere;
  display: block;
}
.related-card {
  min-width: 0; /* مهم برای جلوگیری از سرریز در گرید */
}

/* ═══════════════════════════════════════════════
   PREMIUM UI UPGRADE 2026
   ═══════════════════════════════════════════════ */

/* 1. متغیرهای ارتقا یافته */
:root {
  --bg-elevated: #ffffff;
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --text-secondary: #475569;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 30px 60px rgba(0, 0, 0, 0.12), 0 10px 20px rgba(0, 0, 0, 0.06);
  --r-lg: 24px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* 2. پس‌زمینه داینامیک */
body {
  background-image: 
    radial-gradient(at 20% 10%, rgba(99, 102, 241, 0.06) 0px, transparent 50%),
    radial-gradient(at 80% 20%, rgba(168, 85, 247, 0.04) 0px, transparent 50%),
    radial-gradient(at 50% 90%, rgba(236, 72, 153, 0.04) 0px, transparent 50%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 3. اسکرول‌بار سفارشی */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { 
  background: rgba(148, 163, 184, 0.5); 
  border-radius: 5px; 
  border: 2px solid var(--bg); 
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* 4. هدر با گلس‌مورفیزم */
.site-header {
  background: rgba(255, 255, 255, 0.75) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.brand { 
  font-size: 1.6rem; 
  font-weight: 900; 
  letter-spacing: -1px; 
  transition: transform 0.3s var(--ease);
}
.brand:hover { transform: scale(1.05); }

nav a { 
  position: relative; 
  font-weight: 600; 
}
nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease);
}
nav a:hover::after { transform: scaleX(1); }

.theme-toggle {
  transition: all 0.3s var(--ease);
}
.theme-toggle:hover {
  transform: rotate(15deg) scale(1.1);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

/* 5. هیرو با مش متحرک */
.hero {
  position: relative;
  padding: 100px 0 70px;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
  z-index: -1;
  animation: meshFloat 12s ease-in-out infinite;
  filter: blur(60px);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: 100px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.12) 0%, transparent 60%);
  z-index: -1;
  animation: meshFloat 15s ease-in-out infinite reverse;
  filter: blur(60px);
  pointer-events: none;
}
@keyframes meshFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-30px, -20px) scale(1.05); }
  66% { transform: translate(20px, -30px) scale(0.95); }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -2px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #0f172a 0%, #6366f1 50%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.search-box { position: relative; max-width: 650px; margin: 0 auto; }
.search-box input {
  padding: 20px 60px 20px 24px !important;
  border: 2px solid var(--border) !important;
  border-radius: 50px !important;
  font-size: 1.05rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  transition: all 0.3s var(--ease);
}
.search-box input:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.12), var(--shadow-lg) !important;
  transform: translateY(-2px);
}

/* 6. تیتر بخش‌ها */
.section-title {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  padding-right: 16px;
  border-right: 4px solid var(--accent);
  display: inline-block;
  margin-bottom: 28px;
}

/* 7. کارت‌های ابزار فوق حرفه‌ای */
.tool-card {
  position: relative;
  border-radius: var(--r-lg) !important;
  padding: 28px 24px !important;
  box-shadow: var(--shadow-sm) !important;
  transition: all 0.4s var(--ease) !important;
  overflow: hidden;
  isolation: isolate;
}
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  padding: 2px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.tool-card:hover {
  transform: translateY(-8px) !important;
  box-shadow: var(--shadow-xl) !important;
  background: var(--card-hover) !important;
}
.tool-card:hover::before { opacity: 1; }
.tool-card:hover::after { opacity: 1; }

.tool-card .icon {
  width: 64px !important;
  height: 64px !important;
  border-radius: 18px !important;
  font-size: 2rem !important;
  margin-bottom: 18px !important;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(168, 85, 247, 0.12)) !important;
  transition: all 0.4s var(--ease-bounce) !important;
}
.tool-card:hover .icon {
  transform: scale(1.15) rotate(-8deg) !important;
  background: var(--accent-gradient) !important;
  color: white !important;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4) !important;
}
.tool-card h3 { font-size: 1.15rem !important; font-weight: 800 !important; letter-spacing: -0.3px; }

/* 8. دکمه‌های درخشان */
.btn {
  position: relative;
  padding: 14px 32px !important;
  border-radius: 12px !important;
  font-weight: 700 !important;
  overflow: hidden;
  transition: all 0.3s var(--ease) !important;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3) !important;
}
.btn:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.4) !important;
}

/* 9. کارت‌های وبلاگ */
.blog-card {
  border-radius: var(--r-lg) !important;
  padding: 28px !important;
  transition: all 0.4s var(--ease) !important;
  box-shadow: var(--shadow-sm) !important;
}
.blog-card:hover {
  transform: translateY(-6px) !important;
  box-shadow: var(--shadow-xl) !important;
  border-color: rgba(99, 102, 241, 0.3) !important;
}
.blog-card .meta {
  display: inline-flex !important;
  padding: 6px 14px !important;
  background: rgba(99, 102, 241, 0.08) !important;
  border-radius: 20px !important;
  font-weight: 700 !important;
}

/* 10. تایپوگرافی صفحات ابزار */
.tool-page h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem) !important;
  font-weight: 900 !important;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.tool-desc {
  font-size: 1.15rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.7;
}

/* 11. جعبه ابزار */
.tool-box {
  border-radius: var(--r-lg) !important;
  padding: 32px !important;
  box-shadow: var(--shadow-md) !important;
}

/* 12. فرم‌ها */
input[type="text"], input[type="number"], input[type="url"], input[type="email"], textarea, select {
  padding: 14px 18px !important;
  border: 2px solid var(--border) !important;
  border-radius: 12px !important;
  transition: all 0.2s var(--ease) !important;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12) !important;
}

/* 13. مقالات */
.article-main h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem) !important;
  font-weight: 900 !important;
  line-height: 1.3;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.article-meta {
  padding: 16px 20px !important;
  background: rgba(99, 102, 241, 0.05) !important;
  border-radius: 12px !important;
  border-right: 4px solid var(--accent) !important;
  margin-bottom: 32px;
}
.article-body { font-size: 1.1rem !important; line-height: 2 !important; }
.article-body h2 {
  font-size: 1.6rem !important;
  font-weight: 900 !important;
  margin: 44px 0 20px !important;
  padding-right: 16px;
  border-right: 4px solid var(--accent);
}
.article-body h3 { font-size: 1.25rem !important; font-weight: 800 !important; margin: 32px 0 14px !important; }
.article-body p { margin-bottom: 20px; }
.article-body a { 
  color: var(--accent) !important; 
  font-weight: 600; 
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}
.article-body a:hover { border-bottom-color: var(--accent); }
.article-body blockquote {
  padding: 24px 28px !important;
  margin: 28px 0 !important;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(168, 85, 247, 0.06)) !important;
  border-right: 4px solid var(--accent) !important;
  border-radius: 12px !important;
  font-size: 1.05rem !important;
  line-height: 1.9 !important;
}

/* 14. CTA مقالات */
.article-cta {
  position: relative;
  padding: 32px !important;
  margin: 40px 0 !important;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(168, 85, 247, 0.08)) !important;
  border: 1px solid rgba(99, 102, 241, 0.2) !important;
  border-radius: var(--r-lg) !important;
  overflow: hidden;
}

/* 15. انیمیشن اسکرول */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.scroll-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* 16. دارک مود عمیق */
body.dark-mode {
  --bg-elevated: #131c31;
  --text-secondary: #cbd5e1;
  background-image: 
    radial-gradient(at 20% 10%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
    radial-gradient(at 80% 20%, rgba(168, 85, 247, 0.1) 0px, transparent 50%),
    radial-gradient(at 50% 90%, rgba(236, 72, 153, 0.08) 0px, transparent 50%) !important;
}
body.dark-mode .site-header {
  background: rgba(10, 15, 30, 0.85) !important;
}
body.dark-mode .hero h1 {
  background: linear-gradient(135deg, #f1f5f9 0%, #a5b4fc 50%, #c4b5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
body.dark-mode .search-box input {
  background: rgba(19, 28, 49, 0.9);
}
body.dark-mode .article-cta {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15)) !important;
}

/* 17. ریسپانسیو */
@media (max-width: 768px) {
  .hero { padding: 60px 0 40px; }
  .hero::before, .hero::after { filter: blur(40px); opacity: 0.6; }
  .hero h1 { letter-spacing: -1px; }
  .hero p { font-size: 1.05rem; }
  .search-box input { padding: 16px 50px 16px 20px !important; font-size: 1rem; }
  .section-title { font-size: 1.4rem; }
  .tool-card { padding: 22px 18px !important; }
  .tool-card .icon { width: 56px !important; height: 56px !important; font-size: 1.7rem !important; }
  .article-body h2 { font-size: 1.4rem !important; margin-top: 36px !important; }
  .article-cta { padding: 24px 20px !important; }
}

@media (prefers-reduced-motion: reduce) {
  .hero::before, .hero::after { animation: none; }
  .scroll-reveal { transition: none; opacity: 1; transform: none; }
}