.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  padding: var(--space-5);
}

.auth-wrap {
  width: 100%;
  max-width: 440px;
}

.auth-card {
  position: relative;
  width: 100%;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  box-shadow: var(--shadow-lg);
}

.auth-back {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
  z-index: 10;
}

.auth-back:hover {
  color: var(--ember);
  background: var(--spark-gradient-soft);
}

@media (max-width: 480px) {
  .auth-back {
    top: var(--space-3);
    left: var(--space-3);
    font-size: 0.75rem;
    padding: 3px 6px;
  }
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--spark-gradient);
  color: #fff;
  font-weight: 900;
  font-size: 1.2rem;
  box-shadow: 0 8px 18px -6px rgba(255, 122, 41, 0.55);
  flex-shrink: 0;
  margin: 0 auto 16px;
}

.auth-card h1 {
  font-size: 1.3rem;
  text-align: center;
  margin: 0 0 6px;
}

.auth-card .sub {
  color: var(--ink-soft);
  font-size: 0.9rem;
  text-align: center;
  margin-bottom: 20px;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.auth-tab {
  flex: 1;
  padding: 10px 8px;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.auth-tab:hover {
  color: var(--orange);
  background: var(--spark-gradient-soft);
}

.auth-tab.active {
  color: var(--ember);
  background: var(--spark-gradient-soft);
}

.auth-tab-panels {
  position: relative;
}

.auth-tab-panel {
  display: none;
  animation: fadeIn 0.2s ease;
}

.auth-tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.form-group input:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--spark-gradient-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  width: 100%;
}

.btn-primary {
  background: var(--spark-gradient);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(255, 122, 41, 0.5);
}

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

.btn-block {
  width: 100%;
}

.otp-countdown-wrap {
  display: flex;
  justify-content: center;
  margin: 6px 0 18px;
}

.otp-countdown-ring {
  position: relative;
  width: 66px;
  height: 66px;
}

.otp-countdown-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.otp-ring-bg {
  fill: none;
  stroke: var(--border);
  stroke-width: 3;
}

.otp-ring-progress {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 106.8;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke 0.3s ease;
}

.otp-countdown-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-weight: 800;
  font-size: 0.8rem;
  color: var(--ember);
  direction: ltr;
  transition: color 0.3s ease;
}

.otp-countdown-text.urgent {
  color: var(--danger);
  animation: otpUrgentPulse 1s ease-in-out infinite;
}

@keyframes otpUrgentPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.link-btn {
  background: none;
  border: none;
  color: var(--ink-soft);
  font-size: 0.78rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 0;
}

.link-btn.ruby {
  color: var(--ember);
}

.link-btn:disabled {
  color: var(--ink-faint) !important;
  cursor: not-allowed;
  text-decoration: none !important;
}

.hint {
  font-size: 0.78rem;
  color: var(--danger);
  margin-top: 6px;
}

.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}