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

:root {
  --primary-color: #0891b2;
  --primary-dark: #0e7490;
  --primary-light: #06b6d4;
  --secondary-color: #f0f9ff;
  --accent-color: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --background: #ffffff;
  --surface: #f8fafc;
  --border: #e5e7eb;
  --shadow: rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
  --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
  --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #a855f7 100%);
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background);
  overflow-x: hidden;
}

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

/* Toast Notifications */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  min-width: 300px;
  max-width: 500px;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: slideInRight 0.3s ease-out;
}

.toast-success {
  background: #10b981;
  color: white;
}

.toast-error {
  background: #ef4444;
  color: white;
}

.toast-warning {
  background: #f59e0b;
  color: white;
}

.toast-info {
  background: #3b82f6;
  color: white;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

.toast-close {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.toast-close:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: all 0.3s ease;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

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

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

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

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

/* Global Navbar Dropdown */
.nav-item-dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-container {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: white;
  min-width: 180px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0.5rem 0;
  z-index: 1001;
}

.nav-item-dropdown:hover .dropdown-container {
  display: block;
}

.dropdown-container a {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.dropdown-container a:hover {
  background: var(--secondary-color);
  color: var(--primary-color);
}

.nav-buttons {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
  z-index: 1001;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all 0.3s ease;
}

/* Mobile navigation styles */
.mobile-nav-buttons {
  display: none;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.mobile-nav-buttons .btn {
  font-size: 1rem;
  padding: 0.875rem 1.5rem;
  justify-content: center;
}

/* Responsive Navigation */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: white;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 6rem 2rem 2rem;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

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

  .nav-menu .nav-link {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 1.1rem;
  }

  .nav-menu .nav-link:last-of-type {
    border-bottom: none;
  }

  .nav-buttons {
    display: none !important;
  }

  .mobile-nav-buttons {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

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

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

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

  /* Overlay for mobile menu */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }
}

@media (min-width: 769px) {
  .mobile-nav-buttons {
    display: none !important;
  }

  .nav-buttons {
    display: flex !important;
  }
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(8, 145, 178, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(8, 145, 178, 0.4);
}

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

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

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn-danger {
  border-color: #ef4444;
  color: #ef4444;
}

.btn-danger:hover {
  background: #ef4444;
  color: white;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #e2e8f0 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle at 25% 25%, rgba(8, 145, 178, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
  background-size: 800px 800px, 600px 600px, 400px 400px;
  animation: patternMove 20s ease-in-out infinite;
}

@keyframes patternMove {

  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }

  33% {
    transform: translate(-20px, -20px) rotate(1deg);
  }

  66% {
    transform: translate(20px, -10px) rotate(-1deg);
  }
}

.floating-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.1), rgba(6, 182, 212, 0.1));
  animation: floatShape 8s ease-in-out infinite;
}

.shape-1 {
  width: 80px;
  height: 80px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 120px;
  height: 120px;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.shape-3 {
  width: 60px;
  height: 60px;
  bottom: 30%;
  left: 20%;
  animation-delay: 4s;
}

.shape-4 {
  width: 100px;
  height: 100px;
  top: 40%;
  right: 40%;
  animation-delay: 1s;
}

.shape-5 {
  width: 40px;
  height: 40px;
  top: 80%;
  right: 20%;
  animation-delay: 3s;
}

@keyframes floatShape {

  0%,
  100% {
    transform: translateY(0px);
    opacity: 0.7;
  }

  50% {
    transform: translateY(-20px);
    opacity: 0.4;
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  margin-top: 1rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

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

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Section Styles */
section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--secondary-color);
  color: var(--primary-color);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Section */
.features {
  background: var(--surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 20px var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 20px var(--shadow);
  border: 2px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.pricing-card-popular {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 2rem;
}

.pricing-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 1rem;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.price-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
}

.price-period {
  font-size: 1rem;
  color: var(--text-secondary);
}

.pricing-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--text-secondary);
}

.pricing-features svg {
  color: var(--primary-color);
  flex-shrink: 0;
}

/* Sign Up Section */
.signup {
  background: var(--surface);
  padding: 5rem 0;
  position: relative;
}

.signup .section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.signup .section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--secondary-color);
  color: var(--primary-color);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.signup .section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.signup .section-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.signup-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.signup-card {
  background: white;
  padding: 3rem 2.5rem;
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.signup-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.signup-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

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

.signup-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.1), rgba(6, 182, 212, 0.1));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem;
  color: var(--primary-color);
  transition: all 0.3s ease;
}

.signup-card:hover .signup-icon {
  background: var(--gradient-primary);
  color: white;
  transform: scale(1.1);
}

.signup-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.signup-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.signup-benefits {
  list-style: none;
  margin: 0 0 2.5rem 0;
  padding: 0;
  text-align: left;
}

.signup-benefits li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.signup-benefits svg {
  color: var(--primary-color);
  flex-shrink: 0;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: 2rem 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

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

.footer-links a:hover {
  color: white;
}

.footer-copyright {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* Animation Classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.animate-on-scroll.show {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation delays */
.animate-on-scroll:nth-child(1) {
  transition-delay: 0.1s;
}

.animate-on-scroll:nth-child(2) {
  transition-delay: 0.2s;
}

.animate-on-scroll:nth-child(3) {
  transition-delay: 0.3s;
}

.animate-on-scroll:nth-child(4) {
  transition-delay: 0.4s;
}

.animate-on-scroll:nth-child(5) {
  transition-delay: 0.5s;
}

.animate-on-scroll:nth-child(6) {
  transition-delay: 0.6s;
}

/* Task Summary Styles */
.task-summary {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 2rem;
  margin-top: 1rem;
}

.task-summary h4 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 0.5rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: white;
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.summary-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

.summary-item span {
  color: var(--text-secondary);
  font-weight: 500;
}

.task-description-summary {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  border-left: 4px solid #10b981;
}

.task-description-summary strong {
  color: var(--text-primary);
  font-weight: 600;
  display: block;
  margin-bottom: 0.5rem;
}

.task-description-summary p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.test-cases-summary {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  border-left: 4px solid #f59e0b;
}

.test-cases-summary strong {
  color: var(--text-primary);
  font-weight: 600;
  display: block;
  margin-bottom: 1rem;
}

.test-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.test-case-summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: #fef3c7;
  border-radius: 6px;
  border: 1px solid #f59e0b;
}

.test-case-summary-item span:first-child {
  font-weight: 600;
  color: var(--text-primary);
}

.test-case-summary-item span:last-child {
  font-weight: 700;
  color: #d97706;
}

/* Step container and form improvements */
.step-container {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.step-container.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

.step-indicator {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.step-indicator .step {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #6b7280;
  transition: all 0.3s ease;
  position: relative;
}

.step-indicator .step::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 100%;
  width: 20px;
  height: 2px;
  background: #e5e7eb;
  transform: translateY(-50%);
  transition: all 0.3s ease;
}

.step-indicator .step:last-child::after {
  display: none;
}

.step-indicator .step.active {
  background: var(--gradient-primary);
  color: white;
  transform: scale(1.1);
  box-shadow: 0 4px 15px rgba(8, 145, 178, 0.3);
}

.step-indicator .step.completed {
  background: #10b981;
  color: white;
}

.step-indicator .step.completed::after {
  background: #10b981;
}

.test-case-header {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  padding: 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  border-left: 4px solid var(--primary-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.test-case-header h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
}

.total-score-display {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border: 2px solid #10b981;
  padding: 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  text-align: center;
}

.total-score-display strong {
  font-size: 1.25rem;
  color: #065f46;
  display: block;
  margin-bottom: 0.5rem;
}

.total-score-display .form-help {
  color: #047857;
  font-size: 0.9rem;
  margin: 0;
}

.phrase-test-item {
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.phrase-test-item .form-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1rem;
}

.file-upload-area {
  border: 3px dashed #d1d5db;
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
  cursor: pointer;
  transition: all 0.3s ease;
}

.file-upload-area:hover {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  transform: translateY(-2px);
}

.file-upload-area.dragover {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  transform: scale(1.02);
}

.file-upload-area svg {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.file-upload-area p {
  margin: 0.5rem 0;
  color: var(--text-secondary);
  font-weight: 500;
}

.file-upload-area .text-sm {
  font-size: 0.875rem;
  color: var(--text-light);
}

.uploaded-files {
  margin-top: 1rem;
}

.uploaded-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.uploaded-file:hover {
  border-color: var(--primary-color);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.uploaded-file .file-name {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
}

.uploaded-file .remove-file {
  color: #ef4444;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.uploaded-file .remove-file:hover {
  background: #fef2f2;
  transform: scale(1.1);
}

.navigation-buttons {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid #e5e7eb;
}

.radio-group {
  display: flex;
  gap: 2rem;
  margin-top: 0.5rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.radio-label:hover {
  background: #f3f4f6;
}

.form-radio {
  margin: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

.radio-label span {
  font-weight: 500;
  color: var(--text-primary);
}

/* Form improvements */
.form-group {
  margin-bottom: 2rem;
}

.form-label {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: white;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

.form-help {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-light);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.checkbox-label:hover {
  background: #f3f4f6;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

.checkbox-text {
  font-weight: 500;
  color: var(--text-primary);
}

/* Sidebar scrolling fix */
.sidebar {
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 #f1f5f9;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: #f1f5f9;
}

.sidebar::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Responsive improvements */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

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

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

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

  .signup-options {
    grid-template-columns: 1fr;
  }

  .phrase-test-item .form-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .test-cases-grid {
    grid-template-columns: 1fr;
  }

  .radio-group {
    flex-direction: column;
    gap: 0.5rem;
  }

  .step-indicator {
    gap: 0.5rem;
  }

  .step-indicator .step {
    width: 40px;
    height: 40px;
    font-size: 0.875rem;
  }

  .step-indicator .step::after {
    width: 15px;
  }
}