/* -------------------------------------------------------------
   ZDRAVÝ MUŽ - FUTURISTIC CYBER-FITNESS STYLESHEET
   Geo: Czechia | Google Ads & GDPR Compliant Design System
------------------------------------------------------------- */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Orbitron:wght@600;700;800;900&display=swap');

:root {
  --bg-main: #060913;
  --bg-surface: #0b1120;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 34, 60, 0.85);
  --border-neon: rgba(0, 255, 136, 0.3);
  --border-cyan: rgba(0, 229, 255, 0.3);
  --border-subtle: rgba(255, 255, 255, 0.08);

  --neon-green: #00FF88;
  --neon-green-glow: rgba(0, 255, 136, 0.4);
  --neon-cyan: #00E5FF;
  --neon-cyan-glow: rgba(0, 229, 255, 0.4);
  --neon-purple: #9D4EDD;
  --neon-blue: #2563EB;
  --neon-amber: #FFB703;

  --text-bright: #FFFFFF;
  --text-main: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-cyber: 'Orbitron', sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 255, 136, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(0, 229, 255, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.5) 0%, transparent 100%);
  background-attachment: fixed;
}

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--neon-green);
  text-shadow: 0 0 10px var(--neon-green-glow);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-bright);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.font-cyber {
  font-family: var(--font-cyber);
  letter-spacing: 0.05em;
}

.text-gradient-green {
  background: linear-gradient(135deg, var(--neon-green) 0%, var(--neon-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, var(--neon-cyan) 0%, #3B82F6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-highlight {
  color: var(--neon-green);
  font-weight: 700;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 5rem 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 3rem 0;
  }
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Cyber Cards & Glassmorphism */
.cyber-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.cyber-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
  opacity: 0.3;
  transition: var(--transition);
}

.cyber-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-neon);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 255, 136, 0.15);
}

.cyber-card:hover::before {
  opacity: 1;
}

.cyber-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: var(--radius-full);
  color: var(--neon-green);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Header & Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 19, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 0;
  transition: var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-cyber);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--text-bright);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-main);
  font-weight: 900;
  box-shadow: 0 0 15px var(--neon-green-glow);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--neon-green);
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--neon-green);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-bright);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 868px) {
  .mobile-toggle { display: block; }
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-neon);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-150%);
    transition: var(--transition);
  }
  .nav-menu.active {
    transform: translateY(0);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem 2rem;
  font-family: var(--font-cyber);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-green) 0%, #00C86F 100%);
  color: #041209;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
  color: #041209;
}

.btn-cyan {
  background: linear-gradient(135deg, var(--neon-cyan) 0%, #00B4D8 100%);
  color: #03141F;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.6);
  color: #03141F;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-neon);
  color: var(--neon-green);
}

.btn-outline:hover {
  background: rgba(0, 255, 136, 0.1);
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.25);
  color: var(--text-bright);
}

.btn-lg {
  padding: 1.2rem 2.5rem;
  font-size: 1.05rem;
}

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

.hero-title {
  font-size: 3.2rem;
  margin: 1.2rem 0;
  line-height: 1.15;
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-image-wrapper {
  position: relative;
}

.hero-img-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border-neon);
  box-shadow: 0 0 35px rgba(0, 255, 136, 0.2);
}

.hero-img-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.hero-badge-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(11, 17, 32, 0.9);
  backdrop-filter: blur(12px);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-cyan);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.stat-item h4 {
  font-size: 1.8rem;
  color: var(--neon-green);
  font-family: var(--font-cyber);
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Interactive Calculator / Vitality Index Tool */
.calc-box {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.9) 0%, rgba(11, 17, 32, 0.95) 100%);
  border: 2px solid var(--border-neon);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 0 40px rgba(0, 255, 136, 0.15);
}

.calc-step {
  display: none;
}

.calc-step.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.calc-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

@media (max-width: 600px) {
  .calc-options { grid-template-columns: 1fr; }
}

.calc-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.calc-btn:hover, .calc-btn.selected {
  border-color: var(--neon-green);
  background: rgba(0, 255, 136, 0.1);
  color: var(--text-bright);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
}

.gauge-meter {
  width: 100%;
  height: 24px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 1.5rem 0;
  position: relative;
  border: 1px solid var(--border-cyan);
}

.gauge-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #FFB703 0%, var(--neon-cyan) 50%, var(--neon-green) 100%);
  transition: width 1s ease-in-out;
  border-radius: var(--radius-full);
  box-shadow: 0 0 15px var(--neon-green);
}

/* Offer Spotlight Section */
.offer-box {
  background: radial-gradient(circle at top right, rgba(0, 229, 255, 0.12), transparent 50%),
              rgba(11, 17, 32, 0.85);
  border: 2px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 3rem;
  margin: 3rem 0;
}

.offer-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 868px) {
  .offer-grid { grid-template-columns: 1fr; text-align: center; }
}

.offer-img-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-neon);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.25);
  background: rgba(0, 0, 0, 0.4);
  padding: 1rem;
}

.offer-features {
  list-style: none;
  margin: 1.5rem 0 2rem;
}

.offer-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
  font-size: 1.05rem;
}

.offer-features li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: rgba(0, 255, 136, 0.2);
  border: 1px solid var(--neon-green);
  border-radius: 50%;
  color: var(--neon-green);
  font-size: 0.8rem;
  font-weight: 900;
}

/* Certificates Badges Gallery */
.cert-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 2rem;
}

.cert-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  text-align: center;
  min-width: 170px;
  flex: 1;
  transition: var(--transition);
}

.cert-card:hover {
  border-color: var(--neon-green);
  background: rgba(0, 255, 136, 0.05);
}

.cert-icon {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  display: block;
}

.cert-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-bright);
}

.cert-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Lead Form Component (For order.html) */
.form-box {
  max-width: 540px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 2px solid var(--border-neon);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 0 50px rgba(0, 255, 136, 0.2);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-bright);
  font-size: 0.95rem;
}

.form-input {
  width: 100%;
  padding: 1rem 1.2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-bright);
  font-size: 1rem;
  font-family: var(--font-main);
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--neon-green);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
  background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder {
  color: var(--text-dim);
}

.secure-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* Articles & Content Layout */
.article-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.article-content {
  padding: 1.5rem 0 0;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.85rem;
  color: var(--neon-cyan);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.article-title {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.article-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* Cookie Banner (GDPR) */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 600px;
  margin: 0 auto;
  background: rgba(11, 17, 32, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  z-index: 1000;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
  display: none;
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from { transform: translateY(100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.cookie-btns {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

/* Footer & Legal Disclaimer */
.footer {
  background: #03050A;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 868px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 576px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-disclaimer {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
}