:root {
  --primary-blue: #1e88e5;
  --turquoise: #4dd0e1;
  --mint: #b2dfdb;
  --cream: #f5e6d3;
  --white: #ffffff;
  --text-dark: #333333;
  --text-gray: #666666;
  --border-color: #e0e0e0;
}

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

body {
  font-family: "Open Sans", sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
}

.container {
  display: flex;
  min-height: 100vh;
}

/* Navigation */
nav {
  width: 250px;
  background: linear-gradient(145deg, var(--cream), var(--mint));
  padding: 40px 30px;
  box-shadow: 4px 0 20px rgba(30, 136, 229, 0.1);
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}

.logo {
  text-align: center;
  margin-bottom: 50px;
}

.logo img {
  width: 150px;
  height: auto;
  border-radius: 15px;
  transition: transform 0.3s ease;
}

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

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.nav-menu li a {
  display: block;
  padding: 15px 20px;
  text-decoration: none;
  color: var(--primary-blue);
  font-weight: 600;
  border-radius: 25px;
  transition: all 0.3s ease;
  text-align: center;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  background-color: var(--turquoise);
  color: var(--white);
  transform: translateX(5px);
}

/* Navigation actions */
.nav-actions {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(30, 136, 229, 0.2);
}

.login-button {
  display: block;
  background: linear-gradient(135deg, var(--primary-blue), var(--turquoise));
  color: var(--white);
  padding: 12px 20px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  margin-bottom: 15px;
}

.login-button:hover,
.login-button.active {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
}

.signup-link {
  display: block;
  color: var(--text-gray);
  text-decoration: none;
  font-size: 14px;
  text-align: center;
  padding: 8px;
  transition: color 0.3s ease;
}

.signup-link:hover,
.signup-link.active {
  color: var(--primary-blue);
  font-weight: 600;
}

/* Main */
main {
  margin-left: 250px;
  flex: 1;
  padding: 0;
}

/* Hero section */
.hero {
  background: linear-gradient(
    135deg,
    rgba(245, 230, 211, 0.6) 0%,
    rgba(178, 223, 219, 0.4) 50%,
    rgba(245, 230, 211, 0.3) 100%
  );
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 40px;
  position: relative;
  background-image: url("./assets/image/bg.svg");
  background-size: cover;
  background-position: center;
}

.hero-content {
  max-width: 800px;
  z-index: 2;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 25px;
  text-shadow: 0 2px 4px rgba(30, 136, 229, 0.1);
}

.hero p {
  font-size: 18px;
  color: var(--text-gray);
  margin-bottom: 35px;
  line-height: 1.7;
}

.cta-button {
  background: linear-gradient(135deg, var(--primary-blue), var(--turquoise));
  color: var(--white);
  border: none;
  padding: 15px 35px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(30, 136, 229, 0.4);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 50px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  background: rgba(255, 255, 255, 0.2);
  padding: 20px 25px;
  border-radius: 15px;
  border: 1px solid rgba(178, 223, 219, 0.3);
  backdrop-filter: blur(5px);
  transition: transform 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-5px);
}

.stat-number {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-gray);
  text-transform: uppercase;
}

/* Content Sections */
.content-section {
  padding: 80px 60px;
  max-width: 1200px;
  margin: 0 auto;
}

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

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

.section-header p {
  font-size: 18px;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.feature-card {
  background: var(--white);
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 12px 35px rgba(30, 136, 229, 0.12);
  border: 1px solid var(--mint);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 60px rgba(30, 136, 229, 0.18);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--turquoise), var(--mint));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.icon-img {
  width: 40px;
  height: 40px;
}

.feature-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

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

/* Testimonial section */
.testimonial {
  background: var(--cream);
  padding: 60px 40px;
  border-radius: 20px;
  text-align: center;
  margin: 40px 0;
}

.testimonial-content {
  max-width: 800px;
  margin: 0 auto;
}

.testimonial img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: 20px;
  border: 4px solid var(--turquoise);
}

.testimonial blockquote {
  font-size: 18px;
  font-style: italic;
  color: var(--text-gray);
  margin-bottom: 20px;
  line-height: 1.7;
}

.testimonial-author {
  font-weight: 600;
  color: var(--primary-blue);
}

.testimonial-position {
  color: var(--text-gray);
  font-size: 14px;
}

/* About section */
.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 20px;
}

.about-text p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 25px;
  line-height: 1.6;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: 8px 0;
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
  padding-left: 25px;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--turquoise);
  font-weight: 700;
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.team-image {
  text-align: center;
}

.team-photo {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 8px 25px rgba(30, 136, 229, 0.4);
  transition: transform 0.3s ease;
}

.team-photo:hover {
  transform: scale(1.1);
}

.tech-stack h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 20px;
}

.tech-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tech-item {
  background: linear-gradient(135deg, var(--turquoise), var(--mint));
  color: var(--white);
  padding: 10px 15px;
  border-radius: 15px;
  font-weight: 600;
  text-align: center;
  font-size: 14px;
}

/* Footer */

a {
  text-decoration: none;
  color: var(--primary-blue);
}

footer {
  background: var(--mint);
  padding: 40px 60px 20px;
  margin-left: -60px;
  margin-right: -60px;
  text-align: center;
  margin-top: 60px;
}

.footer-content {
  color: var(--text-dark);
  margin-bottom: 20px;
}

.footer-content h3 {
  color: var(--primary-blue);
  margin-bottom: 10px;
}

.contact-info {
  margin-top: 10px;
}

.footer-bottom {
  border-top: 1px solid var(--turquoise);
  padding-top: 15px;
  margin-top: 20px;
}

/* Form sections */
.form-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
  background: linear-gradient(
    135deg,
    rgba(245, 230, 211, 0.3) 0%,
    rgba(178, 223, 219, 0.2) 50%,
    rgba(245, 230, 211, 0.3) 100%
  );
}

.form-container {
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
}

.form-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: var(--white);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(30, 136, 229, 0.15);
  overflow: hidden;
}

.form-side {
  padding: 60px 50px;
}

.form-header h1 {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

.form-header p {
  font-size: 16px;
  color: var(--text-gray);
  line-height: 1.6;
  margin-bottom: 15px;
}

.form-subtitle {
  font-size: 14px !important;
  margin-bottom: 40px !important;
}

.form-subtitle a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
}

.form-subtitle a:hover {
  text-decoration: underline;
}

.signup-form,
.signin-form {
  margin: 40px 0;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-dark);
  font-size: 14px;
}

.form-group input {
  width: 100%;
  padding: 15px 20px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-size: 16px;
  font-family: inherit;
  transition: all 0.3s ease;
  background-color: var(--white);
}

.form-group input:focus {
  outline: none;
  border-color: var(--turquoise);
  box-shadow: 0 0 0 3px rgba(77, 208, 225, 0.1);
  transform: translateY(-2px);
}

.form-footer {
  text-align: center;
  margin-top: 30px;
  font-size: 14px;
  color: var(--text-gray);
}

.form-footer a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
}

.form-footer a:hover {
  text-decoration: underline;
}

.image-side {
  background: linear-gradient(145deg, var(--cream), var(--mint));
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.form-image {
  max-width: 400px;
  width: 100%;
  height: auto;
  border-radius: 15px;
  transition: transform 0.3s ease;
}

.form-image:hover {
  transform: scale(1.05);
}

/* Responsive design */

@media (max-width: 1024px) {
  nav {
    width: 200px;
  }

  main {
    margin-left: 200px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .form-content {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .image-side {
    order: -1;
    padding: 30px;
    height: 300px;
  }

  .form-image {
    max-width: 250px;
  }
}

@media (max-width: 768px) {
  nav {
    position: relative;
    width: 100%;
    height: auto;
    padding: 20px;
  }

  main {
    margin-left: 0;
  }

  .container {
    flex-direction: column;
  }

  .hero {
    min-height: 80vh;
    padding: 40px 20px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }

  .content-section {
    padding: 40px 20px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-sidebar {
    order: -1;
  }

  footer {
    margin-left: -20px;
    margin-right: -20px;
    padding: 30px 20px 15px;
  }

  .form-section {
    padding: 40px 20px;
  }

  .form-side {
    padding: 40px 30px;
  }

  .form-header h1 {
    font-size: 28px;
  }

  .image-side {
    height: 250px;
    padding: 20px;
  }

  .form-image {
    max-width: 200px;
  }

  .nav-actions {
    margin-top: 30px;
    padding-top: 20px;
  }
}