:root {
  --teal-light: #8edcff;
  --teal-medium: #68b8ff;
  --teal-dark: #3f79b8;
  --bg-dark: #6c8fe8;
  --bg-card: rgba(44, 89, 147, 0.78);
  --bg-card-strong: rgba(37, 72, 123, 0.92);
  --bg-pill: rgba(33, 67, 109, 0.88);
  --text-primary: #f7fbff;
  --text-secondary: rgba(230, 240, 255, 0.78);
  --border-color: rgba(255, 255, 255, 0.12);
  --error: #ff7a8a;
  --success: #71e1b2;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background:
    radial-gradient(circle at top right, rgba(166, 225, 255, 0.95), rgba(166, 225, 255, 0) 28%),
    radial-gradient(circle at top left, rgba(116, 139, 255, 0.95), rgba(116, 139, 255, 0) 34%),
    linear-gradient(180deg, #7ba6f4 0%, #5f73d6 48%, #5264ca 100%);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  -webkit-tap-highlight-color: transparent;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: linear-gradient(180deg, rgba(61, 115, 173, 0.9) 0%, rgba(55, 90, 160, 0.94) 100%);
  border-radius: 34px;
  box-shadow: 0 30px 80px rgba(32, 52, 119, 0.38);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  max-height: -webkit-fill-available;
  display: flex;
  flex-direction: column;
}

.auth-card-header {
  padding: 22px 24px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0));
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0.08) 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 18px;
}

.auth-card-body {
  padding: 24px;
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

h2 {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

p {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: rgba(245, 250, 255, 0.92);
}

input {
  width: 100%;
  padding: 15px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background: rgba(17, 42, 79, 0.42);
  color: var(--text-primary);
  font-size: 16px;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

input:focus {
  outline: none;
  border-color: rgba(158, 222, 255, 0.65);
  background: rgba(20, 48, 89, 0.62);
  box-shadow: 0 0 0 4px rgba(141, 213, 255, 0.12);
}

button {
  padding: 14px 20px;
  border-radius: 18px;
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  min-height: 50px;
}

.primary {
  background: linear-gradient(180deg, #ffffff 0%, #edf5ff 100%);
  color: #315d8f;
  width: 100%;
  box-shadow: 0 10px 24px rgba(19, 34, 78, 0.2);
}

.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(19, 34, 78, 0.24);
}

.secondary {
  background: rgba(27, 58, 98, 0.72);
  color: #f2f8ff;
  border: 1px solid rgba(255, 255, 255, 0.1);
  width: 100%;
  margin-top: 8px;
}

.secondary:hover {
  background: rgba(36, 74, 121, 0.92);
}

.danger {
  background-color: var(--error);
  color: white;
  width: 100%;
}

.danger:hover {
  background-color: #dc2626;
}

.message {
  margin-top: 14px;
  font-size: 13px;
  text-align: center;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(10, 24, 49, 0.28);
  border: 1px solid rgba(255,255,255,0.08);
}

.message.error {
  color: #ffd7dd;
  background: rgba(128, 39, 60, 0.32);
  border-color: rgba(255, 122, 138, 0.34);
}

.message.success {
  color: #d7fff0;
  background: rgba(28, 108, 88, 0.28);
  border-color: rgba(113, 225, 178, 0.3);
}

.hidden {
  display: none;
}

.field {
  margin-bottom: 18px;
}

.two-fa-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.approval-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.approval-actions button {
  flex: 1;
}

.method-controls {
  margin: 18px 0 22px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.method-controls label {
  display: flex;
  gap: 6px;
  align-items: center;
  cursor: pointer;
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--bg-pill);
  border: 1px solid rgba(255,255,255,0.08);
}

.method-controls input[type="radio"] {
  width: auto;
}

.muted {
  color: var(--text-secondary);
  font-size: 13px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  color: var(--text-primary);
}

/* Mobile-specific adjustments */
@media (max-width: 480px) {
  body {
    padding: 10px;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .auth-card {
    max-width: 100%;
    border-radius: 28px;
    min-height: calc(-webkit-fill-available - 20px);
  }
  
  .auth-card-header {
    padding: 16px 20px;
  }
  
  .auth-card-body {
    padding: 20px;
  }
  
  h2 {
    font-size: 24px;
  }
  
  .approval-actions {
    flex-direction: column;
  }
  
  .approval-actions button {
    width: 100%;
  }
}

/* Prevent zoom on input focus on iOS */
@supports (-webkit-touch-callout: none) {
  input[type="text"],
  input[type="password"] {
    font-size: 16px;
  }
}

/* QR Scanner Styles */
#scanner-container {
  position: relative;
  width: 100%;
  max-width: 300px;
  margin: 20px auto;
  background: rgba(8, 17, 38, 0.68);
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

#scanner-video {
  width: 100%;
  height: auto;
  display: block;
}

#scanner-canvas {
  display: none;
}

/* Approval UI */
.approval-info {
  background: linear-gradient(180deg, rgba(35, 72, 118, 0.82), rgba(46, 72, 126, 0.66));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  padding: 18px;
  margin: 16px 0;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}

.approval-info p {
  margin: 4px 0;
  font-size: 14px;
}

.approval-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.approval-actions button {
  flex: 1;
}