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

:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --bg-primary: #0f0f23;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --glow-color: rgba(99, 102, 241, 0.3);
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
}

body {
  font-family: "Vazirmatn", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  direction: rtl;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header Styles */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 15, 35, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: none;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
  text-shadow: 0 0 10px var(--glow-color);
}

.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Mobile Menu Styles */
.nav-links.active {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(15, 15, 35, 0.98);
  backdrop-filter: blur(10px);
  flex-direction: column;
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  z-index: 999;
}

.nav-links.active .nav-link {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
  font-size: 1.1rem;
}

.nav-links.active .nav-link:last-child {
  border-bottom: none;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8rem 1rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  flex: 1;
  max-width: 600px;
  z-index: 2;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.search-container {
  position: relative;
  max-width: 500px;
  margin-bottom: 2rem;
}

.search-input {
  width: 100%;
  padding: 1rem 3rem 1rem 1rem;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 20px var(--glow-color);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-color);
  border: none;
  border-radius: 8px;
  padding: 0.5rem;
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.search-btn:hover {
  background: var(--primary-dark);
  box-shadow: 0 0 15px var(--glow-color);
}

.hero-visual {
  flex: 1;
  position: relative;
  height: 400px;
  display: none;
}

.floating-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
  animation: float 6s ease-in-out infinite;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card-1 {
    top: 20%;
    right: 20%;
    animation-delay: 0s;
    background: linear-gradient(135deg, #e34c26, #f06529);
}

.card-2 {
    top: 60%;
    right: 10%;
    animation-delay: 1.5s;
    background: linear-gradient(135deg, #1572b6, #33a9dc);
}

.card-3 {
    top: 10%;
    right: 60%;
    animation-delay: 3s;
    background: linear-gradient(135deg, #f7df1e, #f0db4f);
    color: #000;
}

.card-4 {
    top: 70%;
    right: 50%;
    animation-delay: 4.5s;
    background: linear-gradient(135deg, #61dafb, #21d4fd);
    color: #000;
}

.card-5 {
    top: 35%;
    right: 35%;
    animation-delay: 0.75s;
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

.card-6 {
    top: 80%;
    right: 25%;
    animation-delay: 2.25s;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
}

.card-7 {
    top: 45%;
    right: 70%;
    animation-delay: 3.75s;
    background: linear-gradient(135deg, #10b981, #34d399);
}

.card-8 {
    top: 15%;
    right: 75%;
    animation-delay: 5.25s;
    background: linear-gradient(135deg, #ef4444, #f59e42);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-20px) rotate(1deg);
  }
  50% {
    transform: translateY(-10px) rotate(-1deg);
  }
  75% {
    transform: translateY(-15px) rotate(0.5deg);
  }
}

/* Subjects Section */
.subjects {
  padding: 6rem 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 4rem;
}

.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.subject-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.subject-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.subject-card:hover::before {
  opacity: 0.1;
}

.subject-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--primary-color);
}

.card-icon {
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 2;
}

.card-icon > div {
  width: 80px;
  height: 80px;
  margin: 0 auto;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  color: white;
}

.icon-html {
  background: linear-gradient(135deg, #e34c26, #f06529);
}
.icon-css {
  background: linear-gradient(135deg, #1572b6, #33a9dc);
}
.icon-js {
  background: linear-gradient(135deg, #f7df1e, #f0db4f);
  color: #000;
}
.icon-react {
  background: linear-gradient(135deg, #61dafb, #21d4fd);
  color: #000;
}
.icon-node {
  background: linear-gradient(135deg, #68a063, #8cc84b);
}
.icon-python {
  background: linear-gradient(135deg, #3776ab, #ffd43b);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 2;
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 2;
}

.card-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  position: relative;
  z-index: 2;
}

/* Features Section */
.features {
  padding: 6rem 0;
  background: var(--bg-primary);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  border-color: var(--primary-color);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
}

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

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-heading {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-links a:hover {
  color: var(--primary-color);
  text-shadow: 0 0 10px var(--glow-color);
}

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

.social-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.social-link:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 0 15px var(--glow-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in:nth-child(2) {
  animation-delay: 0.2s;
}
.fade-in:nth-child(3) {
  animation-delay: 0.4s;
}
.fade-in:nth-child(4) {
  animation-delay: 0.6s;
}

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

/* Responsive Design */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .mobile-menu-btn {
    display: none;
  }

  .hero {
    padding: 8rem 2rem 4rem;
  }

  .hero-visual {
    display: block;
  }

  .subjects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: 8rem 4rem 4rem;
  }

  .subjects-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Selection */
::selection {
  background: var(--primary-color);
  color: white;
}