:root {
  --bg-forest: #000c07;
  --accent-green: #00ff87;
  --border-line: rgba(0, 255, 135, 0.08);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --vh: 1vh;
}

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

html {
  scroll-behavior: smooth;
  width: 100%;
  max-width: 100vw;
}

body {
  background: var(--bg-forest);
  color: var(--text-main);
  font-family: Inter, Arial, sans-serif;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  margin: 0;
  overscroll-behavior-y: none; 
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(var(--border-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-line) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  width: 700px;
  height: 700px;
  left: 50%;
  top: -300px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0, 255, 135, 0.12), transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
}

#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 88px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-inline: clamp(20px, 5vw, 70px);
  transition:
    background 0.35s ease,
    backdrop-filter 0.35s ease,
    border-color 0.35s ease;
  border-bottom: 1px solid transparent;
  z-index: 9999;
}

#brand {
  position: relative;
  display: flex;
  align-items: center;
  height: 52px;
  width: max-content;
  text-decoration: none;
}

.logo-parts {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 0px;
}

#navText {
  height: 100%;
  width: auto;
  max-height: 100%;
  object-fit: contain;
  opacity: 0;
  will-change: transform, opacity;
  flex-shrink: 0;
}

#fullLogo {
  position: absolute;
  left: 0;
  top: 50%;
  height: 100%;
  max-height: 100%;
  width: auto;
  transform: translateY(-50%);
  opacity: 0;
  z-index: 2;
  will-change: opacity;
  object-fit: contain;
}

#ghost4 {
  height: 100%;
  width: auto;
  opacity: 0;
  visibility: hidden;
  margin-left: auto;
  flex-wrap: nowrap;
}

.nav-right-controls {
  display: flex;
  align-items: center;
  gap: 15px;
  position: relative;
  z-index: 9999;
}

#hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 10000;
  padding: 0;
  position: relative;
  flex-shrink: 0;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.35s ease,
    visibility 0.35s ease;
}

#hamburger.visible {
  opacity: 1;
  visibility: visible;
}

#hamburger .line {
  position: absolute;
  width: 26px;
  height: 2px;
  background-color: var(--accent-green);
  transition:
    transform 0.3s ease,
    background-color 0.3s ease;
  border-radius: 2px;
}

#hamburger .line1 {
  transform: translateY(-5px);
}

#hamburger .line2 {
  transform: translateY(5px);
}

#hamburger.active .line1 {
  transform: translateY(0) rotate(45deg);
}

#hamburger.active .line2 {
  transform: translateY(0) rotate(-45deg);
}

#menu {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 22px;
  list-style: none;
  position: absolute;
  right: clamp(20px, 5vw, 70px);
  top: 45%;
  transform: translateY(-50%);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  z-index: 10000;
}

#menu li {
  position: relative;
}

#menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(248, 250, 252, 0.65);
  text-decoration: none;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -1px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  flex-direction: row-reverse;
}

#menu i {
  display: inline-block;
  font-size: 1.3rem;
  color: var(--accent-green);
  opacity: 0.7;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

#menu a:hover {
  color: var(--accent-green);
  transform: translateX(-8px);
  text-shadow: 0 0 20px rgba(0, 255, 135, 0.4);
}

#menu a:hover i {
  opacity: 1;
  transform: scale(1.1);
}

#menu a.active-link {
  color: var(--accent-green) !important;
  text-shadow: 0 0 15px rgba(0, 255, 135, 0.5);
}

#menu a.active-link span {
  color: var(--accent-green) !important;
}

#menu a.active-link i {
  opacity: 1;
  transform: scale(1.1);
  color: var(--accent-green) !important;
}

#menu a.disabled-link {
  opacity: 0.35;
  pointer-events: none;
  cursor: default;
  filter: grayscale(100%);
}

#menu a.disabled-link:hover {
  transform: none !important;
  color: rgba(248, 250, 252, 0.65) !important;
  text-shadow: none !important;
}

#menu a.disabled-link:hover i {
  opacity: 0.7 !important;
  transform: none !important;
}

.coming-soon-badge {
  position: absolute;
  bottom: -14px;
  right: 0;
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0px;
  color: var(--text-muted);
  background: rgba(255, 255, 135, 0.05);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  text-transform: uppercase;
}

@media (min-width: 769px) {
  #menu.fixed-nav {
    position: fixed;
    top: 0;
    right: clamp(20px, 5vw, 70px); 
    height: 88px;
    flex-direction: row !important;
    align-items: center;
    gap: 30px;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    display: flex !important;
    z-index: 10001;
  }

  #menu.fixed-nav li {
    animation: slideInFromLeft 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
  }

  #menu.fixed-nav li:nth-child(1) { animation-delay: 0.03s; }
  #menu.fixed-nav li:nth-child(2) { animation-delay: 0.06s; }
  #menu.fixed-nav li:nth-child(3) { animation-delay: 0.09s; }
  #menu.fixed-nav li:nth-child(4) { animation-delay: 0.12s; }
  #menu.fixed-nav li:nth-child(5) { animation-delay: 0.15s; }

  #menu.fixed-nav a {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.3px;
    flex-direction: column !important;
    align-items: center;
    gap: 4px;
    color: rgba(248, 250, 252, 0.75);
    line-height: 1;
  }

  #menu.fixed-nav i {
    font-size: 1.1rem;
  }

  #menu.fixed-nav a:hover {
    transform: translateY(0);
    color: var(--accent-green);
  }

  #menu.fixed-nav a.active-link {
    color: var(--accent-green) !important;
    text-shadow: 0 0 12px rgba(0, 255, 135, 0.4);
  }

  #menu.fixed-nav a.active-link span {
    color: var(--accent-green) !important;
  }

  #menu.fixed-nav a.active-link i {
    color: var(--accent-green) !important;
  }

  #menu.fixed-nav a.disabled-link {
    opacity: 0.35;
    pointer-events: none;
  }

  #menu.fixed-nav a.disabled-link:hover {
    color: rgba(248, 250, 252, 0.75) !important;
    transform: translateY(0) !important;
  }

  #menu.fixed-nav .coming-soon-badge {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    bottom: -16px;
    white-space: nowrap;
  }
}

@media (max-width: 768px) {
  #hamburger {
    display: flex;
    z-index: 10000;
  }
  .footer-action {
    display: none;
  }

  #menu::after {
    content: "© 2026 TETR4 DIGITAL";
    position: absolute;
    bottom: 35px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 0.8rem;
    white-space: nowrap;
  }

  #menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    height: calc(var(--vh, 1vh) * 100);
    background: rgba(0, 12, 7, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column !important;
    justify-content: center;
    align-items: center;
    gap: 32px;
    padding-top: 80px;
    padding-bottom: 40px;
    box-sizing: border-box;
    transition: right 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 5000;
    transform: none !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: none;
  }

  #menu.active {
    right: 0 !important;
    pointer-events: auto !important;
  }

  #menu a {
    font-size: 1.5rem;
    flex-direction: row-reverse !important;
    gap: 15px;
    color: rgba(248, 250, 252, 0.85);
  }

  #menu i {
    font-size: 1.3rem;
  }

  #menu a:hover {
    transform: translateX(-8px);
    color: var(--accent-green);
  }

  .coming-soon-badge {
    bottom: -14px;
    right: 0;
  }
}

@keyframes slideInFromLeft {
  0% {
    opacity: 0;
    transform: translateX(-30px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

#hero {
  height: 100vh;
  height: 100dvh;
  height: calc(var(--vh, 1vh) * 100);
  display: flex;
  justify-content: flex-start;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-inline: clamp(20px, 5vw, 70px);
}

#heroLogo {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  width: max-content;
  height: max-content;
  display: flex;
  justify-content: center;
  align-items: center;
  will-change: transform, opacity;
  backface-visibility: hidden;
  pointer-events: none;
}

#logo4 {
  width: clamp(220px, 42vw, 620px);
  user-select: none;
  pointer-events: none;
  filter: drop-shadow(0 0 20px rgba(0, 255, 135, 0.2))
    drop-shadow(0 0 80px rgba(0, 255, 135, 0.12));
  display: block;
}

section:not(#hero) {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: clamp(60px, 8vw, 120px) clamp(20px, 5vw, 70px);
  padding-top: calc(88px + clamp(30px, 5vw, 60px));
}

@media (max-width: 768px) {
  section:not(#hero) {
    padding-top: 120px;
    align-items: flex-start;
  }

  #Tetr4Lab,
  #Tetr4Studio {
    justify-content: flex-start;
    padding-top: 120px;
  }
}

section h2 {
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 700;
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -2px;
}

h1 {
  font-size: clamp(2rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 3rem;
  max-width: 850px;
  font-family: "Space Grotesk", sans-serif;
  text-align: left;
  opacity: 0;
  transform: translateX(-100px);
}

h1 span {
  opacity: 0.25;
  font-weight: 300;
}

@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 2rem;
    margin-left: 0;
    padding-right: 0;
    max-width: 100%;
  }
}

#Tetr4Lab {
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

#Tetr4Studio {
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-bottom: 180px; 
}

.lab-container,
.design-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.lab-container .section-header,
.design-container .section-header {
  margin-bottom: 40px;
}

.lab-container .section-header p,
.design-container .section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 10px;
  font-family: "Space Grotesk", sans-serif;
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  width: 100%;
}

.lab-card {
  background: rgba(0, 255, 135, 0.02);
  border: 1px solid var(--border-line);
  border-radius: 16px;
  padding: clamp(25px, 4vw, 35px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  width: 100%;
}

.lab-card:hover {
  border-color: var(--accent-green);
  transform: translateY(-8px);
  background: rgba(0, 255, 135, 0.04);
  box-shadow: 0 10px 30px rgba(0, 255, 135, 0.08);
}

.lab-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-green);
  background: rgba(0, 255, 135, 0.1);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 20px;
}

.lab-card h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.lab-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.idea-form-box {
  background: rgba(0, 255, 135, 0.02);
  border: 1px solid var(--border-line);
  border-radius: 16px;
  padding: clamp(25px, 4vw, 40px);
  width: 100%;
  max-width: 600px;
  transition: border-color 0.4s ease;
}

.idea-form-box:hover {
  border-color: rgba(0, 255, 135, 0.25);
}

.idea-form-box h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.idea-form-box > p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 30px;
}

.idea-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(0, 12, 7, 0.6);
  border: 1px solid var(--border-line);
  border-radius: 10px;
  padding: 15px 20px;
  color: var(--text-main);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 15px rgba(0, 255, 135, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.form-group textarea {
  resize: none;
  height: 140px;
}

.submit-btn {
  background: transparent;
  border: 2px solid var(--accent-green);
  color: var(--accent-green);
  padding: 14px 30px;
  border-radius: 30px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  width: 100%;
}

.submit-btn:hover {
  background: var(--accent-green);
  color: var(--bg-forest);
  box-shadow: 0 0 20px rgba(0, 255, 135, 0.3);
}

.form-submit-row {
  display: flex;
  align-items: center;
  margin-top: 15px;
  width: 100%;
}

#scrollTopBtn {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(0, 12, 7, 0.85);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  width: 55px;
  height: 55px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition:
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.3s ease,
    background 0.3s ease,
    color 0.3s ease,
    box-shadow 0.3s ease;
  box-shadow: 0 0 15px rgba(0, 255, 135, 0.15);
}

#scrollTopBtn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

#scrollTopBtn.absolute {
  position: absolute;
  bottom: 110px;
  transform: translateX(-50%) translateY(0);
}

#scrollTopBtn:hover {
  background: var(--accent-green);
  color: var(--bg-forest);
  box-shadow: 0 0 25px rgba(0, 255, 135, 0.4);
  transform: translateX(-50%) translateY(0);
}

#scrollTopBtn.absolute:hover {
  transform: translateX(-50%) translateY(0);
}

.footer-action {
  width: 100%;
  padding: 40px clamp(20px, 5vw, 70px);
  background: var(--bg-forest);
  border-top: 1px solid var(--border-line);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 10;
}

.footer-info {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: "Space Grotesk", sans-serif;
  flex-wrap: wrap;
  justify-content: center;
  text-align: center;
}

.footer-info a {
  color: var(--text-muted);
  text-decoration: none;
  transition:
    color 0.3s ease,
    transform 0.3s ease;
  display: inline-flex;
  align-items: center;
}

.footer-info a:hover {
  color: var(--accent-green);
}

.footer-info i {
  font-size: 1.1rem;
  margin-left: 5px;
}

@media (max-width: 576px) {
  .footer-info {
    flex-direction: row;
    gap: 12px;
    text-align: center;
    font-size: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
  }
}

html,
body {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar,
*::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.design-content-grid {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

@media (max-width: 992px) {
  .design-content-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.design-visual-box {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.terminal-window {
  width: 100%;
  min-height: 420px;
  background: rgba(0, 6, 3, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(0, 255, 135, 0.2);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow:
    0 25px 50px rgba(0, 0, 0, 0.5),
    inset 0 0 25px rgba(0, 255, 135, 0.03);
}

.terminal-header {
  background: rgba(0, 255, 135, 0.04);
  border-bottom: 1px solid var(--border-line);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  position: relative;
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.terminal-dots .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.terminal-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: "Space Grotesk", monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: -0.2px;
}

.terminal-body {
  padding: 20px;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.85rem;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  max-height: 380px;
  word-break: break-word;
}

.terminal-line {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  word-break: break-all;
}

.terminal-line .prompt {
  color: var(--accent-green);
  font-weight: bold;
}

.terminal-line.muted { color: var(--text-muted); }
.terminal-line.success { color: var(--accent-green); }
.terminal-line.highlight { color: #38bdf8; }

.about-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 12, 7, 0.4); 
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10005;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.about-overlay.show {
  opacity: 1;
  visibility: visible;
}

.floating-about-btn {
  position: fixed;
  bottom: 30px;
  right: clamp(20px, 5vw, 70px); 
  width: 55px;
  height: 55px;
  border-radius: 30px;
  background: rgba(0, 12, 7, 0.85);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 0 15px rgba(0, 255, 135, 0.15);
  cursor: pointer;
  z-index: 10006;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  font-size: 1.2rem;
  overflow: hidden; 
  white-space: nowrap;
  
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-about-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.floating-about-btn i {
  min-width: 55px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.floating-about-btn span {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s ease;
}

.floating-about-btn:hover {
  width: 165px; 
  background: var(--accent-green);
  color: var(--bg-forest);
  box-shadow: 0 0 25px rgba(0, 255, 135, 0.4);
}

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

.floating-lang-btn {
  position: fixed;
  bottom: 30px;
  left: clamp(20px, 5vw, 70px); 
  width: 55px;
  height: 55px;
  border-radius: 30px;
  background: rgba(0, 12, 7, 0.85);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 0 15px rgba(0, 255, 135, 0.15);
  cursor: pointer;
  z-index: 10006;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-size: 1.2rem;
  overflow: hidden; 
  white-space: nowrap;
  text-decoration: none;
  
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-lang-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.floating-lang-btn i {
  min-width: 55px;
  display: flex;
  justify-content: center;
  align-items: center;
  order: 2;
}

.floating-lang-btn span {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
  order: 1;
  padding-left: 15px;
}

.floating-lang-btn:hover {
  width: 155px; 
  background: var(--accent-green);
  color: var(--bg-forest);
  box-shadow: 0 0 25px rgba(0, 255, 135, 0.4);
}

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

.about-cloud-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  width: clamp(320px, 90vw, 700px); 
  background: rgba(0, 12, 7, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-line);
  color: var(--text-main);
  padding: 40px; 
  border-radius: 16px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(0, 255, 135, 0.05);
  z-index: 10006;
  font-family: 'Space Grotesk', sans-serif; 
  
  opacity: 0;
  visibility: hidden;
  
  transform: translate(-50%, -45%) scale(0.95);
  transform-origin: center;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); 
}

.about-cloud-popup::after,
.about-cloud-popup::before {
  display: none;
}

.about-cloud-popup h3 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--text-main);
  font-size: 1.6rem; 
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.5px;
}

.about-content-scroll {
  max-height: 350px; 
  overflow-y: auto;
  padding-right: 15px;
}

.about-content-scroll::-webkit-scrollbar {
  display: block;
  width: 4px;
}
.about-content-scroll::-webkit-scrollbar-thumb {
  background: var(--border-line);
  border-radius: 10px;
}
.about-content-scroll:hover::-webkit-scrollbar-thumb {
  background: rgba(0, 255, 135, 0.3);
}

.about-cloud-popup p {
  margin: 0 0 16px 0;
  color: var(--text-muted);
  font-size: 1.05rem; 
  line-height: 1.7;
  font-family: 'Space Grotesk', sans-serif; 
}
.about-cloud-popup p:last-child {
  margin-bottom: 0;
}

.about-cloud-popup.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}