/* ==========================================================================
   ENTERONORMIN (SGP-MBS) - Production Bio-Tech Landing Stylesheet
   Modern, ultra-performant, responsive 320px..1920px
   ========================================================================== */

:root {
  --bg-main: #090d16;
  --bg-card: #111827;
  --bg-card-hover: #1f2937;
  --bg-elevated: #1e293b;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #10b981;
  
  --primary: #10b981;
  --primary-glow: rgba(16, 185, 129, 0.25);
  --primary-dark: #064e3b;
  --primary-deep: #022c22;
  
  --gold: #f59e0b;
  --gold-glow: rgba(245, 158, 11, 0.25);
  --gold-dark: #78350f;
  
  --cyan: #06b6d4;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px var(--primary-glow);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

img, video {
  max-width: 100%;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-badge {
  background: linear-gradient(135deg, var(--primary), #059669);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  box-shadow: 0 0 15px var(--primary-glow);
}

.brand-name {
  color: var(--text-main);
}

.brand-sub {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 500;
  margin-left: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--primary), #059669);
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-cta-gold {
  background: linear-gradient(135deg, var(--gold), #d97706);
  box-shadow: 0 4px 15px var(--gold-glow);
}

.btn-cta-gold:hover {
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.03);
  transition: all 0.2s ease;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(circle, var(--primary-glow) 0%, rgba(9, 13, 22, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-gold::before {
  background: radial-gradient(circle, var(--gold-glow) 0%, rgba(9, 13, 22, 0) 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-pill-gold {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--gold);
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: #fff;
}

.hero-title span {
  background: linear-gradient(135deg, #10b981 0%, #34d399 50%, #6ee7b7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span.gold-text {
  background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #fef08a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Stat Grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 40px 0;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.4);
}

.stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
}

.stat-card-gold .stat-num {
  color: var(--gold);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Video Showcase Section */
.section {
  padding: 80px 0;
  position: relative;
}

.section-darker {
  background: #060911;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-pill {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Category Filter Tabs */
.filter-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.88rem;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: var(--bg-card-hover);
  color: #fff;
}

.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* Video Grid (9:16 vertical cards) */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  border-color: rgba(16, 185, 129, 0.5);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.8), 0 0 20px var(--primary-glow);
}

.video-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  background: #000;
  overflow: hidden;
}

.video-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb {
  transform: scale(1.05);
}

.video-preview-loop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.video-card:hover .video-preview-loop {
  opacity: 1;
}

.play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.9);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
  transition: all 0.3s ease;
  z-index: 2;
}

.video-card:hover .play-overlay {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--primary);
}

.card-badge-dur {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  z-index: 2;
  font-family: var(--font-mono);
}

.card-badge-num {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(16, 185, 129, 0.9);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  z-index: 2;
}

.card-info {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: #fff;
}

.card-style {
  font-size: 0.78rem;
  color: var(--primary);
  font-weight: 600;
  margin-top: auto;
}

/* Modal Player */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-box {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  z-index: 10;
  transition: background 0.2s;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.modal-video-wrap {
  width: 100%;
  aspect-ratio: 9 / 16;
  background: #000;
  position: relative;
}

.modal-video-wrap video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.modal-footer {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
}

.modal-meta-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.modal-nav {
  display: flex;
  gap: 8px;
}

.modal-nav-btn {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 600;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateY(-2px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.feature-icon-gold {
  background: rgba(245, 158, 11, 0.12);
  color: var(--gold);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #fff;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Comparison Table */
.table-wrap {
  overflow-x: auto;
  margin: 40px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.comp-table th, .comp-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.comp-table th {
  background: #0f172a;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comp-table tr:last-child td {
  border-bottom: none;
}

.comp-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.tag-good {
  color: var(--primary);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag-bad {
  color: #ef4444;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Interactive Calculator */
.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 800px;
  margin: 40px auto 0;
  box-shadow: var(--shadow-card);
}

.calc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.calc-field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.calc-input {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #fff;
  font-size: 1rem;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color 0.2s;
}

.calc-input:focus {
  border-color: var(--primary);
}

.calc-results {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-md);
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: center;
  margin-top: 24px;
}

.calc-res-val {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--primary);
  font-family: var(--font-mono);
}

.calc-res-lbl {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Footer */
.footer {
  margin-top: auto;
  background: #04060b;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
}

/* Mobile Responsiveness */
@media (max-width: 860px) {
  .header-inner {
    height: 64px;
  }
  .nav-links {
    display: none;
  }
  .calc-row {
    grid-template-columns: 1fr;
  }
  .calc-results {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn-cta, .hero-buttons .btn-outline {
    width: 100%;
    justify-content: center;
  }
  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
}