body {
    margin: 0;
    background: #fdf1c6;
    font-family: 'Segoe UI', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
  }
  .container {
    display: flex;
    min-height: 100vh;
  }
  .svg-side {
    flex: 1.1;
    display: flex;
    align-items: stretch;
    justify-content: flex-end;
    background: #fdf1c6;
    min-width: 340px;
  }
  .svg-wrap {
    width: 100%;
    height: 100vh;
    max-width: 700px;
  }
  .form-side {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 48px;
    background: #fdf1c6;
  }
  .branding {
    margin-bottom: 1.5rem;
    text-align: left;
    width: 100%;
    max-width: 400px;
  }
  .branding h1 {
    font-size: 2.5rem;
    color: #1a2750;
    margin: 0 0 0.3em 0;
    font-weight: 700;
    letter-spacing: 1px;
  }
  .branding p {
    color: #1a2750;
    font-size: 1.1rem;
    margin: 0;
    font-weight: 500;
  }
  .auth-card {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.07);
    padding: 2.5rem 2.2rem;
    min-width: 340px;
    max-width: 400px;
    width: 100%;
    animation: popIn 0.8s cubic-bezier(.68,-0.55,.27,1.55);
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }
  @keyframes popIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
  }
  .auth-card h2 {
    color: #1a2750;
    margin: 0 0 1.2rem 0;
    font-size: 1.6rem;
    font-weight: 600;
  }
  .form-group {
    margin-bottom: 20px;
  }
  .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
  }
  input[type="text"], input[type="email"], input[type="password"] {
    width: 100%;
    padding: 0.7rem;
    border: 1.5px solid #e5e5e5;
    border-radius: 8px;
    font-size: 1rem;
    background: #faf9f6;
    transition: border 0.2s;
  }
  input:focus {
    border: 1.5px solid #1a2750;
    outline: none;
  }
  .btn {
    width: 100%;
    background: linear-gradient(90deg,#1a2750 60%, #4e9e60 100%);
    color: #fff;
    padding: 0.8rem 0;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 0.7rem;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(30,40,80,0.07);
    transition: background 0.2s;
  }
  .btn:hover {
    background: linear-gradient(90deg,#4e9e60 0%, #1a2750 100%);
  }
  .social-auth {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1.5rem 0 0.5rem 0;
  }
  .social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8em;
    padding: 0.7em 0;
    border-radius: 8px;
    border: 2px solid #e0e0e0;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    background: #fff;
    color: #222;
    transition: box-shadow 0.2s, border 0.2s;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  }
  .social-btn img {
    width: 22px;
    height: 22px;
  }
  .social-btn.google { border-color: #de5246; }
  .social-btn.google:hover { box-shadow: 0 2px 8px #de524633; }
  .social-btn.facebook { border-color: #1877f3; }
  .social-btn.facebook:hover { box-shadow: 0 2px 8px #1877f333; }
  .social-btn.twitter { border-color: #1da1f2; }
  .social-btn.twitter:hover { box-shadow: 0 2px 8px #1da1f233; }
  
  .social-btn:hover { filter: brightness(0.96); }
  .switch-auth {
    margin-top: 1.2rem;
    text-align: center;
    font-size: 1rem;
    color: #4e5a6d;
  }
  .switch-auth a {
    color: #4e9e60;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
  }
  .switch-auth a:hover {
    color: #1a2750;
  }
  @media (max-width: 900px) {
    .container { flex-direction: column; }
    .svg-side { display: none; }
    .form-side { align-items: center; padding: 0; width: 100vw;}
  }
  
  .svg-side {
    position: relative;
    width: 50vw;
    min-width: 400px;
    height: 100vh;
    background: transparent;
    overflow: hidden;
    padding: 0;
    margin: 0;
  }
  .svg-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    min-width: 50vw;
    min-height: 100vh;
    overflow: hidden;
    z-index: 1;
    background: transparent;
  }
  .svg-mask {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    height: 100vh;
    width: auto;
    min-width: 50vw;
    max-width: none;
    background: transparent;
  }
  @media (max-width: 900px) {
    .svg-side { display: none; }
  }
  
  .oauth-buttons {
    width: 80%;
    display: flex;
    justify-content: center;
    flex-direction: column;
    gap: 15px;
    margin: 20px auto;
    align-items: center;
  }
  
  .oauth-btn {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #fff;
    border: 1.5px solid #e5e7eb;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    padding: 0.7em 1.2em;
    font-size: 1.08rem;
    font-weight: 600;
    cursor: pointer;
    transition: box-shadow 0.18s, border 0.18s, background 0.18s;
    outline: none;
    position: relative;
  }
  
  .oauth-btn:focus {
    border-color: #1a2750;
    box-shadow: 0 0 0 3px #1a275033;
  }
  
  .oauth-btn:hover {
    background: #f8fafc;
    box-shadow: 0 4px 16px rgba(0,0,0,0.07);
  }
  
  .oauth-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    margin-right: 1em;
    background: #f3f4f6;
    flex-shrink: 0;
  }
  
  .oauth-google .oauth-icon {
    background: #fff;
    border: 1.5px solid #de5246;
  }
  .oauth-facebook .oauth-icon {
    background: #1877f3;
  }
  .oauth-twitter .oauth-icon {
    background: #1da1f2;
  }
  
  .oauth-google .oauth-icon img {
    width: 22px;
    height: 22px;
  }
  .oauth-facebook .oauth-icon img,
  .oauth-twitter .oauth-icon img {
    width: 22px;
    height: 22px;
    filter: brightness(0) invert(1);
  }
  
  .oauth-google {
    border-color: #de5246;
    color: #222;
  }
  .oauth-google:hover {
    border-color: #de5246;
    background: #fff4f2;
  }
  
  .oauth-facebook {
    border-color: #1877f3;
    color: #1877f3;
  }
  .oauth-facebook:hover {
    background: #f0f6ff;
  }
  
  .oauth-twitter {
    border-color: #1da1f2;
    color: #1da1f2;
  }
  .oauth-twitter:hover {
    background: #f0faff;
  }
  
  .oauth-label {
    flex: 1;
    text-align: left;
    font-weight: 600;
    letter-spacing: 0.01em;
  }
  
  .checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 10px;
  }
  
  .checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
  }
  
  .checkbox-group input[type="checkbox"] {
    width: auto;
    margin: 0;
  }
  
  select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
    font-size: 16px;
  }
  
  select:focus {
    outline: none;
    border-color: #4CAF50;
  }
  
.glass-navbar {
  position: sticky;
  top: 0;
  width: 100vw;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.18);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1.5px solid rgba(255,255,255,0.25);
  border-radius: 0 0 1.5rem 1.5rem;
  transition: background 0.3s;
  padding: 0;
}

.navbar-container {
  width: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 2rem;
  box-sizing: border-box;
  max-width: none;
}

.navbar-logo {
  font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #2d3748;
  letter-spacing: 2px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.08);
  text-decoration: none;
  transition: color 0.2s;
}

.navbar-logo:hover {
  color: #ff7e5f;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.navbar-link {
  font-size: 1.1rem;
  color: #2d3748;
  text-decoration: none;
  padding: 0.5rem 1.1rem;
  border-radius: 1.2rem;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  font-weight: 500;
  position: relative;
}

.navbar-link:hover, .navbar-link:focus {
  background: rgba(255,255,255,0.5);
  color: #ff7e5f;
  box-shadow: 0 2px 8px rgba(255,126,95,0.08);
}

.navbar-register-upgraded {
  background: linear-gradient(120deg, rgba(255, 126, 95, 0.45) 60%, rgba(255, 183, 94, 0.22) 100%),
              linear-gradient(90deg, rgba(255, 183, 94, 0.22) 0%, rgba(255, 126, 95, 0.32) 100%);
  color: #fff !important;
  font-weight: 700;
  border: 1.5px solid rgba(255,126,95,0.32);
  border-radius: 2rem;
  padding: 0.5rem 1.7rem;
  box-shadow: 0 4px 24px 0 rgba(255,126,95,0.13), 0 1.5px 8px rgba(255,183,94,0.08);
  letter-spacing: 1px;
  backdrop-filter: blur(13px) saturate(170%);
  -webkit-backdrop-filter: blur(13px) saturate(170%);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.15s, border 0.2s;
  position: relative;
  overflow: hidden;
  text-shadow: 0 2px 8px rgba(0,0,0,0.10), 0 1px 2px rgba(255,126,95,0.10);
}

.navbar-register-upgraded:hover, .navbar-register-upgraded:focus {
  background: linear-gradient(120deg, rgba(255, 126, 95, 0.65) 40%, rgba(255, 183, 94, 0.32) 100%),
              linear-gradient(90deg, rgba(255, 183, 94, 0.45) 0%, rgba(255, 126, 95, 0.38) 100%);
  color: #fff;
  box-shadow: 0 8px 32px rgba(255,126,95,0.18), 0 2px 12px rgba(255,183,94,0.12);
  border: 2px solid rgba(255,126,95,0.45);
  transform: scale(1.07);
}

.navbar-toggle {
  display: none;
}

.navbar-burger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  width: 2.2rem;
  height: 2.2rem;
  justify-content: center;
  align-items: center;
  margin-left: 1rem;
}

.navbar-burger span {
  display: block;
  width: 2rem;
  height: 3px;
  background: #2d3748;
  margin: 0.25rem 0;
  border-radius: 2px;
  transition: all 0.3s;
}

@media (max-width: 900px) {
  .navbar-container {
    padding: 0.7rem 1rem;
  }
}

@media (max-width: 700px) {
  .navbar-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.85);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.18);
    border-radius: 0 0 1.5rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1rem 2rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.3s, transform 0.3s;
    z-index: 999;
  }
  .navbar-toggle:checked ~ .navbar-links {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .navbar-burger {
    display: flex;
  }
  .navbar-links .navbar-link {
    width: 100%;
    padding: 1rem 0;
    border-radius: 0.8rem;
    margin: 0.2rem 0;
  }
}