/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* Custom Properties */
:root {
  --primary-color: #f49c13;
  --primary-dark: #00a085;
  --secondary-color: #f49c13;
  --accent-color: #fd79a8;
  --dark-bg: #0f1419;
  --card-bg: rgba(255, 255, 255, 0.95);
  --text-dark: #2d3748;
  --text-light:#2d3748 ;
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-light: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 20px 60px rgba(0, 0, 0, 0.2);
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

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

html {
  scroll-behavior: smooth;
  width: 100%;
  overflow-x: hidden;
}

body {
  font-family: 'sans-serif', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-dark);
  line-height: 1.7;
  overflow-x: hidden;
  /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
  min-height: 100vh;
  width: 100%;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left:0;
  right:0;
  width: 100%;
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-light);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

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

.nav-links a {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  position: relative;
  padding: 0.5rem 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover::before {
  width: 100%;
}

.nav-links a:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: white;
  padding: 0.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

/* Hero */
.hero {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background:
              url("https://res.cloudinary.com/devuzwfsg/image/upload/v1758937274/sinter_plant_zm3smw.jpg") center/cover no-repeat;
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0, 184, 148, 0.3) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(108, 92, 231, 0.3) 0%, transparent 50%);
  animation: heroGradient 8s ease-in-out infinite alternate;
}

@keyframes heroGradient {
  0% { opacity: 0.5; }
  100% { opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff, #f8f9fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  font-weight: 400;
}

.hero .btn {
  background: var(--gradient-primary);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  color: white;
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 10px 30px rgba(0, 184, 148, 0.4);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.hero .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.hero .btn:hover::before {
  left: 100%;
}

.hero .btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 15px 40px rgba(0, 184, 148, 0.6);
}

/* Sections */
.section {
  padding: 6rem 0;
  position: relative;
  background: white;
}

.section.dark {
  background: var(--dark-bg);
  color: #ffffff;
  position: relative;
}

.section.dark::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #0f1419 0%, #1a202c 100%);
  z-index: -1;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 3rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.section.dark h2 {
  background: linear-gradient(135deg, #ffffff, #e2e8f0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.center {
  text-align: center;
  margin-bottom: 3rem;
}

.grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

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

.text {
  font-size: 1.125rem;
  line-height: 1.8;
}

.text p {
  margin-bottom: 1.5rem;
  color: var(--text-light);
}

.section.dark .text p {
  color: rgba(255, 255, 255, 0.8);
}

.image {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: var(--shadow-heavy);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.image:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.image img {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 20px;
}

.image:hover img {
  transform: scale(1.1);
}

/* Cards */
.cards {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

@media(min-width: 768px) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--card-bg);
  padding: 2.5rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-light);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-dark);
  position: relative;
}

.card p {
  color: var(--text-light);
  line-height: 1.7;
  font-size: 1rem;
}

.card.hover:hover {
  transform: translateY(-15px) rotateX(5deg);
  box-shadow: var(--shadow-heavy);
  background: rgba(255, 255, 255, 0.98);
}

.card:nth-child(1):hover {
  background: linear-gradient(135deg, rgba(0, 184, 148, 0.05), rgba(255, 255, 255, 0.95));
}

.card:nth-child(2):hover {
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.05), rgba(255, 255, 255, 0.95));
}

.card:nth-child(3):hover {
  background: linear-gradient(135deg, rgba(253, 121, 168, 0.05), rgba(255, 255, 255, 0.95));
}

/* Form */
.form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.form input,
.form textarea {
  padding: 1rem 1.5rem;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
}

.form input::placeholder,
.form textarea::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 3px rgba(0, 184, 148, 0.1);
  transform: translateY(-2px);
}

.form .btn {
  background: var(--gradient-primary);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 30px rgba(0, 184, 148, 0.3);
  position: relative;
  overflow: hidden;
}

.form .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 184, 148, 0.5);
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, #0f1419 0%, #1a202c 100%);
  color: rgba(255, 255, 255, 0.7);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
}

.footer p {
  font-size: 1rem;
  font-weight: 400;
}

/* Scroll Button */
#scrollTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 184, 148, 0.3);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

#scrollTop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#scrollTop:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 15px 40px rgba(0, 184, 148, 0.5);
}

/* Advanced Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.fade-in.delay {
  animation-delay: 0.3s;
}

.fade-in.delay2 {
  animation-delay: 0.6s;
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  animation: slideInLeft 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  animation: slideInRight 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Keyframes */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, rgba(0, 184, 148, 0.95), rgba(108, 92, 231, 0.95));
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .nav-links a {
    font-size: 1.5rem;
    font-weight: 600;
  }
  
  .menu-toggle {
    display: block;
    z-index: 1001;
  }
  
  .section {
    padding: 4rem 1rem;
  }
  
  .cards {
    grid-template-columns: 1fr;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
}

/* Video Styling */
video {
  border-radius: 20px;
  box-shadow: var(--shadow-heavy);
  max-width: 100%;
  height: auto;
  transition: transform 0.3s ease;
}

video:hover {
  transform: scale(1.02);
}