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

body {
  font-family: "Poppins", sans-serif;
  background: #ffffff;
  color: #1f2937;
  line-height: 1.6;
  overflow-x: hidden;
}
#customAlert {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #ff4d4f;
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 9999;
  }

  #customAlert.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

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

/* Navbar Styles */
.navbar {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: #4f46e5;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1f2937;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  text-decoration: none;
  color: #4b5563;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-link:hover {
  color: #4f46e5;
}

.dropdown-icon {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #ffffff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  padding: 0.5rem 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1.25rem;
  color: #4b5563;
  text-decoration: none;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

.dropdown-item:hover {
  background: #f3f4f6;
  color: #4f46e5;
  padding-left: 1.5rem;
}

.btn-login {
  padding: 0.6rem 1.5rem;
  background: #4f46e5;
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.btn-login:hover {
  background: #4338ca;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.mobile-login {
  display: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 0.4rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger-line {
  width: 25px;
  height: 3px;
  background: #1f2937;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* =========================
   Hero Section
========================= */
.hero-section {
  background: linear-gradient(135deg, #ffffff 0%, #eff6ff 100%);
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

/* Layout */
.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

/* Left Content */
.hero-left {
  animation: fadeInUp 0.8s ease;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: #1f2937;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: #4f46e5;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.1rem;
  color: #6b7280;
  margin-bottom: 2rem;
  max-width: 500px;
}

/* Buttons */
.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.9rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-primary {
  background: #4f46e5;
  color: #ffffff;
}

.btn-primary:hover {
  background: #4338ca;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
  background: transparent;
  color: #4f46e5;
  border: 2px solid #4f46e5;
}

.btn-secondary:hover {
  background: #4f46e5;
  color: #ffffff;
  transform: translateY(-3px);
}

/* Right Image */
.hero-right {
  animation: fadeInRight 1s ease;
  display: flex;
  justify-content: center;
}

.hero-illustration {
  animation: float 3s ease-in-out infinite;
}

.hero-image {
  width: 100%;
  max-width: 480px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 30px rgba(79, 70, 229, 0.25));
}

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

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

@keyframes float {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
  100% {
    transform: translateY(0);
  }
}

/* =========================
   Responsive Design
========================= */

/* Tablet */
@media (max-width: 992px) {
  .hero-content {
    gap: 3rem;
  }

  .hero-title {
    font-size: 2.8rem;
  }

  .hero-image {
    max-width: 420px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-description {
    margin: 0 auto 2rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    max-width: 320px;
    margin-top: 2rem;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .hero-image {
    max-width: 260px;
  }
}

/* Stats Section */
.stats-section {
  padding: 4rem 0;
  background: #ffffff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(79, 70, 229, 0.15);
}

.stat-icon {
  width: 48px;
  height: 48px;
  color: #4f46e5;
  margin: 0 auto 1rem;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: #6b7280;
  font-size: 1rem;
}

/* Section Title */
.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1f2937;
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: #6b7280;
  text-align: center;
  margin-bottom: 3rem;
}

/* Learning Paths Section */
.learning-paths-section {
  padding: 5rem 0;
  background: #f9fafb;
}

.paths-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.path-card {
  background: #ffffff;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.path-card:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.2);
}

.path-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.path-icon svg {
  width: 32px;
  height: 32px;
  color: #ffffff;
}

.path-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

.path-description {
  color: #6b7280;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.path-link {
  color: #4f46e5;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: all 0.3s ease;
}

.path-link:hover {
  gap: 0.5rem;
}

/* Interview Questions Section */
.interview-questions-section {
  padding: 5rem 0;
  background: #ffffff;
}

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

.question-card {
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  position: relative;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.question-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 35px rgba(79, 70, 229, 0.2);
  border-color: #4f46e5;
}

.difficulty-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.difficulty-badge.beginner {
  background: #d1fae5;
  color: #065f46;
}

.difficulty-badge.intermediate {
  background: #fef3c7;
  color: #92400e;
}

.difficulty-badge.advanced {
  background: #fee2e2;
  color: #991b1b;
}

.question-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 1rem;
  margin-top: 1rem;
}

.question-count {
  color: #6b7280;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.question-link {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: #4f46e5;
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.question-link:hover {
  background: #4338ca;
  transform: scale(1.05);
}

/* Coding Practice Section */
.coding-practice-section {
  padding: 5rem 0;
  background: #f9fafb;
}

.coding-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.coding-left .section-title {
  text-align: left;
  margin-bottom: 2rem;
}

.coding-features {
  list-style: none;
  margin-bottom: 2rem;
}

.coding-features li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  color: #4b5563;
  font-size: 1.05rem;
}

.coding-features svg {
  width: 24px;
  height: 24px;
  color: #10b981;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.code-editor-mock {
  background: #1f2937;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.editor-header {
  background: #374151;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.editor-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.editor-dot.red {
  background: #ef4444;
}

.editor-dot.yellow {
  background: #f59e0b;
}

.editor-dot.green {
  background: #10b981;
}

.editor-title {
  margin-left: auto;
  color: #9ca3af;
  font-size: 0.85rem;
}

.editor-content {
  padding: 1.5rem;
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
  line-height: 1.8;
}

.code-line {
  color: #e5e7eb;
}

.keyword {
  color: #c084fc;
}

.function {
  color: #60a5fa;
}

.number {
  color: #fbbf24;
}

.comment {
  color: #6b7280;
  font-style: italic;
}

/* Mock Tests Section */
.mock-tests-section {
  padding: 5rem 0;
  background: #ffffff;
}

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

.test-card {
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid #f3f4f6;
}

.test-card:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.15);
  border-color: #4f46e5;
}

.test-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.test-icon svg {
  width: 32px;
  height: 32px;
  color: #4f46e5;
}

.test-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 1rem;
}

.test-meta {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  color: #6b7280;
  font-size: 0.9rem;
}

.btn-outline {
  background: transparent;
  color: #4f46e5;
  border: 2px solid #4f46e5;
}

.btn-outline:hover {
  background: #4f46e5;
  color: #ffffff;
}

/* Why Choose Section */
.why-choose-section {
  padding: 5rem 0;
  background: #f9fafb;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

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

.feature-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: all 0.3s ease;
}

.feature-item:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-icon svg {
  width: 36px;
  height: 36px;
  color: #ffffff;
}

.feature-item h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

.feature-item p {
  color: #6b7280;
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><circle cx="30" cy="30" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
  opacity: 0.3;
}

.cta-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.btn-large {
  padding: 1.1rem 3rem;
  font-size: 1.1rem;
}

.cta-section .btn-primary {
  background: #ffffff;
  color: #4f46e5;
}

.cta-section .btn-primary:hover {
  background: #f3f4f6;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-secondary {
  border-color: #ffffff;
  color: #ffffff;
}

.cta-section .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Footer */
.footer {
  background: #1f2937;
  color: #ffffff;
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #ffffff;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-description {
  color: #9ca3af;
  line-height: 1.6;
  max-width: 300px;
}

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

.footer-section ul li {
  margin-bottom: 0.75rem;
}

.footer-section ul li a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 1.5rem;
  text-align: center;
  color: #9ca3af;
}

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

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

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 968px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: #ffffff;
    width: 100%;
    text-align: center;
    transition: left 0.3s ease;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 2rem 0;
    gap: 0;
  }

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

  .nav-item {
    width: 100%;
    padding: 1rem 0;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: #f9fafb;
    margin-top: 0.5rem;
  }

  .mobile-login {
    display: block;
  }

  .nav-right {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }

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

  .hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .coding-content {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }

  .hero-section {
    padding: 3rem 0;
  }

  .hero-title {
    font-size: 2rem;
  }

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

  .btn {
    width: 100%;
    text-align: center;
  }

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

  .section-title {
    font-size: 2rem;
  }

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

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

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

  .footer-content {
    grid-template-columns: 1fr;
  }

  .cta-title {
    font-size: 1.8rem;
  }

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

  .btn-large {
    width: 100%;
  }
}