/* ===================================================
   BASTUKAR.IN - Professional Civil Engineering Website
   Theme: Dark Charcoal + Saffron Orange + Engineering Green
=================================================== */

:root {
  --primary-dark: #0f0f1a;
  --secondary-dark: #1a1a2e;
  --card-bg: #16213e;
  --orange: #e67e22;
  --orange-light: #f39c12;
  --orange-glow: rgba(230,126,34,0.15);
  --green: #27ae60;
  --green-light: #2ecc71;
  --white: #ffffff;
  --off-white: #f0f0f0;
  --gray-100: #e8e8e8;
  --gray-200: #d4d4d4;
  --gray-400: #999999;
  --gray-300: #aaaaaa;
  --gray-500: #666666;
  --border: rgba(230,126,34,0.3);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-orange: 0 0 20px rgba(230,126,34,0.25);
  --font-heading: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Open Sans', 'Segoe UI', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --radius: 12px;
  --radius-sm: 6px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--primary-dark);
  color: var(--off-white);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3,h4,h5,h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.3; }
h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.2rem; }

p { margin-bottom: 1rem; color: var(--gray-100); }
a { color: var(--orange); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--orange-light); }
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.4rem; }
img { max-width: 100%; height: auto; display: block; }

/* ===== UTILITY ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }
.text-orange { color: var(--orange); }
.text-green { color: var(--green); }
.text-center { text-align: center; }
.text-white { color: var(--white); }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.hidden { display: none !important; }

/* ===== SECTION HEADER ===== */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h2 { margin-bottom: 0.5rem; }
.section-header p { color: var(--gray-300); max-width: 600px; margin: 0 auto; }
.section-badge {
  display: inline-block;
  background: var(--orange-glow);
  border: 1px solid var(--orange);
  color: var(--orange);
  padding: 0.3rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.section-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--green));
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: var(--white);
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(230,126,34,0.5);
  color: var(--white);
}
.btn-outline {
  background: transparent;
  color: var(--orange);
  border: 2px solid var(--orange);
}
.btn-outline:hover {
  background: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-green {
  background: linear-gradient(135deg, var(--green), var(--green-light));
  color: var(--white);
}
.btn-green:hover { transform: translateY(-2px); color: var(--white); }
.btn-lg { padding: 1rem 2.5rem; font-size: 1.05rem; }
.btn-sm { padding: 0.5rem 1.2rem; font-size: 0.85rem; }

/* ===== HEADER/NAVBAR ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.logo img { width: 52px; height: 52px; border-radius: 50%; object-fit: cover; }
.logo-text { font-family: var(--font-heading); font-weight: 800; font-size: 1.5rem; color: var(--white); }
.logo-text span { color: var(--orange); }
.logo-tagline { font-size: 0.65rem; color: var(--gray-300); display: block; line-height: 1; font-weight: 400; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  padding: 0;
  margin: 0;
  align-items: center;
}
.nav-menu a {
  display: block;
  padding: 0.5rem 0.9rem;
  color: var(--gray-100);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--orange);
  background: var(--orange-glow);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
}
.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO SECTION ===== */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #0f1a0f 100%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e67e22' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--orange-glow);
  border: 1px solid var(--border);
  color: var(--orange);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc { font-size: 1.1rem; color: var(--gray-300); margin-bottom: 2rem; max-width: 560px; }
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--orange); display: block; }
.hero-stat .lbl { font-size: 0.8rem; color: var(--gray-300); text-transform: uppercase; letter-spacing: 0.05em; }
.hero-image {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 380px;
  opacity: 0.2;
}

/* ===== VISITOR COUNTER ===== */
.visitor-counter {
  background: linear-gradient(135deg, var(--card-bg), #1f2b4d);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.visitor-counter::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--green));
}
.visitor-counter h3 { color: var(--orange); margin-bottom: 1.5rem; font-size: 1.1rem; }
.counter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.35rem; }
.counter-item { padding: 0.65rem 0.25rem; background: rgba(0,0,0,0.3); border-radius: var(--radius-sm); text-align: center; min-width: 0; }
.counter-num { font-size: 1rem; font-weight: 800; color: var(--orange-light); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.counter-label { font-size: 0.6rem; color: var(--gray-300); text-transform: uppercase; letter-spacing: 0.03em; line-height: 1.3; display: block; margin-top: 0.2rem; word-break: break-word; }
.country-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.3rem; margin-top: 0.75rem; }
.country-item { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 0.3rem 0.2rem; background: rgba(255,255,255,0.03); border-radius: 4px; min-width: 0; font-size: 0.68rem; color: var(--gray-300); }
.country-item span:first-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; width: 100%; }
.country-item span:last-child { color: var(--orange-light); font-weight: 700; font-size: 0.7rem; margin-top: 0.1rem; }

/* ===== CARDS ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-orange);
  border-color: var(--orange);
}
.card-img { aspect-ratio: 16/9; overflow: hidden; background: linear-gradient(135deg, #1a2a1a, #2a1a2a); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .card-img img { transform: scale(1.08); }
.card-body { padding: 1.5rem; }
.card-category {
  display: inline-block;
  background: var(--orange-glow);
  color: var(--orange);
  border: 1px solid var(--border);
  padding: 0.2rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card-title { font-size: 1.05rem; margin-bottom: 0.75rem; color: var(--white); line-height: 1.4; }
.card-excerpt { font-size: 0.9rem; color: var(--gray-300); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; border-top: 1px solid rgba(255,255,255,0.05); }
.card-date { font-size: 0.8rem; color: var(--gray-500); }
.card-readmore { font-size: 0.85rem; color: var(--orange); font-weight: 600; }
.card-readmore:hover { color: var(--orange-light); }

/* ===== GRID LAYOUTS ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* ===== TOOLS SECTION ===== */
.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--green));
  transform: scaleX(0);
  transition: var(--transition);
}
.tool-card:hover::before { transform: scaleX(1); }
.tool-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-orange); border-color: var(--orange); }
.tool-icon {
  width: 60px; height: 60px;
  background: var(--orange-glow);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
}
.tool-card h3 { color: var(--white); margin-bottom: 0.75rem; font-size: 1.15rem; }
.tool-card p { font-size: 0.9rem; color: var(--gray-300); margin-bottom: 1.5rem; }
.tool-features { list-style: none; padding: 0; margin-bottom: 1.5rem; }
.tool-features li { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: var(--gray-300); padding: 0.25rem 0; }
.tool-features li::before { content: '✓'; color: var(--green); font-weight: 700; }

/* ===== SCORECARDAI PROMO ===== */
.scorecard-section {
  background: linear-gradient(135deg, #0a1628, #1a0a28);
  border: 1px solid rgba(147,51,234,0.3);
  border-radius: var(--radius);
  padding: 3rem;
  position: relative;
  overflow: hidden;
}
.scorecard-section::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(147,51,234,0.15), transparent);
  border-radius: 50%;
}
.scorecard-badge {
  display: inline-block;
  background: linear-gradient(135deg, #7c3aed, #9f67fa);
  color: white;
  padding: 0.3rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.scorecard-section h2 { color: var(--white); margin-bottom: 1rem; }
.scorecard-features { display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem; margin: 1.5rem 0; }
.scorecard-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(255,255,255,0.05);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(147,51,234,0.2);
}
.scorecard-feature-icon { font-size: 1.5rem; }
.scorecard-feature h4 { font-size: 0.9rem; color: var(--white); margin-bottom: 0.25rem; }
.scorecard-feature p { font-size: 0.8rem; color: var(--gray-300); margin: 0; }
.scorecard-pricing { display: flex; gap: 1rem; margin: 1.5rem 0; flex-wrap: wrap; }
.price-tag {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(147,51,234,0.3);
  border-radius: var(--radius-sm);
  padding: 1rem 1.5rem;
  text-align: center;
  flex: 1;
}
.price-tag .price { font-size: 1.8rem; font-weight: 800; color: #9f67fa; }
.price-tag .period { font-size: 0.8rem; color: var(--gray-300); }
.price-tag .plan { font-size: 0.85rem; font-weight: 600; color: var(--white); margin-bottom: 0.25rem; }
.btn-purple {
  background: linear-gradient(135deg, #7c3aed, #9f67fa);
  color: white;
}
.btn-purple:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(147,51,234,0.4); color: white; }

/* ===== YOUTUBE SECTION ===== */
.youtube-section {
  background: linear-gradient(135deg, #1a0a0a, #2a1a1a);
  border: 1px solid rgba(255,0,0,0.3);
  border-radius: var(--radius);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.youtube-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,0,0,0.15);
  border: 1px solid rgba(255,0,0,0.4);
  color: #ff4444;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.yt-channel-info { display: flex; align-items: center; gap: 1rem; margin-top: 1.5rem; }
.yt-avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  border: 3px solid #ff4444;
  overflow: hidden;
}
.yt-avatar img { width: 100%; height: 100%; object-fit: cover; }
.btn-youtube {
  background: #ff0000;
  color: white;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-youtube:hover { background: #cc0000; transform: translateY(-2px); color: white; }
.yt-videos-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.yt-video-thumb {
  background: rgba(255,0,0,0.1);
  border: 1px solid rgba(255,0,0,0.2);
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  cursor: pointer;
  transition: var(--transition);
}
.yt-video-thumb:hover { background: rgba(255,0,0,0.2); transform: scale(1.03); }

/* ===== DOWNLOADS SECTION ===== */
.download-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}
.download-card:hover { border-color: var(--orange); background: var(--orange-glow); }
.download-icon { font-size: 2rem; min-width: 40px; }
.download-info { flex: 1; }
.download-info h4 { font-size: 0.95rem; color: var(--white); margin-bottom: 0.25rem; }
.download-info p { font-size: 0.8rem; color: var(--gray-300); margin: 0; }
.download-meta { font-size: 0.75rem; color: var(--green); }

/* ===== ABOUT/FOUNDER ===== */
.founder-card {
  background: linear-gradient(135deg, var(--card-bg), #1f2b1f);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem;
  align-items: center;
}
.founder-photo {
  position: relative;
}
.founder-photo img {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--orange);
  box-shadow: 0 0 30px rgba(230,126,34,0.4);
}
.founder-photo::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px dashed var(--orange);
  opacity: 0.4;
  animation: spin 20s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.credentials-list { list-style: none; padding: 0; }
.credentials-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: var(--gray-100);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.credentials-list li::before { content: '🏆'; font-size: 0.9rem; }

/* ===== SOCIAL SHARE ===== */
.social-share {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 2rem;
}
.share-label { font-size: 0.85rem; color: var(--gray-300); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.share-facebook { background: #1877f2; color: white; }
.share-whatsapp { background: #25d366; color: white; }
.share-twitter { background: #000000; color: white; }
.share-telegram { background: #0088cc; color: white; }
.share-copy { background: var(--card-bg); color: var(--white); border: 1px solid var(--border); }
.share-btn:hover { opacity: 0.9; transform: translateY(-2px); }

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--gray-300);
  padding: 1rem 0;
}
.breadcrumb a { color: var(--orange); }
.breadcrumb span { color: var(--gray-500); }

/* ===== ARTICLE PAGE ===== */
.article-hero {
  background: linear-gradient(135deg, var(--secondary-dark), var(--card-bg));
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.article-meta { display: flex; gap: 1.5rem; flex-wrap: wrap; align-items: center; margin: 1rem 0; }
.article-meta span { font-size: 0.85rem; color: var(--gray-300); display: flex; align-items: center; gap: 0.35rem; }
.article-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}
/* ===== ARTICLE READABILITY — COMPLETE REWRITE ===== */
/* Base typography */
.article-content p,
.article-content div > span:not(:empty) {
  font-size: 1.06rem;
  line-height: 1.9;
  color: var(--gray-100);
  margin-bottom: 1rem;
}
.article-content div:not([class]):not(:empty) { margin-bottom: 0.5rem; }
.article-content > div { display: block; }

/* Headings */
.article-content h2 {
  color: var(--off-white);
  font-size: 1.45rem;
  font-weight: 800;
  margin: 3rem 0 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--orange);
}
.article-content h3 {
  display: block;
  margin: 2.5rem 0 1.1rem !important;
  padding: 0.85rem 1.2rem 0.85rem 1.4rem;
  background: linear-gradient(90deg, rgba(230,126,34,0.13) 0%, rgba(230,126,34,0.02) 100%);
  border-left: 4px solid var(--orange);
  border-radius: 0 10px 10px 0;
  color: var(--off-white) !important;
  font-size: 1.12rem !important;
  font-weight: 700;
  line-height: 1.5;
}
.article-content h3 b,
.article-content h3 u { font-weight: inherit; text-decoration: none; color: inherit; }
.article-content h4 {
  color: var(--orange-light);
  font-size: 1rem;
  font-weight: 700;
  margin: 1.75rem 0 0.6rem;
}

/* Lists */
.article-content ul,
.article-content ol { padding-left: 1.5rem; margin: 1.1rem 0 1.4rem; }
.article-content li {
  margin-bottom: 0.55rem;
  line-height: 1.8;
  color: var(--gray-100);
  font-size: 1.02rem;
}
.article-content ul li::marker { color: var(--orange); font-weight: 700; }
.article-content ol li::marker { color: var(--orange); font-weight: 700; }

/* Inline formula/math styling */
.article-content code {
  background: rgba(39,174,96,0.1);
  border: 1px solid rgba(39,174,96,0.25);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-family: 'Courier New', monospace;
  font-size: 0.93em;
  color: #2ecc71;
}
/* Formula display block (added by JS) */
.formula-display {
  background: rgba(39,174,96,0.08) !important;
  border: 1px solid rgba(39,174,96,0.22) !important;
  border-radius: 8px;
  padding: 0.9rem 1.3rem !important;
  margin: 0.9rem 0 !important;
  font-family: 'Courier New', monospace;
  font-size: 1.02rem;
  color: #2ecc71 !important;
  overflow-x: auto;
  display: block !important;
}
/* Step badge (added by JS) */
.step-badge {
  display: inline-block;
  background: var(--orange);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 0.15rem 0.55rem;
  border-radius: 20px;
  margin-right: 0.6rem;
  vertical-align: middle;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
/* Reading progress bar (inserted by JS) */
.reading-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--green));
  z-index: 9999;
  transition: width 0.08s linear;
}
/* In-page TOC box (inserted by JS) */
.article-toc-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin: 2rem 0 2.5rem;
}
.article-toc-box h4 {
  color: var(--orange);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
}
.article-toc-box ol { margin: 0; padding-left: 1.3rem; }
.article-toc-box li { margin-bottom: 0.35rem; }
.article-toc-box li a {
  color: var(--gray-300);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s;
}
.article-toc-box li a:hover { color: var(--orange-light); }
/* Key-takeaway box */
.key-takeaway {
  background: linear-gradient(135deg, rgba(39,174,96,0.1), rgba(39,174,96,0.03));
  border: 1px solid rgba(39,174,96,0.28);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  margin: 2rem 0;
}
.key-takeaway .kt-title {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
/* Placeholder image style */
.article-content .img-placeholder {
  background: var(--secondary-dark);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  gap: 0.4rem;
}
.article-content .img-placeholder-icon { font-size: 1.8rem; }
.article-content .img-placeholder-label { font-size: 0.8rem; color: var(--gray-500); }
/* Tables (already had styles, make responsive) */
.article-content table { display: block; overflow-x: auto; width: 100%; table-layout: auto; }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.article-content th {
  background: var(--orange);
  color: white;
  padding: 0.75rem;
  text-align: left;
}
.article-content td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: var(--gray-100);
}
.article-content tr:nth-child(even) td { background: rgba(255,255,255,0.03); }
.article-content blockquote {
  border-left: 4px solid var(--orange);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--orange-glow);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--gray-100);
}
.article-content img { border-radius: var(--radius-sm); margin: 1.5rem 0; }
.info-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin: 1.5rem 0;
}
.info-box.warning { border-left-color: var(--orange); }
.info-box.danger { border-left-color: #e74c3c; }
.formula-box {
  background: linear-gradient(135deg, rgba(39,174,96,0.1), rgba(39,174,96,0.05));
  border: 1px solid rgba(39,174,96,0.4);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin: 1.5rem 0;
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  color: var(--green-light);
}

/* ===== TOOLS PAGE ===== */
.tool-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.tool-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
}
.tool-form h3 {
  color: var(--orange);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.85rem; color: var(--gray-300); font-weight: 600; }
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--white);
  padding: 0.65rem 0.9rem;
  font-size: 0.9rem;
  transition: var(--transition);
  font-family: var(--font-body);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--orange);
  background: rgba(230,126,34,0.08);
  box-shadow: 0 0 0 3px rgba(230,126,34,0.15);
}
.form-group select option { background: var(--secondary-dark); }
.form-group .hint { font-size: 0.75rem; color: var(--gray-500); }
.form-full { grid-column: 1 / -1; }
.results-container {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: none;
}
.results-container.visible { display: block; }
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.results-header h3 { color: var(--green); }
.result-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
.result-table th { background: var(--orange); color: white; padding: 0.7rem 1rem; text-align: left; font-size: 0.85rem; }
.result-table td { padding: 0.6rem 1rem; border-bottom: 1px solid rgba(255,255,255,0.07); font-size: 0.9rem; }
.result-table tr:nth-child(even) td { background: rgba(255,255,255,0.03); }
.result-table td.highlight { color: var(--orange-light); font-weight: 700; }
.result-table td.val { font-weight: 700; color: var(--green-light); }
.chart-container { margin: 1.5rem 0; border-radius: var(--radius-sm); overflow: hidden; background: rgba(0,0,0,0.3); padding: 1rem; }
.step-header {
  background: var(--orange);
  color: white;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-weight: 700;
  font-size: 0.9rem;
  margin-top: 1.5rem;
}
.step-body {
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 1rem;
}
.report-btn-group { display: flex; gap: 1rem; margin-top: 1.5rem; flex-wrap: wrap; }
.print-header { display: none; }
.toc-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin-bottom: 2rem;
}
.toc-box h4 { color: var(--orange); margin-bottom: 0.75rem; }
.toc-box ol { color: var(--gray-300); font-size: 0.9rem; }
.toc-box ol li { margin-bottom: 0.3rem; }
.toc-box ol li a { color: var(--orange); }

/* ===== SIDEBAR ===== */
.page-with-sidebar { display: grid; grid-template-columns: 1fr 300px; gap: 2rem; align-items: start; }
.sidebar { position: sticky; top: 100px; }
.sidebar-widget {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.sidebar-widget-header {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  padding: 0.9rem 1.25rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: white;
}
.sidebar-widget-body { padding: 1.25rem; }
.related-post { display: flex; gap: 0.75rem; padding: 0.75rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.related-post-img { width: 70px; height: 50px; background: var(--secondary-dark); border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; }
.related-post-img img { width: 100%; height: 100%; object-fit: cover; }
.related-post-title { font-size: 0.83rem; color: var(--gray-100); line-height: 1.4; }
.related-post-title a { color: var(--gray-100); }
.related-post-title a:hover { color: var(--orange); }

/* ===== FOOTER ===== */
.site-footer {
  background: #080810;
  border-top: 1px solid var(--border);
  padding: 4rem 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-logo { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.footer-logo img { width: 48px; height: 48px; border-radius: 50%; }
.footer-logo-text { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 800; color: var(--white); }
.footer-desc { font-size: 0.9rem; color: var(--gray-300); margin-bottom: 1.25rem; }
.footer-social { display: flex; gap: 0.75rem; }
.social-icon {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
}
.social-icon:hover { background: var(--orange); border-color: var(--orange); transform: translateY(-2px); }
.footer-widget h4 { color: var(--white); margin-bottom: 1.25rem; font-size: 1rem; position: relative; }
.footer-widget h4::after {
  content: '';
  position: absolute;
  left: 0; bottom: -6px;
  width: 30px; height: 2px;
  background: var(--orange);
}
.footer-links { list-style: none; padding: 0; }
.footer-links li { margin-bottom: 0.6rem; }
.footer-links a { font-size: 0.88rem; color: var(--gray-300); transition: var(--transition); display: flex; align-items: center; gap: 0.4rem; }
.footer-links a:hover { color: var(--orange); padding-left: 0.3rem; }
.footer-links a::before { content: '›'; color: var(--orange); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-500);
}
.footer-bottom a { color: var(--orange); }

/* ===== SEARCH BAR ===== */
.search-container { max-width: 500px; margin: 2rem auto; }
.search-bar {
  display: flex;
  gap: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
}
.search-bar input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--white);
  padding: 0.8rem 1.25rem;
  font-size: 0.95rem;
}
.search-bar input:focus { outline: none; }
.search-bar button {
  background: var(--orange);
  color: white;
  border: none;
  padding: 0 1.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}
.search-bar button:hover { background: var(--orange-light); }

/* ===== TAG FILTERS ===== */
.filter-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2rem; }
.filter-tag {
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--gray-300);
  transition: var(--transition);
}
.filter-tag:hover, .filter-tag.active {
  background: var(--orange);
  color: white;
  border-color: var(--orange);
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--green);
  color: white;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 9999;
  transform: translateX(200%);
  transition: transform 0.3s ease;
  box-shadow: var(--shadow);
}
.toast.show { transform: translateX(0); }

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  width: 44px;
  height: 44px;
  background: var(--orange);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--orange-light); transform: translateY(-3px); }

/* ===== CATEGORY PILLS ===== */
.category-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 2.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--orange) transparent;
}
.cat-pill {
  white-space: nowrap;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--gray-300);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.cat-pill:hover, .cat-pill.active { background: var(--orange); color: white; border-color: var(--orange); }

/* ===== SEO / STRUCTURED DATA ===== */
.schema-breadcrumb { display: none; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.animate-fade-up { animation: fadeInUp 0.6s ease forwards; }
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* ===== PRINT STYLES ===== */
@media print {
  .site-header, .site-footer, .social-share, .back-to-top, .hamburger { display: none !important; }
  .print-header { display: block !important; text-align: center; margin-bottom: 1rem; }
  body { background: white; color: black; }
  .card, .tool-form, .results-container { border: 1px solid #ccc; }
  .btn { display: none !important; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .youtube-section { grid-template-columns: 1fr; gap: 2rem; }
  .founder-card { grid-template-columns: 1fr; text-align: center; }
  .founder-photo { display: flex; justify-content: center; }
}
@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--secondary-dark);
    flex-direction: column;
    padding: 1rem;
    border-top: 1px solid var(--border);
    gap: 0.25rem;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 0.75rem 1rem; }
  .hamburger { display: flex; }
  .hero-image { display: none; }
  .hero-buttons { flex-direction: column; }
  .hero-stats { gap: 1rem; }
  .form-grid { grid-template-columns: 1fr; }
  .scorecard-features { grid-template-columns: 1fr; }
  .yt-videos-grid { grid-template-columns: 1fr; }
  .scorecard-pricing { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .counter-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .btn-lg { padding: 0.85rem 1.75rem; }
}