/* Modern login styles */
:root{
	--bg1:#0f172a; --bg2:#0b1220; --card:#ffffff; --accent:#1877f2; --muted:#64748b;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;color:#0f172a;background:linear-gradient(135deg,var(--bg1),var(--bg2));min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.container{width:100%;max-width:980px}
.card{background:linear-gradient(180deg,rgba(255,255,255,0.98),#fff);border-radius:14px;padding:32px;box-shadow:0 10px 30px rgba(2,6,23,0.6);max-width:420px;margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.logo{flex:0 0 48px;border-radius:8px}
#login-title{font-size:20px;margin:0;color:#0f172a}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
input[type=text],input[type=password],input[type=email]{width:100%;padding:12px 12px;border:1px solid #e6edf6;border-radius:8px;font-size:15px;background:#fbfdff}
.password-wrap{position:relative}
.toggle-pass{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:transparent;border:none;cursor:pointer;font-size:16px}
.options{display:flex;align-items:center;justify-content:flex-start;margin:8px 0}
.remember{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:8px}
.actions{margin-top:10px}
button#submitBtn{width:100%;padding:12px 14px;border-radius:10px;background:var(--accent);color:#fff;border:none;font-weight:600;cursor:pointer;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px}
button#submitBtn[disabled]{opacity:0.7;cursor:not-allowed}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,0.4);border-top-color:rgba(255,255,255,0.95);border-radius:50%;display:inline-block;visibility:hidden}
button.loading .spinner{visibility:visible;animation:spin 0.8s linear infinite}
.error{color:#e53e3e;font-size:13px;text-align:center;min-height:18px;margin-top:8px}
.foot{margin-top:14px;text-align:center}
.foot a{color:var(--accent);text-decoration:none;font-weight:600}
@keyframes spin{to{transform:rotate(360deg)}}
@media (max-width:480px){.card{padding:20px;border-radius:10px}}

/* ======================= 2FA Section ======================= */
#twoFASection {
  text-align: center;
}

.twofa-title {
  font-size: 22px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px 0;
}

.twofa-subtitle {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 24px 0;
}

/* OTP Input */
.otp-input-wrap {
  margin-bottom: 20px;
}

#otpCode {
  width: 180px;
  padding: 16px;
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 8px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  background: #f8fafc;
  color: #0f172a;
  transition: all 0.2s ease;
}

#otpCode:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(24, 119, 242, 0.15);
}

#otpCode::placeholder {
  color: #cbd5e1;
  letter-spacing: 6px;
}

/* Verify Button */
#verifyOtpBtn {
  width: 100%;
  padding: 14px 20px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #1565d8);
  color: #fff;
  border: none;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 16px;
}

#verifyOtpBtn:hover {
  background: linear-gradient(135deg, #1565d8, #0d47a1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(24, 119, 242, 0.35);
}

#verifyOtpBtn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Secondary Buttons */
.twofa-secondary-btn {
  display: block;
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 10px;
}

.twofa-secondary-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #475569;
}

/* Backup Code Input */
#backupCodeInput {
  display: none;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
  padding: 16px;
  background: #f8fafc;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
}

#backupCode {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  text-align: center;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fff;
  font-family: 'Courier New', monospace;
  letter-spacing: 1px;
}

#backupCode:focus {
  outline: none;
  border-color: var(--accent);
}

#verifyBackupBtn {
  padding: 10px 16px;
  background: #475569;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease;
}

#verifyBackupBtn:hover {
  background: #334155;
}

#verifyBackupBtn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Back to Login */
#backToLogin {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 0;
  margin-top: 8px;
  transition: color 0.2s ease;
}

#backToLogin:hover {
  color: #1565d8;
  text-decoration: underline;
}

/* 2FA Error Message */
#twoFAError {
  color: #dc2626;
  font-size: 13px;
  min-height: 20px;
  margin: 12px 0;
}

/* Shield Icon Animation */
.shield-icon {
  font-size: 48px;
  margin-bottom: 16px;
  animation: pulse-shield 2s ease-in-out infinite;
}

@keyframes pulse-shield {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.9; }
}

/* ---- Mobile Login Improvements ---- */
@media (max-width: 768px) {
    .container {
        padding: 16px !important;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .card {
        padding: 24px 20px !important;
        border-radius: 16px !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    h1 {
        font-size: 18px !important;
    }
    .logo {
        width: 40px !important;
        height: 40px !important;
    }
    input[type="text"],
    input[type="password"] {
        padding: 14px 16px !important;
        font-size: 16px !important;
        min-height: 48px;
        border-radius: 10px !important;
    }
    button[type="submit"] {
        padding: 14px !important;
        font-size: 16px !important;
        min-height: 48px;
        border-radius: 10px !important;
    }
    .otp-input {
        font-size: 24px !important;
        letter-spacing: 8px !important;
        min-height: 54px;
    }
    .link-btn {
        padding: 10px !important;
        font-size: 14px !important;
    }
}