* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background: #030712;
  background-image: 
    radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.12) 0px, transparent 50%);
  color: #F8FAFC;
  min-height: 100vh;
  display: flex;
  justify-content: center; /* Horizontally center */
  align-items: center;     /* Vertically center */
  padding: 20px;
}

.page-container {
  width: 100%;
  max-width: 450px;
  margin: 0 auto;          /* Centered block */
}

.glass-card {
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(56, 189, 248, 0.1);
  padding: 36px;
}

.back-link {
  color: #38BDF8;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 20px;
  transition: transform 0.2s ease;
}

.back-link:hover {
  transform: translateX(-4px);
  color: #7DD3FC;
}

.auth-header {
  margin-bottom: 24px;
}

.auth-header h2 {
  font-size: 1.8rem;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.subtitle {
  color: #94A3B8;
  font-size: 0.9rem;
}

.tab-container {
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 24px;
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: #94A3B8;
  padding: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: #38BDF8;
  color: #030712;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}

.auth-form {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.auth-form.active-form {
  display: flex;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.85rem;
  color: #CBD5E1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.input-group label i {
  color: #38BDF8;
}

.input-group input {
  background: rgba(11, 19, 43, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 12px 14px;
  color: #FFFFFF;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.input-group input:focus {
  border-color: #38BDF8;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.submit-btn {
  margin-top: 10px;
  background: linear-gradient(135deg, #38BDF8, #0284C7);
  color: #FFFFFF;
  border: none;
  padding: 14px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 10px 20px rgba(2, 132, 199, 0.3);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 25px rgba(2, 132, 199, 0.45);
}

.demo-notice {
  margin-top: 20px;
  padding: 12px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 10px;
  font-size: 0.8rem;
  color: #7DD3FC;
  display: flex;
  align-items: center;
  gap: 8px;
}
/* Custom Toast Notification */
.toast-container {
  position: fixed;
  top: 30px;
  right: 30px;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px) scale(0.95);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast-container.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.toast-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(56, 189, 248, 0.2);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 16px 22px;
  border-radius: 16px;
  min-width: 300px;
}

.toast-icon {
  font-size: 1.6rem;
  color: #38BDF8;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-content h4 {
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.toast-content p {
  color: #94A3B8;
  font-size: 0.88rem;
}