/* ============================================================
   BERG.LV — Premium Dark Corporate Design
   ============================================================ */

:root {
  --bg-primary:     #0a0a0f;
  --bg-secondary:   #0f0f1a;
  --bg-card:        rgba(255, 255, 255, 0.04);
  --bg-card-hover:  rgba(255, 255, 255, 0.07);
  --accent-cyan:    #00d4ff;
  --accent-purple:  #7c3aed;
  --accent-glow:    rgba(0, 212, 255, 0.15);
  --text-primary:   #f0f0f5;
  --text-secondary: #8888aa;
  --text-muted:     #55556a;
  --border-color:   rgba(255, 255, 255, 0.08);
  --border-accent:  rgba(0, 212, 255, 0.3);
  --font-main:      system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius:         12px;
  --radius-lg:      20px;
  --transition:     0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-glow:    0 0 40px rgba(0, 212, 255, 0.1);
}

/* ---- Badge row with language switcher ---- */
.hero__badge-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  animation: fadeInDown 0.8s ease 0.2s both;
}

.lang-switcher {
  display: inline-flex;
  gap: 0.15rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 20px;
  padding: 0.2rem;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.3rem 0.75rem;
  border-radius: 16px;
  color: #8888aa;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.15s ease;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.lang-btn:hover { color: #fff; background: rgba(255,255,255,0.1); }
.lang-btn.active { background: #00d4ff; color: #000; }

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

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

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fff; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-purple); border-radius: 3px; }

/* ============================================================
   HERO SECTION
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
  overflow: hidden;
}

/* Animated gradient background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124, 58, 237, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 20% 60%, rgba(124, 58, 237, 0.12) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index: 0;
}

@keyframes heroGlow {
  0%   { opacity: 0.7; transform: scale(1); }
  100% { opacity: 1;   transform: scale(1.05); }
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.hero__title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  background: linear-gradient(135deg, #fff 0%, var(--accent-cyan) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInDown 0.8s ease 0.4s both;
  margin-bottom: 1.5rem;
  text-shadow: none;
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  font-weight: 300;
  letter-spacing: 0.02em;
  animation: fadeInDown 0.8s ease 0.6s both;
  margin-bottom: 3rem;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.8s both;
}

/* QR code block */
.hero__qr {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  animation: fadeInUp 0.8s ease 1s both;
}

.qr-img {
  width: 160px;
  height: 160px;
  border-radius: 14px;
  border: 2px solid rgba(0, 212, 255, 0.35);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
  background: #0a0a0f;
  display: block;
}

.qr-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Webmail button under hero title */
.webmail-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
  padding: 0.75rem 1.75rem;
  background: rgba(0, 212, 255, 0.12);
  border: 2px solid var(--accent-cyan);
  border-radius: 50px;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  animation: fadeInDown 0.8s ease 0.6s both;
}

.webmail-btn:hover {
  background: var(--accent-cyan);
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: bounce 2s infinite;
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.scroll-indicator::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--border-accent);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
  color: var(--accent-cyan);
}

.btn-ghost {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section--alt {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.section__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   GLASS CARDS
   ============================================================ */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 2rem;
  transition: all var(--transition);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */

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

@media (min-width: 768px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
}

.about-name {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.about-title {
  font-size: 1rem;
  color: var(--accent-cyan);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.about-text {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
  display: block;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.25rem;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.contact-btn {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition);
  font-size: 0.9rem;
  font-weight: 500;
}

.contact-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.12);
}

.contact-btn__icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: rgba(0, 212, 255, 0.1);
}

.contact-btn__icon--phone   { background: rgba(34, 197, 94, 0.15); }
.contact-btn__icon--email   { background: rgba(0, 212, 255, 0.15); }
.contact-btn__icon--skype   { background: rgba(0, 175, 240, 0.15); }
.contact-btn__icon--threema { background: rgba(75, 181, 67, 0.15); }
.contact-btn__icon--qq      { background: rgba(18, 183, 245, 0.15); }
.contact-btn__icon--tg      { background: rgba(0, 136, 204, 0.15); }
.contact-btn__icon--wa      { background: rgba(37, 211, 102, 0.15); }
.contact-btn__icon--viber   { background: rgba(115, 92, 196, 0.15); }

.contact-btn__info {
  display: flex;
  flex-direction: column;
}

.contact-btn__label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-btn__value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   SOCIAL SECTION
   ============================================================ */

.social-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.12);
}

.social-link svg,
.social-link span.icon {
  width: 20px;
  height: 20px;
  font-size: 1.1rem;
}

/* ============================================================
   TOPBAR + LANGUAGE SWITCHER
   ============================================================ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.5rem;
  background: rgba(10,10,15,0.95);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  position: sticky;
  top: 0;
  z-index: 200;
  backdrop-filter: blur(12px);
}

.topbar__brand {
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.topbar__brand span { color: var(--accent-cyan); }

.lang-switcher {
  display: flex;
  gap: 0.25rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 0.25rem;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.18s ease;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.lang-btn:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.lang-btn.active {
  background: var(--accent-cyan);
  color: #000;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  text-align: center;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer__links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--accent-cyan); }

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

.footer__admin {
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.4;
  transition: opacity var(--transition);
}

.footer__admin:hover { opacity: 1; color: var(--accent-cyan); }

/* ============================================================
   ANIMATIONS
   ============================================================ */

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Intersection Observer animation classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(6) { transition-delay: 0.5s; }

/* ============================================================
   DIVIDER / GLOW LINE
   ============================================================ */

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
  margin: 0;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero__cta { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr; }
}

/* ============================================================
   UTILITY
   ============================================================ */

.text-cyan   { color: var(--accent-cyan); }
.text-purple { color: var(--accent-purple); }
.text-muted  { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}