/* ==========================================================================
   PSA ROtech UV Landing Page Styles
   Theme: Pure Water Aesthetic (Deep Sapphire Navy + Vibrant Aqua Cyan + Glass)
   Typography: Outfit (Headings) & Plus Jakarta Sans (Body)
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-dark: #07111e;
  --bg-card: rgba(13, 27, 46, 0.75);
  --bg-card-hover: rgba(19, 39, 66, 0.85);
  --bg-card-alt: #0a1728;
  --border-glass: rgba(0, 194, 255, 0.15);
  --border-light: rgba(255, 255, 255, 0.08);

  --primary: #00b4d8;
  --primary-hover: #0096c7;
  --primary-glow: rgba(0, 180, 216, 0.35);
  --accent-cyan: #48cae4;
  --accent-neon: #00f2fe;
  --accent-emerald: #10b981;
  --accent-danger: #ef4444;

  --text-main: #f0f7ff;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacings & Layout */
  --container-max: 1200px;
  --container-sm: 860px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
  font-size: 16px;
  color-scheme: dark;
}

section, [id] {
  scroll-margin-top: 85px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(0, 180, 216, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 60%, rgba(72, 202, 228, 0.06) 0%, transparent 45%);
  background-attachment: fixed;
}

/* Container Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-sm {
  max-width: var(--container-sm);
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: #ffffff;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, var(--accent-cyan) 60%, var(--accent-neon) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Top Announcement Bar */
.top-bar {
  background: linear-gradient(90deg, #0b2545 0%, #133a68 50%, #0b2545 100%);
  border-bottom: 1px solid rgba(0, 210, 255, 0.15);
  font-size: 0.85rem;
  padding: 0.55rem 0;
}

.top-bar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.top-bar p {
  color: #cbd5e1;
}

.top-link {
  color: var(--accent-neon);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.top-link:hover {
  text-decoration: underline;
  color: #ffffff;
}

/* Badges & Pills */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 9999px;
  background: rgba(0, 180, 216, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 180, 216, 0.3);
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 9999px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-neon);
  border: 1px solid rgba(0, 242, 254, 0.25);
  margin-bottom: 1.25rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-neon);
  box-shadow: 0 0 10px var(--accent-neon);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(7, 17, 30, 0.85);
  border-bottom: 1px solid var(--border-light);
  padding: 0.9rem 0;
  transition: var(--transition-smooth);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-symbol {
  font-size: 1.7rem;
  line-height: 1;
  filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.6));
}

.logo-brand {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: #ffffff;
  letter-spacing: -0.02em;
  display: block;
}

.logo-brand strong {
  color: var(--accent-cyan);
}

.logo-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--accent-neon);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.4rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, #0096c7 0%, #00b4d8 50%, #48cae4 100%);
  color: #071326;
  font-weight: 700;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 180, 216, 0.5);
  color: #030712;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 0.95rem 1.8rem;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

.btn svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.btn-lg svg {
  width: 26px;
  height: 26px;
}

.btn-sm svg {
  width: 18px;
  height: 18px;
}

/* Glass Panels */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 4.5rem 0 5rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-lead strong {
  color: #e2e8f0;
}

.hero-highlights {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2.25rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.98rem;
  color: #cbd5e1;
}

.check-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-light);
}

.stat-box {
  display: flex;
  flex-direction: column;
}

.stat-box strong {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.stat-box span {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 38px;
  background: var(--border-light);
}

/* Hero Video Card */
.video-card {
  overflow: hidden;
  position: relative;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 24px rgba(0, 180, 216, 0.15);
}

.video-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border-light);
  background: rgba(10, 23, 40, 0.8);
}

.video-badge {
  font-size: 0.8rem;
  font-weight: 600;
  color: #94a3b8;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.status-indicator .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

.video-wrapper {
  position: relative;
  width: 100%;
  background: #000;
  aspect-ratio: 9/14;
  max-height: 540px;
  overflow: hidden;
}

.video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1.25rem 1rem;
  background: linear-gradient(to top, rgba(7, 17, 30, 0.9) 0%, transparent 100%);
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.btn-play {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-cyan);
  color: #071326;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 242, 254, 0.5);
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.btn-play:hover {
  transform: scale(1.08);
}

.btn-play svg {
  width: 18px;
  height: 18px;
}

.video-caption {
  font-size: 0.85rem;
  color: #f1f5f9;
  font-weight: 500;
}

.video-card-footer {
  padding: 0.9rem 1.25rem;
  background: rgba(10, 23, 40, 0.9);
  border-top: 1px solid var(--border-light);
}

.guarantee-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.chip-icon {
  font-size: 1.4rem;
}

.guarantee-chip strong {
  display: block;
  font-size: 0.9rem;
  color: #ffffff;
}

.guarantee-chip small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Sections */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-alt {
  background-color: #050d18;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-dark {
  background: linear-gradient(180deg, #07111e 0%, #030810 100%);
}

.section-header {
  margin-bottom: 3.5rem;
}

.text-center {
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

/* Comparison Cards */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.comparison-card {
  padding: 2.25rem;
  border-radius: var(--radius-lg);
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
}

.card-negative {
  border-color: rgba(239, 68, 68, 0.25);
}

.card-positive {
  border-color: rgba(0, 242, 254, 0.35);
  box-shadow: 0 10px 32px rgba(0, 180, 216, 0.12);
  background: rgba(14, 30, 52, 0.85);
}

.card-badge {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 1rem;
  align-self: flex-start;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.comparison-card .card-title {
  font-size: 1.45rem;
  margin-bottom: 1.5rem;
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.comparison-list li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  font-size: 0.95rem;
  color: #cbd5e1;
}

.icon-cross {
  color: var(--accent-danger);
  font-size: 1.4rem;
  line-height: 1;
  font-weight: 700;
  flex-shrink: 0;
}

.icon-check {
  color: var(--accent-emerald);
  font-size: 1.2rem;
  line-height: 1.2;
  font-weight: 700;
  flex-shrink: 0;
}

/* Tabs Control */
.tabs-control {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.tab-btn {
  background: rgba(15, 31, 53, 0.7);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  padding: 0.9rem 1.8rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition-fast);
}

.tab-btn span {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
}

.tab-btn small {
  font-size: 0.78rem;
  margin-top: 0.15rem;
}

.tab-btn.active {
  background: rgba(0, 180, 216, 0.15);
  border-color: var(--accent-cyan);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 180, 216, 0.25);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Model Grid */
.model-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 3rem;
  padding: 2.5rem;
}

.model-media {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.model-gallery {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.model-img-wrapper {
  background: radial-gradient(circle at center, rgba(14, 165, 233, 0.08) 0%, rgba(10, 25, 47, 0.7) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 320px;
}

.model-img {
  width: auto;
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
  filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.5));
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.view-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-glass);
  color: var(--accent-cyan);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

.model-view-controls {
  display: flex;
  gap: 0.5rem;
}

.btn-view-toggle {
  flex: 1;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.btn-view-toggle:hover {
  background: rgba(3, 105, 161, 0.2);
  color: #fff;
  border-color: var(--accent-cyan);
}

.btn-view-toggle.active {
  background: rgba(3, 105, 161, 0.35);
  color: #fff;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
}

/* Model Media Showcase Cards (SM Video & BM Detail en proporción vertical nativa 9:16) */
.model-video-preview,
.model-secondary-thumb {
  position: relative;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(10, 25, 47, 0.95) 100%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 0.95rem;
  display: flex;
  align-items: center;
  gap: 1.15rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  transition: border-color 0.3s ease, transform 0.2s ease;
}

.model-video-preview:hover,
.model-secondary-thumb:hover {
  border-color: rgba(56, 189, 248, 0.45);
}

.media-card-visual {
  position: relative;
  width: 135px;
  min-width: 135px;
  aspect-ratio: 9 / 16;
  border-radius: 10px;
  overflow: hidden;
  background: #020617;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(56, 189, 248, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-card-visual video,
.media-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.preview-tag-mini {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(15, 23, 42, 0.85);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.btn-sound-toggle {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 2;
}

.btn-sound-toggle:hover {
  background: var(--accent-cyan);
  color: #020617;
  border-color: var(--accent-cyan);
}

.media-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.media-card-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  width: fit-content;
}

.media-card-pill .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

.media-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  line-height: 1.25;
}

.media-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

.media-card-desc strong {
  color: #e2e8f0;
}

.media-card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.media-card-chip {
  font-size: 0.7rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbd5e1;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.preview-tag {
  position: absolute;
  bottom: 8px;
  left: 10px;
  font-size: 0.75rem;
  background: rgba(0, 0, 0, 0.75);
  color: #ffffff;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.model-info {
  display: flex;
  flex-direction: column;
}

.model-title {
  font-size: 2rem;
  margin: 0.75rem 0 1rem;
}

.model-desc {
  color: var(--text-muted);
  font-size: 1.02rem;
  margin-bottom: 1.75rem;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
}

.feature-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.feature-item strong {
  display: block;
  font-size: 1rem;
  color: #ffffff;
}

.feature-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.model-cta {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.model-foot-note {
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* 5 Stages Section */
.stages-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.stage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.25rem;
  position: relative;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.stage-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
}

.stage-card-featured {
  border-color: rgba(0, 180, 216, 0.5);
  background: rgba(14, 33, 58, 0.9);
  box-shadow: 0 0 24px rgba(0, 180, 216, 0.2);
}

.stage-card-uv {
  border-color: rgba(168, 85, 247, 0.4);
  background: rgba(28, 18, 51, 0.8);
}

.stage-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-cyan);
  color: #071326;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  white-space: nowrap;
}

.stage-card-uv .stage-badge {
  background: #a855f7;
  color: #ffffff;
}

.stage-num {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-cyan);
  opacity: 0.7;
  margin-bottom: 0.75rem;
}

.stage-name {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.stage-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.stage-life {
  margin-top: auto;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-cyan);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
}

/* Certifications Strip */
.certifications-strip {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 1.75rem;
  background: rgba(10, 22, 38, 0.7);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}

.cert-item {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.cert-item strong {
  font-size: 0.95rem;
  color: #ffffff;
}

.cert-item span {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.2rem;
}

.cert-divider {
  width: 1px;
  height: 32px;
  background: var(--border-light);
}

/* Contaminants Retention Panel */
.contaminants-panel {
  margin-top: 3.5rem;
  margin-bottom: 2.5rem;
  padding: 2.5rem;
  background: rgba(11, 23, 44, 0.75);
  border: 1px solid rgba(0, 180, 216, 0.25);
  border-radius: var(--radius-xl);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
}

.contaminants-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 2.5rem auto;
}

.contaminants-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid rgba(0, 180, 216, 0.35);
  border-radius: 9999px;
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.contaminants-title {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  color: #ffffff;
  margin-bottom: 0.85rem;
  line-height: 1.25;
}

.contaminants-subtitle {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

.contaminants-subtitle strong {
  color: #ffffff;
}

/* 4 Highlights Grid */
.contaminants-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.contaminant-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.5rem;
  background: rgba(15, 30, 56, 0.6);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-normal), border-color var(--transition-normal);
  overflow: hidden;
}

.contaminant-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 180, 216, 0.4);
}

.contaminant-card.featured-arsenic {
  border-color: rgba(0, 180, 216, 0.6);
  background: linear-gradient(135deg, rgba(14, 38, 70, 0.85) 0%, rgba(10, 24, 46, 0.9) 100%);
  box-shadow: 0 0 28px rgba(0, 180, 216, 0.15);
}

.contaminant-icon-wrap {
  flex-shrink: 0;
  min-width: 66px;
  width: auto;
  height: 52px;
  padding: 0 0.55rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 180, 216, 0.15);
  border: 1px solid rgba(0, 180, 216, 0.4);
  border-radius: var(--radius-md);
  color: var(--accent-cyan);
  box-sizing: border-box;
}

.featured-arsenic .contaminant-icon-wrap {
  background: rgba(0, 180, 216, 0.25);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 180, 216, 0.35);
}

.contaminant-symbol {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  line-height: 1;
  text-align: center;
  display: inline-block;
}

.highlight-life {
  color: #ffffff;
  background: rgba(0, 180, 216, 0.22);
  border: 1px solid rgba(0, 180, 216, 0.5);
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  font-weight: 800;
  letter-spacing: 0.02em;
  display: inline-block;
  box-shadow: 0 0 12px rgba(0, 180, 216, 0.25);
}

.contaminant-info {
  flex: 1;
}

.contaminant-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.contaminant-meta h4 {
  font-size: 1.1rem;
  color: #ffffff;
  margin: 0;
}

.tag-status {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  background: rgba(0, 180, 216, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 180, 216, 0.3);
  text-transform: uppercase;
}

.featured-arsenic .tag-status {
  background: rgba(0, 180, 216, 0.25);
  color: #ffffff;
  border-color: var(--accent-cyan);
}

.contaminant-info p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* Full 16 Contaminants Badges Grid */
.contaminants-list-wrapper {
  padding: 1.5rem;
  background: rgba(8, 17, 32, 0.6);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}

.contaminants-list-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  text-align: center;
}

.contaminants-pills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
}

.pill-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  background: rgba(15, 30, 56, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pill-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
}

.pill-item.pill-highlight {
  background: rgba(0, 180, 216, 0.12);
  border-color: rgba(0, 180, 216, 0.35);
  color: #ffffff;
}

.pill-item.pill-highlight .dot {
  background: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

.pill-pct {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 180, 216, 0.12);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

/* Legal & Diagnostic Disclaimer */
.contaminants-footnote {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: rgba(0, 180, 216, 0.06);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: var(--radius-md);
}

.contaminants-footnote svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contaminants-footnote p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
  flex: 1;
}

.contaminants-footnote p strong {
  color: #ffffff;
}

.contaminants-footnote .btn {
  white-space: nowrap;
  flex-shrink: 0;
}

/* Responsive for Contaminants */
@media (max-width: 992px) {
  .contaminants-highlights {
    grid-template-columns: 1fr;
  }
  .contaminants-pills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contaminants-footnote {
    flex-direction: column;
    align-items: flex-start;
  }
  .contaminants-footnote .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .contaminants-panel {
    padding: 1.5rem 1rem;
  }
  .contaminants-pills-grid {
    grid-template-columns: 1fr;
  }
  .contaminant-card {
    flex-direction: column;
    gap: 0.75rem;
  }
  .contaminant-icon-wrap {
    min-width: 58px;
    width: auto;
    height: 42px;
    padding: 0 0.45rem;
  }
  .contaminant-symbol {
    font-size: 0.8rem;
  }
}

/* Calculator Card */
.calculator-card {
  padding: 3rem;
  max-width: 960px;
  margin: 0 auto;
}

.calc-lead {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* Calculator Controls */
.calc-inputs-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.calc-control {
  background: rgba(10, 24, 42, 0.85);
  border: 1px solid var(--border-light);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-label-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.calc-label-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: #ffffff;
}

.calc-badge {
  background: rgba(3, 105, 161, 0.35);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: var(--font-heading);
}

.calc-help-text {
  display: block;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.65rem;
}

/* Preset buttons for price */
.preset-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr 130px;
  gap: 0.6rem;
  align-items: stretch;
}

.btn-preset {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.5rem;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 52px;
  text-align: center;
}

.btn-preset span {
  font-size: 0.72rem;
  line-height: 1.2;
}

.btn-preset strong {
  font-size: 0.92rem;
  color: #ffffff;
  margin-top: 0.15rem;
}

.btn-preset:hover {
  background: rgba(3, 105, 161, 0.2);
  border-color: var(--accent-cyan);
}

.btn-preset.active {
  background: rgba(3, 105, 161, 0.35);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
}

.btn-preset.active strong {
  color: var(--accent-cyan);
}

.custom-price-wrapper {
  position: relative;
  width: 100%;
}

.custom-price-wrapper input {
  width: 100%;
  padding: 0.65rem 0.5rem 0.65rem 1.6rem;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  height: 52px;
}

.custom-price-wrapper input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.3);
}

.custom-price-wrapper .prefix {
  position: absolute;
  left: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-weight: 700;
  pointer-events: none;
}

#bidonesSlider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #1e293b;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

#bidonesSlider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan);
  cursor: pointer;
  transition: transform 0.1s;
}

#bidonesSlider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

/* Calculator Results */
.calc-results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.result-box {
  background: rgba(10, 23, 40, 0.65);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.result-box.result-highlight {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.08);
}

.result-badge {
  display: inline-block;
  align-self: center;
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}

.result-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: block;
}

.result-val {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  color: #ffffff;
  display: block;
  margin: 0.35rem 0;
  line-height: 1.2;
}

.result-val.text-warning {
  color: #fbbf24;
}

.result-val.text-danger {
  color: #f87171;
}

.result-highlight .result-val {
  color: #34d399;
}

.result-box small {
  font-size: 0.78rem;
  color: var(--text-dim);
  display: block;
}

/* Comparison Box */
.calc-comparison-box {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(3, 105, 161, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  margin-top: 1.75rem;
}

.comparison-icon {
  font-size: 2.2rem;
  line-height: 1;
  flex-shrink: 0;
}

.comparison-text {
  flex: 1;
}

.comparison-text h4 {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.comparison-text p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
  line-height: 1.45;
}

.comparison-text strong {
  color: var(--accent-cyan);
}

/* Turnero / Booking Form Section */
.section-form {
  background: radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(72, 202, 228, 0.08) 0%, transparent 50%);
}

.turnero-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3.5rem;
  align-items: center;
}

.turnero-title {
  font-size: 2.3rem;
  margin-bottom: 1rem;
}

.turnero-lead {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.turnero-perks {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.perk-item {
  display: flex;
  gap: 1rem;
}

.perk-icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
}

.perk-item strong {
  display: block;
  font-size: 1rem;
  color: #ffffff;
}

.perk-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.turnero-card {
  padding: 2.5rem;
}

.form-title {
  font-size: 1.6rem;
  margin-bottom: 0.4rem;
}

.form-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.booking-form .form-group {
  margin-bottom: 1.25rem;
}

.booking-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.booking-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 0.4rem;
}

.booking-form input,
.booking-form select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(10, 22, 38, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.booking-form input:focus,
.booking-form select:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.2);
}

.booking-form select option {
  background: #0b192c;
  color: #ffffff;
}

.form-privacy {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: 1rem;
}

/* FAQ Accordion */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.accordion-item:hover {
  border-color: var(--border-glass);
}

.accordion-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.accordion-icon {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--accent-cyan);
  transition: transform 0.3s ease;
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.5rem;
}

.accordion-item.open .accordion-body {
  max-height: 400px;
  padding-bottom: 1.25rem;
  transition: max-height 0.35s ease-in;
}

.accordion-body p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Footer */
.footer {
  background: #030810;
  border-top: 1px solid var(--border-light);
  padding: 4.5rem 0 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-logo {
  margin-bottom: 1rem;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.footer-title {
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  color: #ffffff;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links li,
.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.legal-notice {
  font-size: 0.76rem;
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 900px;
  margin: 0 auto 1rem;
}

.copyright {
  font-size: 0.8rem;
  color: #475569;
}

.copyright a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.copyright a:hover {
  color: var(--accent-neon);
  text-decoration: underline;
}

/* Floating WhatsApp Button */
.wa-floating-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
}

.wa-floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: #25d366;
  color: #ffffff;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
  text-decoration: none;
  position: relative;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.wa-floating-btn:hover {
  transform: scale(1.12);
}

.wa-floating-btn svg {
  width: 38px;
  height: 38px;
  display: block;
}

#btnHeroWhatsapp svg {
  width: 26px;
  height: 26px;
}

.wa-tooltip {
  position: absolute;
  right: 76px;
  background: rgba(7, 17, 30, 0.95);
  border: 1px solid var(--border-glass);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity 0.3s, transform 0.3s;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.wa-floating-btn:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* Modal Dialog */
.modal-dialog {
  border: none;
  background: transparent;
  padding: 1rem;
  margin: auto;
  max-width: 480px;
  width: 90%;
}

.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
}

.modal-content {
  padding: 2.5rem;
  text-align: center;
  border-radius: var(--radius-lg);
}

.modal-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.modal-title {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
}

.modal-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Responsive Media Queries */

/* Tablet Landscape / Large Tablet */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .calc-inputs-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .stages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .turnero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

/* Tablet Portrait & Mobile Devices */
@media (max-width: 768px) {
  /* Header & Navigation */
  .top-bar-content {
    flex-direction: column;
    text-align: center;
    gap: 0.3rem;
    font-size: 0.78rem;
  }

  .nav-links {
    display: none;
  }

  .logo-sub {
    display: none;
  }

  .logo-brand {
    font-size: 1.18rem;
  }

  .nav-actions .btn-sm {
    padding: 0.45rem 0.8rem;
    font-size: 0.8rem;
  }

  /* General Sections & Headings */
  .section {
    padding: 55px 0;
  }

  .section-title {
    font-size: 1.8rem;
    line-height: 1.2;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  .section-tag {
    font-size: 0.72rem;
  }

  /* Hero Section */
  .hero {
    padding: 3.5rem 0 2.5rem;
  }

  .hero-title {
    font-size: 2.1rem;
    line-height: 1.15;
  }

  .hero-stats {
    gap: 0.75rem;
    justify-content: space-between;
    padding-top: 1.25rem;
  }

  .stat-box strong {
    font-size: 1.45rem;
  }

  .stat-box span {
    font-size: 0.75rem;
  }

  /* Comparison Problem Section */
  .comparison-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .comparison-card {
    padding: 1.5rem 1.1rem;
  }

  /* Model Switcher & Cards */
  .tabs-control {
    gap: 0.5rem;
    margin-bottom: 1.75rem;
  }

  .tab-btn {
    flex: 1;
    padding: 0.75rem 0.6rem;
    text-align: center;
  }

  .tab-btn span {
    font-size: 0.95rem;
  }

  .tab-btn small {
    font-size: 0.72rem;
  }

  .model-grid {
    grid-template-columns: 1fr;
    padding: 1.35rem 1rem;
    gap: 2rem;
  }

  .model-img-wrapper {
    min-height: 240px;
    padding: 1rem;
  }

  .model-img {
    max-height: 220px;
  }

  .model-specs {
    grid-template-columns: 1fr;
  }

  .model-video-preview,
  .model-secondary-thumb {
    padding: 0.85rem;
    gap: 0.9rem;
  }

  .media-card-visual {
    width: 110px;
    min-width: 110px;
  }

  .media-card-title {
    font-size: 0.92rem;
  }

  .media-card-desc {
    font-size: 0.78rem;
  }

  /* Stages Grid (5 Etapas) */
  .stages-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .stage-card {
    padding: 1.35rem 1.1rem;
  }

  /* Calculator Section: Resilient Responsive Fixes */
  .calculator-card {
    padding: 1.6rem 1.1rem;
    border-radius: var(--radius-md);
  }

  .calc-lead {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
  }

  .calc-inputs-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
  }

  .calc-control {
    padding: 1.25rem 1rem;
  }

  .calc-label-header {
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.85rem;
  }

  .calc-label-title {
    font-size: 0.92rem;
  }

  .calc-badge {
    font-size: 0.88rem;
    padding: 0.2rem 0.55rem;
  }

  .preset-buttons {
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
  }

  .custom-price-wrapper {
    grid-column: 1 / -1;
    width: 100%;
  }

  .custom-price-wrapper input {
    height: 48px;
    width: 100%;
    font-size: 0.88rem;
  }

  .btn-preset {
    min-height: 48px;
    padding: 0.55rem 0.45rem;
  }

  .btn-preset span {
    font-size: 0.7rem;
  }

  .btn-preset strong {
    font-size: 0.88rem;
  }

  .calc-results-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .result-box {
    padding: 1.1rem 0.75rem;
  }

  .result-val {
    font-size: 1.45rem;
    margin: 0.25rem 0;
  }

  .result-label {
    font-size: 0.75rem;
  }

  .result-box small {
    font-size: 0.72rem;
  }

  .calc-comparison-box {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem 1rem;
    gap: 1rem;
  }

  .calc-comparison-box .btn {
    width: 100%;
    justify-content: center;
  }

  /* Booking Form (Turnero) */
  .turnero-card {
    padding: 1.6rem 1.1rem;
  }

  .form-title {
    font-size: 1.45rem;
  }

  .booking-form .form-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .booking-form input,
  .booking-form select {
    padding: 0.75rem 0.85rem;
    font-size: 0.9rem;
  }

  .btn-block {
    width: 100%;
    justify-content: center;
  }

  /* Certifications & Footer */
  .certifications-strip {
    flex-direction: column;
    gap: 1.1rem;
  }

  .cert-divider {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .wa-tooltip {
    display: none;
  }

  .wa-floating-container {
    bottom: 1rem;
    right: 1rem;
  }

  .wa-floating-btn {
    width: 58px;
    height: 58px;
  }

  .wa-floating-btn svg {
    width: 34px;
    height: 34px;
  }
}

/* Smartphone Small to Medium (Screens <= 480px) */
@media (max-width: 480px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-cta-group {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    gap: 0.35rem;
  }

  .stat-box strong {
    font-size: 1.35rem;
  }

  .stat-box span {
    font-size: 0.68rem;
  }

  .section {
    padding: 45px 0;
  }

  .section-title {
    font-size: 1.55rem;
  }

  .calculator-card {
    padding: 1.25rem 0.75rem;
  }

  .calc-control {
    padding: 1rem 0.75rem;
  }

  .calc-results-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .result-box {
    padding: 0.85rem 0.5rem;
  }

  .result-val {
    font-size: 1.25rem;
  }

  .result-label {
    font-size: 0.7rem;
  }

  .result-badge {
    font-size: 0.65rem;
    padding: 0.15rem 0.35rem;
  }

  .result-box small {
    font-size: 0.68rem;
  }

  .turnero-card {
    padding: 1.25rem 0.75rem;
  }
}

/* Ultra-compact screens (Screens <= 360px) */
@media (max-width: 360px) {
  .calc-results-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .preset-buttons {
    grid-template-columns: 1fr;
  }
}