:root {
  --primary: #ff4500;
  --primary-hover: #e63e00;
  --bg-modal: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --input-bg: #f8fafc;
  --border-color: #e2e8f0;
  --success: #10b981;
  --shadow:
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ================= TOAST NOTIFICATIONS (Right-Bottom) ================= */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 11000;
  display: flex;
  flex-direction: column-reverse; /* New toast on top */
  gap: 12px;
}
.toast-alert {
  min-width: 280px;
  padding: 16px 20px;
  border-radius: 12px;
  background: #fff;
  color: var(--text-main);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 14px;
  border-left: 5px solid #ccc;
  animation: slideInToast 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}
.toast-alert.success {
  border-left-color: var(--success);
}
.toast-alert.error {
  border-left-color: #ef4444;
}
.toast-alert.warning {
  border-left-color: #f59e0b;
}

@keyframes slideInToast {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes fadeOutToast {
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ================= LOADING SPINNER ================= */
.spinner {
  width: 18px;
  height: 18px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  display: inline-block;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ================= MODAL BASE (PREMIUM UI) ================= */
.auth-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  background: #ffffff;
  width: 100%;
  max-width: 420px;
  padding: 35px 30px;
  border-radius: 24px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: modalSlideUp 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  max-height: 95vh;
  overflow-y: auto;
}
.modal-card::-webkit-scrollbar {
  display: none;
}

.modal-header {
  text-align: center;
  margin-bottom: 25px;
}
.modal-header h2 {
  font-size: 24px;
  font-weight: 800;
  color: #0f172a;
  margin: 0;
  letter-spacing: -0.5px;
}
.modal-header p {
  color: #64748b;
  font-size: 14px;
  margin-top: 5px;
}

#reg_otp::placeholder {
    color: #475569;
    letter-spacing: 10px;
    opacity: 0.8;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-row {
  display: flex;
  gap: 12px;
}
@media (max-width: 480px) {
  .form-row {
    flex-direction: column;
  }
  .modal-card {
    border-radius: 0;
    height: 100%;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 11px;
  font-weight: 700;
  color: #0f172a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-form input {
  width: 100%;
  padding: 14px;
  background: #f1f5f9;
  border: 2px solid transparent;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  transition: 0.2s;
}
.auth-form input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255, 69, 0, 0.1);
}

/* Premium Buttons */
.auth-btn {
  background: #0f172a;
  color: white;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 14px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.2s ease;
  width: 100%;
  box-shadow: 0 10px 15px -3px rgba(15, 23, 42, 0.3);
}
.auth-btn:hover {
  transform: translateY(-2px);
  background: #1e293b;
}
.auth-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

#initBtn {
  background: linear-gradient(45deg, #ff4500, #ff8c00);
}
.verify-btn {
  background: #059669;
}

.close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 32px;
  height: 32px;
  background: #f1f5f9;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #64748b;
  transition: 0.2s;
}
.close-btn:hover {
  background: #e2e8f0;
  color: #ef4444;
}

.divider {
  height: 1px;
  background: var(--border-color);
  margin: 24px 0;
  position: relative;
  text-align: center;
}
.divider span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  padding: 0 10px;
  font-size: 10px;
  font-weight: 800;
  color: var(--text-muted);
}

.link-section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 14px;
}
.link-section a {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}