html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
}

.auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--platform-page-background);
  padding: 20px;
}

footer {
  margin-top: auto;
}

.auth-box {
  background-color: var(--platform-surface);
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 400px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.auth-tabs {
  flex-shrink: 0;
  display: flex;
  border-bottom: 1px solid #e0e0e0;
}

.tab-content {
  flex: 1;
  padding: 30px;
  display: none;
  flex-direction: column;
  justify-content: center;
}

.tab-btn {
  flex: 1;
  padding: 15px;
  background: none;
  border: none;
  font-size: 18px;
  font-weight: 500;
  color: var(--platform-text);
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  color: var(--platform-accent);
}

.tab-btn.active {
  color: var(--platform-accent);
  border-bottom: 3px solid var(--platform-accent);
}

.tab-content.active {
  display: flex;
}

.auth-title {
  text-align: center;
  margin-bottom: 5px;
  color: var(--platform-heading);
  font-size: 24px;
  font-weight: 600;
}

.auth-form {
  display: flex;
  flex-direction: column;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--platform-heading);
}

.form-control {
  padding: 12px 15px;
  border: 1px solid #e0e0e0;
  border-radius: 5px;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--platform-accent);
  box-shadow: 0 0 0 2px rgba(235, 124, 23, 0.1);
}

.auth-btn {
  padding: 12px;
  background: var(--platform-brand-gradient);
  color: var(--platform-surface);
  border: none;
  border-radius: 5px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.3s ease;
  margin-top: 10px;
}

.auth-btn:hover {
  background: linear-gradient(to right, #E08215, #C83E12);
}

@media (max-width: 768px) {
  .auth-container {
    padding: 10px;
  }
  
  .auth-box {
    max-width: 100%;
  }
  
  .tab-content {
    padding: 20px;
  }
  
  .auth-title {
    font-size: 20px;
  }
}