@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --primary: #007aff;
  --primary-dark: #0051d5;
  --text-primary: #1a1a1a;
  --text-secondary: #6b6b6b;
  --text-light: #9a9a9a;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --border: #e5e5e5;
  --error: #ff3b30;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.landing-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.hero-section {
  max-width: 1200px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-left {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 540px;
}

.features-grid {
  display: grid;
  gap: 20px;
  margin-top: 8px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.8);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0;
}

.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 24px;
  padding: 48px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 440px;
}

.login-card h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.login-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: 'Inter', sans-serif;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--bg-white);
  color: var(--text-primary);
  transition: all 0.2s;
  outline: none;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

.form-group input::placeholder {
  color: var(--text-light);
}

.error-message {
  background: rgba(255, 59, 48, 0.1);
  border: 1px solid rgba(255, 59, 48, 0.2);
  color: var(--error);
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 20px;
  display: none;
}

.error-message.show {
  display: block;
}

.btn-login {
  width: 100%;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}

.btn-login:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.btn-login:active {
  transform: translateY(0);
}

.btn-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.register-link {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

.register-link a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.register-link a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

@media (max-width: 968px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .hero-title {
    font-size: 42px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .login-card {
    padding: 40px;
  }
}

@media (max-width: 640px) {
  .landing-container {
    padding: 20px;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .login-card {
    padding: 32px 24px;
  }
  
  .login-card h2 {
    font-size: 28px;
  }
  
  .features-grid {
    gap: 16px;
  }
  
  .feature-card {
    padding: 20px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-left,
.login-card {
  animation: fadeIn 0.6s ease-out;
}

.login-card {
  animation-delay: 0.1s;
}