:root {
  --primary-color: #15616d; /* آبی ملایم */
  --secondary-color: #ff7d00; /* سبز ملایم */
  --text-color: #181919; /* مشکی ملایم */
  --bg-color: #ffffff; /* سفید */
  --gray-light: #faf8f8; /* خاکستری روشن */
  --gray-dark: #495057; /* خاکستری تیره */
  --transition: all 0.3s ease;
}


* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Vazirmatn', sans-serif;
}

body {
  color: var(--text-color);
  line-height: 1.6;
}

/* Header & Navigation */
header {
  position: fixed;
  width: 100%;
  top: 0;
  background: var(--bg-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

nav {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  align-items: center;
  padding: 1rem 5%;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-links {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-color);
}

.auth-buttons {
  justify-self: end;
  display: flex;
  gap: 1rem;
}

@media (max-width: 768px) {
  nav {
    display: flex;
    justify-content: space-between;
  }
}

@media (max-width: 768px) {
  .nav-links {
      position: fixed;
      top: 70px;
      right: -100%;
      flex-direction: column;
      background: var(--bg-color);
      width: 100%;
      height: calc(100vh - 70px);
      padding: 2rem;
      transition: var(--transition);
      z-index: 1000;
      backdrop-filter: blur(10px);
      background-color: rgba(255, 255, 255, 0.9);
  }
}

.login-btn, .register-btn {
  padding: 0.5rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: var(--transition);
}

.login-btn {
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.register-btn {
  background: var(--primary-color);
  color: white;
}

.login-btn:hover {
  background-color: #15616da2;
}

.register-btn:hover {
  background-color: #0a4952;
  color: #ffffff;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-color);
  transition: var(--transition);
}

/* Hero Section */
.main-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 5% 5rem;
  background: linear-gradient(to bottom right, var(--bg-color) 0%, var(--gray-light) 100%);
  overflow: hidden;
}

.hero-content {
  display: flex;
  gap: 4rem;
  max-width: 1400px;
  margin: 0 auto;
  align-items: center;
}

.hero-text {
  flex: 1;
  animation: fadeIn 1s ease-out;
}


.hero-text h1 {
  font-weight: bold;
  background: linear-gradient(90deg, #15616d, #54cddf);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0 0 1rem;
  font-size: 3rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-image {
  flex: 1;
  scale: 0.8;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 1rem;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--secondary-color);
  color: white;
  text-decoration: none;
  border-radius: 0.5rem;
  margin-top: 2rem;
  transition: var(--transition);
}

/* About Section */
.about {
  padding: 5rem 5%;
  background: var(--gray-light);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.skill-card {
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Services Section */
.services {
  padding: 5rem 5%;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2.5rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.service-card {
  padding: 2rem;
  border: 1px solid #e5e7eb;
  border-radius: 1rem;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.button-container {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

.call-service {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--secondary-color);
  color: white;
  text-decoration: none;
  border-radius: 0.5rem;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
  cursor: pointer;
}

.call-service:hover {
  background: #feb47b;
  transform: scale(1.05);
}

/* Portfolio Section */
.portfolio {
  padding: 5rem 5%;
  background: var(--gray-light);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.filter-button {
  padding: 0.5rem 1.5rem;
  border: none;
  background: white;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.filter-button.active {
  background: var(--primary-color);
  color: white;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.portfolio-item {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 1.5rem;
  transform: translateY(100%);
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-item-overlay {
  transform: translateY(0);
}

/* Blog Section */
.blog {
  padding: 5rem 5%;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.blog-post {
  background: white;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.blog-post img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.blog-content {
  padding: 1.5rem;
}

.blog-category {
  background: var(--secondary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

/* Contact Section */
.contact {
  padding: 5rem 5%;
  background: var(--gray-light);
}

.contact-container {
  max-width: 800px;
  margin: 0 auto;
}

.contact-form {
  display: grid;
  gap: 1.5rem;
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-group {
  display: grid;
  gap: 0.5rem;
}

.form-group input,
.form-group textarea {
  padding: 0.75rem;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  font-family: inherit;
}

.submit-button {
  background: var(--primary-color);
  color: white;
  padding: 1rem;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
}

/* Footer */
footer {
  background: var(--text-color);
  color: white;
  padding: 5rem 5% 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.footer-section h3 {
  margin-bottom: 1.5rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: var(--transition);
}

.footer-section a:hover {
  opacity: 1;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.footer-bottom {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    right: -100%;
    flex-direction: column;
    background: white;
    width: 100%;
    height: calc(100vh - 70px);
    padding: 2rem;
    transition: var(--transition);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .hero-content {
    flex-direction: column-reverse;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
}