/* Reset & Base Styles */
:root {
  --primary: #0f172a; /* Slate 900 */
  --primary-light: #1e293b; /* Slate 800 */
  --accent: #3b82f6; /* Blue 500 */
  --accent-hover: #2563eb; /* Blue 600 */
  --accent-light: #60a5fa; /* Blue 400 */
  --gradient-start: #6366f1; /* Indigo 500 */
  --gradient-end: #a855f7; /* Purple 500 */
  --text-main: #0f172a; /* Slate 900 */
  --text-light: #64748b; /* Slate 500 */
  --bg-light: #f8fafc; /* Slate 50 */
  --bg-white: #ffffff;
  --border-color: #e2e8f0; /* Slate 200 */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 12px -2px rgb(0 0 0 / 0.12);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --radius: 16px;
  --radius-sm: 12px;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 1rem;
  font-weight: 700;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-light {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 8px 20px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 50px;
  color: var(--gradient-start);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 15px;
  letter-spacing: 0.5px;
}

.section-header h2 {
  font-size: 3rem;
  margin-bottom: 15px;
  font-weight: 800;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.text-center { text-align: center; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: var(--font-heading);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.btn-large {
  padding: 18px 40px;
  font-size: 1.1rem;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: var(--bg-white);
  box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px -10px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background-color: transparent;
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: var(--bg-white);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--bg-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Navbar */
.navbar {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
  padding: 18px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

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

.logo span {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 40px;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--text-main);
  position: relative;
  padding: 8px 4px;
  font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--gradient-start);
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 50%;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  transition: var(--transition);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  cursor: pointer;
}

.bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  transition: var(--transition);
  background-color: var(--primary);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--bg-white);
  padding: 140px 0 120px;
  position: relative;
  overflow: hidden;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-gradient {
  position: absolute;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 30px;
  animation: fadeInDown 0.8s ease;
}

.hero-text h1 {
  font-size: 4.5rem;
  color: var(--bg-white);
  margin-bottom: 25px;
  line-height: 1.1;
  font-weight: 800;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-text p {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
  max-width: 600px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
  display: flex;
  gap: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  animation: fadeInUp 0.8s ease 0.8s both;
}

.stat-item {
  text-align: left;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 5px;
}

.stat-label {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  font-weight: 500;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Services Section */
.services-section {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 35px;
}

.service-card {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  transform: scaleX(0);
  transition: transform 0.5s ease;
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
  border-color: transparent;
}

.service-card.featured {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
  border: 2px solid var(--gradient-start);
}

.popular-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: white;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.service-icon-wrapper {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
  transition: var(--transition);
}

.service-card:hover .service-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.service-icon {
  font-size: 2rem;
}

.service-card h3 {
  font-size: 1.4rem;
  margin-bottom: 15px;
  font-weight: 700;
}

.service-card p {
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.service-features span {
  color: var(--text-light);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-features span::before {
  content: '✓';
  color: var(--gradient-start);
  font-weight: bold;
}

/* Why Choose Us / Features */
.features-section {
  background-color: var(--bg-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background: white;
  padding: 40px 30px;
  border-radius: var(--radius);
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
}

.feature-card:hover {
  border-color: var(--gradient-start);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.15);
}

.feature-number {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 3rem;
  font-weight: 800;
  color: rgba(99, 102, 241, 0.08);
  font-family: var(--font-heading);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  display: inline-block;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  transform: scale(1.2);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  font-weight: 700;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.8;
}

/* Footer */
footer {
  background-color: var(--primary);
  color: var(--bg-white);
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--bg-white);
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #9ca3af;
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-link {
  width: 36px;
  height: 36px;
  background-color: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  color: #9ca3af;
  font-size: 0.9rem;
}

/* Page Headers */
.page-header {
  background-color: var(--primary);
  color: var(--bg-white);
  padding: 80px 0;
  text-align: center;
}

.page-header h1 {
  color: var(--bg-white);
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.page-header p {
  color: #e0e7ff;
  max-width: 600px;
  margin: 0 auto;
}

/* Contact Form */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-info-item {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
}

.contact-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(6, 182, 212, 0.1);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-family: var(--font-body);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.error-message {
  color: #ef4444;
  font-size: 0.85rem;
  margin-top: 5px;
  display: none;
}

.input-error {
  border-color: #ef4444;
}

.success-message {
  background-color: #d1fae5;
  color: #065f46;
  padding: 15px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  display: none;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 35px;
}

.project-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  background: white;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--gradient-start);
}

/* Testimonials */
.projects-grid .service-card {
  position: relative;
  overflow: visible;
}

.projects-grid .service-card::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 30px;
  font-size: 80px;
  font-family: Georgia, serif;
  color: var(--gradient-start);
  opacity: 0.2;
  line-height: 1;
}

/* CTA Section */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
  padding: 100px 0;
  overflow: hidden;
}

.cta-gradient {
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
  pointer-events: none;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-50px, 50px) rotate(5deg);
  }
}

.cta-content {
  text-align: center;
  position: relative;
  z-index: 2;
}

.cta-content h2 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: 20px;
  font-weight: 800;
  line-height: 1.2;
}

.cta-content p {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 50px;
}

.cta-info {
  display: flex;
  gap: 40px;
  justify-content: center;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
}

.info-item span {
  font-size: 1.2rem;
}

.project-img {
  height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover .project-img {
  transform: scale(1.05);
}

.project-content {
  padding: 30px;
  background: white;
}

.project-content h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.project-content p {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.tech-tag {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(168, 85, 247, 0.08) 100%);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gradient-start);
  border: 1px solid rgba(99, 102, 241, 0.15);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 100px 0 80px;
    min-height: auto;
  }

  .hero-text h1 {
    font-size: 2.8rem;
  }

  .hero-text p {
    font-size: 1.1rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 30px;
    text-align: center;
  }

  .stat-item {
    text-align: center;
  }

  .section-header h2 {
    font-size: 2.2rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .cta-content h2 {
    font-size: 2.2rem;
  }

  .cta-content p {
    font-size: 1.1rem;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .cta-info {
    flex-direction: column;
    gap: 20px;
  }

  .hamburger {
    display: block;
    z-index: 1001;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .nav-links {
    position: fixed;
    left: -100%;
    top: 0;
    flex-direction: column;
    background-color: var(--bg-white);
    width: 100%;
    height: 100vh;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding-top: 80px;
    gap: 20px;
  }

  .nav-links.active {
    left: 0;
  }

  .contact-container {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }
}