/* Telegram Wallet Landing Page Stylesheet - Premium Design System */

:root {
  /* Backgrounds */
  --bg-dark:       #06070d;
  --bg-card:       rgba(15, 17, 28, 0.65);
  --bg-card-hover: rgba(22, 25, 40, 0.9);
  --bg-alt:        rgba(10, 12, 20, 0.5);

  /* Borders */
  --border-color:       rgba(255, 255, 255, 0.07);
  --border-color-hover: rgba(42, 171, 238, 0.3);

  /* Telegram Wallet Accents */
  --color-primary:      #2AABEE;
  --color-primary-glow: rgba(42, 171, 238, 0.35);
  --color-primary-dim:  rgba(42, 171, 238, 0.12);
  --color-accent:       #229ED9;
  
  /* Utilities */
  --color-green: #10B981;
  --color-red:   #EF4444;
  --color-yellow:#F59E0B;

  /* Typography */
  --text-main:  #F0F2F8;
  --text-muted: #8B92A8;
  --text-dim:   #7E859E;

  /* Font */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Transitions */
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --focus-ring: 0 0 0 3px rgba(42, 171, 238, 0.4);
}

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

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

html[lang="uk"] .lang-en { display: none !important; }
html[lang="en"] .lang-uk { display: none !important; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

ul { list-style: none; }
button { font-family: var(--font-sans); }

/* === Focus Indicators === */
:focus-visible {
  outline: 3px solid var(--color-primary) !important;
  outline-offset: 3px !important;
  border-radius: 4px;
}

/* === Layout === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* === Header === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 7, 13, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 64px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  flex-shrink: 0;
}
.logo-accent { color: var(--color-primary); }

.hub-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.hub-nav-link {
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* === Lang Switcher === */
.lang-switcher {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 3px;
  flex-shrink: 0;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 7px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.03em;
}

.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
}

.lang-btn:hover:not(.active) {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

/* Mobile Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 10px;
  transition: all 0.3s linear;
  position: relative;
  transform-origin: 1px;
}
@media (max-width: 860px) {
  .hamburger { display: flex; }
  .hub-nav { display: none; }
}

/* === Hero Section === */
.hero-section {
  position: relative;
  padding: 5.5rem 0 4rem;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(42, 171, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 171, 238, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.hero-orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.2;
}

.orb-1 {
  width: 500px; height: 500px;
  background: var(--color-primary);
  top: -100px; left: -100px;
}

.orb-2 {
  width: 400px; height: 400px;
  background: var(--color-accent);
  bottom: 0px; right: -50px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

@media (max-width: 968px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    text-align: center;
  }
}

.hero-content {
  max-width: 650px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 968px) {
  .hero-badges { justify-content: center; }
}

.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(42, 171, 238, 0.3);
  background: var(--color-primary-dim);
  border-radius: 100px;
  padding: 6px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.verified-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}
.verified-badge svg { color: var(--color-green); }

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #ffffff 30%, #a2ddff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-wrap: balance;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.cta-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (max-width: 968px) {
  .cta-container { align-items: center; }
}

.cta-primary-wrapper {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, #1A82C0 100%);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 1.15rem 2.25rem;
  border-radius: 12px;
  box-shadow: 0 8px 25px var(--color-primary-glow);
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  width: 100%;
  max-width: 500px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(42, 171, 238, 0.45);
  filter: brightness(1.05);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn:active {
  transform: translateY(1px);
}

.cta-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}
.cta-hint svg { color: var(--color-primary); }

/* Premium Terminal Visual */
.terminal-visual-container {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  perspective: 1000px;
}

.terminal-glass {
  background: rgba(15, 17, 28, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.5), 
    inset 0 1px 1px rgba(255, 255, 255, 0.15);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-align: left;
  transform: rotateY(-5deg) rotateX(5deg);
  transition: var(--transition);
}

.terminal-visual-container:hover .terminal-glass {
  transform: translateY(-5px) rotateY(-2deg) rotateX(2deg);
  box-shadow: 
    -10px 28px 60px rgba(0, 0, 0, 0.6), 
    0 0 30px var(--color-primary-glow);
}

.terminal-header {
  background: rgba(255, 255, 255, 0.03);
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red { background-color: var(--color-red); }
.dot-yellow { background-color: var(--color-yellow); }
.dot-green { background-color: var(--color-green); }

.terminal-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.terminal-icon {
  color: var(--color-primary);
  opacity: 0.8;
}

.terminal-body {
  padding: 1.5rem;
  min-height: 240px;
  color: #93C5FD;
}

.terminal-line {
  margin-bottom: 0.85rem;
  line-height: 1.6;
}

.terminal-input { color: var(--text-main); }
.terminal-input::before {
  content: "$ ";
  color: var(--color-primary);
}

.terminal-success { color: var(--color-green); }
.terminal-comment { color: var(--text-dim); }
.terminal-highlight { color: #2AABEE; text-shadow: 0 0 10px rgba(42, 171, 238, 0.3); font-weight: 600; }

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background-color: var(--text-main);
  animation: blink 1s step-end infinite;
  vertical-align: middle;
  margin-top: 10px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.terminal-shadow {
  position: absolute;
  bottom: -20px;
  left: 5%;
  width: 90%;
  height: 20px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
  filter: blur(15px);
  z-index: -1;
  transition: var(--transition);
}

.terminal-visual-container:hover .terminal-shadow {
  transform: scale(0.95);
  filter: blur(20px);
  opacity: 0.7;
}

/* === Common Sections === */
.section-padding { padding: 5.5rem 0; }

.section-title-wrapper {
  text-align: center;
  margin-bottom: 3.5rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #fff, var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.6;
}

/* === Features Section === */
.features-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 968px) {
  .features-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 2.25rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary-dim);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px var(--color-primary-glow);
  background: var(--bg-card-hover);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  background: var(--color-primary-dim);
  border: 1px solid rgba(42, 171, 238, 0.25);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-box {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.05);
  box-shadow: 0 5px 15px var(--color-primary-glow);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

/* === Articles Section === */
.articles-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 850px;
  margin: 0 auto;
}

.article-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  transition: var(--transition);
  text-decoration: none;
}

.article-card-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .article-card-inner { flex-direction: column; text-align: center; gap: 1rem; }
}

.article-icon {
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.03);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  flex-shrink: 0;
}

.article-title {
  flex-grow: 1;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  transition: var(--transition);
}

.article-readmore {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  opacity: 0.8;
  transition: var(--transition);
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--color-primary-dim);
  transform: translateX(5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}
@media (max-width: 640px) { .article-card:hover { transform: translateY(-5px); } }

.article-card:hover .article-title { color: #ffffff; }
.article-card:hover .article-readmore { opacity: 1; transform: translateX(3px); }

/* === FAQ Section === */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(255,255,255,0.15);
  background: var(--bg-card-hover);
}

.faq-question {
  width: 100%;
  padding: 1.5rem;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  outline: none;
  transition: var(--transition);
}

.faq-question:focus-visible {
  background: rgba(255,255,255,0.05);
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(0, 0, 0, 0.2);
}

.faq-answer-inner {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--text-dim);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-item.active {
  border-color: var(--color-primary-dim);
  box-shadow: 0 4px 20px rgba(42, 171, 238, 0.08);
}