/* product-review.css - Shared styling for all review pages on TechScribe.in */
/* Works for both Video AI Tools and Image & Design AI Tools */

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

:root {
  --purple: #7C3AED;
  --purple-dk: #5B21B6;
  --purple-lt: #EDE9FE;
  --purple-md: #DDD6FE;
  --bg: #F5F4FF;
  --bg-alt: #EDEAFF;
  --surface: #FFFFFF;
  --text-1: #1A1523;
  --text-2: #6B7280;
  --text-3: #9CA3AF;
  --border: #DDD6FE;
  --border-lt: #EDE9FE;
  --font: 'Inter', sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --radius: 16px;
  --max: 1100px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--surface); color: var(--text-1); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }

.tool-strip { background: var(--text-1); padding: 0.625rem 2rem; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.tool-strip::-webkit-scrollbar { display: none; }
.tool-strip-inner { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; gap: 0.25rem; }
.tool-strip-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.3); margin-right: 0.75rem; flex-shrink: 0; }
.tool-pill { font-size: 0.78rem; font-weight: 600; color: rgba(255,255,255,0.45); text-decoration: none; padding: 0.3rem 0.75rem; border-radius: 100px; border: 1px solid rgba(255,255,255,0.1); transition: all .15s; flex-shrink: 0; display: inline-flex; align-items: center; gap: 5px; }
.tool-pill img { width: 16px; height: 16px; object-fit: contain; border-radius: 2px; }
.tool-pill:hover { color: #fff; border-color: rgba(255,255,255,0.3); }
.tool-pill.active { background: var(--purple); border-color: var(--purple); color: #fff; }

.iv-hero { background: linear-gradient(160deg, #0F0A1E 0%, #1E0F3C 40%, #0F0A1E 100%); padding: 5rem 2rem 4rem; position: relative; overflow: hidden; }
.iv-hero::before { content: ''; position: absolute; top: -30%; right: -10%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(124,58,237,0.2) 0%, transparent 65%); pointer-events: none; }
.iv-hero::after { content: ''; position: absolute; bottom: -20%; left: 5%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 65%); pointer-events: none; }
.iv-hero-inner { max-width: var(--max); margin: 0 auto; position: relative; }
.iv-breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 0.75rem; font-weight: 500; color: rgba(255,255,255,0.35); margin-bottom: 2rem; }
.iv-breadcrumb a { color: rgba(255,255,255,0.35); text-decoration: none; transition: color .15s; }
.iv-breadcrumb a:hover { color: rgba(255,255,255,0.7); }
.iv-breadcrumb span { color: rgba(255,255,255,0.15); }
.iv-hero-top { display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 2rem; }
.iv-tool-badge { width: 72px; height: 72px; min-width: 72px; background: transparent; border-radius: 18px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.iv-tool-badge img { width: 64px; height: 64px; object-fit: contain; border-radius: 12px; }
.iv-hero-text { flex: 1; }
.iv-hero-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #A78BFA; margin-bottom: 0.5rem; display: block; }
.iv-hero h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); font-weight: 900; color: #fff; letter-spacing: -0.04em; line-height: 1.1; margin-bottom: 0.75rem; }
.iv-hero-tagline { font-size: 1.0625rem; color: rgba(255,255,255,0.55); line-height: 1.6; max-width: 580px; }
.iv-hero-meta { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 1rem; }
.iv-meta-item { display: flex; align-items: center; gap: 6px; font-size: 0.8125rem; font-weight: 600; color: rgba(255,255,255,0.4); }
.iv-meta-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--purple); }

.iv-definition { background: rgba(124,58,237,0.08); border: 1px solid rgba(124,58,237,0.2); border-radius: var(--radius); padding: 1.5rem 2rem; margin-top: 2.5rem; max-width: 760px; }
.iv-definition-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #A78BFA; margin-bottom: 0.625rem; display: block; }
.iv-definition p { font-size: 0.9375rem; color: rgba(255,255,255,0.7); line-height: 1.7; }

.iv-toc { background: var(--bg); border-bottom: 1px solid var(--border-lt); padding: 1.25rem 2rem; position: sticky; top: 0; z-index: 100; backdrop-filter: blur(8px); }
.iv-toc-inner { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; gap: 0.25rem; overflow-x: auto; scrollbar-width: none; }
.iv-toc-inner::-webkit-scrollbar { display: none; }
.iv-toc-link { font-size: 0.78rem; font-weight: 600; color: var(--text-2); text-decoration: none; padding: 0.35rem 0.75rem; border-radius: 100px; white-space: nowrap; transition: all .15s; flex-shrink: 0; }
.iv-toc-link:hover { background: var(--purple-lt); color: var(--purple); }

.iv-main { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }
.iv-section { padding: 4rem 0; border-bottom: 1px solid var(--border-lt); }
.iv-section:last-child { border-bottom: none; }
.iv-section-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--purple); margin-bottom: 0.75rem; display: block; }
.iv-section h2 { font-family: var(--font-serif); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--text-1); letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 1.75rem; }
.iv-section h2 em { font-style: italic; color: var(--purple); }

.iv-prose { font-size: 1.0625rem; color: var(--text-2); line-height: 1.8; max-width: 720px; }
.iv-prose p { margin-bottom: 1.25rem; }
.iv-prose p:last-child { margin-bottom: 0; }
.iv-prose strong { color: var(--text-1); font-weight: 700; }

.iv-pullquote { border-left: 3px solid var(--purple); padding: 1.25rem 1.5rem; background: var(--purple-lt); border-radius: 0 var(--radius) var(--radius) 0; margin: 2rem 0; max-width: 720px; }
.iv-pullquote p { font-size: 1.125rem; font-weight: 600; color: var(--text-1); line-height: 1.6; font-style: italic; }

.iv-callout { background: var(--bg); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 1.5rem; margin: 2rem 0; max-width: 720px; }
.iv-callout-title { font-size: 0.75rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; color: var(--purple); margin-bottom: 0.875rem; display: block; }
.iv-callout-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.iv-callout-list li { font-size: 0.9375rem; color: var(--text-1); display: flex; align-items: flex-start; gap: 0.625rem; line-height: 1.5; }
.iv-callout-list li::before { content: '\2192'; color: var(--purple); font-weight: 700; flex-shrink: 0; margin-top: 1px; }

.iv-cards-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 2rem; max-width: 860px; }
.iv-card { background: var(--bg); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 1.5rem; transition: border-color .2s; }
.iv-card:hover { border-color: var(--purple); }
.iv-card-icon { font-size: 1.375rem; margin-bottom: 0.75rem; display: block; }
.iv-card-title { font-size: 0.9375rem; font-weight: 700; color: var(--text-1); margin-bottom: 0.5rem; line-height: 1.3; }
.iv-card-body { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; }

.iv-tech-table { width: 100%; max-width: 860px; border-collapse: collapse; margin-top: 2rem; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-lt); }
.iv-tech-table th { background: var(--bg-alt); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--purple); padding: 0.875rem 1.25rem; text-align: left; }
.iv-tech-table td { padding: 0.875rem 1.25rem; font-size: 0.9rem; border-top: 1px solid var(--border-lt); vertical-align: top; }
.iv-tech-table td:first-child { font-weight: 600; color: var(--text-1); width: 35%; }
.iv-tech-table td:last-child { color: var(--text-2); line-height: 1.6; }
.iv-tech-table tr:hover td { background: var(--bg); }

.iv-timeline { display: flex; flex-direction: column; gap: 0; margin-top: 2rem; max-width: 640px; }
.iv-timeline-item { display: flex; gap: 1.25rem; position: relative; }
.iv-timeline-item:not(:last-child)::after { content: ''; position: absolute; left: 19px; top: 40px; width: 2px; height: calc(100% - 8px); background: var(--border); }
.iv-timeline-dot { width: 40px; height: 40px; min-width: 40px; background: var(--purple-lt); border: 2px solid var(--purple-md); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 800; color: var(--purple); flex-shrink: 0; position: relative; z-index: 1; }
.iv-timeline-content { padding-bottom: 2rem; flex: 1; }
.iv-timeline-week { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--purple); margin-bottom: 0.375rem; display: block; }
.iv-timeline-title { font-size: 1rem; font-weight: 700; color: var(--text-1); margin-bottom: 0.375rem; }
.iv-timeline-body { font-size: 0.9rem; color: var(--text-2); line-height: 1.65; }

.iv-persona-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.iv-persona { background: var(--bg); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 1.5rem; transition: border-color .2s, transform .2s; }
.iv-persona:hover { border-color: var(--purple); transform: translateY(-2px); }
.iv-persona-icon { font-size: 1.5rem; margin-bottom: 0.875rem; display: block; }
.iv-persona-title { font-size: 0.9375rem; font-weight: 800; color: var(--text-1); margin-bottom: 0.25rem; }
.iv-persona-tag { font-size: 0.75rem; font-weight: 600; color: var(--purple); margin-bottom: 0.75rem; display: block; }
.iv-persona-body { font-size: 0.8375rem; color: var(--text-2); line-height: 1.65; }

.iv-elsewhere-grid { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 2rem; max-width: 640px; }
.iv-elsewhere-item { background: var(--bg); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 1.25rem 1.5rem; display: flex; align-items: center; gap: 1rem; text-decoration: none; transition: border-color .2s, transform .15s; color: inherit; }
.iv-elsewhere-item:hover { border-color: var(--purple); transform: translateX(4px); }
.iv-elsewhere-icon { width: 40px; height: 40px; min-width: 40px; display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0; background: #f3f4f6; border-radius: 8px; }
.iv-elsewhere-icon img { width: 32px; height: 32px; object-fit: contain; }
.iv-elsewhere-text { flex: 1; }
.iv-elsewhere-condition { font-size: 0.8125rem; color: var(--text-2); margin-bottom: 0.25rem; line-height: 1.4; }
.iv-elsewhere-rec { font-size: 0.9375rem; font-weight: 700; color: var(--purple); }
.iv-elsewhere-arr { color: var(--text-3); font-size: 1rem; transition: transform .15s; }
.iv-elsewhere-item:hover .iv-elsewhere-arr { transform: translateX(4px); color: var(--purple); }

.iv-defining { background: linear-gradient(135deg, #1A1523, #2D1B69); border-radius: 24px; padding: 3rem; margin-top: 2rem; max-width: 720px; position: relative; overflow: hidden; }
.iv-defining::before { content: '\201C'; position: absolute; top: -20px; left: 20px; font-size: 12rem; font-family: var(--font-serif); color: rgba(124,58,237,0.15); line-height: 1; pointer-events: none; }
.iv-defining p { font-size: 1.125rem; color: rgba(255,255,255,0.85); line-height: 1.8; position: relative; }
.iv-defining p strong { color: #A78BFA; font-weight: 700; }

.iv-stack { background: var(--bg); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 1.5rem 2rem; margin-top: 2rem; max-width: 720px; display: flex; gap: 1rem; flex-wrap: wrap; }
.iv-stack-item { display: flex; align-items: center; gap: 0.75rem; flex: 1; min-width: 180px; }
.iv-stack-logo { width: 36px; height: 36px; border-radius: 9px; overflow: hidden; flex-shrink: 0; background: #f3f4f6; display: flex; align-items: center; justify-content: center; }
.iv-stack-logo img { width: 28px; height: 28px; object-fit: contain; }
.iv-stack-text { font-size: 0.875rem; }
.iv-stack-name { font-weight: 700; color: var(--text-1); }
.iv-stack-role { color: var(--purple); font-weight: 600; font-size: 0.75rem; }

.iv-cta { background: var(--bg-alt); border-radius: 24px; padding: 3rem; margin: 4rem 0; display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.iv-cta-text h3 { font-size: 1.375rem; font-weight: 900; color: var(--text-1); letter-spacing: -0.03em; margin-bottom: 0.375rem; }
.iv-cta-text p { font-size: 0.9375rem; color: var(--text-2); line-height: 1.6; }
.iv-cta-note { font-size: 0.78rem; color: var(--text-3); margin-top: 0.5rem; }
.iv-cta-btn { background: var(--purple); color: #fff; font-family: var(--font); font-size: 1rem; font-weight: 700; padding: 0.875rem 2rem; border-radius: 100px; border: none; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; transition: opacity .15s, transform .15s; white-space: nowrap; flex-shrink: 0; }
.iv-cta-btn:hover { opacity: .85; transform: translateY(-1px); }

.iv-related { background: var(--bg); padding: 3.5rem 2rem; border-top: 1px solid var(--border-lt); }
.iv-related-inner { max-width: var(--max); margin: 0 auto; }
.iv-related-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--purple); margin-bottom: 1.5rem; display: block; }
.iv-related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.iv-related-card { background: var(--surface); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 1.25rem; text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 0.5rem; transition: border-color .2s, transform .2s; }
.iv-related-card:hover { border-color: var(--purple); transform: translateY(-2px); }
.iv-related-card-top { display: flex; align-items: center; gap: 0.75rem; }
.iv-related-icon { width: 40px; height: 40px; background: #f3f4f6; border-radius: 9px; display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0; }
.iv-related-icon img { width: 32px; height: 32px; object-fit: contain; }
.iv-related-name { font-size: 0.9375rem; font-weight: 700; color: var(--text-1); }
.iv-related-reason { font-size: 0.8125rem; color: var(--text-2); line-height: 1.5; }
.iv-back-link { display: inline-flex; align-items: center; gap: 6px; font-size: 0.875rem; font-weight: 600; color: var(--purple); text-decoration: none; margin-bottom: 2rem; border-bottom: 1px solid var(--purple-md); padding-bottom: 2px; transition: gap .15s; }
.iv-back-link:hover { gap: 10px; }

.iv-threshold { background: rgba(124,58,237,0.05); border: 1px solid rgba(124,58,237,0.18); border-left: 3px solid var(--purple); border-radius: 0 var(--radius) var(--radius) 0; padding: 1.5rem 1.75rem; margin-top: 2rem; max-width: 720px; }
.iv-threshold-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--purple); margin-bottom: 0.625rem; display: block; }
.iv-threshold p { font-size: 0.9375rem; color: var(--text-2); line-height: 1.7; }

.iv-antipersona { background: rgba(239,68,68,0.04); border: 1px solid rgba(239,68,68,0.15); border-left: 3px solid #EF4444; border-radius: 0 var(--radius) var(--radius) 0; padding: 1.5rem 1.75rem; margin-top: 1rem; max-width: 720px; }
.iv-antipersona-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: #EF4444; margin-bottom: 0.875rem; display: block; }
.iv-antipersona ul { list-style: none !important; padding: 0; margin: 0 0 1rem 0; display: flex; flex-direction: column; gap: 0.375rem; }
.iv-antipersona ul li { font-size: 0.9rem; color: var(--text-2); padding-left: 1.25rem; position: relative; line-height: 1.5; }
.iv-antipersona ul li::before { content: '\00D7'; position: absolute; left: 0; color: #EF4444; font-weight: 700; }
.iv-antipersona p { font-size: 0.9rem; color: var(--text-2); line-height: 1.65; }

.iv-protip { background: rgba(245,158,11,0.05); border: 1px solid rgba(245,158,11,0.2); border-left: 3px solid #F59E0B; border-radius: 0 var(--radius) var(--radius) 0; padding: 1.25rem 1.5rem; margin-top: 1.5rem; max-width: 640px; }
.iv-protip-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: #F59E0B; margin-bottom: 0.5rem; display: block; }
.iv-protip p { font-size: 0.9rem; color: var(--text-2); line-height: 1.65; }

.iv-final-truth { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 2rem; padding-top: 1.75rem; position: relative; }
.iv-final-truth-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: #A78BFA; margin-bottom: 0.625rem; display: block; }
.iv-final-truth p { font-size: 1.0625rem; color: rgba(255,255,255,0.75); line-height: 1.75; font-style: italic; position: relative; }

@media (max-width: 900px) {
  .iv-cards-grid, .iv-persona-grid, .iv-related-grid { grid-template-columns: 1fr; }
  .iv-cta { flex-direction: column; align-items: flex-start; }
  .iv-defining { padding: 2rem; }
  .iv-stack { flex-direction: column; }
}
@media (max-width: 600px) {
  .iv-hero-top { flex-direction: column; gap: 1rem; }
  .iv-hero h1 { font-size: 1.75rem; }
  .iv-toc { display: none; }
  .iv-main { padding: 0 1rem; }
  .iv-section { padding: 2.5rem 0; }
  .iv-cta { padding: 2rem; }
}