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

:root {
  --coral: #ff8360;
  --lime: #e8e288;
  --green: #7dce82;
  --cyan: #3cdbd3;
  --bright-cyan: #00fff5;
  --light-bg: #f9faff;
  --light-secondary: #ffffff;
  --text-dark: #0f172a;
  --text-muted: #64748b;
  --glass-bg: rgba(255, 255, 255, 0.65);
  --shadow-soft: 0 8px 32px rgba(31, 38, 135, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--light-bg);
  font-family: system-ui, -apple-system, BlinkMacOSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
}

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.2rem 5vw;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  z-index: 1000;
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  transition: transform 0.3s ease;
}

.hamburger:hover { transform: scale(1.08); }

.hamburger span {
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, black, var(--bright-cyan));
  border-radius: 2px;
  transition: all 0.35s ease;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 8px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: translateX(-10px); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -8px); }

.nav-menu {
  position: absolute;
  top: 100%;
  right: 4vw;
  background: rgba(255, 255, 255, 0.906);
  backdrop-filter: blur(16px);
  border-radius: 16px;
  overflow: hidden;
  max-height: 0;
  width: 240px;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-soft);
}

.nav-menu.active {
  max-height: 400px;
}

.nav-menu a {
  display: block;
  padding: 1rem 1.6rem;
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-menu a:hover {
  background: rgba(255,131,96,0.1);
  color: var(--bright-cyan);
  padding-left: 2rem;
}

.hero {
  min-height: 80vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 6rem 5vw 4rem;
  background: linear-gradient(135deg, var(--light-bg) 0%, rgba(0,255,245,0.04) 100%);
}

.hero-title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 800;
  background: linear-gradient(90deg, black, var(--bright-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 0.95;
  margin-bottom: 0.8rem;
}

.hero-subtitle {
  font-size: clamp(1.3rem, 4vw, 2.2rem);
  color: var(--text-muted);
  font-weight: 400;
  max-width: 42ch;
  margin: 0 auto;
}

.hero-visual {
  padding: 0 5vw 6rem;
  text-align: center;
}

#hero-gif {
  width: 100%;
  
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  display: block;
  margin: 0 auto;
}

.container {
  width: 90%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 6rem 0;
}

.section-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  background: linear-gradient(90deg, black, var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-text {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  color: var(--text-muted);
  text-align: center;
  max-width: 65ch;
  margin: 0 auto 3rem;
}

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

.feature-item {
  padding: 2.2rem;
  border-radius: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.25);
  box-shadow: var(--shadow-soft);
  transition: all 0.35s ease;
}

.feature-item:hover {
  transform: translateY(-12px);
  box-shadow: 0 25px 60px rgba(0,0,0,0.1);
}

.feature-item h3 {
  color: var(--coral);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer {
  padding: 5rem 5vw 3rem;
  text-align: center;
  border-top: 1px solid rgba(0,255,245,0.08);
  background: linear-gradient(to top, rgba(0,255,245,0.03), transparent);
}

.footer-content p {
  color: var(--text-muted);
  margin: 0.6rem 0;
}

.footer-content p:first-child {
  color: var(--bright-cyan);
  font-weight: 600;
}

@media (min-width: 640px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 940px) {
  .navbar { padding: 1.8rem 6vw; }
  .features-grid { grid-template-columns: repeat(4, 1fr); gap: 2.5rem; }
  .section { padding: 10rem 0; }
}

.demo-gif {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding: 4rem 2rem;
  width: 100%;
}

.demo-gif-2 {
  flex: 1;
  min-width: 280px;
  max-width: 500px;
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.demo-gif-2:hover {
  transform: translateY(-8px);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.12);
}

@media (max-width: 768px) {
  .demo-gif {
    flex-direction: column;
    gap: 1.5rem;
    padding: 3rem 1rem;
  }
  
  .demo-gif-2 {
    min-width: 100%;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .demo-gif {
    gap: 1rem;
    padding: 2rem 1rem;
  }
}

#big-img{
    width: 100%;
    border-radius: 5px;
}